4727 results about "Evaporator" patented technology

The invention relates to an ice crystal evaporator and an ice crystal water cooling device producing from the same, belonging to the technical field of refrigeration. The ice crystal evaporator is characterized in that a liquid inlet channel is formed by an evaporator tube, a liquid inlet and a liquid outlet in a tubular casing; and the outer channel of the evaporator tube of the tubular casing is divided into more than one S-shaped channel forming a water return channel through a water inlet of a water divider and a water outlet of a water collector. The ice crystal water cooling device is characterized in that the return air inlet of the ice crystal evaporator is communicated with a compressor, a condenser, a liquid feeding valve, a dry filter, a liquid feeding electromagnetic valve anda thermostatic expansion valve in sequence, and then is communicated with the liquid inlet of the ice crystal evaporator; a cooling water inlet / outlet of the condenser is connected with a cooling tower in series; and a water inlet / outlet of the ice crystal evaporator is communicated with a water circulating pump and an ice crystal energy storage tank in series. The invention has the advantages ofhigh cooling efficiency, no icing and low cooling temperature and is suitable for production of energy storage central air-conditioning, marine fishing, seafood processing, fruit, vegetable or meat processing, and the like; the cooled medium is municipal water.

The invention relates to a complex solution evaporator which is composed of a shell, a heat exchange assembly, a transmission assembly, a bearing sealing assembly, a frame supporting assembly, an auxiliary discharging assembly, a defoaming assembly, a pipeline assembly and a control assembly. The shell comprises a shell body, a left side end plate and a right side end plate, and the heat exchange assembly is installed in the middle area in the height direction of the shell body and composed of a plurality of heat exchange plate sets arranged side by side. And the upper area of the shell is a gas-liquid separation area and is provided with a defoaming assembly. The lower area of the shell is a salt settling area, and an auxiliary discharging assembly is installed. A secondary steam outlet and a feed port are formed in the top of the shell, and a condensate outlet and a discharge port are formed in the bottom of the shell. A stirring shaft of the transmission assembly transversely penetrates through the middle of the heat exchange plate set, and a plurality of scrapers are fixed to the stirring shaft. The pipeline assembly comprises a steam inlet pipe set and a condensate pipe set. The steam inlet pipe set is connected with a plate set medium connector above the heat exchange plate set, and the condensate pipe set is connected with a plate set medium connector below the heat exchange plate set.

The invention relates to a liquid air energy storage and terrestrial heat coordinated underground space air regulation and control system and method. Comprising a first-stage compressor, a second-stage compressor, a third-stage compressor, an expansion refrigerator, a first-stage compression heat exchanger, a second-stage compression heat exchanger, a third-stage compression heat exchanger, a cold box, a separator, a liquid air storage tank, a cryogenic pump, an evaporator, a cold storage circulating pump, a cold storage box, a compression heat exchange circulating pump, a compression heat storage box, a first heater, a second heater and a third heater. The system comprises a first air expander, a second air expander, a third air expander and a generator. The regeneration heater is used for guiding the compression heat generated by the compressor into the regeneration heater for regeneration and / or guiding the geothermal energy output by the geothermal energy output end into the regeneration heater for regeneration; the rotary wheel dehumidification device is used for performing cryogenic drying on the wet air; the fresh air processing unit is composed of a fresh air filter, a regeneration fan, a regeneration filter and an air supply fan.

The utility model provides a heat exchanger assembly and an air conditioner, the heat exchanger assembly comprises an evaporator assembly and a surface air cooler assembly, refrigerant is introduced into a heat exchange tube of the evaporator assembly, chilled water is introduced into a heat exchange tube of the surface air cooler assembly, and the evaporator assembly and the surface air cooler assembly are connected into a whole. The evaporator assembly is located at the upstream position of the surface air cooler assembly in the air flowing direction, when chilled water is mainly used for refrigeration, the surface air cooler assembly works, the evaporator assembly does not work, and air passes through the evaporator assembly to be not cooled and then passes through the surface air cooler assembly to be cooled. According to the utility model, the refrigeration effect is not worsened under the condition that the energy efficiency and the refrigeration performance are considered at the same time, and the required refrigeration effect is ensured.

The invention discloses an energy-saving efficient refrigerating unit and process for preventing cavitation of a steam condensate pump in the technical field of refrigeration. The energy-saving efficient refrigerating unit comprises a high-pressure generator, a medium-pressure generator, a high-pressure evaporator, the steam condensate pump, a composite power generation compressor and a refrigerating assembly. Heat of saturated steam condensate flowing out of the high-pressure generator is absorbed by the high-pressure liquid refrigerant through the high-pressure evaporator, and the saturated steam condensate is changed into supercooled steam condensate, so that cavitation cannot be generated when the supercooled steam condensate enters the steam condensate pump, an original mode of increasing the height difference between the generator and the steam condensate pump is replaced, and the production efficiency is improved. The cost of a unit pipeline is reduced, meanwhile, the cost of ultrahigh transportation is reduced, heat contained in saturated steam condensate is converted into pressure energy of a high-pressure gaseous refrigerant to be used for driving a composite power generation compressor to work, the pressure energy is converted into electric energy and pressure energy of a low-pressure gaseous refrigerant, and the electric energy is used for a solution pump. The deep utilization of the internal energy of the unit can be realized, and the COP of the unit is improved.

The invention discloses a rotating wheel dehumidification system operation control method and system. The dehumidification system comprises a dehumidification rotating wheel, a treatment air circulation unit arranged on the treatment side of the dehumidification rotating wheel and a regeneration air circulation unit arranged on the regeneration side of the dehumidification rotating wheel. The regenerated air circulating unit comprises an air heat exchanger, an electric heater and a heat pump heater; the heat pump heater comprises an evaporator, a condenser and a compressor; the control method comprises the steps that the temperature of regeneration air entering the dehumidification rotating wheel is detected to obtain the regeneration temperature; according to the regeneration temperature and a preset regeneration temperature threshold value, the heating power of the electric heater is dynamically adjusted, and the heating power is larger than or equal to zero and smaller than or equal to rated power. According to the scheme, regeneration exhaust heat can be recycled to the maximum extent, the energy efficiency ratio of the system is remarkably increased, dependence on a high-energy-consumption electric heater is reduced, the operation cost is saved, the regeneration temperature is dynamically controlled, and stable operation under different working conditions is ensured.

The invention discloses a multi-temperature-zone collaborative refrigeration system and an energy-saving control method for a variable-temperature refrigeration house, and belongs to the technical field of refrigeration house temperature control, and the method comprises the steps of calling a dynamic load prediction model based on an obtained initial real-time monitoring data set, and calculating thermal load change trend data of each temperature zone in a preset time period; the electronic expansion valve is adjusted and a start-up control instruction is generated by combining the thermal load trend and the cargo temperature and humidity requirements, and the refrigerating unit is started, stopped or switched to operate the system; during system operation, the central oil way management module is started, and the oil level of a compressor is monitored and compared with a preset safety threshold value to generate an oil way adjusting instruction; starting an intelligent oil pump to convey oil according to the instruction, and performing closed-loop control on an electronic expansion valve by taking the superheat degree or the pressure value of an evaporator outlet as a feedback signal; summarizing data of the execution mechanism and the sensor and feeding back to the central controller to form a closed loop; according to the invention, multi-temperature-zone coordinated regulation and control are realized, the refrigeration efficiency and the equipment safety are improved, and the energy consumption is reduced.

The invention relates to the technical field of coalification black water treatment, and particularly discloses a coal gasification black water flash steam waste heat steam turbine gradient utilization system which comprises a black water flash steam turbine module and a steam exhaust condensation module. The black water flash steam turbine module comprises a high-pressure flash evaporator, a low-pressure flash evaporator, a vacuum flash evaporator, a supplementary condensing steam turbine, a generator and a settling tank, and a water outlet of the vacuum flash evaporator is connected with the settling tank; the steam exhaust condensation module comprises an evaporative condenser and a condensate pump. Through the design of the scale scraping and water uniformizing piece, part of cooling water falling around the heat exchange coil from top to bottom falls on the water uniformizing plate to drive the water uniformizing plate to rotate, when the water uniformizing plate rotates, water on the water uniformizing plate is thrown out under the action of centrifugal force, cooling water without heat exchange can be uniformized to other heat exchange pipes for heat exchange, and the heat exchange efficiency is improved. Therefore, the cooling water flows more uniformly among the heat exchange coils, the utilization rate of the cooling water is improved, and the heat exchange efficiency is improved.

The utility model discloses a heat management system based on an air floatation centrifugal compressor and a machine room. The heat management system comprises the air floatation centrifugal compressor, an evaporator, a condenser and a throttling element. An air inlet of the air flotation centrifugal compressor communicates with an outlet of the evaporator, a liquid cooling module is arranged in the air flotation centrifugal compressor to cool a motor of the air flotation centrifugal compressor, an inlet of the liquid cooling module is connected to an outlet of the condenser through a first control valve, and an outlet of the liquid cooling module is connected to an inlet of the evaporator. The evaporator is arranged at the to-be-cooled device to absorb heat emitted by the to-be-cooled device. An inlet of the condenser communicates with an exhaust port of the air flotation centrifugal compressor, and the throttling element is arranged at an inlet of the evaporator and used for conducting throttling expansion on the cooled refrigerant. The heat management system is applied to the machine room, an oil separator and corresponding pipelines are omitted, the overall structure is simple, and meanwhile the heat dissipation efficiency can be improved.

The utility model discloses a heat pump drying system which comprises a dehumidification reheating heat pump system, a heat pump system, a heat pump system and a heat pump system. The heat storage water tank is located below the first evaporator and used for storing condensate water generated by the first evaporator; the heat recovery heat pump system comprises a second compressor, a second condenser, a second throttling device and a second evaporator which are connected in sequence; the second evaporator is connected with the heat storage water tank and used for providing heat for the second condenser through water in the heat storage water tank. The second condenser communicates with the air inlet of the drying room and is used for conducting secondary heating on the inlet air entering the drying room. The problems that in the prior art, condensate water in a heat pump drying system is not effectively utilized, and heat is wasted are solved, dehumidification condensate water heat is fully utilized, the air supply temperature is increased, the whole machine energy saving performance of the heat pump drying system is improved, and the temperature regulation and control range of the drying process is widened.

The invention relates to the field of uranium concentration, and discloses an energy-saving device and method for drying a first-batch centrifugal unit. According to the device, an inlet of a centrifugal machine is connected with an outlet of an evaporator through a pipeline provided with a fourth cooling valve and an eighth cooling valve and is connected to the secondary side of a cooling plate heat exchanger and the secondary side of a heating plate heat exchanger respectively; an outlet of the centrifugal machine is connected with an inlet of the evaporator through a sixth cold valve, a first cold valve and a second water pump. An inlet of the sixth cold valve is connected with the secondary side of the heat supply plate heat exchanger through a first water pump. The primary side of the cold supply plate heat exchanger is connected with a newly-built cooling tower loop, and the primary side of the heat supply plate heat exchanger, the condenser and the newly-built cooling tower form circulation. By optimizing system connection and a heat energy circulation path, the energy utilization efficiency and the equipment utilization rate are effectively improved, and the investment and operation cost is remarkably reduced.

The refrigerator includes: a main body; a storage chamber formed inside the main body; a door provided so that the storage compartment can be opened and closed; an evaporator that evaporates the refrigerant to generate cold air; an evaporator duct disposed at a rear side of the storage compartment to supply the cold air generated by the evaporator to the storage compartment; and a thermoelectric cooling device including a thermoelectric element having a heating unit and a cooling unit. The thermoelectric cooling device is configured to heat air from the outside of the main body by the heating unit and discharge the air heated by the heating unit to the outside of the main body, cool air from the storage compartment by the cooling unit, and supply the air cooled by the cooling unit to the storage compartment, and is disposed above the storage compartment.

The invention discloses a PEMFC (proton exchange membrane fuel cell)-ORC (organic Rankine cycle)-TEG (thermoelectric generator) coupling-based waste heat utilization system and a coupling method. A PEMFC module, an ORC module and a TEG module are coupled; the system comprises a fuel cell, a TEG assembly, a condenser, a delivery pump, a pressure pump, a cooling water storage tank, an evaporator, an expansion machine, a filter, a humidifier, an ejector, a compressor and an electromagnetic valve. Heat carried by cooling water in the PEMFC cooling system is used as a main energy source for waste heat recovery. As the heat taken away by the cooling water is far greater than the directly discharged waste heat, the cooling water has higher enthalpy value and excellent heat recovery potential. By constructing a reasonable heat recovery path and a heat exchange network, the waste heat gradient utilization efficiency can be remarkably improved, and the higher primary energy utilization rate is achieved. And efficient recovery and gradient utilization of the waste heat of the PEMFC are realized.

The utility model discloses a black water waste heat high-quality recycling system which comprises a high-pressure purification flash evaporator, a low-pressure purification flash evaporator, a high-flash tank and a low-flash tank, black water is sequentially subjected to four times of flash evaporation stripping, flash steam generated by the high-pressure purification flash evaporator and flash steam generated by the low-pressure purification flash evaporator respectively act with an evaporator to generate saturated steam, and the saturated steam is separated from the low-flash tank. The saturated steam can meet different process applications after being pressurized by the steam pressurizing device; the high-flash condenser is used for condensing high-flash steam discharged by the high-flash tank, non-condensable gas enters a torch treatment pipeline, and condensed water is recycled in the process; the low flash tank is used for receiving the liquid part discharged by the high flash tank; the low-flash condenser is used for condensing low-flash steam in the low-flash tank and then returning the condensed low-flash steam to a process system for recycling; and the demineralized water preheater is used for receiving part of the low-flash liquid discharged by the low-flash tank to preheat the demineralized water. According to the utility model, the waste heat of black water can be extracted in a grading manner and efficiently utilized.

The refrigeration house condenser waste heat recovery energy-saving system comprises a refrigeration module, the refrigeration module is connected with a first heat energy recovery module, and the first heat energy recovery module is connected with a user side; the refrigeration module comprises a compressor, a first condenser, a first expansion valve and a first evaporator, the compressor is communicated with the first condenser, the first condenser is communicated with the first expansion valve, the first expansion valve is communicated with the first evaporator, and the first evaporator is communicated with the compressor; the first heat energy recovery module comprises a first water pump and a first adjusting valve connected with the first water pump in parallel, and the first adjusting valve and the first water pump are connected with a water supply source and communicate with the first condenser. The first condenser is connected with a second regulating valve, the second regulating valve is respectively communicated with one end port of a third regulating valve and one end port of a fourth regulating valve, the third regulating valve is communicated with the first condenser, and the fourth regulating valve is connected with a user side. The system improves the utilization rate of primary energy in the operation process of the refrigeration house.

A condensate water treatment system of a refrigeration type range hood comprises a compressor, an indoor unit module, an outdoor unit module and a water storage box, the indoor unit module comprises an evaporator and an indoor unit fan, the indoor unit fan is provided with a volute and an impeller, an indoor unit water pan is arranged below the evaporator, and a water outlet is formed in the bottom of the indoor unit water pan. An inlet of the three-way valve is communicated with the water outlet, a first outlet of the three-way valve is communicated with the water inlet end of the purified water inlet pipe, a second outlet of the three-way valve is communicated with the water inlet end of the sewage inlet pipe, and the water storage box is divided into a purified water area and a sewage area. The water outlet end of the purified water inlet pipe is communicated with the purified water area, and the water outlet end of the sewage inlet pipe is communicated with the sewage area. According to the condensate water treatment system of the refrigeration type range hood, self-cleaning of the evaporator and cleaning of the fan impeller of the inner machine can be conducted, and sewage generated after self-cleaning flows into the sewage area of the water storage box through the sewage pipe and is prevented from being mixed with clean condensate water in the clean water area.

The invention discloses a fused salt steam generation system and a control method thereof. A high-temperature molten salt tank, a salt feeding pump, a molten salt channel of a second-stage superheater, a molten salt channel of a first-stage superheater, a molten salt channel of an evaporator, a molten salt channel of a preheater and a low-temperature molten salt tank of the system are communicated in sequence; the water supply end, the water supply pump, a steam-water channel of the preheater, the steam pocket, the pressure regulating valve, a steam-water channel of the first-stage superheater, the water spraying and temperature reducing device, a steam-water channel of the second-stage superheater and the steam removal end are sequentially communicated, and a descending pipe and an ascending pipe of the steam pocket are communicated with a steam-water channel of the evaporator. The control method aims at the system. The method has the advantages that the steam pocket pressure is actively adjusted during load rising, the liquid working medium is flashed, a load instruction can be quickly responded, steam is stably generated according to the instruction and merged into the steam turbine, and the stability and safety of the steam turbine are improved; the steam pocket of the evaporation system is used as steam storage equipment, so that an independent steam storage pocket is prevented from being arranged in the evaporation system, the cost is reduced, and the control logic is simplified.

The embodiment of the invention relates to the technical field of ice making, and discloses an evaporator and ice making equipment, the evaporator comprises a refrigeration stator, a roller, a feeding pipe and an exhaust pipe, the refrigeration stator is provided with an evaporation cavity and a first peripheral wall, and the first peripheral wall forms part of the boundary of the evaporation cavity; the roller sleeves the refrigeration stator, the roller is configured to rotate relative to the refrigeration stator, the roller is provided with a second peripheral wall, the first peripheral wall is located in the second peripheral wall, and a heat-conducting medium is filled between the first peripheral wall and the second peripheral wall; the feeding pipe is configured to allow a refrigerant medium to flow into the evaporation cavity; the exhaust pipe is communicated with the evaporation cavity. In this way, the risk of refrigerant medium leakage can be reduced.

A condensate water treatment system of a refrigeration type range hood is characterized in that in a condensate water receiving box on an evaporator, water in the water receiving box is conveyed to a condenser, water flowing back from the condenser flows back to the water receiving box through a water return pipe, the condensate water treatment system further comprises a cooling fan, a steam generator and a spraying pipe, the condenser is arranged on the upstream of the cooling fan in the air flowing direction, and the steam generator is arranged on the water receiving box. The spraying pipe is arranged in an air channel between the air outlet side of the condenser and the air inlet of the cooling fan, a steam outlet of the steam generator is communicated with an inlet of the spraying pipe, and a shutter grating with adjustable blade opening angles is installed on the air inlet side of the condenser. According to the condensate water treatment system of the refrigeration type range hood, air conditioner condensate water is adopted to clean the condenser, external water can be heated through the steam generator to generate high-temperature steam, the high-temperature steam is sprayed out of the spraying pipe to clean the condenser, and according to different working modes, the condensate water treatment efficiency is improved. And the opening angle of the blades of the shutter grille can be adjusted, and the intelligent degree is high.

The invention discloses a quick-cooling ice-making table water purifying and drinking machine. A water refrigerating device comprises a cold container water inlet pump, a cold container, a compressor, a drying filter, a condenser, a cold container evaporator, a reversing electromagnetic valve and a cold container water outlet pump. The ice making device comprises an ice making upper shell, an ice mold evaporator, a compressor, an ice mold evaporator, a deicing electromagnetic valve, a funnel assembly and an ice block conveying assembly, two evaporators, namely a cold container evaporator and the ice mold evaporator are arranged, and pure water in a cold container is refrigerated to 1-2 DEG C through cooperation of the cold container evaporator; when ice blocks are needed, the funnel assembly in the cold container moves upwards, full cold water is conveyed to the ice making module, the ice making module is matched with the ice mold evaporator to make the ice blocks, the funnel assembly moves downwards, the ice block conveying assembly moves to the position below the ice making module, the ice blocks are conveyed out of the ice outlet after ice melting, the whole ice making process is completed within 50 seconds, and quick ice making through cooling and quick ice block making are achieved. The ice blocks are used when being made, and the problems that the ice blocks breed bacteria, and no ice is stored and condensed are effectively solved.

The invention discloses a gas-liquid phase change compressed carbon dioxide energy storage system which comprises a gas storage unit, an energy storage unit, a liquid storage unit and an energy release unit which are sequentially connected in a closed loop mode, the energy release unit comprises a superheater, a high-pressure turbine, a reheater and a low-pressure turbine which are sequentially connected, and a second evaporator is arranged in an exhaust cylinder of the low-pressure turbine. The input end of the second evaporator is connected to the outlet end of the liquid storage unit, and the output end of the second evaporator is connected to the inlet end of the reheater. The second evaporator is configured to receive the liquid working medium from the liquid storage unit in the no-load starting stage of the energy release unit so that the liquid working medium can be evaporated and gasified, and therefore the exhaust temperature of the low-pressure turbine can be reduced, and the gaseous working medium formed through evaporation and gasification is input into the low-pressure turbine through the reheater to continue acting. Therefore, the risk of equipment damage caused by overhigh exhaust temperature during turbine operation is reduced, the exhaust heat of the turbine is recovered, the total air inflow of the turbine is reduced, and the overall efficiency of a system unit is improved.

The invention belongs to the technical field of general engineering elements, and particularly relates to a valve, in particular to a wastewater evaporator and a using method thereof. The waste water evaporator comprises a separation chamber, a heat exchanger, a vacuum pump and a condensate water tank, and the separation chamber and the heat exchanger are communicated through the vacuum pump; the condensate water tank is arranged on one side of the heat exchanger; a valve body is arranged on the water pipe; a valve element assembly is arranged in the containing cavity in a sliding mode and comprises a guide valve element and a main valve element, and the guide valve element is suitable for sliding relative to the main valve element. The adjusting spring is located between the guide valve element and the main valve element and used for adjusting the axial compression amount of the guide valve element and the main valve element; the sealing spring is arranged between the main valve element and the side wall of the containing cavity and used for providing main sealing force when the valve element assembly is closed; when the valve body is in an open state, the guide valve element moves in the direction of the sealing spring, and the guide valve element is suitable for guiding the sealing spring to be compressed directionally, so that radial deviation and jamming are avoided.

The invention provides a heat exchange system and a heat exchange method. The heat exchange system comprises a turbulent flow gas supply component. The evaporator comprises a shell, an evaporation pipe and a turbulent flow pipe, the evaporation pipe and the turbulent flow pipe are both arranged in the shell, the turbulent flow pipe is located below the evaporation pipe, a plurality of spraying holes are formed in the turbulent flow pipe, and the turbulent flow inlet end of the turbulent flow pipe communicates with the outlet end of the turbulent flow gas supply component so that turbulent flow gas can be conveyed into the turbulent flow pipe. Turbulent flow gas is jetted to the surface of the evaporation pipe through the jet holes so as to destroy a thermal boundary layer formed on the surface of the turbulent flow pipe; the inlet end of the compressor is communicated with the outlet end of the evaporator; the inlet end of the condenser is communicated with the outlet end of the compressor, and the outlet end of the condenser is communicated with the inlet end of the evaporator; the problem that in the prior art, when a flooded evaporator is under the working conditions of low load, low flow speed and the like, the heat exchange efficiency is remarkably reduced due to the fact that a heat boundary layer is formed on the surface of an evaporation pipe is solved.

The demister cleaning device comprises a first-effect evaporation module, a second-effect evaporation module, a third-effect evaporation module and a feeding pipe, the first-effect evaporation module, the second-effect evaporation module and the third-effect evaporation module are sequentially connected through the feeding pipe, and a third-effect demister in the third-effect evaporation module is connected to a condenser and a centrifugal water vapor compressor through a three-way pipe. The centrifugal water vapor compressor is connected into a first-effect heater in the first-effect evaporation module through a pipeline; a bypass valve is connected to the pipeline between the condenser and the first-effect heater and connected with the centrifugal water vapor compressor in parallel. A top inlet of the triple-effect demister is connected with a high-pressure water inlet pipe. Secondary steam generated by triple effect is recycled instead of directly entering the condenser to be condensed, the recycled secondary steam enters the centrifugal steam compressor to pressurize the triple effect secondary steam, and the triple effect secondary steam is supplied to the first-effect heater to be used for heating materials to replace original live steam, so that the purposes of saving energy and reducing consumption are achieved.

The air conditioner circulating fan comprises a machine head internally provided with a first air duct, and under driving of a first draught fan in the first air duct, external air enters the first air duct through a first air inlet and then flows out of a first air outlet; a refrigeration assembly, a water cooling assembly, a second air channel and the like are arranged in the machine base, under driving of a second draught fan in the second air channel, external air enters the second air channel after being cooled into cold air through a second air inlet and an evaporator of the refrigeration assembly, and then enters the first air channel through a second air outlet to be mixed with air in the first air channel to form cold air. And the air flows out from the first air outlet. According to the air conditioner, after being cooled by the refrigeration assembly arranged in the machine base, the external air entering the second air channel enters the first air channel and is mixed with the air in the first air channel to form cold air to be sent out, and cooling is achieved while air circulation convection is conducted; and the air volume of the cold air can be adjusted by changing the temperature and proportion of the cold air entering the first air duct, so that the adjustment of cooling is realized.

The system for supplying heat to a building comprises, in addition to an outside air heat exchanger (11), a fan device (12) for conveying outside air through the outside air heat exchanger (11), a latent heat storage unit (13) with a closed tank (18) and a heat pump (15), a piping system (16) filled with a liquid working medium and a pumping device (17) for conveying the working medium through the piping system. The piping system (16), the pumping device (17), the outdoor air heat exchanger (11), the heat pump (15) and the latent heat storage unit (13) form a closed circuit for the working medium and are arranged such that the working medium flows through the outdoor air heat exchanger (11), the latent heat storage unit (19) and an evaporator heat exchanger (21) of the heat pump (15) in the closed circuit in this sequence before being returned to the outdoor air heat exchanger (11).

An oil-free compressor includes a compressor housing with a suction inlet and a discharge outlet, a compression mechanism and a liquid-vapor separation volume disposed within the compressor housing, a crankshaft. The compression mechanism has an inlet fluidly connected to the suction inlet and a discharge volume fluidly connected to the discharge outlet. The crankshaft is engaged with the compression mechanism. The liquid-vapor separation volume is configured to separate a mixed phase of working fluid into liquid working fluid and gaseous working fluid. The liquid working fluid is supplied to the bearing. A heating, ventilation, air conditioning, and refrigeration (HVACR) system includes a refrigerant circuit with an oil-free compressor, a condenser, one or more expanders, and an evaporator.

The invention discloses an air cooling and cold air all-in-one machine performance testing device, which comprises an environment room and a testing control part, and is characterized in that a first air pipe is arranged in the environment room and is used for feeding air flow led from the interior of the environment room and / or a second air pipe into an evaporator air inlet of a tested machine after the temperature and humidity of the air flow are adjusted; the second air pipe is used for discharging airflow at an air outlet of an evaporator of the tested machine to at least one of the outside of the environment room, the inside of the environment room and the first air pipe, the third air pipe is used for discharging airflow at an air outlet of a condenser of the tested machine to at least one of the outside of the environment room and the inside of the environment room, and the test control part is used for controlling airflow at each position. The invention further discloses a working method of the air cooling and cold air cooling all-in-one machine performance testing device. The device is suitable for testing the performance of the air-cooling and cold-air-cooling all-in-one machine, the temperature between the environments is adjusted through the refrigerating capacity and the condensation heat generated in the testing process, and energy consumption is reduced.

A combined heat exchanger, a heat exchange system, and an optimization method thereof are provided. The heat exchange system includes: an enhanced vapor injection compressor, a condenser, an expansion valve and an evaporator, which are located in a main circuit; wherein the heat exchange system further includes a first branch branched from the main circuit to an vapor injection port of the compressor at a branch point P downstream of the condenser, and a first heat exchange unit and a second heat exchange unit are further provided in the main circuit between the branch point P and the expansion valve; and wherein a refrigerant leaving the condenser is divided at the branch point P into a first portion passing through the first heat exchange unit and the second heat exchange unit from the main circuit, and a second portion passing through the first branch to the vapor injection port.

The utility model relates to the technical field of solar evaporation, in particular to a solar interface evaporation device which comprises a liquid storage device, the liquid storage device comprises a liquid storage tank and a valve, the liquid storage tank is used for storing liquid containing water, and the valve is arranged on one side of the bottom of the liquid storage tank; the rotary driving mechanism comprises a rotary driving assembly, a first roller and a second roller, the rotary driving assembly is connected with the first roller or the second roller to drive the first roller or the second roller to rotate, the first roller is located in the liquid storage tank and is lower than the liquid level of the liquid, and the second roller is located in the liquid storage tank and is lower than the liquid level of the liquid. The second roller is located outside the liquid storage tank, or the second roller is located in the liquid storage tank and is higher than the liquid level; and the solar interface evaporator is a flexible thin film, the flexible thin film is connected end to end to form a ring, and the flexible thin film is at least tensioned between the first roller and the second roller.