130 results about "Heat recovery ventilation" patented technology

The vehicle ventilation module includes a return air duct, a fresh air duct, a heat exchanger, and first and second doors. The return air duct has a return air inlet and a return air outlet downstream of the return air inlet. The fresh air duct has a fresh air inlet and a fresh air outlet downstream of the fresh air inlet. The heat exchanger thermally coupled to the return air duct and the fresh air duct. The heat exchanger is upstream of the return air outlet and the fresh air outlet, and downstream of the return air inlet and the fresh air inlet. The first door joins the return air duct and the fresh air duct upstream of the heat exchanger. The second door joins the return air duct and the fresh air duct downstream of the heat exchanger. The first door and the second door are operable to selectively open and close in order to allow air to pass between the fresh air duct and the return air duct.

The present invention relates to a heat exchanger, a method for manufacturing the same, a heat recovery ventilator (HRV) including the same, and a method for defrosting and checking operations thereof.

The invention relates to a heat recovery solution dehumidifying fresh air handling unit, which is characterized by comprising a solution circulating system, a heat pump system and an evaporative cooling water system, wherein the solution circulating system comprises a two-stage total heat recovery module, a dehumidifying module and a regeneration module; the two-stage total heat recovery module is connected with a solution circulating pump to form a total heat recovery unit; the dehumidifying module is connected with the regeneration module to form an inter-stage solution circulation loop; the heat pump system comprises a heat pump circulation loop, which is comprised of a compressor, a first condenser, a throttle valve, an evaporator and a second condenser; the heat exchange end of the second condenser is connected with the corresponding regeneration module through the solution circulating pump to form a solution heating loop; the heat exchange end of the evaporator is connected with the corresponding dehumidifying module through the solution circulating pump to form a solution cooling loop; and the evaporative cooling water system comprises a water heating loop formed by communicating an evaporative cooling module with the heat exchange end of the first condenser through a water circulating pump. The heat recovery solution dehumidifying fresh air handling unit can be widely applied on occasions where dry fresh air is needed to be supplied.

A modular heat recovery ventilation system includes a modular heat exchanger and a modular apparatus spaced from the heat exchanger for delivering both fresh air and exhaust air to the heat exchanger. The apparatus includes separate blowers for generating two separate air streams. The apparatus includes an access plate at the bottom thereof allowing access to the interior of the enclosure of the apparatus through a ceiling.

The invention discloses a fresh air processing device with a heat recovery function. The fresh air processing device with the heat recovery function comprises a casing protective body and a connecting mechanism of the casing protective body and a window; an electrical control device, a forced air circulation device, a heat recovery micro-channel heat pipe exchanger and a separating plate are arranged in the casing protective body; the separating plate is used for separating fresh air from indoor exhaust air; the fresh air processing device is divided into two working areas through the separating plate; a heat pipe condenser is arranged in one working area; a heat pipe evaporator is arranged in the other working area; the heat pipe condenser, the heat pipe evaporator and a non-steam compression refrigeration piece are formed into a refrigeration system; the heat recovery micro-channel heat pipe exchanger is placed in a fresh air intake channel and an indoor exhaust channel. Accordingly, energy recovery can be performed first and then the fresh air can be cooled through refrigeration in the process of introduction of the fresh air and accordingly the purpose of further dehumidification and cooling can be achieved.

The invention discloses a coal-fired boiler smoke purifying and waste heat recovery treating system. The coal-fired boiler smoke purifying and waste heat recovery treating system comprises a waste heat exchanger, a smoke super purifier, a washing and spraying system and a smoke super purification cooler, wherein the waste heat exchanger comprises a waste heat absorber and a waste heat evaporator, the waste heat absorber is arranged on a desulfurizing tower smoke inlet pipeline, the smoke super purifier is arranged on a desulfurizing tower smoke outlet pipeline, smoke subjected to desulfurizing treatment enters the smoke super purifier to be condensed, and the washing and spraying system is used for spraying and washing separated-out harmful smoke; and the waste heat evaporator is arranged on a smoke pipeline between the smoke super purifier and a chimney, connected with the waste heat absorber and used for smoke for waste heat heating, and after the temperature of the smoke is raised, the smoke is exhausted through the chimney. The invention further discloses a corresponding treating method. By means of the system and method, waste heat in the high-temperature smoke can be effectively extracted, and the system utilizing waste heat recycled through the high temperature for reheating and discharging the smoke achieves the purposes of comprehensively saving energy and carrying out discharging in an environmental-friendly manner.

The invention relates to a novel solution humidifying fresh air unit with a heat recovery function. The unit mainly comprises a solution module, a refrigeration system, a full heat recovery unit and a humidifying module; the fresh air unit is characterized in that an outer cold and heat source is not needed, tap water does not need to be supplemented, indoor fresh air can be provided, the fresh air unit bears indoor wet loads and part of heat display loads, the characteristic that the saline solution can efficiently carry out sterilization is used for providing clean fresh air for the room; the isoenthalpy dehumidifying process is achieved, and the refrigeration efficiency is improved.

The invention discloses a drying system based on a heat pipe. The drying system based on the heat pipe comprises a hot-air system and the heat pipe, wherein the hot-air system and the heat pipe are arranged in parallel. The heat pipe comprises a heating section and a cooling section. An air inlet pipe of the hot-air system penetrates through the heating section. An exhaust pipe of the hot-air system penetrates through the cooling section. According to a use method of the drying system, the hot-air system and the heat pipe are arranged in parallel, the heat pipe comprises the heating section and the cooling section, the air inlet pipe of the hot-air system penetrates through the heating section, and the exhaust pipe of the hot-air system penetrates through the cooling section. The drying system based on the heat pipe has the advantages that a heat recovery device of the drying system is utilized in devices such as a printing machine, a compound machine and a coating machine for absorbing and utilizing more than 60 percent of exhaust air heat energy, 30 percent of hot air in a circulation system is directly recycled, 60 percent of the remaining 70 percent of the exhaust air heat energy is recycled, therefore, a heat recovery utilization rate of the whole system can reach more than 70 percent, and insufficient partial energy is supplemented by an electric heating device arranged in the drying system.

The invention discloses an integrated ventilation cooling heat recovery device. The device comprises an enclosed ventilation system, a single refrigeration system and a heat recovery refrigeration system, wherein the enclosed ventilation system comprises an air return segment, an air delivery duct, an air inlet filter, heating equipment and an air return duct which are connected to form a circulation air duct, the single refrigeration system and the heat recovery refrigeration system comprise a single refrigeration circulation system, a heat recovery refrigeration circulation system, a heating circulation system and a spraying circulation system, the enclosed ventilation system is used for realizing heat circulation of residual heat of the heating equipment, the single refrigeration circulation system and the spraying circulation system are utilized to remove a part of heat radiated by the heating equipment, the heat recovery refrigeration circulation system and the heating circulation system are utilized to realize recovery of the residual heat, and thereby economical heat exhaust and residual heat recovery of the equipment are realized. The device is advantaged in that water cooling risks can be avoided, problems of the poor air cooling effect and non-economical operation can be solved, environment noise of the equipment can be effectively controlled, and investment and operation cost are saved.

There is provided a refrigeration cycle apparatus in which an outdoor heat source unit, an indoor unit, and a water heating unit are connected, and an air conditioning operation and a water heating operation can be performed separately, and an exhaust-heat recovery operation can be performed by simultaneously performing air cooling and water heating. The outdoor heat source unit includes a compressor for compressing refrigerant, a refrigerant air-heat exchanger that performs heat exchange between the refrigerant and outside air, a fan for cooling the refrigerant air-heat exchanger, a control device that includes an inverter device for driving the compressor, and a heat sink for dissipating heat of the inverter device, and a switching element in the inverter device is constituted by an element formed by a wide bandgap semiconductor.

The invention relates to a variable frequency fan heat recovery ventilation system for livestock building four-season ventilation, which is mainly suitable for most national northern regions and also suitable for southern regions to use refrigeration air conditioners for cooling in summer. The system comprises a core body 1, a fan system, a bypass device, a cleaning filter device and an automatic control system. Aiming at the demand of high livestock building ventilation quantity, the combination mode and the parameter matching of a heat recovery core body and a ventilation fan are designed and developed, so that the relation between the heat recovery efficiency and the ventilation efficiency is balanced, the contradiction between the livestock ventilation and the heating/cooling energy consumption is solved, the emission of livestock waste gas and dust to the atmosphere is reduced, and the pollution of the livestock buildings to surrounding atmosphere is reduced; under the condition of not prominently reducing or raising the in-livestock building temperature, the in-livestock building air quality is improved, the disease generation rate is reduced, and the livestock building animal production performance is improved; and meanwhile, the bypass device, a variable frequency fan and the automatic control system are coupled to save the ventilation energy consumption and to reduce the investment cost of the livestock building ventilation system.

The invention relates to a central air-conditioning system combining the independent regulation of the temperature and humidity of heat recovery solution of a screw machine. The central air-conditioning system consists of a two-stage heat recovery circular regenerated solution system of the screw machine, an air-conditioning temperature reduction water system, a temperature reduction and dehumidification air conditioner processing system and a central air-conditioning comprehensive integration control system which combines the independent regulation of the temperature and humidity of two-stage heat recovery regenerated solution of the screw machine, wherein solution for temperature reduction and dehumidification is filled into the circular regenerated solution system; clean water is filled into the air-conditioning temperature reduction water system; and superconducting solution is filled between a heat exchanger and a solution regenerator. In the central air-conditioning system whichcombines the independent regulation of the temperature and humidity of heat recovery solution of the screw machine, the regenerated solution is subjected to two-stage heat recovery by utilizing the high-temperature exhaust gas of a screw air conditioner to be used for the dehumidification of a temperature reduction and dehumidification air conditioner; and the temperature is reduced by using the original air-conditioning water system, so the energy for the dehumidification is reduced, the temperature of the air-conditioning water for the temperature reduction is raised, the efficiency of an air-conditioning host is improved, and the consumption of a water pump, a cooling power and the air-conditioning host of the original air-conditioning water system is reduced greatly.

A ground source and air source coupling heat pump system with a heat recovery function comprises a ground source heat pump, an air source heat pump, an air processing unit and an embedded pipe, wherein at the load side: a surface cooling section water outlet of the air processing unit is connected with a cold-hot water pump and divided into two paths through an end c of a water return three-way adjusting valve, and one path is communicated with an end b of a water supply three-way adjusting valve b through a ground source heat pump evaporator; the other path is led to the end b from the end c of the water return three-way valve c and communicated with an end a of the water supply three-way adjusting valve; the two paths are switched into the surface cooling section after being collected at the end c of the water supply three-way adjusting valve; one a cold-hot source side: a water outlet pipe end of the embedded pipe is connected with a cooling water pump and divided into two paths after passing through a mode conversion valve V6 of a ground source heat pump condenser, one path is directly connected with an end a of a heat recovery three-way adjusting valve, and the other path is communicated with an end b of the heat recovery three-way adjusting valve after entering a reheating section; and the two paths are connected with a water inlet pipe end of the embedded pipe after being collected at an end c of the heat recovery three-way adjusting valve. The ground source and air source coupling heat pump system with the heat recovery function has the advantages that control is flexible, diver in selection, energy conservation in operation and the like.

An air conditioning device having an indoor heat exchanger, a heat recovery ventilator, a supply fan, and an exhaust fan inside a housing and configured to perform at least one of cooling/heating, heat recovery ventilation, and pure ventilation. The air conditioning device includes a first flow path configured to guide indoor air while the cooling/heating is performed, a second flow path configured to guide the indoor air toward the heat recovery ventilator, and a third flow path configured to guide outdoor air toward the heat recovery ventilator while the heat recovery ventilation is performed. The air conditioning device includes fourth and fifth flow paths configured to guide indoor air and outdoor air, respectively, and an inlet port that corresponds to the third flow path and the fifth flow path, and a discharge port that corresponds to outlets of the second flow path and the fourth flow path.

The invention provides a partial heat recovery control method and system. According to the partial heat recovery control method and system, directly starting conditions for directly starting a heat recovery water pump(without causing the problems such as low voltage protection) are formed on the basis of the pre-research on heat recovery conditions easily causing the problems such as low voltage protection, an air conditioner is set in a standby state (for avoiding the problems such as low voltage protection of a compressor), and then standby starting conditions for starting the heat recovery water pump are formed. On the basis of the formed starting conditions, the duration of the continuous operation of the compressor, the temperature of the water in a heat recovery water tank and the temperature of the inlet water of the heat recovery water tank are obtained in real time, and corresponding directly opening or standby opening control is performed on the heat recovery water pump when all obtained parameter data meets the directly opening conditions or the standby opening conditions. By means of the partial heat recovery control method and system, the opening of the heat recovery water pump is controlled according to different conditions, so that the reasonable control on the heat recovery of units is achieved, the occurrence of the problems such as low voltage protection is avoided, and the reliability of the units is improved.

A method and system is disclosed in which an air to air heat exchanger keeps two air streams separate through the use of metal fins. Edges of alternating fins are folded so that the end is in the proximity of the adjacent fin and the remaining gap is sealed. The fin stack is held together by interlocking features or through the use of a tube, in which case the fin stacks may be stamped and stacked on alignment stakes during production using the same holes as the tubes. The heat exchanger may have extended use in removing moisture and heat from a hot humid air stream. The heat exchanger has utility in heat recovery ventilation systems, clothes dryer heat recovery or other air to air heat exchanger processes where the pressure difference between the airstreams is less than approximately 5000 Pa.

The invention provides a temperature control multi-split heat pump system with a heat recovery function and a control method of the temperature control multi-split heat pump system with the heat recovery function. The temperature control multi-split heat pump system with the heat recovery function comprises a multi-split heat pump refrigeration system, a water tank, a first electromagnetic valve,a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve, a fifth electromagnetic valve, a sixth electromagnetic valve, an electric control box and a first electronic expansion valve, and all the components constitute a heat pump heat recovery module and an auxiliary heat exchange module of the system. The multiple electromagnetic valves are arranged so as to be alternately switched on and off to form different refrigerant flow channels. Heat generated during heat pump refrigerating is effectively used for heating water, so that heat recovery is achieved; and besides, the problems that by the adoption of an existing multi-split heat pump system, the supercooling degree of a liquid pipe and superheat degree of a gas return opening of a compressor are difficult to control and improve, and the temperature of an electric control module is difficult to lower are solved together.

The invention discloses a heat-recovery kitchen ventilator system having a cooking bench waste heat recovery function. The system comprises a heat recovery kitchen ventilator, an inlet valve, an outlet valve and a heat insulating water tank, wherein the heat recovery kitchen ventilator is formed by additionally arranging a heat exchanger component inside a common kitchen ventilator; one end of the inlet valve is connected with a tap water charging pipe; the other end of the inlet valve is connected and communicated with one end of the heat exchanger component in the heat recovery kitchen ventilator; one end of the outlet valve is connected and communicated with one end of the heat insulating water tank; the other end of the outlet valve is connected and communicated with the other end of the heat exchanger component in the heat recovery kitchen ventilator; by additionally arranging devices such as the heat exchanger component in the common kitchen ventilator, wasted energy can be well recycled for heating domestic water; energy is saved, environment is protected, power consumption of people is reduced, convenience is provided for living, and the system is simple in structure, convenient to maintain and low in manufacturing cost and satisfies the national environmental management concept.

The invention discloses coal gasification equipment having a heat recovery function. The coal gasification equipment having the heat recovery function comprises a gasifier, a heat recovery device, a scrubber tower and a slag water treatment device, wherein the gasifier is used for combustion gasification of carbonaceous matter; the heat recovery device is connected with the gasifier and used for recovering heat contained in high-temperature high-pressure gas obtained after combustion in the gasifier; the scrubber tower is communicated with the gasifier and used for performing scrubbing dust collection on raw gas; the slag water treatment device is communicated with the scrubber tower and used for concentrating fine slag to recycle slag water. According to the coal gasification equipment having the heat recovery function, the rate of multipurpose utilization of coal can be increased, and energy is saved.

A countercurrent heat recovery ventilation system includes an air module assembly and heat exchanger assembly. Air module assembly made from front and back panels connected by two side panels, base plate fixed with the side panels and placed parallel between side panels and a double side radial impeller with a shaft, an electric drive form two hydraulically isolated flow canals with inlet and outlet openings.

The heat exchanger assembly comprises a heat-exchanger that could be done as changeable flow side heat-exchanger made as folded corrugated fins or plates, thus each of the both flow passages split in separate flow channels. Every other channel is sealed to flow from flow same direction forcing the flow to be in opposite direction in all adjacent cannels. This forms two hydraulically isolated flow passages with intake and outtake openings connected respectively with outlet and inlet openings of the air blower assembly.

The system is an integrated solar energy system which provides solar generated electricity by photovoltaic panels, provides solar generated hot water by solar collector thermal panels and which has a heat recovery ventilation system which can provide heated or cooled air. The system further provides a durable long lasting roof membrane.

The invention discloses a waste heat recovery ventilator. The side, close to a return air inlet, in a ventilator shell is provided with two heat exchangers in the vertical direction, a heat isolation air channel is arranged between the return air inlet face of the first heat exchanger and the return air inlet, a first isolation air channel and a second isolation air channel are arranged between the return air outlet face of the first heat exchanger and the return air inlet face of the second heat exchanger, and a third isolation air channel is arranged between the return air outlet face of the second heat exchanger and an air exhaust port. According to the waste heat recovery ventilator, the heat isolation air channel, the three isolation air channels and return air channels of the first heat exchanger and the second heat exchanger together form a sealed and isolated air exhaust channel in the ventilator shell, and explosion preventing and solvent corrosion resisting treatment and extra heat insulation treatment on the ventilator shell of the whole ventilator are avoided. The waste heat recovery ventilator can be used for performing heat recovery on waste gas of all drying boxes of a multi-color gravure printing machine or waste gas of a compound machine and supplying gas to all the drying boxes simultaneously.