52results about How to "Improve cooling capacity utilization" patented technology

The invention provides a method for air separation production on the liquid oxygen and the liquid nitrogen through the LNG (Liquefied Natural Gas) cold energy. According to the all-liquid air separation method, the investment is less, the energy-saving rate is high, the energy consumption is low, the cold loss is small, the output of the liquid nitrogen and the liquid oxygen is large, and the production cost can be greatly reduced. According to the technical scheme, the implementation steps of the method includes that the raw nitrogen from an air separation tower cold box is reheated through a main heat exchanger cold box to join the medium-pressure and low-temperature nitrogen separated through a gas and liquid separation tank to be reheated through a circulating heat exchanger cold box, the reheated low-pressure and low-temperature nitrogen is reheated through the circulating heat exchanger cold box, and the medium-pressure and normal-temperature nitrogen boosted through a nitrogen booster enters a circulating nitrogen booster to be boosted into the high-pressure nitrogen; the high-pressure nitrogen is precooled through the circulating heat exchanger cold box; the precooled high-pressure nitrogen is fed into the air separation tower cold box to serve as an air separation cold source, the high-purity and high-pressure liquid nitrogen is obtained at the bottom of an upper tower of an LNG cold energy recovery tower cold box, the high-pressure liquid nitrogen is throttled through a throttling valve to obtain the medium-pressure liquid nitrogen and the medium-pressure nitrogen, and the medium-pressure liquid nitrogen and the medium-pressure nitrogen are throttled through the throttling valve to obtain a low-pressure liquid nitrogen product and the low-pressure nitrogen.

The invention provides a constant temperature and humidity power transformation cabinet which comprises a cabinet body, a temperature regulation module, a humidity regulation module and a control module. The cabinet body is of a sealing structure formed by a first side wall, a second side wall, a third side wall, a door, a top plate and a bottom plate; the first side wall, the second side wall and the third side wall are respectively of a hollow structure; a first multi-way pipe is arranged in the top plate, and a second multi-way pipe is arranged in the bottom plate; cooling liquid is injected into a first side wall inner cavity, a second side wall inner cavity, a third side wall inner cavity, the first multi-way pipe and the second multi-way pipe; the temperature regulation module comprises a circulating pump, a refrigerating plant and a temperature sensor; the humidity regulation module comprises a first air pipe, a second air pipe, a first draught fan, a second draught fan and a first humidity sensor; the control module is respectively connected with the circulating pump, the refrigerating plant, the temperature sensor, the first draught fan, the second draught fan and the first humidity sensor. Thus, the problems that heat dissipation is difficult and damp is prone to accumulation of the power transformation cabinet are solved.

The invention relates to a nano water ion generating device, which comprises a semiconductor crystal grain pair consisting of a P-type semiconductor and an N-type semiconductor. One end of the semiconductor crystal grain pair is a refrigerating end, and the other end of the semiconductor crystal grain pair is a radiating end. The nano water ion generating device also comprises a water condensationdisc, a discharge electrode and a constant voltage electrode; the water condensation disc is electrically connected with the refrigerating end of the semiconductor crystal grain pair; one end of thedischarge electrode is a water absorption end, the water absorption end is close to the water condensation disc, and the other end of the discharge electrode is a discharge end; and the constant voltage electrode is arranged on the side part of the discharge electrode. The nano water ion generating device can be applied to the fields of air purification, sterilization, cosmetology and hairdressing, moisture preservation, fresh keeping and the like.

The invention provides an air-cooled refrigerator which comprises a refrigerator body, an accommodating chamber and a controller. The accommodating chamber is arranged inside the refrigerator body and is divided into a plurality of partition chambers by partition components, and a temperature sensor and an air door are arranged in each partition chamber; the controller is connected to the temperature sensor and the air door in each partition chamber and is used for controlling working states of the air door in the partition chamber according to detection signals from the temperature sensor in the partition chamber. According to the technical scheme, the air-cooled refrigerator has the advantages that original cooling schemes of the air-cooled refrigerator is changed, so that the air-cooled refrigerator can be quickly locally cooled, the cooling capacity utilization rate can be increased, refrigerating effects can be improved for refrigerated objects, and energy consumption can be reduced.

The invention relates to a fresh air handling unit with internal circulation and heat recovery. The fresh air handling unit comprises a shell, a first plate heat exchanger, a second plate heat exchanger, a compressor, a water-cooling condenser and an evaporator, the first plate heat exchanger and the second plate heat exchanger are arranged side by side, a first partitioning plate is arranged between the upper side of the right end of the first plate heat exchanger and the top wall of the shell, a second partitioning plate is arranged between the connecting position of the first plate heat exchanger and the second plate heat exchanger and the top wall of the shell, a third partitioning plate is arranged between the upper side of the left end of the second plate heat exchanger and the top wall of the shell, a fourth partitioning plate is arranged between the lower side of the left end of the second plate heat exchanger and the bottom wall of the shell, and a fifth partitioning plate is arranged between the lower side of the right end of the first plate heat exchanger and the right wall of the shell. A fresh air port and an air delivery port are formed in the top wall of the shell, an air-returning port and an air-discharging port are formed in the left side wall and right side wall of the shell, and the evaporator is arranged on the lower side of the second plate heat exchanger side by side. The fresh air handling unit has the advantages of being simple in structure and high in heat recovery rate and energy efficiency ratio, and can achieve intelligent control and low-energy-consumption operation.

The invention provides a subzero treatment device. The original fan design is replaced by adopting a liquid-gas ejector, the pressure of liquid nitrogen as a cooling medium is reduced, the speed is increased, partial vacuum is formed in the liquid-gas ejector, and fresh air is introduced so as to be uniformly mixed with the liquid nitrogen, so that partial gasification of the liquid nitrogen is realized, and a workpiece is preferably cooled after the air volume is increased; driving fluid in the ejector comes from low-temperature nitrogen in a box body of subzero equipment, and the cooling capacity of the driving fluid is recycled, so that the utilization rate of the cooling capacity can be further increased, and the problems of frosting and blockage are avoided.

The invention relates to a thermo-acoustic system driven by a liquefied natural gas cold energy. The thermo-acoustic system comprises a heat source (7), a liquefied natural gas cold energy (8), a hot end heat exchanger (1), a heat regenerator (2), a cold end heat exchanger (3) and a resonant cavity, wherein the hot end heat exchanger, the heat regenerator, the cold end heat exchanger and the resonant cavity are connected in sequence; the hot end heat exchanger (1) is connected with the heat source (7); the cold end heat exchanger (3) and a resonant tube (4) are arranged in the liquefied natural gas cold energy (8); the temperature difference of the hot end heat exchanger (1) and the cold end heat exchanger (3) is utilized, and a temperature gradient is built inside the heat regenerator (2), so that pressure fluctuation is generated in the resonant tube (4), and cold energy is converted into acoustic power. Compared with the prior art, the thermo-acoustic system driven by the liquefied natural gas cold energy has the advantages that the structure is simple; the acoustic power loss is low; the efficiency of the thermo-acoustic system is high, and the like.

The invention discloses spiral liquid nitrogen refrigeration equipment for aquatic products, and aims to provide liquid nitrogen refrigeration equipment, which has high space utilization rate, long cooling gas path and high utilization rate of cooling capacity, and is capable of improving the refrigerating efficiency and overall freezing quality. The equipment comprises a refrigerating chamber, a vertical spiral conveyor for conveying aquatic product and arranged in the refrigerating chamber, and a turnover device arranged on the vertical spiral conveyor and for flipping aquatic products. The vertical spiral conveyor includes a support column and a spiral conveyor chain in spiral arising along the support column; the support column is provided with a plurality of liquid nitrogen spray nozzles extending around the spiral conveyor chain, and the liquid nitrogen spray nozzles are arranged downwards above the spiral conveyor chain; and the turnover device is arranged on the middle part of the support column, the turnover device is positioned above the spiral conveyor chain, and the turnover device comprises a horizontal transfer rail and a turnover mechanism mounted on the support column.

The invention provides a constant temperature and humidity power transformation cabinet which comprises a cabinet body, a temperature regulation module, a humidity regulation module and a control module. The cabinet body is of a sealing structure formed by a first side wall, a second side wall, a third side wall, a door, a top plate and a bottom plate; the first side wall, the second side wall and the third side wall are respectively of a hollow structure; a first multi-way pipe is arranged in the top plate, and a second multi-way pipe is arranged in the bottom plate; cooling liquid is injected into a first side wall inner cavity, a second side wall inner cavity, a third side wall inner cavity, the first multi-way pipe and the second multi-way pipe; the temperature regulation module comprises a circulating pump, a refrigerating plant and a temperature sensor; the humidity regulation module comprises a first air pipe, a second air pipe, a first draught fan, a second draught fan and a first humidity sensor; the control module is respectively connected with the circulating pump, the refrigerating plant, the temperature sensor, the first draught fan, the second draught fan and the first humidity sensor. Thus, the problems that heat dissipation is difficult and damp is prone to accumulation of the power transformation cabinet are solved.

The invention discloses spiral liquid nitrogen refrigeration equipment for aquatic products, and aims to provide liquid nitrogen refrigeration equipment, which has high space utilization rate, long cooling gas path and high utilization rate of cooling capacity, and is capable of improving the refrigerating efficiency and overall freezing quality. The equipment comprises a refrigerating chamber, a vertical spiral conveyor for conveying aquatic product and arranged in the refrigerating chamber, and a turnover device arranged on the vertical spiral conveyor and for flipping aquatic products. The vertical spiral conveyor includes a support column and a spiral conveyor chain in spiral arising along the support column; the support column is provided with a plurality of liquid nitrogen spray nozzles extending around the spiral conveyor chain, and the liquid nitrogen spray nozzles are arranged downwards above the spiral conveyor chain; and the turnover device is arranged on the middle part of the support column, the turnover device is positioned above the spiral conveyor chain, and the turnover device comprises a horizontal transfer rail and a turnover mechanism mounted on the support column.

The invention discloses a refrigerating device and a method of a mining escape capsule, belonging to the field of safe rescue and environment control in a sealing space. The refrigerating device comprises a carbon dioxide steel bottle, a pipeline, a primary decompression throttling valve, a primary bypass valve, a primary thermometer, a primary capillary tube evaporator, a secondary decompression throttling valve, a secondary bypass valve, a secondary thermometer, a secondary capillary tube evaporator, an exhaust adjusting valve and a pneumatic air blower. According to the refrigerating method provided by the invention, conversion elements are connected and arranged on the primary capillary tube evaporator and the secondary capillary tube evaporator in series and in parallel, so that the use ratio of the refrigeration capacity of refrigerating fluid can be effectively increased, and the loss of the refrigeration capacity can be reduced; and furthermore, the primary thermometer and the secondary thermometer are arranged, so that the controllability of the device operation can be improved. The refrigerating device and the method provided by the invention have the advantages of safe and reliable properties, flexible and convenient adjustment, energy conversation, environmental protection, and high economical benefits and the like.

The invention provides a condensation water making device. The device comprises a semiconductor cooling sheet, radiators, a heat insulation box body and a water collector; the hot surface of the semiconductor cooling sheet is provided with the first radiator; the second radiator is installed on the cold surface of the semiconductor cooling sheet, and the second radiator is communicated with a condenser; the lower part of the condenser is provided with the water collector; the cold surface of the semiconductor cooling sheet, the second radiator and the condenser are arranged in the heat insulation box body, and the second radiator is a liquid cooling radiator; the liquid cooling radiator is communicated with the condenser through a pipeline, and the condenser and the air are subjected to heat exchange, so that water in air is condensed and separated out. After the semiconductor cooling sheet is electrified, the heating surface keeps the environment temperature basically so that the cooling surface is cooler than the ambient temperature, the condenser makes full contact with the air and is 10 DEG lower than the room temperature, and water vapor in the air is condensed into water drops on the condenser and is collected into the water collector. The device has the advantages of being simple in structure, high in water making efficiency, low in energy consumption, wide in application range, convenient to use and the like.

The invention discloses an intelligent temperature control adiabatic cooling channel for a communication machine room. A cooling channel is positioned underground below the communication machine room and comprises a heat-insulating channel of which the upper end is opened and a cooling distribution floor arranged on the heat-insulating channel in a covering manner; the heat-insulating channel is a channel which is defined by a left side plate, a right side plate and a base plate and is provided with a U-shaped cross section; the heat-insulating channel comprises three layers of an outer reinforcing fireproof layer, a middle heat insulating layer and an inner reinforcing fireproof layer; the cooling distribution floor consists of a plurality of floor units; the floor units comprise three kinds of temperature control floor units, ventilation floor units and heat-insulating floor units; an EC fan is arranged in each temperature control floor unit; the temperature control floor units are arranged below high-power-consumption equipment in the communication machine room; the ventilation floor units are arranged below low-power-consumption equipment in the communication machine room; the heat-insulating floor units are arranged underground below the parts where no equipment is arranged in the communication machine room. The intelligent temperature control adiabatic cooling channel disclosed by the invention has the advantages that the energy-saving effect is remarkable; by adopting a modular structure, flexible configuration can be realized according to the size of the communication machine room and power consumption and heat dissipation of communication equipment.

The invention provides a cold suction type water cold accumulation refrigerating device and belongs to the field of energy accumulation. The refrigerating device comprises a cold accumulation tank. One end of the first water outlet pipe is communicated to the bottom of the cold accumulation tank. The other end of the first water outlet pipe is communicated with a water pump which is connected with a water inlet pipe. The other end of the water inlet pipe is communicated with a refrigerating tank, and the port of the end is provided with a sprayer. A first flared tube, a second flared tube and an air pump are further disposed in the refrigerating tank. The air pump is connected with the first flared tube and the second flared tube. The flared end of the first flared tube is fixedly connected with a water stopping plate. An opening is formed in the lateral wall of the refrigerating tank. A temperature sensor is disposed on the refrigerating tank. The temperature sensor controls the air pump and the water pump. A circulating pipe is connected to one side of the refrigerating tank. The other end of the circulating pipe is communicated with the cold accumulation tank. A third flared tube is arranged on one side of the first flared tube. The other end of the third flared tube is communicated with the air pump. A second temperature sensor is disposed at the bottom wall of the refrigerating tank. An electromagnetic valve is disposed on the circulating pipe. The refrigerating device is high in refrigerating efficiency, high in cold amount utilization rate and optimized in structure.

The invention discloses a mining escape capsule refrigerating system and method, and belongs to the field of confined space safety rescue and environment control. The system comprises a carbon dioxide steel bottle, a pipeline, a primary bypass valve, a primary pressure reduction and throttling valve, a primary temperature meter, a primary capillary evaporator, a secondary communicated valve, a secondary pressure reduction and throttling valve, a secondary temperature meter, a secondary capillary evaporator, a gas exhaust regulating valve and a pneumatic fan. According to the invention, the primary capillary evaporator and the secondary capillary evaporator are adopted to be connected in series and in parallel to arrange and exchange elements, the refrigeration capacity utilization ratio of a refrigerant can be improved effectively, and the refrigeration capacity loss is reduced; and additionally, through the arrangement of the primary temperature meter and the secondary temperature meter, the controllability of system running and operation is improved; and the mining escape capsule refrigerating system provided by the invention has the advantages that performance is safe and stable, regulation is flexible and convenient, is energy-saving, environment-friendly and economic, and the like.

The invention provides a surrounding type refrigeration device in water cold storage and belongs to the field of energy storage. The surrounding type refrigeration device comprises a first cold storage tank, the bottom end of the first cold storage tank is communicated with a water discharge pipe, an electromagnetic valve is arranged on the water discharge pipe which is inclined, the other end of the water discharge pipe is communicated with a second cold storage tank, the lower end of the second cold storage tank is communicated with a water return pipe, the other end of the water return pipe is communicated with the first cold storage tank, a water pump is arranged on the water return pipe, a temperature sensor and a water level sensor are arranged on the inner wall of the cold storage tank, the temperature sensor controls the water pump, the water level sensor controls the electromagnetic valve, a spiral pipe is arranged on the outer wall of the second cold storage tank, one end of the spiral pipe is wound from the upper end of the second cold storage tank to the lower end of the second cold storage tank and then spirally wound from the lower end to the upper end of the second cold storage tank, one end of the spiral pipe is communicated with a heat pipe, the other end of the spiral pipe is communicated with a cold pipe, air pumps are arranged on both the cold pipe and the heat pipe, and cold water is sprayed to the temperature sensor when the electromagnetic valve is turned on. The refrigeration device is high in refrigeration efficiency and cold energy utilization rate.

An efficient multistage throttling LNG device comprises a natural gas inlet pipe, an LNG storage tank, a refrigerant compressor, refrigerant separation tanks and a cold cabinet. The efficient multistage throttling LNG device is characterized in that a main heat exchanger and an auxiliary heat exchanger are arranged in the cold cabinet, the natural gas inlet pipe sequentially passes through the main heat exchanger and the auxiliary heat exchanger and then is connected with a feed inlet of the LNG storage tank, a fourth throttling valve is arranged between the auxiliary heat exchanger and the LNG storage tank, and the number of the refrigerant separation tanks is five. Cooling capacity needed by supply is achieved in a segmented mode, entropy production of the liquidation process is minimized, and efficiency approximates step-type circulation. The problems that an existing LNG device is low in utilization rate of refrigeration cycle cooling capacity, high in entropy loss of a compressor, complex in structure and the like are solved fundamentally.

The invention relates to the field of air conditioners, and provides an air conditioning system and an exhaust control method thereof. The air conditioning system comprises an outdoor unit and a coldair pipe; the outdoor unit is provided with a heating device and a cooling fan; the air outlet side of the cooling fan faces the heating device; one end of the cold air pipe is used for communicatingwith indoor cold air; and the other end of the cold air pipe communicates with the air inlet side of the cooling fan. The cold air pipe communicates with the air inlet side of the cooling fan, so thatindoor cold air can be accurately guided to the cooling fan and the heating device, the cold energy of the indoor cold air is prevented from being consumed by other environmental devices, and the cold energy utilization rate of the indoor cold air is increased; moreover, when the cooling fan is in running, suction force can be formed for air in the cold air pipe; the cooling fan can be used for driving the indoor cold air to flow to the heating device at a relatively high speed, simplification of the structure of the air conditioning system can be facilitated, heat dissipation of the heatingdevice can be further accelerated through the indoor cold air flowing at a relatively high speed, and rapid heat dissipation of the heating device is further facilitated.

The invention provides an intelligent temperature-controlled distribution cabinet and an intelligent temperature-controlled distribution method. The intelligent temperature-controlled distribution cabinet includes a cabinet body and a plurality of storage units, and also includes a temperature adjustment device, the distribution cabinet is provided with an air duct, and the air outlet of the temperature adjustment device passes through the first damper and the air outlet. The air passage is connected, and a second air valve is provided between each storage unit and the air passage, and the controller of the distribution cabinet controls the opening and closing of the second air valve according to the temperature of each storage unit. The intelligent temperature-controlled distribution cabinet and the intelligent temperature-controlled distribution method provided by the present invention realize the independent temperature control of each storage unit, and each storage unit can reach the preset target temperature, thereby realizing different temperature control of different storage units The coverage of the range meets the precise control and preservation requirements of different types of goods.

The invention discloses a cold storage box and an application method thereof. The cold storage box comprises a box body and an adsorption part. A first cavity wall is arranged on the outer side of thebox body. A second cavity wall is oppositely arranged outside the first cavity wall. The space between the first cavity wall and the second cavity wall is an evaporation cavity. Water absorbing materials for adsorbing a refrigerant are arranged on the side, towards the evaporation cavity, of the first cavity wall. The adsorption part is provided with an adsorption cavity. The adsorption cavity communicates with the evaporation cavity through a heat exchange pipeline. A valve is arranged on the heat exchange pipeline. An adsorbent for adsorbing the refrigerant is arranged in the adsorption cavity. The water absorbing materials are arranged on the inner wall, close to the box body, in the evaporation cavity, when the refrigerant conducts evaporation and refrigeration from the water absorbing materials, the refrigerating amount transmitted into the box body through the refrigerant is maximal, the refrigerating amount utilization rate is increased, and the cold storage effect is improved.The cold storage box is reasonable in structure, convenient to use and capable of being widely applied to the technical field of cold chain transportation.

The invention relates to a water pan and a heat pump dryer comprising same. The water pan comprises an upper pan and a lower pan, and the upper pan is positioned above the lower pan; the upper pan isused for receiving condensed water separated out by the dryer, the rear end of the upper pan is provided with a water falling hole, and the bottom surface of the upper pan is inclined downwards towards the rear; the lower pan is used for receiving condensate water flowing out of the water falling hole, and the bottom surface of the lower pan is inclined downwards towards the front; a containing cavity capable of storing condensed water is formed in the lower pan, and a heat exchange tube is arranged in the containing cavity. According to the water pan and the heat pump dryer comprising the same, the latent cooling capacity of the condensed water can be fully utilized, so that the purpose of reducing the energy consumption of the dryer is achieved.

The invention relates to a semiconductor enhanced refrigeration device. The device comprises an aluminum alloy fin, a semiconductor refrigeration sheet and two aluminum alloy supports connected together. The interior of the aluminum alloy support is an arc surface, the exterior of the aluminum alloy support is three planes, and each plane is provided with a boss and two threaded holes. The bosses are attached to the inner surface of the semiconductor refrigeration sheet, and the outer surface of the semiconductor refrigeration sheet is attached to the aluminum alloy fin. The center line of the aluminum alloy fin is provided with two counter bores, and the counter bores correspond to the threaded holes. Heat preservation cotton is arranged between the aluminum alloy fin and the aluminum alloy supports. The device is convenient to install and maintain, good in durability, high in heat transfer efficiency, simple and reliable in connecting and fixing method, high in practicability and suitable for special environment working conditions of permafrost regions.

The invention provides a vertical cabinet type air conditioner indoor unit. The vertical cabinet type air conditioner indoor unit comprises a shell, multiple radiation and convection type heat exchangers and an air supply device. An air inlet is formed in the lower portion of the shell, an air supply opening is formed in the upper portion of the shell, and the front portion of the shell comprisesa radiant panel. The radiation convection type heat exchangers are provided with radiation heat exchange parts and convection heat exchange parts, and are mounted in the shell, the radiation heat exchange parts are in cylinder shapes with openings in two ends and extending in the vertical direction, the radiation heat exchange parts are configured to absorb heat or cold from the inner wall faces thereof, and transmit the heat or cold to the radiant panel from the outer wall faces thereof, the convection heat exchange parts are arranged on the inner sides of the radiation heat exchange parts, are configured to generate heat or cold, transmit the heat or cold to air flowing through the inner sides of the radiation heat exchange parts and transmit the heat or cold to the inner wall faces of the radiation heat exchange parts, the radiation heat exchange parts are sequentially and coaxially mounted in the vertical direction, the air supply device is mounted in the shell, and is configured to at least prompt the air flow to enter the inner sides of the radiation heat exchange parts from the air inlet, and after heat exchange with the convection heat exchange parts, the air flow flows outof the air supply opening.

The invention discloses a precision temperature control type reservoir and method for a mechanical pump to drive a two-phase fluid loop. The reservoir comprises a reservoir shell, a heating device, afluid collector and a passive cooling capillary drain pipe. The fluid collector is located on the inner surface of the reservoir shell. The heating device is located on the outer side of the reservoirshell. The passive cooling capillary drain pipe structure penetrates through the reservoir shell and communicates with an external fluid loop system. When the fluid to be cooled passes through the reservoir, the fluid is sent, by the fluid collector, to the passive cooling capillary drain pipe to be cooled. According to the precision temperature control type reservoir and method for the mechanical pump to drive the two-phase fluid loop, the interior of the reservoir is cooled by adopting the heat exchange manner, the temperature control function is realized only by regulating the heating power consumption, and therefore the structure of the reservoir is remarkably simplified; meanwhile, the drain pipe can partially keep the relative cool state all the time, it is effectively avoided thatbubbles exist near the drain pipe, and it is guaranteed that the reservoir drains out the fluid phase working medium; and because the sheet metal structure is adopted for the fluid collector and a flow guiding device of the reservoir, the structural mechanical property can be obviously improved.

An efficient multistage throttling LNG device comprises a natural gas inlet pipe, an LNG storage tank, a refrigerant compressor, refrigerant separation tanks and a cold cabinet. The efficient multistage throttling LNG device is characterized in that a main heat exchanger and an auxiliary heat exchanger are arranged in the cold cabinet, the natural gas inlet pipe sequentially passes through the main heat exchanger and the auxiliary heat exchanger and then is connected with a feed inlet of the LNG storage tank, a fourth throttling valve is arranged between the auxiliary heat exchanger and the LNG storage tank, and the number of the refrigerant separation tanks is five. Cooling capacity needed by supply is achieved in a segmented mode, entropy production of the liquidation process is minimized, and efficiency approximates step-type circulation. The problems that an existing LNG device is low in utilization rate of refrigeration cycle cooling capacity, high in entropy loss of a compressor, complex in structure and the like are solved fundamentally.

The invention discloses a refrigeration cooling system under a mine. The refrigeration cooling system comprises a main roadway under the mine or a refrigerating unit of a main roadway equipment cavern, and the refrigerating unit is communicated with a first mine heat exchanging device and a second mine heat exchanging device; the refrigerating unit is a refrigeration circulating system formed by connection of a condenser, an evaporator and a compressor, and the condenser is connected with the second mine heat exchanging unit through a cooling water pump to form a closed cooling-water circulating system; the evaporator is connected with the first mine heat exchanging unit through a refrigerated water pump to form a closed refrigerated-water circulating system. The refrigeration cooling system is simple in structure, low in loss of refrigeration capacity, high in heat exchanging rate and low in operation cost. Being the novel refrigeration cooling system, the refrigeration cooling system can be widely applied to a mine cooling system.

The invention discloses a passive cooling capillary drainage pipe and method for a two-phase fluid loop liquid storer. The passive cooling capillary drainage pipe penetrates through a liquid storer shell, and communicates with an external fluid loop system; and when liquid to be cooled passes through the liquid storer, the passive cooling capillary drainage pipe is used for cooling. A heat exchange mode is adopted to cool the internal of the liquid storer; a temperature control function is achieved only through adjustment of the heating power consumption, so that the structure of the liquid storer is prominently simplified; and meanwhile, the drainage pipe can be locally located in a colder state always, so that bubbles near the drainage pipe are effectively prevented, and emissions of theliquid storer are guaranteed as liquid-phase working mediums.

The invention provides a heat exchange structure of a gas dryer. The heat exchange structure of the gas dryer comprises a first tube arranged vertically and a second tube arranged outside the first tube in a sleeving mode. An inner cavity of the first tube is internally provided with one or more third tubes, and the top and the bottom of the first tube and the top and the bottom of the second tubeare sealed, and the upper part of the inner cavity of the first tube is sealed to form a first inner cavity which is located at the upper portion and a second inner cavity which is located at the lower portion. A gas outlet and a gas inlet are arranged above and below the sealed portion respectively. One ends of the third tubes communicate with the first inner cavity, and the other ends of the third tubes communicate with the lower part of the second inner cavity. A third inner cavity is formed between the outer wall of the first tube and the inner wall of the second tube. The third inner cavity is provided with a refrigerant inlet allowing a refrigerant to be fed and a refrigerant outlet allowing the refrigerant to be discharged, and the bottom of the second inner cavity communicates with a liquid outlet. The heat exchange structure of the gas dryer has the advantages of having a compact structure, reducing of ice blocking phenomena, being simple in process, being low in cost, havinga good heat exchange effect, having a high cooling energy utilization rate and a good gas-liquid separation effect.

The embodiment of the invention provides a data center refrigeration air-conditioning system which comprises a reclaimed water reservoir, a water chilling unit, a plate heat exchanger and an air-conditioning terminal, and the water chilling unit at least comprises a condenser and an evaporator; wherein a first water pump is arranged at the downstream of the reclaimed water reservoir, and an outlet of the first water pump is connected with an inlet of the condenser and a first inlet of the plate heat exchanger through a first pipeline and a second pipeline respectively; an outlet of the condenser is connected with an inlet of the reclaimed water reservoir through a third pipeline; a first outlet of the plate heat exchanger is connected with the inlet of the condenser through a fourth pipeline; and the data center refrigeration air-conditioning system further comprises control equipment which is used for controlling all the pipelines and the water chilling unit to be turned on or turned off according to the water temperature in the reclaimed water reservoir. According to the embodiment of the invention, automatic switching of three operation modes of electric refrigeration in summer, partial natural refrigeration in transition seasons and complete natural refrigeration in winter is realized.