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1883results about "Energy recovery in ventilation and heating" patented technology

Fresh air conditioner

The invention relates to the field of heating ventilation air conditioners, in particular to an improved air treatment method and a fresh air conditioner device. The invention improves the problems of traditional fresh air treatment and air conditioners and particularly emphasizes that a plate-type air-air heat exchanger and indirect water evaporative cooling are used for recycling energy of sensible heat and latent heat in air exhaust in the fresh air treatment process of damp and hot regions in summer and condensed water is directly evaporated on an evaporator to improve the working condition of a compressor. Under the condition of quantificationally supplying outdoor fresh air, the energy efficiency ratio of the fresh air conditioner is increased, the thermal pollution, damp pollution and noise pollution of the fresh air conditioner to environments are reduced, the indoor air quality is improved, and meanwhile, the fresh air conditioner provides the manufacture, installation and using convenience for a local region all-air central air conditioner. The fresh air conditioner provided by the invention and a design and manufacture method of the fresh air conditioner are applicable throughout the year in various regions, particularly in the damp and hot regions; and the fresh air system provides controlled, comfortable and healthy air environments for indoor activity space of people and air conditioner environments for technology for processing, storage and the like.
Owner:张洪

Heat recovery type multi-connection air condition unit

The invention discloses a heat recovery type multi-connection air condition unit, comprising at least one outdoor unit, a plurality of indoor units and at least one hot and cold converter. The outdoor unit comprises a compressor, an outdoor heat exchanger, a subcooler, two four-way reversing valves and three refrigerant pipelines; each indoor unit comprises an indoor heat exchanger; and the hot and cold converter comprises expansion valves and a bypass capillary, wherein the expansion valves control the on-off of a high pressure air pipe and a low pressure air pipe, and the bypass capillary is arranged between the high pressure air pipe and the low pressure air pipe. When the indoor unit connected with the hot and cold converter is used for heating, the expansion valve at the high pressure air pipe side is turned on and the expansion valve at the low pressure air pipe side is turned off to realize the connection of the air pipe of the indoor unit and the high pressure air pipe. When the indoor unit connected with the hot and cold converter is used for cooling, the expansion valve at the low pressure air pipe side is turned on and the expansion valve of the high pressure air pipe is turned off to realize the connection of the air pipe of the indoor unit and the low pressure air pipe. By the air condition unit, the combination of the units as well as the function of two-pipe heat pump air condition can be realized, and the common two-pipe heat pump air conditioner and the heat recovery type air conditioner capable of cooling and heating simultaneously are effectively combined.
Owner:QINGDAO HISENSE HITACHI AIR CONDITIONING SYST

Building exhaust and air conditioner condenstate (and/or other water source) evaporative refrigerant subcool/precool system and method therefor

First, a system for providing liquid refrigerant subcooling, subsequent to that subcooling accomplished by the primary condenser of an air conditioner or heat pump, by means of evaporative cooling utilizing the condensate water of said air conditioner or heat pump system and/or some other water supply to wet the surface of the subcool heat exchanger and then passing the cold, dry building exhaust air required for good indoor air quality across the wetted surface of the subcool heat exchanger. Said exhaust air could be used after first undergoing a sensible heat exchange with the incoming make up air. Said subcooling providing for an increased refrigeration capacity, and efficiency of the system. Secondly, a system for providing hot gas discharge refrigerant precooling before said hot gas passes into the primary condenser of an air conditioner or heat pump, by means of evaporative cooling utilizing the condensate water of said air conditioner or heat pump system and/or some other water supply to wet the surface of the precool heat exchanger and then passing the cold, dry building exhaust air required for good indoor air quality across the wetted surface of the precool heat exchanger. Said precooler providing lower power consumption of the compressor, lower head pressure, increased mass flow of the refrigerant and improved efficiency of the primary condenser of the air conditioning or heat pump system. Said exhaust air could be used after first undergoing a sensible heat exchange with the incoming make up air on either the subcooler or precooler. Finally, a combination subcooler and precooler system where the cold dry exhaust air is first used to evaporatively subcool the liquid refrigerant in the water wetted subcooler and then subsequently used to conductively cool the hot gas refrigerant passing through a dry surface precooler or alternately used to evaporatively cool the wetted surface of the precooler thereby evaporatively precooling the hot gas refrigerant passing through the precooler.
Owner:GLOBAL ENERGY & ENVIRONMENT RES INC +1

High-precision constant-temperature and humidity air conditioner operated in wide temperature range

The invention relates to a high-precision constant-temperature and humidity air conditioner operated in a wide temperature range. The air conditioner comprises an outdoor machine and an indoor machine, wherein the outdoor machine is provided with a condenser and a condensing fan; the indoor machine comprises an evaporator, a thermal recovery exchanger, an electric heater, a humidifier and a blower; and a compressor is formed by connecting in parallel a constant-frequency compressor and a variable-frequency compressor (or a digital scroll compressor) and is arranged in the indoor machine. As the system adopts frequency conversion technology or digital vortex technology and electronic expansion valve technology and unique classified evaporator control, condenser fan frequency-conversion control technology and evaporator frostless structural design, the air condition broadens the use environment range, indoor temperature control environment (between 7 and 30 DEG C) and relative humidity control environment (between 35 and 70 percent RH), can be reliably operated in the outdoor high-temperature environment of 45 DEG C, also improves the controlling precision of indoor temperature and humidity, and is applicable to places with severe requirements on temperature and humidity and large environmental temperature change.
Owner:广东吉荣空调有限公司

Communication equipment room energy-conserving system

The invention discloses an energy-saving system in a communication room, which improves the refrigeration efficiency of the air conditioner, has good energy-saving effect, saves the running cost and prolongs the service life of the air conditioner. The energy-saving system comprises a precise air conditioner (30), a control device (70), a relay (71), a water box (3) and a supercharging pump (4); the precise air conditioner (30) comprises an outdoor condenser (1), an indoor evaporator (2) and a heat dissipation fan (10); the water box (3) is connected with a water inlet pipe (5) which is provided with a water inlet valve (51); the water inlet of the supercharging pump (4) is communicated with the water box (3); the water outlet of the supercharging pump (4) is divided into two passages: one passage is connected with a plurality of atomizing spray heads (7) and the pipeline is provided with a spraying electromagnetic valve (61); the other passage is connected with a plurality of cleaning spray-head (8) and the pipeline is provided with the cleaning electromagnetic valve (62); and the positions of the spraying electromagnetic valve (61) and the cleaning electromagnetic valve (62) correspond to the fin of the outdoor condenser (1). The energy-saving system can be widely applied to the energy-saving field of the communication system.
Owner:珠海横琴博信能源建设有限公司

Air processing device and method

The invention relates to an air processing device and method. The air processing device comprises a shell body. An indoor air inlet, an outdoor air inlet, a fresh air outlet, a turbid wind inlet and a turbid wind outlet are formed in the shell body. The shell body is internally provided with a fresh air channel and a turbid wind channel which are isolated with each other. The fresh air channel is used for communicating the indoor air inlet, the outdoor air inlet and the fresh air outlet. The turbid wind channel is used for communicating the turbid wind inlet with the turbid wind outlet. A purification dedusting module fresh air blower, a refrigerating and heating device and an air inlet converter used for closing the indoor air inlet or the outdoor air inlet are arranged in the fresh air channel. Accordingly, the fresh air channel not only can be communicated with the indoor air inlet to achieve the purpose of the circulation and purification of indoor air, but also can be communicated with the outdoor air inlet to achieve the purpose for improving the quality of the indoor air after outdoor fresh air is purified and then gets into the indoor, and the purpose for regulating the air temperature can be achieved as well. According to the air processing device and method, the device is extensive in use and capable of greatly reducing the purchase cost and the occupied space.
Owner:青岛莱菲尔电器有限公司
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