410 results about "Indoor air temperature" patented technology

A system, method and apparatus for controlling power consumption of an HVAC device configured to adjust a climate of a room in a fully automated manner in real time or near real time. For example, an apparatus according to various embodiments comprises a receiver, for receiving via a radiofrequency (RF) channel a control signal associated with a demand response event; a comfort determining mechanism, for determining whether air within the room exhibits a temperature level within a temperature range, a relative humidity level within a relative humidity range and whether the room is occupied or not; and a control mechanism, for generating a HVAC control signal configured to reduce power consumption of the HVAC device in response to receiving the demand response event control signal and the room air temperature level being within the temperature range and the relative humidity level being within the relative humidity range.

Disclosed is a packaged chilling system for providing chilled water to an air conditioning system for a building that includes: a duct system; an air handling system; and a water chilling system; wherein: the duct system is in operable communication with a building that has a plurality of rooms, at least one of the rooms having a sensor for detecting the room air temperature in the room, the duct system comprising at least one supply duct for directing low temperature air from the air handling system to the building and at least one return duct for directing high temperature air from the building to the air handling system; the air handling system includes a plurality of air handling units, each air handling unit comprising an air inlet for receiving high temperature air from the building, a cooling coil that includes at least one conduit through which chilled water flows, the cooling coil having multiple passes and positioned for heat transfer contact with the high temperature air, and a fan for increasing the velocity of air in the air handling unit; the water chilling system is installed at a location proximate the building, and is operably connected to the air handling system; and the water chilling system includes a moveable support structure comprising a support base on which a plurality of water chilling system components are affixed, the components including at least one water chiller for lowering the temperature of water from a high temperature to a low temperature. This packaged chilling system may also be used to provide chilled water to industrial processes such as chemical plants, automotive plants, textile mills, paper mills, computer cooling, and factory air-conditioning.

A house air conditioning system that operates with outside air. The air conditioning system closes the house and uses air conditioning, when the outside temperature is lower than the inside house air temperature the air conditioning system is turned off, the house or building is opened to the outside and the cooler outside air is drawn through the house using fans. In the morning, before sunrise, the fans will draw outside cool air in from the outside to cool the thermal mass of the house and then closes the house as the outside air heats to trap the cool air within the house to delay air conditioning operation and reduce the overall amount of AC runtime energy required to cool the house. This system can also operate in reverse to heat the home. The system uses multiple sensors and control mechanism to ensure optimal energy savings.

Disclosed is a packaged chilling system for providing chilled water to an air conditioning system for a building that includes: a duct system; an air handling system; and a water chilling system; wherein: the duct system is in operable communication with a building that has a plurality of rooms, at least one of the rooms having a sensor for detecting the room air temperature in the room, the duct system comprising at least one supply duct for directing low temperature air from the air handling system to the building and at least one return duct for directing high temperature air from the building to the air handling system; the air handling system includes a plurality of air handling units, each air handling unit comprising an air inlet for receiving high temperature air from the building, a cooling coil that includes at least one conduit through which chilled water flows, the cooling coil having multiple passes and positioned for heat transfer contact with the high temperature air, and a fan for increasing the velocity of air in the air handling unit; the water chilling system is installed at a location proximate the building, and is operably connected to the air handling system; and the water chilling system includes a moveable support structure comprising a support base on which a plurality of water chilling system components are affixed, the components including at least one water chiller for lowering the temperature of water from a high temperature to a low temperature. This packaged chilling system may also be used to provide chilled water to industrial processes such as chemical plants, automotive plants, textile mills, paper mills, computer cooling, and factory air-conditioning.

An adaptive control device (77) and method (102-108) for control of the operation of an actuator (72), and particularly thermally-powered actuator (72) of the type used in a variable-air-volume diffuser (71). The preferred adaptive control device is an expert system circuit which controls a heater (74) provided on a thermally-powered actuator (72) to implement an adaptive process (102-108) in which a sensed variable, such as room air temperature, is driven toward a target temperature control range (±0.25° F.). Most preferably, the process steps (106) include driving the room air temperature toward a gross (broader) temperature control range (±1.0° F.) by moving a diffuser damper assembly (80) to a substantially fully open or substantially fully closed position. Thereafter, and while inside the gross temperature control range, the process steps (107, 108) include adjustments to the position of the damper assembly (80) are made only when a sensed parameter, preferably the supply air flow rate, is in a stable condition. Most preferably, the damper (80) is temporarily "kicked" farther open or farther closed than necessary, to minimize hysteresis effects, and then adjusted to a posiiton which tends to drive the room air temperature into the narrower, targeted temperature control range.

The invention discloses an air-conditioner and an outlet air temperature controlling method thereof. The air-conditioner comprises an indoor unit fan, an indoor air temperature sensor, an outlet air temperature sensor, a controller and the like; and when the indoor temperature Tn does not reach the temperature Ts set by a user, the controller adjusts the revolving speed N of the indoor unit fan of the air-conditioner by using a proportion integration differentiation (PID) algorithm according to the current refrigerating or heating mode of the air-conditioner, so that the outlet air temperature Tc of the air-conditioner is not higher than the refrigerating outlet air comfortable temperature value T1 of the air-conditioner or not lower than the heating outlet air comfortable temperature value T2 of the air-conditioner. According to the air-conditioner, the revolving speed of the indoor unit fan of the air-conditioner is dynamically adjusted through the PID algorithm according to the actual outlet air temperature at the air outlet of an indoor unit of the air-conditioner and the indoor environmental temperature, and then the magnitude of the circulating air quantity of the indoor unit of the air-conditioner is adjusted, so that the actual outlet air temperature of the indoor unit of the air-conditioner runs at a specific comfortable and relatively constant temperature during refrigerating and heating, and the refrigerating and heating comfort of the air-conditioner is improved; and the air-conditioner has the advantages of energy conservation, environment friendliness, economical efficiency and practicability.

An adaptive control device (77) and method (102-108) for control of the operation of an actuator (72), and particularly thermally-powered actuator (72) of the type used in a variable-air-volume diffuser (71). The preferred adaptive control device is an expert system circuit which controls a heater (74) provided on a thermally-powered actuator (72) to implement an adaptive process (102-108) in which a sensed variable, such as room air temperature, is driven toward a target temperature control range (±0.25° F.). Most preferably, the process steps (106) include driving the room air temperature toward a gross (broader) temperature control range (±1.0° F.) by moving a diffuser damper assembly (80) to a substantially fully open or substantially fully closed position. Thereafter, and while inside the gross temperature control range, the process steps (107, 108) include adjustments to the position of the damper assembly (80) are made only when a sensed parameter, preferably the supply air flow rate, is in a stable condition. Most preferably, the damper (80) is temporarily "kicked" farther open or farther closed than necessary, to minimize hysteresis effects, and then adjusted to a posiiton which tends to drive the room air temperature into the narrower, targeted temperature control range.

The invention discloses a refrigeration and heat pump composite energy system with independently controlled temperature and independently controlled humidity. Air is cooled by the aid of an independent refrigerating system in a temperature control process, and a dehumidification process and a regeneration process are carried out by the aid of an independent heat pump system in a humidity control process. Specifically, steam latent heat absorbed by solution in the solution dehumidification process is supplemented by an evaporator of the heat pump system, vaporization latent heat of steam in the solution regeneration process is supplemented by a condenser of the heat pump system, the temperature is controlled by an evaporator of the refrigerating system, and heat of a condenser of the refrigerating system is used for preheating dehumidifying dilute solution. The refrigeration and heat pump composite energy system has the advantages that independent matching of energy in the temperature control process and energy in the dehumidification and regeneration processes is carried out on the basis of an indoor air temperature and humidity control mechanism, and the purpose of independently controlling the temperature and the humidity is achieved.

An air circulator for amplifying and manipulating high volumes of low velocity air in order to circulate and regulate indoor air temperature within a commercial or an industrial environment. The air circulator includes a housing and a support member. The housing has an airflow passageway with a bottom end defining an air intake and a top end defining an air outlet. The air circulator further includes a fan positioned within the airflow passageway of the housing substantially adjacent to the top end of the housing. The support member supports the housing so as to dispose the air intake above the ground. The fan and the air outlet are configured to discharge air having a significant vertical component and a significant lateral component.

The invention relates to the field of a refrigeration air conditioner of a steam compressor, in particular to an air conditioner outdoor unit, an air conditioner outdoor unit defrosting judging system and an air conditioner outdoor unit defrosting judging method. According to the air conditioner outdoor unit, the air conditioner outdoor unit defrosting judging system and the air conditioner outdoor unit defrosting judging method, disclosed by the invention, the air conditioner outdoor unit is internally and additionally provided with an anemograph which is used for detecting the air speed of an air outlet, whether an outdoor air-cooled heat exchanger is frosted or not can be judged by the air conditioner outdoor unit defrosting judging system by combining the changing situation of the air speed and the tube temperature of the outdoor air-cooled heat exchanger, defrosting can be carried out by controlling the state of a defrosting switch, the accuracy of judging the defrosting by the system is increased, the purposes that the defrosting can be carried out when frost exists and the defrosting cannot be carried out when no frost exists can be achieved, the defrosting period can be prolonged to the maximum, the influence on indoor air temperature by an air conditioner defrosting process can be reduced, and the using comfort of a user and the heating effect of the air conditioner are increased.

A thermostat, of the type that employs latching relays to connect thermostat power to the various wires of the thermostat run, has a re-pulse feature that supplies latching pulses at a given interval, e.g., three hours, to ensure that the relays are in their proper state agreeing with the thermostat mode and the room temperature relative to the setpoint(s). In the case that the room air temperature is changing in a manner contrary to the current heating or cooling mode, which may indicate the latching relay has been knocked or bumped and needs to have its proper state re-established, the thermostat microprocessor issues pulses to the latching relay(s) more frequently, e.g., each 30 minutes, and the re-pulses may have a longer pulse width, e.g., increased from 20 ms to 25 ms.

The two-stage metal hydride automobile air conditioner refrigerates via the heat effect of reversible reaction between metal hydride and hydrogen. Waste heat of tail gas as high temperature heat source and peripheral atmosphere as medium temperature heat source are utilized to drive the refrigerating circulation of metal hydride, and two pairs of metal hydride reactors are adopted for alternate refrigeration to continuous regulation of temperature inside the automobile. The air conditioner system includes mainly high and low temperature metal hydride reactors, heat exchanger, solenoid valve, water pump, blower, etc. Inside both the high temperature and the low temperature reactors, are arranged fine pipes with filled metal hydride and hydrogen penetrating film in the middle section of pipes and hydrogen collecting general pipe. The air conditioner has no corrosion, no wear, less motion parts, high vibration resistance, no damage to atmosphere ozone layer and other advantages.

The invention discloses a multi-split air conditioning system and a status switching control method therefor. The multi-split air conditioning system comprises an outdoor unit and indoor units installed in multiple rooms. The outdoor unit comprises a compressor, a compressor controller and a condenser; each indoor unit comprises an electronic expansion valve, an electronic expansion valve driver, an evaporator, an indoor air temperature detector disposed in one room, and a refrigerant superheat detector disposed at an outlet of the evaporator, wherein the compressor forms a loop with the condenser, the electronic expansion valve and the evaporators. The status switching control method includes: acquiring a difference between the indoor actually-measured temperature of one room and the preset temperature to determine operation status of the electronic expansion valve driver and transmit the status information to the compressor controller, so that the position number and position of operation frequency of the compressor are determined. Total refrigeration output by the multi-split system can be controlled simply and efficiently and can be reasonably distributed to the rooms by the method, so that the refrigeration for each room matches with heat load of the room.

The present invention relates to air conditioning systems, and more particularly, to an air conditioning system which can control a refrigerant flow rate to a heat exchanger exchanging heat with room air to be optimum; and a method for controlling the same. The air conditioning system includes an outdoor heat exchange part including a compressor for compressing refrigerant, an outdoor heat exchanger for making the refrigerant to heat exchange with outdoor air, and an expansion device for expanding the refrigerant, an indoor heat exchange part including a pump for making refrigerant in a flow path independent from the outdoor heat exchange part to flow, at least one indoor heat exchanger for making the refrigerant heat exchange with room air, and a flow rate control device for controlling a flow rate of the refrigerant, and a hybrid heat exchange part for making the outdoor heat exchange part and the indoor heat exchange part, which are independent from each other, to heat exchange with each other. According to this, the air conditioning system can be installed on a multistory building without limitation of a height of the building as far as a capacity of the pump permits. Moreover, even if a refrigerant pipe is long, the air conditioning system is applicable even to a system with a refrigerant pipe line longer than the related art as far as the capacity of the pump permits, and fine control of a room air temperature is possible.

The invention relates to the field of air conditioning, in particular to a variable refrigerant flow radiation air-conditioning system. The variable refrigerant flow radiation air-conditioning system comprises an indoor machine, an outdoor machine, a sub-water collector, a radiation tail end and a dew-point temperature controller; the indoor machine is connected with the outdoor machine in series; the radiation tail end is connected with the indoor machine through the sub-water collector; the dew-point temperature controller is connected with the sub-water collector and used for perceiving indoor temperature and humidity changes and preventing the phenomenon that condensation may occur on the radiation surface under the circumstance of wind system faults through the mode that a water circulation valve is cut off in advance. According to the variable refrigerant flow radiation air-conditioning system, heating and humidification can be performed in winter, refrigeration and dehumidification are performed in summer, meanwhile, new wind is fed to an indoor area after purification, and it is guaranteed that indoor air temperature and humidity and cleanliness reach a living optimal comfortable state. The variable refrigerant flow radiation air-conditioning system has the advantages that the installation is simple, the reliability is high, the indoor temperature, the humidity and the air cleanliness are adjusted uniformly and softly, and no noise, condensate water, secondary pollution and the strong blowing feeling exist. The equipment whole volume is small, the occupied space is small, the noise is low, and the appearance is beautiful.

The invention discloses an air conditioner capable of purifying air. The air conditioner comprises a control system, an air purification system, a temperature conditioning system, an air humidification system, an air detection device and a display screen, wherein the air purification system is arranged in an air conditioner air inlet channel at the front part of the temperature conditioning system; the air purification system comprises a plasma discharging device and a PM2.5 (Particulate Matter 2.5) filtering device; the air humidification system is arranged in an air conditioner air outlet channel in the rear part of the temperature conditioning system; the air detection device comprises a PM2.5 sensor and an air humidification sensor; the PM2.5 sensor and the air humidification sensor are used for transmitting collected data to the control system; the data received by the control system is displayed on the display screen in real time; meanwhile, the air humidification system is turned on or off according to the received data. The air conditioner can be used for conditioning the indoor air temperature and removing harmful particles in air, and solving the problem that the indoor air is dried if the air conditioner is turned on in winter.

The invention discloses an air chamber for automatically measuring soil respiration, which belongs to the field of ecological research. The air chamber for automatic measurement of soil respiration is composed of an automatic opening device, a base, a measuring chamber and the like. It is driven by a small DC motor placed on the base to realize timing opening and closing during measurement. The measurement chamber consists of a hollow shell, which is divided into upper and lower parts. A temperature probe can be installed in the top center of the upper part of the shell to measure the temperature in the gas chamber. The two sides of the top inside the shell are provided with ventilation ports that communicate with the infrared gas analyzer. The upper part of the shell is equipped with a copper tube with holes; the lower part of the shell is buried in the soil, and the airtightness is realized by the plastic rubber ring when the upper and lower shells are closed; the air chamber for automatic measurement of soil respiration in the present invention can be used for infrared gas analysis. The instrument provides an analytical gas source to calculate the soil respiration rate; it can quickly provide multi-point measurements.

The invention provides a control method, control device and control system of an air conditioner. The control method comprises the following steps that: first indoor air temperature is detected through a first temperature sensor in the indoor unit of the air conditioner, and second indoor air temperature is detected through a second temperature sensor of the remote controller of the air conditioner; whether the difference value of the first indoor air temperature and the second indoor air temperature is larger than a preset difference value is judged; and the comprehensive indoor temperature of the air conditioner is determined according to judging results, and the air conditioner is controlled according to the comprehensive indoor temperature. With the control method, control device and control system of the air conditioner provided by the technical scheme of the invention adopted, more accurate control on the air conditioner can be realized, and therefore, temperature adjustment of the air conditioner more accord with the needs of the user, and the reliability of the operation of the air conditioner can be improved.

The invention discloses a fresh air machine with a temperature compensation function and relates to the field of air purification. The fresh air machine comprises an outdoor unit and an indoor unit, the outdoor unit is a heat exchange system comprising a compressor, and the indoor unit is an air purification adjustment portion and comprises an air quality testing portion, an air purification portion and a temperature adjustment portion; the air quality testing portion comprises a PM (particulate matter) 2.5 sensor, a TVOC (total volatile organic compound) sensor, a CO2 sensor, a temperature and humidity sensor and the like; the air purification portion comprises an initial effect filter, an electrostatic dust collector, an activated carbon filter, an efficient filter and a light catalyst component; the temperature adjustment portion refers to heat exchange fins connected with the outdoor unit. Indoor air can be purified manually or according to indoor air quality testing values, the indoor air temperature can also be regulated, air is purified, and meanwhile, comfortable temperature is provided.

Apparatus and methods for predictively controlling the temperature of a coolant delivered to a treatment apparatus configured to non-invasively treat a patient's tissue with doses of electromagnetic energy. The treatment apparatus includes a closed-loop cooling system connected with an energy delivery device used to deliver the electromagnetic energy to the patient's tissue. Coolant is pumped from a reservoir to the energy delivery device in the closed-loop cooling system. The control temperature of the coolant in the reservoir is adjusted based upon the specific room air temperature. This predictive adjustment promotes better control over the coolant temperature at the energy delivery device by lessening the effects of heat gain in transit from the reservoir to the energy delivery device.

The invention discloses a control method and system for improving the comfort of an air conditioner sleeping mode. The control method comprises the following steps that the gender and / or the age groupof a user are detected; the outdoor air temperature, the indoor air temperature and the indoor air humidity are collected in real time, the average of the outdoor air temperature and the indoor air temperature is set as the average radiation temperature, and a target temperature value is calculated by substituting clothing heat resistance, air velocity parameters and human body metabolic rate parameters into a PMV equation, wherein the clothing heat resistance and the air velocity parameters are preset by an air conditioner; and the frequency and operating mode of a compressor are adjusted through a 0.1-DEG C precise temperature control technology, and thus the temperature is adjusted to the target temperature. The precise target temperature value can be calculated through a fitting function, real-time precise adjustment can be achieved, and the heat comfort of the user under the sleeping state is significantly improved.

A method for energy saving during the operation of an HVAC system comprising an energy saving unit, comprising: installing a temperature probe in the supply air that can send data to the energy saving unit; configuring the energy saving unit to perform a set of functions comprising: receiving a user's instructions for turning on the HVAC system and setting a target room temperature; shutting off the heater or compressor when the target temperature is reached; measuring the temperature of the air in the room that is being heated or cooled and comparing the temperature of the supply air with the temperature of the air in the room; and causing the blower to keep running after shutting off the heater or compressor for as long as the temperature of the air in the room is smaller or greater than the temperature of the supply air, respectively.

The invention discloses a method for reducing a water flow of an air conditioning system and a dynamic temperature difference flow regulating valve. The air conditioning system is composed of devices of a cooling main machine, a heating main machine, a water pump, a fan, a heat exchanging coil pipe and the like. The dynamic temperature difference flow regulating valve comprises a water flow regulating valve, a driver, heat exchanging coil pipe water inlet and outlet temperature sensors, a controller, an indoor air temperature sensor, an indoor air temperature setting device or an indoor cooling and heating load calculator. In the cooling work condition, the controller independently runs after the temperature sensors detect water temperatures and always keeps temperature difference of inlet and outlet water to be at the optimum value so that cooling and dehumidification effects can be guaranteed, and the phenomenon that large flow and small temperature difference occur to a water system is avoided; in the dry cooling work condition or the heating work condition, the controller always keeps the temperature difference of the inlet and outlet water to be at the maximum value according to the indoor air temperature sensor and the indoor air temperature setting device or the indoor cooling and heating load calculator, namely, the dynamic temperature difference flow regulating valve can achieve minimum flow operation in multiple work conditions, and energy consumption of the water pump is further reduced.

The invention belongs to the technical field of air monitoring, and discloses an indoor air monitoring alarming system. The indoor air monitoring alarming system is provided with a temperature sensor, a humidity sensor, a PM2.5 sensor and an air quality sensor and is used for monitoring indoor air temperature, air humidity, PM2.5 and other quality parameters of the air in real time; the all-around monitoring of the indoor air quality can be facilitated, and the living quality and living standard of people can be improved; and a storage device is used for storing various index parameters of the air quality processed by a central processor and a processing process for fire alarm information, so that the later investigation on the fire reason can be facilitated. The indoor air monitoring alarming system is also provided with a fire alarming function, so that the fire alarming can be realized, the information can be transmitted to a mobile terminal and a fire station in time, the fire can be discovered in time and alarmed in time, and the property loss of house owners can be maximally reduced.

The invention discloses an air conditioner air supply method and an air conditioner, and relates to the technical field of air conditioners. The method is used for improving the distribution uniformity of indoor air temperature, reducing the vertical temperature difference of the indoor air and improving the comfort without increasing the structural complexity of the air conditioner. The air conditioner air supply method comprises the steps that the air conditioner is controlled to start an upwind and downward wind sweeping mode, when the air conditioner is used for heating, air volumes of different air outlet angles are adjusted, so that the air volumes are negatively correlated with the air outlet angles; when the air conditioner is used for cooling, the air volumes of different air outlet angles are adjusted, so that the air volumes are positively correlated with the air outlet angles, wherein the air outlet angles are included angles between the air outlet direction and the vertical downward direction. The air conditioner can execute the air conditioner air supply method provided by the technical scheme. The air conditioner air supply method provided by the invention is used for adjusting the temperature of indoor air.

The invention discloses a cabinet air conditioner, an air-conditioner and a cabinet air conditioner air outlet control method. The cabinet air conditioner comprises a shell and an air outlet device; an air flue is formed in the shell; and the air outlet device is fixed to the shell and comprises three air outlet structures which are transversely arranged at intervals, the three air outlet structures are all communicated with the air flue, an air hole is formed between air outlets of every two adjacent air outlet structures, and the air holes penetrate the shell in the front-and-back direction. According to the technical scheme, the air outlet amount and the air outlet mode of the cabinet air conditioner can be effectively adjusted, and the indoor air temperature can effectively and rapidly reach the set temperature.

The invention discloses a dust-free air conditioner, which belongs to the technical field of electrical appliances of air conditionings. In the dust-free air conditioner, a metal box body is internally separated into a and b air channels by baffle plates, an evaporator, an outdoor unit conventional air conditioning structure and a water circulating system, wherein the evaporator is connected with the outdoor unit conventional air conditioning structure and the water circulating system. The invention is characterized in that the water circulating system is internally provided with a dedusting device. When the indoor air temperature is conditioned, simultaneously dust-free process and sterilization are performed, which overcomes the defaults of purifying air by methods of traditional filters, medicinal methods, ultraviolet ray and the like, further, the humidity of the rooms can be regulated, and, the air conditioner has the function of dust removal, sterilization, energy recovery of condensed water, non-out-flow of the condensed water and the like, thereby the indoor air quality is promoted, bacteria and viruses which exist in the air and transmit diseases are eliminated, various infectious diseases occurred in air conditioning rooms are effectively prevented, and the indoor air is enabled to be more sanitary and safer. The air conditioner has huge environmental protection effect and markets.

The invention provides an indoor air purifying system based on intelligent control, and belongs to the technical field of air purifying. The indoor air purifying system based on intelligent control ischaracterized by comprising a filter module, a temperature control module, a humidity control module, a sterilizing and dust removal module, a negative oxygen ion module, an oxygen control module andan intelligent control module, wherein air is filtered in an adsorbed manner by the filter module through an activated carbon filter screen; the temperature control unit is used for controlling an indoor air temperature; the humidity control module is used for adjusting indoor humidity; the sterilizing and dust removal module cleans indoor air by a disinfectant air cleaning device; the negative oxygen ion module is used for increasing indoor negative oxygen ions; the oxygen control module is used for adjusting and supplementing indoor oxygen; and the intelligent control unit comprehensively adjusts the indoor air according to detection results of various units. Intelligent unmanned control is realized by multiple sensors, and the indoor air is comprehensively adjusted from multiple aspects.

The invention discloses an energy-saving control method for an auxiliary temperature-reducing heat-exchange device of an air conditioner. The auxiliary temperature-reducing heat-exchange device comprises an indoor air fan, a heat exchanger and an outdoor air fan, wherein the two fans drive the air indoors and outdoors to perform heat exchange in the heat exchanger respectively, exchange the cooling capacity of the outdoor air to the indoor air, and take the indoor heat out at the same time. The energy-saving control method for the auxiliary temperature-reducing heat-exchange device comprises the following steps of: a, selecting to enter an energy-saving heat-exchange mode; b, measuring the temperature of the indoor air and the temperature of the outdoor air, and calculating the temperature difference between indoors and outdoors; and c, finding the energy efficiency ratio of the auxiliary temperature-reducing heat-exchange device during the temperature difference between indoors and outdoors according to a temperature difference-energy efficiency ration chart of the air conditioner, and starting or shutting the auxiliary temperature-reducing heat-exchange device. The method can accurately judge the most energy-saving starting / stopping time of the auxiliary temperature-reducing heat-exchange device, thereby realizing high efficiency and energy conservation; at the same time, the method can ensure that the auxiliary temperature-reducing heat-exchange device better adapts to different air-conditioning equipment and is matched with the air-conditioning equipment for using; and the method strengthens the adaptability and the universality of the auxiliary temperature-reducing heat-exchange device.