1694 results about "Air change" patented technology

A combustor has a flow sleeve and a flow liner defining a generally axial flow direction of compressor discharge air toward combustor burners. A casing is secured to the forward end of the flow sleeve defining an annular plenum along the interior of the flow sleeve. Openings through the flow sleeve supply compressor discharge air into the plenum where the air changes direction for flow through apertures into and generally coaxially with the free air stream. The axial injection minimizes or eliminates energy losses due to cross flow injection within the axial air stream while continuing to cool the liner.

The invention discloses a method for evaluating indoor air quality and a system for monitoring and analyzing indoor air quality. The method comprises the following steps of: monitoring environmental data in an enclosed room; computing mean square deviations between carbon dioxide concentration values measured in real time within a preset period of time and carbon dioxide concentration values at the same moments computed with a formula 1 under the condition of the value of a ventilation rate Q selected within a preset range; determining the value of a ventilation rate Q' which corresponds to a minimum mean square deviation in the computed mean square deviations as a ventilation rate Q in the enclosed room; computing the intensities F of polluting sources which produce polluting components based on the determined ventilation rate Q and the concentrations of the polluting components contained in monitored pollutants; and analyzing the indoor environment based on the monitored environmental data and the computed intensities of the polluting sources. By adopting the method and the system, the concentrations of a plurality of polluting sources in the indoor environment can be monitored in real time, and the air quality can be evaluated and analyzed according to monitoring data.

The present invention relates to an energy-saving window or door with bidirectional heat-preserving air change and air purification functions. The energy-saving window or door can realize bidirectional heat-preserving air change when being closed, not only discharging the polluted indoor air but also bringing the purified outdoor air into the room, and moreover, in the process of air change, an air heat exchanger arranged in a window frame or a door frame can carry out the sufficient redemption of heat and humidity between the indoor air and the air brought in from the outside in order to ensure that the indoor temperature and humidity cannot be changed. In addition, if flu or SARS is rampant, the energy-saving window or door can be switched from the bidirectional air change mode to an indoor air circulation mode, the indoor air circulation mode utilizes titan apatite and luminous optic semiconductor catalyzer loaded in a photocatalytic sterilization unit arranged in a third air chute to actively and dynamically sterilize and purify the indoor air, the sterilization rate can reach 99.9 percent, and thereby, the health of the human body can be protected. Furthermore, the energy-saving window or door can use the power provided by a photovoltaic cell, thus realizing energy saving and emission reduction.

The invention relates to an air conditioner with independent humidity/temperature control and relates to the air conditioning technique. The air conditioner is characterized in that: the air temperature and humidity are independently controlled according to the user's requirement. With the popularization of various architecture energy-saving techniques, the proportion of heat load to moisture load is changed and the proportion of moisture load is increased relatively, and the importance of moisture load control is more outstanding. The independent humidity/temperature control technique can reduce cold control load of the air conditioner, improve comfort and precision of the air conditioner and remarkably reduce energy consumption. The air conditioner comprises an indoor unit and an outdoor unit. The indoor unit comprises a fan (1), an air-cooled heat exchanger (2), an air-air return heat exchanger (3), a cooling medium (4) and a humidity/temperature control mechanism (5). The indoor unit can be independently used in a central air-conditioning system. The air conditioner meets the national requirement for controlling temperature at 26 DEG C in summer, and is conducive to update of the air conditioning technique.

The present invention provides a heat exchanger unit (5) that can appropriately inhibit freezing of a heat exchange element (11), even in cold-climate regions. The heat exchanger unit (5) performs heat exchange and ventilation between an indoor space (SI) and an outdoor space (SO), and is therefore provided with a heat exchange element (11), a supply air passage that is routed via the heat exchange element (11), an exhaust air passage that is routed via the heat exchange element (11), a temperature sensor (51), and a control unit. The temperature sensor (51) detects the outside air temperature. The control unit executes a first freeze inhibit control mode and a second freeze inhibit control mode. The first freeze inhibit control mode inhibits freezing of the heat exchange element (11) if the outside air temperature falls below a first level. The second freeze inhibit control mode, which inhibits freezing more strongly than the first freeze inhibit control mode, inhibits freezing of the heat exchange element (11) if the outside air temperature falls below a second level (which is lower than the first level).

The invention discloses a vehicular ventilation control system. The vehicular ventilation control system comprises a parameter collecting module, a ventilation control module and a ventilation execution module. The parameter collecting module is used for collecting environment parameters of vehicles, and the environment parameters at least include the parameter of vehicle inside and outside environment information including vehicle inside and outside temperature information. The ventilation control module is used for judging whether collected data meet a preset ventilation condition or not, if yes, an instruction making the ventilation execution module in an execution mode is generated, and if not, an instruction making the ventilation execution module in a stopped state is generated. The ventilation execution module is used for responding the instructions sent out by the ventilation control module. The vehicular ventilation control system can automatically recognize vehicle inside and outside environment parameters and automatically control ventilation and air change in the vehicles according to preset ventilation conditions so that the environment parameters in the vehicles can be maintained within a preset range.

The invention relates to an internal combustion steam engine that is based on the internal combustion thermodynamic generator. The variable radiators are taken out from the traditional engine, while the warm keep cover, and heat absorbing water spray system formed by water tank, low pressure water pump, water cooling heat exchanger, high pressure pump, high water sprayer, are installed on the outside of traditional engine and connected through the water delivery pipe according to the above order, thereof, the high pressure water sprayer if installed on the high temperature part of the firebox; besides, by reforming the fuel atomization and spraying device onto the air-changing channel to make engine save energy and the more environment-protective.

Ventilating device (1) comprising a casing (6) intended to channel at least one air flow (3) created by a blower wheel (5), the said casing (6) delimites a main air channel (7) in which a main air flow (3a) circulates and a secondary air channel (8) intended to bring towards a motor (4) a secondary air flow (3b) in order to cool the motor (4), the said secondary air channel (8) comprising a inlet (11) arranged in a main channel wall (7c) and a outlet arranged in a plan containing a casing end by which the wheel (5) is introduced, the said secondary channel (8) further comprising a means intended to change at least twice the direction of the secondary air flow (3b) when the secondary air flow (3b) passes through the secondary air channel (8).

The invention aims to overcome the defects of existing equipment control logic, and provides an intelligent fresh air and air conditioning linkage control management method. Fresh air and air conditioning selective intelligent management is realized by making full use of fresh air system and air conditioning linkage management logic, outdoor low-temperature air is maximally delivered into a machine room by indoor and outdoor temperature difference comparison and logic control, indoor hot air is exhausted out of the machine room by an exhaust system, the temperature of an indoor working environment is reduced by high heat ventilation effects, and a normal working environment is effectively provided for indoor devices on the premise of maximally saving energy. By the aid of the control logic, the energy-saving rate of the machine room is increased from 30% to 60%, more than half of energy can be annually saved for the machine room when each device is used in an online manner, long-time operation of an air conditioner is effectively reduced, and the operating life of the air conditioner is prolonged.

The invention provides an underground ventilated premixing chicken house which comprises a gable wall, side walls, a roof and a floor. An inner room is further arranged in the middle of the chicken house, partition plates are arranged in the side walls and inner walls in a sealed mode, and an air inlet plate is arranged between the two inner walls. A plurality of fans and a plurality of air inlet windows are uniformly arranged on the inner top. A plurality of wet curtains and exhausting ports are formed in the side walls, and air outlet grooves are uniformly formed in the inner walls. An underground exhausting bin is arranged below the floor, an exhausting pipe and a fan are arranged on one side of the underground exhausting bin, and an air outlet is formed in the upper end of the exhausting pipe. The underground ventilated premixing chicken house has the advantages that fresh air about to enter the chicken house and air in the upper layer of the chicken house are premixed, the premixed air is uniformly discharged into the inner room through a pressure bin, vitiated air settling to the lower portion of the chicken house is smoothly discharged out through the underground exhausting bin and/or exhausting ports formed in the side walls, the vitiated air settling to the lower portion of the chicken house can be well discharged out, and overall air change in the chicken house is uniform.

The invention provides a resource utilization process for clean hemp biological degumming and waste thereof. The process comprises: adopting a wax-like bacillus WM20091116 strain as a degumming strain; pre-wetting a hemp billet; performing field planting on degumming bacteria; performing heat insulation, moisture preservation, air change, nutrient solution replenishment, pH adjustment, differential temperature incubation and mechanical kneading; and rinsing the obtained product with clear water to obtain high-quality hemp fiber. Rinsing liquid is filtered through inorganic ceramic membrane, and filter residue solids, sawdust and rice husk are mixed, stacked and then used as a flower soilless culture matrix. Filtrate which is heated, concentrated, treated with ethanol, precipitated, subjected to pressure filtration and then dried can be used as coagulant in culture media. The filtrate combined with supernatant poured out can be prepared into wettable powder serving as biological pesticide. The process has the advantages of low energy consumption, no off-flavor during the treatment of hemp and high resource utilization degree, and the hemp fiber produced is high in long fiber content, high in fiber strength, low in loss and capable of meeting combing-spinning requirements well.

The invention relates to the technical field of fresh air, in particular to a fresh air system. The fresh air system aims to solve the problems of influence of an existing fresh air system on the indoor temperature and humidity adjustment. The fresh air system comprises an air humidity adjusting device and a heat exchanger, wherein the air humidity adjusting device selectively communicates with afirst air duct, a second air duct, a third air duct and a fourth air duct so as to switch the operation mode of the fresh air system, and the heat exchanger stretches across the second air duct and the third air duct and is used for driving a working medium in the heat exchanger to circularly flow in the two air ducts by utilizing temperature difference of air flow in the two air ducts. The indoorand outdoor temperature difference is large in summer, the portion, which is located in the second air duct, of the heat exchanger serves as an evaporation end, the portion, which is located in the third air duct, of the heat exchanger serves as a condensation end, the working medium in the evaporation end flows to the condensation end after absorbing heat and evaporating, heat release and condensation are carried out at the condensation end, in the process, outdoor high-temperature air enters an indoor space from an indoor air supply port after being cooled, so that a precooling effect on the outdoor air is achieved, and the purpose that the fresh air system only exchanges air but does not exchange heat is achieved.