50results about How to "Meet water temperature requirements" patented technology

The invention relates to a drinking water device and a drinking water temperature adjusting method. The drinking water device comprises a normal-temperature drinking water vessel, a control panel, a main hot water supply device, an auxiliary hot water supply device and a water outlet control module. A water inlet of the main hot water supply device is connected to the normal-temperature drinking water vessel, a water inlet of the auxiliary hot water supply device is connected to a water outlet of the main hot water supply device, and the water outlet control module is controlled by the control panel and is at least connected with the water outlets of the normal-temperature drinking water vessel and the auxiliary hot water supply device. The main hot water supply device and the auxiliary hot water supply device are electrically connected to the control panel, when the temperature of the drinking water required by a user is higher than that of the hot water supplied by the main hot water supply device, the control panel controls the auxiliary hot water supply device to reheat the hot water from the main hot water supply device. By adopting the multilevel hot water supply device, the problems that the waiting time for fetching the water is long, the energy consumption is large and the like can be solved, and the drinking water with the required temperature can be quickly obtained by the user through an energy-saving way.

The invention discloses a heat pump hot water system and a control method of the heat pump hot water system. The system comprises a controller, a heat pump unit, a water storage tank and a water supply pipeline. The first water outlet end of the water storage tank is communicated with the water inlet end of the heat pump unit to form a first pipeline, and the water storage tank is communicated with the water outlet end of the heat pump unit to form a second pipeline. The water storage tank, the first pipeline, the heat pump unit and the second pipeline are sequentially connected to form a circulating heating loop, and the water supply pipeline, the first pipeline, the heat pump unit and the water storage tank are sequentially connected to form a direct heating loop. The water supply pipeline is provided with a water supply pump, a first electromagnetic two-way valve, a flow sensor and a second electromagnetic two-way valve which are sequentially connected in series, and the first pipeline is provided with a circulating water pump which is electrically connected with the controller. By the adoption of the heat pump hot water system and the control method, the integration of a circulating heating mode and a direct-heating heating mode of a heat pump water heater can be effectively achieved, and the hot water supply capacity of the heat pump water heater is improved, so that improvement of the use comfort of users is facilitated.

The invention provides a solar medium-temperature heat supply system based on cross-seasonal water body heat storage. The solar medium-temperature heat supply system comprises a solar heat-collecting system, a cross-seasonal heat storage water body, an absorption heat pump, a buffer water tank, a heat user, an auxiliary heat source, water pumps, valves, heat exchangers and a control system. The solar heat-collecting system communicates with the buffer water tank. The cross-seasonal heat storage water body communicates with the heat user and the absorption heat pump through the heat exchangers. The auxiliary heat source communicates with the absorption heat pump and the heat user. According to the solar medium-temperature heat supply system based on cross-seasonal water body heat storage, multi-energy complementary heat supplying can be achieved through solar energy and other energy sources by adjusting different modes; and the requirements for the heat supply water temperature of general city pipe networks can be met; and the solar medium-temperature heat supply system is suitable for supplying heat to buildings in northern China urban areas where solar energy resources are rich and relatively rich.

The invention discloses a mode switch control method of a hot water system of a heat pump. The method comprises the following steps: when the hot water system of the heat pump operates, keeping a heatpump unit in a started state; when the hot water system operates in a circulating heating mode, starting a circulating water pump of a first pipeline and keeping a valve of a water supply pipeline inan opened state, and detecting the current flow of the water supply pipeline in real time; when the current flow of the water supply pipeline is greater than the preset minimum flow, stopping the circulating water pump to switch to a direct heat type heating mode; when the hot water system operates in the direct heat type heating mode, opening the valve of the water supply pipeline and closing the circulating water pump; when a water level switch of a water storage tank is closed, starting the circulating water pump and closing the valve of the water supply pipeline or decreasing the opennessof the valve of the water supply pipeline to switch to the circulating heating mode. The method provided by the invention integrates the circulating and direct heat type heating modes of a hot watermachine of the heat pump effectively and improves the hot water supply ability of the hot water machine of the heat pump, so that the using comfort of a user is improved favorably.

The invention provides a small water temperature control system. The small water temperature control system comprises a hot water tank, a cold water tank and a warm water tank. The hot water tank is provided with a heater, the cold water tank is provided with a cooler, the warm water tank is provided with a stirrer, and the hot water tank is provided with a water inflow pipe, connected with the cold water tank through a first water outflow pipe and connected with the warm water tank through a second water outflow pipe. A first temperature sensor and a first liquid level sensor are installed in the hot water tank. A second temperature sensor and a second liquid level sensor are installed in the cold water tank. The warm water tank is connected with a fourth water outflow pipe leading to a water receiving opening and connected with a water drainage pipe, and a third liquid level sensor and a third temperature sensor are installed in the warm water tank. According to the system, tap water is boiled and then mixed, warm water with the set temperature value can be quickly generated, the warm water volume can be monitored and prompted through liquid level detection, the volume of the drained warm water can be prompted, and therefore the concentration of made milk powder is proper.

The invention discloses a semiconductor heat pump energy-saving instant-hot faucet. The semiconductor heat pump energy-saving instant-hot faucet comprises a thermoelectric heat pump chip layer, a heating circuit, a waste heat recovering circuit and a water temperature control device. The thermoelectric heat pump chip layer is composed of a plurality of circular thermoelectric heat pump chips, the cold end face of the thermoelectric heat pump chip layer and the hot end face of the thermoelectric heat pump chip layer are connected with the waste heat recovering circuit and the heating circuit respectively, a heat preservation and thermal insulation gasket is arranged between the waste heat recovering circuit and the heating circuit, and the water outlet temperature of the semiconductor heat pump energy-saving instant-hot faucet is adjusted through a water temperature control rotary knob. Basin drainage waste heat is recovered through the functions of a semiconductor heat pump, tap water is rapidly heated after secondary heat quantity increasing is conducted on the semiconductor heat pump, the semiconductor heat pump energy-saving instant-hot faucet has the advantages of being controllable in water outlet temperature, rapid, capable of saving energy, compact in structure and the like, and the semiconductor heat pump energy-saving instant-hot faucet can be directly installed on an existing domestic water system and has practicability and comfort.

The invention relates to a hot water circulating device and a control method thereof. The hot water circulating device comprises a controller, a cold water pipe, a flow sensor, a circulating water pipe, a gas water heater, an electric water heater, a water pump, a first temperature sensor, a second temperature sensor, a first switch valve and a second switch valve. The hot water circulating device can be effectively used for realizing obtaining of hot water with higher temperature by users, instant use of hot water and continuous use of the hot water.

The invention discloses a climbing film type multi-effect water distillator, and belongs to the field of distilled water equipment. The multi-effect water distillator comprises a frame; the frame is provided with evaporators connected sequentially through a raw water pipeline; a condensing device is arranged above the evaporators; the condensing device and the evaporators are connected with a pre-heater through a pure steam pipeline; the raw water inlet of the evaporator is connected with the pre-heater; the inner part of the evaporator is divided into four sections, namely a steam-water separation section, a reflux defoaming section, an evaporation section and a water storage chamber sequentially from top to bottom; evaporating pipes arranged longitudinally are arranged in the evaporation section; and the side walls of the evaporators are provided with through holes. In the multi-effect water distillator, the water quantity in the evaporating pipes of the evaporators is completely the same, and the evaporation quantity in the evaporating pipes is also the same in the heat exchange process, so the efficiency of the evaporating pipes is consistent; the water distribution structuresare from bottom to top, so that complete and uniform water distribution of the evaporating pipes is realized; and the multi-effect water distillator is used for preparing the distilled water by usingthe climbing film principle, so that uniform water distribution and full steam-water separation are ensured, and the medical distilled water with high efficiency and good quality is prepared.

The invention discloses a circulating water aquaculture system for a penaeus vannamei inland freshwater pond. The circulating water aquaculture system comprises an aquaculture pond, a production channel and a shed body, wherein a multi-parameter water quality detection probe is laid at the bottom of the aquaculture pond; a primary biological purification pond and a secondary biological purification pond are arranged at one end of the aquaculture pond side by side; a buffer pond is arranged on the right side of the secondary biological purification pond; a water pump is arranged at a water outlet of the buffer pond; a water outlet nozzle is fixedly arranged on the inner wall of the aquaculture pond and communicated with the water pump through a pipeline; automatic bait feeders are arrangedat the south end and the north end of the aquaculture pond correspondingly; four-side lifting ventilation films are arranged on four sides of the shed body; and a well water spraying pipeline is arranged at the top of the shed body. The circulating water aquaculture system is not influenced by weather change in a shed temperature mode, is high in controllability and can realize a stable, continuous and efficient intensive aquaculture mode by improving the water quality.

The invention discloses a climbing film type multi-effect water distillator, and belongs to the field of distilled water equipment. The multi-effect water distillator comprises a frame; the frame is provided with evaporators connected sequentially through a raw water pipeline; a condensing device is arranged above the evaporators; the condensing device and the evaporators are connected with a pre-heater through a pure steam pipeline; the raw water inlet of the evaporator is connected with the pre-heater; the inner part of the evaporator is divided into four sections, namely a steam-water separation section, a reflux defoaming section, an evaporation section and a water storage chamber sequentially from top to bottom; evaporating pipes arranged longitudinally are arranged in the evaporation section; and the side walls of the evaporators are provided with through holes. In the multi-effect water distillator, the water quantity in the evaporating pipes of the evaporators is completely the same, and the evaporation quantity in the evaporating pipes is also the same in the heat exchange process, so the efficiency of the evaporating pipes is consistent; the water distribution structuresare from bottom to top, so that complete and uniform water distribution of the evaporating pipes is realized; and the multi-effect water distillator is used for preparing the distilled water by usingthe climbing film principle, so that uniform water distribution and full steam-water separation are ensured, and the medical distilled water with high efficiency and good quality is prepared.

The invention discloses a method for utilizing waste heat of water drained after running water washing, in which all water drained after running water washing is conveyed into a heat exchanger by using a draining pump under increased pressure without carrying air while entering the heat exchanger, and three types of equipment for implementing the method. The three types of equipment comprise: 1, equipment for utilizing waste heat of water drained after running water washing, in which a draining pump with a self-sucking function and a constant rotary speed separates and exhausts air before entering the heat exchanger after sucking in all water drained after washing and air, 2, equipment for utilizing waste heat of water drained after running water washing, in which a blade water pump without a self-sucking function and with a constant rotary speed conveys water drained after washing under increased pressure after separating and exhausting air from the water drained after washing under the centrifuging function of a blade, and 3, equipment for utilizing waste heat of water drained after running water washing, in which the flow of water drained after washing and conveyed into the heat exchanger by the draining pump under increased pressure is continuous, automatically-adjustable and equal to the flow of water for washing. According to the method and the equipment for utilizing waste heat of water drained after running water washing, waste heat in all water drained after washing can be utilized, sufficient heat exchange between water for washing and water drained after washing in the heat exchanger is ensured, and the heating energy is saved to the maximum extent.

The invention discloses a heat pump water heater. The heat pump water heater comprises a water tank, a heat pump unit, a high-temperature water outlet pipeline, a medium-temperature water outlet pipeline, a water supplementing pipeline, a water inlet pipeline, an a heat preservation pipeline. A heat pump water outlet communicates with the water tank, hot water is supplied to the top of the water tank, the high-temperature water outlet pipeline is mounted at the position, close to the upper, of the water tank, the medium-temperature water outlet pipeline is arranged at the position, close to the middle, of the water tank, the water supplementing pipeline is arranged on the position, close to the lower, of the water tank, the water inlet pipeline communicates with a heat pump water inlet, one end of the heat preservation pipeline communicates with the water tank, the other end of the heat preservation pipeline communicates with the heat pump water inlet, when the water level is lower than the low water level, the water supplementing pipeline and the water inlet pipeline both enter water, the heat preservation pipeline is closed, when the water level is higher than the high water level, the water supplementing pipeline and the water inlet pipeline are closed, water in the water tank flows to the heat pump water inlet through the heat preservation pipeline, when the water level isbetween the low water level and the high water level, the water supplementing pipeline is closed, and the water in the water tank flows to the heat pump water inlet through the heat preservation pipeline. Natural layering of water in the water tank is used, high-temperature water is taken from the top of the water tank, the warm water is taken from the middle, the needs of the different water temperatures by a user are met, and the use experience of the heat pump water heater can be improved.

The invention relates to a solar photovoltaic panel and solution type air conditioner energy storage co-generation system. The system comprises a solar system and a solution type air conditioner. The solar system comprises a solar photovoltaic panel, a light concentrating plate and a water-cooling flow channel. The solution type air conditioner comprises a dehumidifier, a dehumidification blower, a dehumidification pump, a regenerator, a regeneration blower and a regeneration pump. The dehumidification pump drives dehumidification liquid to pass through the dehumidifier, the dehumidification blower drives outdoor air to pass through the dehumidifier and the outdoor air is transformed into dry air to enter a room, after passing through the dehumidifier, the dehumidification liquid enters the regenerator, and the regeneration pump drives the dehumidification liquid to enter a first heat exchanger; the water outlet end of the water-cooling flow channel is connected with the first heat exchanger, and after hot water passes through the water-cooling flow channel, heat of the hot water is transmitted to the dehumidification liquid in the first heat exchanger. According to the solar photovoltaic panel and solution type air conditioner energy storage co-generation system, the hot water generated when the solar system is cooled is utilized to heat the dehumidification liquid, water is cycled in different systems, and the requirements of the systems for water temperature are right met, so that highest efficiencies of the systems are achieved.

The invention relates to a mine water zero-discharge treatment method, in particular to an energy-saving and consumption-reducing method based on a mine water zero-discharge whole process, and belongsto the technical field of water treatment. In the energy-saving and consumption-reducing method based on a mine water zero-discharge full process, the mine water zero-discharge full process comprisesthe procedures of purification treatment of mine water, membrane concentration treatment and evaporative crystallization; the method is characterized in that mine water heat energy is recycled on thebasis of the mine water zero-discharge full process technology. According to different contents of temperature sensitive substances in the mine water, the process is divided into a direct-current type and a mixed-flow type. According to the method, the characteristics of low temperature and large specific heat capacity of the mine water are utilized according to different water temperatures and water qualities of the mine water and different water temperatures of cooling return water in the evaporative crystallization process, high-grade heat generated in the evaporative crystallization process is recycled by changing the flow of a mine water medium in zero-discharge treatment, and the low-temperature mine water is heated by utilizing the heat; therefore, the purposes of improving the sectional process efficiency in the whole zero-discharge process of the mine water, saving the energy consumption and the operation cost and the like are achieved.

The invention discloses a multi-gear electric kettle which comprises a kettle body, a spout and a kettle cover, wherein an electric heating pipe is arranged in the kettle body and is electrically connected with an external power supply by a heating circuit board; the kettle body is provided with a temperature regulation control panel; the temperature regulation control panel comprises a temperature sensor and a temperature controller which are arranged in the kettle body; the temperature sensor is electrically connected with the temperature controller; and the temperature controller is electrically connected with the heating circuit board. The multi-gear electric kettle is simple in structure, easy to implement, and can be used for heating water with the preset temperature by the temperature regulation control panel, thus meeting the requirements of people for the water temperature and greatly improving the life quality of the people.

The invention provides an acid-making sewage treatment system. The acid-making sewage treatment system comprises a water inlet pool with a water inlet, a sewage neutralization device communicated with the water inlet pool, a first sewage concentration pool communicated with the sewage neutralization device, a sewage softening device communicated with the first sewage concentration pool, a second sewage concentration pool communicated with the sewage softening device, a first reuse water pool communicated with the second sewage concentration pool, a cooling water device communicated with the first reuse water tank, and a second reuse water pool communicated with the cooling water device and provided with a water outlet. Compared with the prior art, the acid-making sewage treatment system can recycle arsenic and fluoride ions in acid-making sewage, can reduce hardness of the acid-making sewage, and can reduce the temperature of the acid-making sewage, so that the sewage can realize cyclic utilization. The invention further provides an acid-making sewage treatment method which is simple and efficient.

The invention relates to a circulating fluidized bed heat supply unit slag cooler and low-temperature economizer heat utilization system which comprises a slag cooler, a low-temperature economizer, a#3 low-pressure heater, a #2 low-pressure heater and a #1 low-pressure heater, wherein the #3 low-pressure heater, the #2 low-pressure heater and the #1 low-pressure heater are used for heating condensed water step by step, the condensed water is heated through the #3 low-pressure heater to be then conveyed to the slag cooler, and the slag cooler and the low-temperature economizer are connected inseries through a slag cooler water outlet pipeline; the circulating fluidized bed heat supply unit slag cooler and low-temperature economizer heat utilization system further comprises a plate heat exchanger, the plate heat exchanger is used for exchanging heat of urban heat supply network circulating water, the plate heat exchanger is connected with the low-temperature economizer in series through a low-temperature economizer water outlet pipeline, and the condensed water inlet end and the condensed water outlet end of the plate heat exchanger are connected with a plate heat exchanger bypasspipeline in parallel; and a water outlet of the plate heat exchanger bypass pipeline is respectively communicated with water inlet pipelines of the #1 low-pressure heater and the #2 low-pressure heater. By means of the circulating fluidized bed heat supply unit slag cooler and low-temperature economizer heat utilization system, the heat utilization rate of the slag cooler and the low-temperature economizer can be increased, and the operation efficiency of the low-pressure heaters and the thermal efficiency of a power station are improved.

The invention belongs to the technical field of solar water heaters, and discloses an electric heat tracing strip which comprises a shell, a circulating pump, a heater and a water outlet pipe. The circulating pump is positioned in the shell, the heater is connected to an output end of the circulating pump, the water outlet pipe is connected to an input end of the circulating pump, a water inlet pipe is connected with an end of the heater, and the heater and the circulating pump are connected to a control panel positioned in the shell. The invention further discloses a solar water heater with the electric heat tracing strip and a method for controlling the solar water heater. The method includes starting the circulating pump of the electric heat tracing strip for circulating water in a water tank when the temperature of water in the water tank of the solar water heater does not reach first preset temperatures; starting the heater of the electric heat tracing strip in circulating procedures; heating the water in the water tank until the temperature of the water reaches the first preset temperatures. The electric heat tracing strip, the solar water heater and the method have the advantages that the solar water heater is provided with the electric heat tracing strip which is communicated with the water tank in a circulating manner, the water in the water tank can be circulated andheated, and accordingly the requirements of users can be met.

The invention discloses a showering system. The showering system comprises a water heater, a water outlet device, a water outlet pipe connected with the water heater and the water outlet device and a water temperature regulating device arranged on the water outlet pipe and close to the water outlet device, wherein the water temperature regulating device comprises a monitoring device, a temperature rising device and a temperature reducing device, the monitoring device is used for monitoring water temperature, the temperature rising device conducts temperature rising on water when the water temperature is lower than a preset water temperature, the temperature reducing device conducts temperature reduction on the water when the water temperature is higher than the preset water temperature. The showering system monitors the water temperature at the position of the water outlet device through the monitoring device so as to regulate the water temperature through the temperature rising device and the temperature reducing device and further meet the water temperature requirement of a user, and the comfort degree of the user in use is effectively improved.

The invention discloses a tunnel type washing machine, comprising a pre-washing mechanism consisting of a first washing bin and a second washing bin, a water inlet of the first washing bin being in communication with a first recycled water supply pipe after water treatment; a main washing mechanism, composed of third to eighth washing bins, the third washing bin and the fourth washing bin being incommunication with a heating pipeline, the eighth washing bin being provided with a first water outlet, and the first water outlet being connected with a recovery water tank; a rinsing mechanism, composed of ninth to thirteenth washing bins, the ninth washing bin being provided with a second water outlet, the second water outlet being connected with a first water tank or a filtering device, the first water tank being provided with a first outlet, and the first outlet being in communication with the first recycled water supply pipe; and a neutralizing mechanism, composed of fourteenth to sixteenth washing bins, the fourteenth washing bin being provided with a second water supply pipe, and the second water supply pipe being connected with a clean water faucet. According to the tunnel type washing machine, material melting, water consumption and energy consumption are effectively reduced, and the washing effect is improved.

The invention provides a two-stage heating system for recycling waste heat of industrial wastewater based on a negative pressure flash principle. The two-stage heating system comprises a waste heat low-temperature heating loop for primary heating of return water of heat supply network circulating water, a waste heat high-temperature heating loop for secondary heating of the return water of the heat supply network circulating water, and an industrial wastewater flash loop for separately providing heat sources for the waste heat low-temperature heating loop and the waste heat high-temperature heating loop. According to the two-stage heating system, while the low-temperature waste heat of the industrial wastewater is recycled, the peak regulation flexibility of a power plant in the heating period is improved, the energy utilization rate of the whole system is improved, the heating cost is reduced, the heating quality is improved, and the purposes of energy conservation and emission reduction are achieved.

The invention discloses a solar heat pump household type central hot water system. The solar heat pump household type central hot water system comprises a solar hot water loop, an air source heat pumphot water loop and a solar-air source coupling hot water loop, wherein the loops are connected; due to the fact that the system is provided with a solar heat collection plate and an evaporator, the solar and air source coupling manner is adopted to heat sea water, a hot source for generating low-pressure water steam achieves full-weather work, fresh water is self-produced, the self-produced freshwater directly serves as domestic hot water, the temperature is controllable, and the beneficial effects of being energy-saving and reliable in running are achieved. High-quality central hot water can be stably supplied to household buildings, and the resident life condition of the fresh water resource shortage area or site like an island can be effectively improved. Due to the fact that the system comprises multiple distillation chambers, the multi-effect distillation manner is selected in sea water desalination, the higher water production rate is achieved, the energy saving effect is further improved, according to the exterior environment condition, different loops are selected for running, and the system comprises the solar hot water loop, the air source heat pump hot water loop and the solar-air source coupling hot water loop.

The invention discloses a method for using waste heat by separately fetching water from a power station condenser. The method comprises the following steps of 1, dividing a tube bundle area of the power station condenser into a high-heat area with relatively high heat load and a low-heat area with relatively low heat load; 2, respectively arranging a water-inlet chamber and a water-outlet chamber on each of the high-heat area and the low-heat area on the water side of the condenser; 3, introducing low-temperature cooling water led from the corresponding water-outlet chamber of the low-heat area of the condenser to a cooling tower or another cooling water source to reduce temperature, returning the cooling water to the corresponding water-inlet chamber of the low-heat area of the condenser to absorb heat and increase the temperature, and circulating the steps in such a way; introducing high-temperature cooling water from the water-outlet chamber of the high-heat area of the condenser, after the high-temperature cooling water is conveyed to the evaporator of a heat pump device to release heat, returning the water to the corresponding water-outlet chamber of the high-heat area of the condenser to absorb heat and increase the temperature, and circulating the steps in such a way.

The invention relates to a solar photovoltaic photo-thermal and solution type air conditioner combined supply system. A solar system and a solution type air conditioner device are included. The solarsystem comprises a solar cell panel, a light gathering plate and a water cooling runner. A solution type air conditioner system comprises a dehumidifier, a dehumidification draught fan, a dehumidification pump, a regenerator, a regeneration draught fan and a regeneration pump. The dehumidification pump drives dehumidification liquid to pass through the dehumidifier, the dehumidification draught fan drives outdoor air to blow through the dehumidifier, the outdoor air becomes dry air to enter a room, the dehumidification liquid passing through the dehumidifier enters the regenerator, and the regeneration pump drives the dehumidification liquid to enter the solution side of a first heat exchanger. The water outlet end of the water cooling runner is connected with the other side of the first heat exchanger, and hot water passing through the water cooling runner transmits heat to the dehumidification liquid through the first heat exchanger. According to the solar photovoltaic photo-thermaland solution type air conditioner combined supply system, hot water generated through cooling of the solar system is utilized for heating the dehumidification liquid, water circulates in different systems, the requirements of various systems for the water temperature are exactly met, and the efficiency of various systems is the highest.

The invention discloses a novel solar stand-alone machine hot water system. The hot water system comprises a heat collection unit, a heat supply unit and a control unit; the heat collection unit comprises a solar stand-alone machine, a water tank and a first heating device, a water inlet of the water tank is connected with the solar stand-alone machine, and the first heating device is installed in the water tank; the water tank comprises a hot water tank and a cold water tank which are arranged side by side; the heat supply unit comprises a water terminal, a thermostatic valve, a second heating device and a system pipeline; the thermostatic valve is provided with a hot water inlet end, a cold water inlet end and a mixed water outlet end; the system pipeline comprises a hot water supply pipe, and a thermostatic device, a circulating device and a second heating device are sequentially mounted on the hot water supply pipe; the system pipeline further comprises a cold water inlet pipe, a water return pipe and a branch water pipe; the control unit comprises a controller, and the controller is electrically connected with the thermostatic valve, the circulating device, the heating device and the electromagnetic valve. The invention provides the hot water system capable of realizing zero cold water, capacity increase of hot water and constant-temperature water outlet.

The invention discloses a closed evaporation cooling high-temperature cold water unit which comprises an evaporation cooling coil pipe, a filter I, a water distributing device I, a water blocking plate I and a fan, wherein the filter I, the water distributing device I, the water blocking plate I and the fan are sequentially arranged at the upper part; a group of pipe type indirect evaporative coolers are arranged outside both sides of the bottom of the evaporation cooling coil pipe; the upper part of each pipe type indirect evaporative cooler is sequentially provided with a filler II, a waterdistributing device II and a water blocking plate II; the lower part of each pipe type indirect evaporative cooler is provided with an opening type water tank II; the lower part of the evaporation cooling coil pipe is provided with an opening type water tank I, and the opening type water tank II and the opening type water tank I are separated by a barrier; the opening type water tank II is communicated with the water distributing device II by a pipeline; and the opening type water tank I is communicated with the water distributing device I by a pipeline. The unit can meet the requirement of the water temperature at a dry type or dry working condition sensible heat tail end, prevent a phenomenon of dew formation at the sensible heat tail end and conform to the requirement of the water temperature of an evaporation cooling semi-centralized type air-conditioning system in the northwest district.

The invention relates to a hot water circulation device and a control method thereof, wherein the hot water circulation device comprises a controller, a cold water pipe, a flow sensor, a circulating water pipe, a gas water heater, an electric water heater, a water pump, a first temperature sensor, and a second temperature sensor , the first on-off valve and the second on-off valve. The hot water circulation device of the present invention can be effectively utilized to realize that users can obtain hot water at a higher temperature, use hot water immediately, and use hot water uninterruptedly.

The invention discloses a hot water system and a water heating method, and relates to the field of hot water projects. The problem that the water outlet temperature of a water storage tank is not stable when a user uses water continuously is solved. The hot water system comprises a first hot water device, a second hot water device and a water storage device, wherein the water outlet end of the first hot water device can be communicated with the second hot water device, the water storage device can be communicated with the second hot water device and the first hot water device, and the water storage device is further provided with the water outlet end and the water inlet end. The water heating method comprises the following steps that the first hot water device receives water input from the water storage device; the second hot water device receives water heated by the first hot water device; the temperature of water entering the second hot water device is judged; when the temperature of the water entering the second hot water device does not meet the first preset condition, the second hot water device is turned on, and the water heated through the second hot water device is conveyed to the water storage device. According to the hot water system and the water heating method, the stability of the water outlet temperature of the water storage tank is improved.