161 results about "Gas cooler" patented technology

A motor vehicle (10) with an electric and / or internal combustion engine drive is described, wherein the motor vehicle (10) comprises: a refrigeration system (12) with a refrigerant circuit (14); a storage compartment (18) arranged in a front area (VB) of the motor vehicle (10), in particular on a passenger side; wherein the refrigerant circuit (14) comprises a refrigerant compressor (22), a first heat exchanger (24), in particular a gas cooler or condenser, and a second heat exchanger (26), in particular an evaporator, wherein the second heat exchanger (26) and the refrigerant compressor (22) are connected to each other by a first low-pressure-side refrigerant line section (28-1).It is provided that a second low-pressure-side refrigerant line section (28-2) is arranged between the second heat exchanger (26) and the refrigerant compressor (22), which is arranged parallel to the first refrigerant line section (28-1) in terms of flow technology, wherein the second refrigerant line section (28-2) is designed such that it is arranged at least partially along at least one boundary wall (18b) of the storage compartment (18) in such a way that heat can be extracted from a storage compartment interior (18i).

The invention discloses a coal-fired unit energy storage coupling carbon capture system and method based on calcium circulation, and aims to realize efficient and cheap capture of CO2 in flue gas while performing energy storage peak regulation of a coal-fired unit. The system comprises main equipment such as a calcination / heat absorption reactor, a pressurized carbonation / heat release reactor, a CaCO3 storage tank, a CaO storage tank and a CO2 storage tank, and auxiliary equipment such as a gas booster compressor, residual pressure power generation equipment, an electric heating module, a dust remover, a gas cooler, a solar gas heater and a smoke-CO2 heat exchanger. According to the method, electric energy of green electricity or valley electricity and heat energy of high-temperature flue gas of a boiler are converted into chemical energy by adopting the cyclic calcination characteristic of CaCO3-based particles and stored in the CaCO3-based particles, and the chemical energy is released again in the form of heat energy when a unit supplies heat to the outside or a power grid uses electricity at the peak. The system has high operation flexibility and economical efficiency.

A refrigeration system includes one or more compressors (14,24), a gas cooler (105), a flash tank (106), one or more evaporators (12,22), a heat reclaim system (110), valves (120,122,124,126), and a control system (105). The heat reclaim system receives a working fluid from the one or more compressors and the gas cooler. The heat reclaim system is fluidly coupled, through a first supply line (111), to the one or mor compressors, and fluidly coupled, through a second supply line (113), to the gas cooler. The valves regulate a flow of the working fluid from the one or more compressors and the gas cooler to the heat reclaim system. The control system receiving at least one feedback signal from the heat reclaim system and, in response to the at least one feedback signal, operates the valves to regulate an amount of the working fluid circulated into the heat reclaim system from the one or more compressors and the gas cooler.

The utility model discloses a compressor performance test system, which is characterized in that an air inlet of an exhaust pipeline stop valve is connected with a refrigerant outlet of a tested compressor, and an air outlet is connected with an inlet of a gas flow meter; an outlet of the gas flowmeter is connected with a gas inlet of the exhaust pressure regulating valve The exhaust pressure regulating valve air outlet is connected with the suction pressure regulating valve air inlet and the condenser first air inlet; the condenser is provided with an internal circulation electric heating assembly, a first air outlet is connected with an air inlet of the air suction pressure regulating valve, and a first liquid outlet is connected with a liquid inlet in the side wall of the lower portion of the liquid storage device. The liquid storage device is connected with the condenser in parallel, a first gas outlet is connected with a first gas inlet of the condenser, a second gas outlet is connected with a gas inlet of the gas cooler through the suction temperature regulating valve, and the liquid level is the same as that of the condenser; the suction pressure regulating valve gas outlet is connected with the gas cooler gas inlet; a gas outlet of the gas cooler is connected with a refrigerant inlet of the tested compressor through a compressor suction pipeline stop valve.

The utility model provides a gas cooler and cooling equipment capable of improving thermal shock durability, which comprises a shell, a gas cooler, a cooling liquid cooler, a gas cooler and a cooling liquid cooler, and is characterized in that the shell is provided with a gas communication port and a cooling liquid communication port; the flat pipes are arranged at intervals in the thickness direction of the shell, the space, located outside the flat pipes and located in the shell, of each flat pipe is a cooling liquid flowing channel, the interior of each flat pipe is a gas transmission channel, and the cooling liquid flowing channels are isolated from the gas transmission channels; the fins are arranged in the flat pipes, and the ends, facing the input end of the gas to be cooled, of the fins are completely covered by the cooling liquid flowing channels in the thickness direction of the shell. The heat of the to-be-cooled gas is diffused into the cooling liquid flowing channel through the gas transmission channel, the gas cooling operation process is formed, the ends, facing the input end of the to-be-cooled gas, of the fins can be completely covered by the action range of the cooling liquid, and therefore the cooling efficiency is improved. The cooling device has the advantages of being long in service life, stable in cooling effect, high in use safety degree, capable of avoiding frequent maintenance and overhaul and the like.

The application discloses an absorbent tower external regeneration and oxygen removal method and system, and the method comprises the following steps: 1) the lean liquid from the bottom of the regeneration tower enters a negative pressure buffer tank, the top of the negative pressure buffer tank is connected with a steam compressor, the lean liquid extracted by the steam compressor enters a lean-liquid rich-liquid heat exchanger through a lean-liquid pump; 2) water vapor containing a small amount of CO2 enters the steam compressor, enters a regeneration oxygen remover after being adjusted by an adjusting valve I; 3) the rich liquid enters the top of the regeneration oxygen remover from top to bottom after being discharged from the lean-liquid rich-liquid heat exchanger, and steam enters the regeneration oxygen remover from bottom to top; 4) the rich liquid enters the regeneration tower from the top after being regenerated and stripped by heating; 5) the regeneration gas I after completing the heating regeneration and stripping of the rich liquid and the regeneration gas II discharged from the top of the regeneration tower enter a gas-liquid separator after passing through a gas cooler, the separated condensed water returns to the regeneration tower from the top, and the separated gas enters a membrane separation device after being compressed by a CO2 compressor. The method reduces the energy consumption of the system and realizes the cooperation of oxygen removal and energy saving.

The application discloses a transcritical CO2 ultra-high temperature heat pump system and a temperature control method, wherein supercritical CO2 is a high-temperature and high-pressure fluid at the outlet of a gas cooler, throttles to an evaporation pressure, and a large amount of throttling loss exists, which leads to the decrease of the heating energy efficiency ratio of the transcritical CO2 heat pump system, and is not conducive to the best energy-saving benefit of the ultra-high temperature heat pump. In view of the above problems, the application innovatively couples gas-electric dual-drive technology, two-stage compression intermediate cooling technology and mechanical supercooling technology, which can effectively reduce the high-pressure fluid temperature before the throttling valve of the CO2 working medium, reduce the throttling loss, drive the supercritical compressor through the adjustable turbine expander, reduce the power consumption of the compressor, improve the heating energy efficiency of the CO2 heat pump system, and flexibly and efficiently and stably supply steam in a wide range of variable working condition adjustment, improve the full working condition operation efficiency, achieve the purposes of energy saving and emission reduction and production cost reduction, and further widen the application range and application prospect of the high-temperature heat pump system.

Supercritical refrigerant circuit with compressor-ejector combination for vehicle air conditioning, comprising a section for a total refrigerant flow, a section for a suction jet refrigerant partial flow, and a section for a motive jet refrigerant partial flow, wherein in the section for the suction jet refrigerant partial flow an air conditioning evaporator (8) with associated expansion element (9) for providing cooling in an air conditioning system (32), a compressor (1), a gas cooler (2), an expansion element (5), and a suction jet heat exchanger (6), and in the section for the motive jet refrigerant partial flow a motive jet heat exchanger (33), wherein an ejector (7) is provided in which the suction jet refrigerant partial flow and the motive jet refrigerant partial flow of the refrigerant circuit are combined.wherein an ambient heat exchanger (10) and, in parallel, an air conditioning gas cooler (12) for providing heat in the air conditioning system (32) and, subsequently, a subcooler (11) are arranged in the total refrigerant flow, after which the total refrigerant flow is divided into the suction jet refrigerant partial flow and the motive jet refrigerant partial flow.

The invention relates to a fast heating fuel cell system and a control method, in the fuel cell system, air is divided into three paths after being pressurized by a fan, one path of air enters a stack cathode after absorbing heat from a combustor through an air preheater, and the other path of air directly enters a stack for adjusting the inlet temperature of the stack cathode; the other path absorbs secondary waste heat of the anode tail gas through an air cooler, and enters a stack cathode after being secondarily preheated by an air preheater; the cathode tail gas is heated by a combustor, then subjected to primary heat release by an air preheater and subjected to secondary heat release by CPOx; fuel is fed into CPOx through a circulating pump to be mixed with gas from an air preheater for a catalytic oxidation reaction, and after the reaction, primary waste heat of anode tail gas is absorbed through an anode tail gas cooler, and then the fuel enters an electric pile fuel side; anode tail gas is divided into two paths after primary heat release through the anode tail gas cooler, one path enters the combustor to be heated, and the other path returns to the circulating pump after secondary heat release through the air cooler.

The invention provides a cascade heat pump and an adjusting method, and relates to the technical field of heat pumps. The cascade heat pump comprises a first-stage heat pump circulation system, a second-stage heat pump circulation system and a tail end pipeline, the first-stage heat pump circulation system comprises a first compressor, a hot side channel of a gas cooler, a hot side channel of a cascade heat exchanger, a first expansion valve and an evaporator which are sequentially connected to form a first refrigerant circulation; the second-stage heat pump circulation system comprises a second compressor, a condenser, a second expansion valve and a cold side channel of the cascade heat exchanger which are sequentially connected to form a second refrigerant circulation; the tail end pipeline is sequentially communicated with a cold side channel of the gas cooler and a cold side channel of the condenser in the conveying direction. According to the cascade type heat pump, due to the flow direction arrangement of the gas cooler and the tail end pipeline, the effective energy of the hot side channel and the cold side channel in the condenser in the heat exchange process can be effectively improved, the heating load of the condenser is effectively reduced, and therefore the overall performance coefficient of the cascade type heat pump is improved.

A refrigeration system (10), in particular with a heat pump function, for a motor vehicle (200) with an internal combustion engine or at least partially electric drive is described. The refrigeration system (10) comprises a refrigerant circuit (11) with a refrigerant compressor (12); a first heat exchanger (18), in particular a gas cooler or condenser; a second heat exchanger (22), in particular an evaporator; and an internal heat exchanger (20). A first sensor device (pT7) for detecting a refrigerant pressure and / or a refrigerant temperature is arranged in the refrigerant circuit (11) on the high-pressure side downstream of the internal heat exchanger (20) and upstream of the second heat exchanger (22). Furthermore, a method for operating such a refrigeration system is described.

The utility model provides a recycling system for emptying gas in a pulverized coal preparation process. The recycling system comprises a gas washer, a gas cooler, a gas-liquid separation tank, a gas compressor and a gas pressure reducing valve, a gas inlet of the gas scrubber is used for being connected with an emptying gas outlet of a pulverized coal preparation unit, a liquid inlet of the gas scrubber is connected into a scrubbing water pipeline, a gas outlet of the gas scrubber is communicated with a gas inlet of the gas cooler, and a gas outlet of the gas cooler is communicated with an inlet of the gas-liquid separation tank. A gas outlet of the gas-liquid separation tank is communicated with an inlet of the gas compressor, an outlet of the gas compressor is communicated with one end of the gas pressure reducing valve, and the other end of the gas pressure reducing valve is connected with a sealing fan inlet of the pulverized coal preparation unit. According to the utility model, not only is the resource utilization efficiency improved, but also the influence on the environment is reduced.

A testing device for R744 supercritical and subcritical valves, relating to the technical field of refrigeration system valve testing, comprising a parallel compression assembly, a testing assembly and an auxiliary assembly, wherein the testing assembly is connected in series to the parallel compression assembly at both ends, and the auxiliary assembly is connected in series to the testing assembly; the testing assembly comprises a condenser (6) and a second gas cooler (7); a refrigerant outlet of an oil separator (4) is connected to both the condenser (6) and the second gas cooler (7) via a three-way joint, a refrigerant outlet of the condenser (6) is connected to a liquid storage tank (11), and a refrigerant outlet of the liquid storage tank (11) is connected to an inlet of the second gas cooler (7) via refrigerant piping; the second gas cooler (7) is sequentially connected to an oil heater (8), a valve under test (12) and a second evaporator (9) via refrigerant piping. The testing device enables automatic switching of the inlet and outlet flow directions of the valve under test (12) while eliminating the need to remove the valve under test (12), thereby facilitating frequent switching between forward and reverse directions during durability testing, and also allowing for performance testing of the valve under test (12) without the need to remove said valve.

The utility model discloses a heat pump system and relates to the technical field of heat pumps. The heat pump system comprises an evaporator, a first compressor, a gas cooler, an intercooler, a second compressor, a condenser and a heating pipeline. The heating pipeline is sequentially connected with the gas cooler and the condenser, the heating pipeline is used for allowing target water to flow, the first compressor is used for compressing a first refrigerant from a low-pressure gas state to an intermediate-pressure gas state, and the gas cooler is used for conducting heat exchange on the first refrigerant in the intermediate-pressure gas state and the target water so as to preliminarily heat the target water; the second compressor is used for compressing the second refrigerant from the middle pressure gas state to the high pressure gas state, and the condenser is used for conducting heat release and condensation on the high pressure gas state second refrigerant into the high pressure liquid state second refrigerant so as to heat the target water again. The heat pump system provided by the utility model can realize the effective utilization of energy, improve the energy efficiency ratio, save energy, protect the environment, improve the heating efficiency, ensure the heating effect, prevent the compressor from being overloaded and improve the safety.

The utility model discloses a composite tube plate integral serial sheet type protective gas cooler, which relates to the field of protective gas cooling and comprises an outer shell, heat exchange tubes and fins. The outer shell comprises a U-shaped protective plate, side plates and a first tube plate, the pair of side plates are fixedly installed on the U-shaped protective plate, the heat exchange tubes are U-shaped heat exchange tubes and are integrally bent, the U-shaped heat exchange tubes are installed in the outer shell, integral fins are connected to the U-shaped heat exchange tubes in an expanded mode, and the first tube plate and the second tube plate are fixedly installed on the outer shell. The first tube plate is fixedly installed on the pair of side plates on the opposite side of the U-shaped protection plate to form an outer shell, the second tube plate is fixedly installed on the other side of the first tube plate through a connecting protection piece, and the water chamber is fixedly installed on the second tube plate. And a heat exchange tube is blocked, a welded junction is heated at high temperature, and water leaks into the furnace once the welded junction cracks, so that the dew point of shielding gas is increased.

The invention discloses a warm core temperature estimation method and device, computer equipment and a computer program product, and the warm core temperature estimation method comprises the following steps: according to a warm core temperature estimation coefficient theta h, an enthalpy value h2 of CO2 at an outlet side of a compressor, an enthalpy value h3 of CO2 at an outlet side of a gas cooler, and an equivalent enthalpy value hg of CO2 in a transcritical zone representing the warm core temperature, calculating a warm core temperature estimation coefficient theta h; determining the equivalent enthalpy value hg, est of the transcritical zone CO2 representing the warm core temperature according to the reference value hmin of the est; and according to the equivalent enthalpy value hg, est and the pressure Pg, hi of the CO2 in the transcritical zone, the estimated temperature Tg, est of the warm core is determined. According to the warm core temperature estimation method, the warm core temperature is mapped through the equivalent enthalpy value of the CO2 in the transcritical zone based on the sensible-heat-like heat exchange characteristic of the CO2 heat pump system on the high-pressure side, and the accuracy of warm core temperature estimation can be improved.

The utility model provides a high-temperature ammonia-nitrogen wastewater treatment device. The high-temperature ammonia-nitrogen wastewater treatment device comprises a pipeline mixer, a negative pressure deamination tower, a condenser, a gas-liquid separation tank, a gas cooler, a pH regulating tank, a liquid cooler, a filter, a gaseous membrane material liquid deamination unit, an acid liquor circulating tank, a vacuum pump, a gaseous membrane material gas deamination unit, an ammonium sulfate circulating tank and an ammonium sulfate concentrated liquor tank which are sequentially connected in series. The high-temperature ammonia-nitrogen wastewater enters a negative-pressure deamination tower for deamination after being subjected to alkali adjustment through a pipeline mixer, and stronger ammonia water is obtained for reuse; ammonia-containing feed liquid at the tower bottom and ammonia-containing tail gas at the tower top respectively enter a gaseous membrane feed liquid deamination unit and a gaseous membrane feed gas deamination unit for deamination; a byproduct ammonium sulfate solution of the gaseous membrane material liquid deamination unit is used as absorption liquid of the gaseous membrane material gas deamination unit, and an ammonium sulfate concentrated solution is obtained and reused. The waste heat of the high-temperature ammonia-nitrogen wastewater is fully utilized, ammonia nitrogen in the high-temperature ammonia-nitrogen wastewater can be removed to reach the standard, ammonia resources are recycled in the form of concentrated ammonia water and concentrated ammonium sulfate, and the process is energy-saving, efficient and free of secondary pollution.

A gas cooler includes a drain recovery part, a drain discharge flow path, a drain tank, and a ventilation flow path. In the drain recovery part, drain separated from gas is accumulated by cooling the gas in a cooling part. The drain tank includes a separation part in which the drain and the gas are separated, and a storage part in which the separated drain is stored. The drain discharge flow path has one end communicating with the drain recovery part and the other end communicating with the separation part. The ventilation flow path has one end communicating with the separation part, and the other end communicating with a gas flow path that leads to a downstream space above the drain recovery part and to a gas lead-out port.

The invention discloses a regeneration system and process of a carbon capture absorbent. The system comprises a lean and rich liquid heat exchanger, a desorber, a reboiler, a desorbed gas compressor unit, at least one steam CO2 separation unit, a desorbed gas cooler, a gas-liquid separator and an absorbent cooler. According to the regeneration system and process of the carbon capture absorbent, the problem of high energy consumption of a desorption unit in a CO2 capture process by a chemical absorption method is solved.

The utility model provides a cement kiln collaborative special material treatment device which comprises a decomposing furnace, a rotary kiln, a storage pool, a clinker outlet, a material treatment device, a feeding pipeline, a first air blower, a gas cooler, a cyclone separator, a dust treatment device, a dust collector, an induced draft fan, an odor treatment system, a dilution cooler and a second air blower. The rotary kiln is cast and connected to the lower part of the decomposing furnace through bolts and is communicated with the decomposing furnace; the right side of the rotary kiln is built on the left upper side of the interior of the storage pool; the clinker outlet is formed in the right lower side of the front part of the storage pool. By utilizing the advantage of high-temperature calcination of the cement kiln, hazardous wastes such as strong acid, strong alkali and strong oxidizing property are incinerated at high temperature, so that the generated waste gas is cleanly discharged after being treated by a denitrification system, a desulfurization system and the like, and the generated residues are solidified into clinker through mineralization reaction of materials, so that the generation of secondary pollutants can be avoided; and clean, reduced and harmless treatment is realized.

To provide a control method of a refrigerating device and the refrigerating device capable of preventing a high stage compressor from being stopped as much as possible when a refrigerating load is reduced.SOLUTION: In a method of controlling a refrigeration device according to at least one embodiment of the present invention, the refrigeration device includes a low-stage compression unit configured to compress a CO2 refrigerant, a high-stage compression unit configured to compress the CO2 refrigerant compressed by the low-stage compression unit, and a gas cooler configured to cool the CO2 refrigerant compressed by the high-stage compression unit. A control method of a refrigeration device according to at least one embodiment of the present invention includes a step of reducing a heat-exchange amount of CO2 refrigerant in a gas cooler when a refrigeration load of the refrigeration device is reduced.SELECTED DRAWING: Figure 1A

The application discloses a low-temperature methanol washing system and method for treating unconverted gas, wherein the low-temperature methanol washing system comprises a first lean methanol pipe, a circulating gas pipe, a raw material gas cooler, a raw material gas separation tank, a washing tower, a medium-pressure flash tower, an H2S concentration tower, a semi-lean liquid stripping tower, a normal-temperature stripping tower, a hot regeneration tower, a lean methanol tank, a third lean methanol pipe, a CO2 flash tank, a methanol / water separation tower, a first tail gas pipe, a second tail gas pipe and a tail gas water washing tower. The process flow for separately treating unconverted gas is reasonable in design, meets the purification indexes and environmental protection requirements, and fills the blank of the low-temperature methanol washing for separately treating unconverted gas.

The invention relates to the technical field of coal chemical industry production, in particular to a system for preparing high-pressure CO2 gas through low-temperature methanol washing, which comprises a shift gas washing tower, a liquid CO2 evaporation heat exchanger, a desulfurization shift gas separation tank, a medium-pressure flash tank and a shift gas cooler, and the exhaust end of the shift gas washing tower is connected with the gas inlet end of the liquid CO2 evaporation heat exchanger after being subjected to heat exchange and cooling by the heat exchange system. A part of shift gas after H2S, COS, part of CO2 and other components are removed through a shift gas washing tower A section is led out, the temperature is further reduced through a heat exchanger, then the principle of liquefaction, reduced pressure flash evaporation and vaporization is fully utilized, a small amount of H2 and CO gas dissolved in liquid CO2 is recycled and vaporized, high-pressure CO2 product gas is prepared and obtained, the high-pressure CO2 product gas is sent to a rear workshop section to be subjected to centrifugal CO2 compression for use, and the high-pressure CO2 product gas is recycled. The centrifugal C02 compressor is changed into three-stage compression from original four-stage compression, so that the manufacturing cost of the centrifugal C02 compressor is saved, the operation power consumption is reduced, and the energy-saving and consumption-reducing effects are obvious.

To provide a control method of a refrigerating device and the refrigerating device capable of preventing a low-stage compressor from being stopped as much as possible when a refrigerating load is reduced.SOLUTION: The refrigeration apparatus includes a liquid-refrigerant supplying channel for supplying a liquid-phase CO2 refrigerant in the CO2 refrigerant after being compressed by the high-stage compressors and cooled by the gas coolers to the evaporators, a gas-refrigerant channel for guiding a gas-phase CO2 refrigerant from the evaporators to inlets of the low-stage compressors, heat exchangers for heating the liquid-phase CO2 refrigerant with heat taken from the gas-phase CO2 refrigerant by the gas coolers, first channels connecting the liquid-refrigerant supplying channel and inlets of the heat exchangers, second channels connecting outlets of the heat exchangers and the gas-refrigerant channel, and expansion valves provided in the first channels. When the refrigeration load of the refrigeration device decreases, the expansion valve is opened, and the CO2 refrigerant heated by the heat exchangers is guided to the gas refrigerant flow path via the second flow path.SELECTED DRAWING: Figure 1A

A compressed air refrigeration dryer for dehumidifying compressed air by means of a refrigerant circuit with carbon dioxide as the refrigerant, comprising at least one compressor (1), a gas cooler (3), at least one evaporator (2) configured to dehumidify compressed air passed on its secondary side at its cold surface, a refrigerant receiver (5.1, 11), an expansion valve (6) or an ejector, and a heat exchanger (8, 18) for heating the dried compressed air, which is connected downstream of the evaporator (2) at its air-side outlet, characterized in that the compressed air refrigeration dryer further comprises a control unit, at least one frequency converter connected upstream of each electrical power input of the at least one compressor (1), and a temperature sensor at a cooling water inlet of the gas cooler (3) for detecting a cooling water temperature.a temperature sensor for detecting a compressed air temperature at a compressed air inlet provided for introducing compressed air to be dehumidified into the compressed air refrigeration dryer, at least one pressure dew point sensor for detecting air humidity and a volume flow sensor for detecting a compressed air volume flow at the compressed air inlet, and at least one pressure sensor for detecting the refrigerant pressure at the compressor inlets, wherein the control unit is connected to the at least one compressor (1), the at least one frequency converter, the temperature sensors, the at least one pressure dew point sensor, the volume flow sensor and the at least one pressure sensor and is configured in such a way as tothat it can continuously read and store measured values ​​acquired by the sensors and that it can regulate the cooling capacity generated by the refrigerant circuit by controlling the at least one compressor (1) and / or the at least one frequency converter in such a way that dehumidified compressed air flowing out of the compressed air outlet of the refrigerated dryer constantly has a predetermined pressure dew point during operation of the compressed air refrigerated dryer.

The application discloses a kind of ejector synergistic transcritical carbon dioxide refrigeration system and working method, the system includes low pressure stage compressor, high pressure stage compressor, gas cooler, ejector, two expansion valves, two T-tubes, high temperature stage evaporator, low temperature stage evaporator and two regenerators;Cleverly use the shortcoming of T-tube gas-liquid separation effect is not good in the system of the application and convert it into an advantage;Use the saturated or two-phase refrigerant at the outlet of low temperature stage evaporator and the liquid-rich refrigerant from two T-tubes to carry out cascade heat recovery, respectively condense the liquid-rich refrigerant into supercooled liquid refrigerant, which is beneficial to reduce the dryness of the refrigerant before entering the high temperature stage evaporator and low temperature stage evaporator, and improve the refrigeration performance of the system;At the same time, cascade heat recovery can reduce the irreversible loss of heat transfer process and improve the heat transfer efficiency.In addition, the outlet of high temperature stage evaporator is gas-liquid two-phase refrigerant, which is beneficial to improve the heat transfer efficiency of the refrigerant in high temperature stage evaporator.

The invention discloses a control method and system for the cooling liquid flow of a transcritical carbon dioxide thermal management system, and belongs to the technical field of new energy automobiles, and the method comprises the steps that parameters of the transcritical carbon dioxide thermal management system are obtained; constructing a multi-factor experiment design matrix; the optimal cooling liquid flow is measured under the test or simulation condition; constructing an optimal cooling liquid flow prediction model; based on the performance parameters of the gas cooler, the optimal cooling liquid flow prediction model is corrected, and a corrected model is obtained; the real-time optimal cooling liquid flow is calculated; the rotating speed of a water pump in the transcritical carbon dioxide thermal management system is adjusted, and control over the transcritical carbon dioxide thermal management system is achieved; wherein the correction model is used for adapting to different gas coolers. The system can achieve the optimal performance under different working conditions, the energy efficiency and the operation stability of the system are improved on the whole, effective adaptation to different gas coolers can be achieved, and applicability is achieved.

A process for preparing ammonium sulfate from recovered ammonia in glyphosate is characterized in that a device consists of a deamination tower reboiler, a fraction water tank, a tail gas cooler, a deamination tower overhead condenser, a deamination tower feeding buffer tank, a deamination tower and a tail gas absorption tower which are communicated through pipelines according to specific logic to form a closed-loop system; the process flow comprises the following steps: a gas phase at the top of a mother liquor tower supplies heat to a reboiler, then condenses and enters a fraction water tank, the gas phase is cooled by a tail gas cooler and condensed by a condenser at the top of a deamination tower, a liquid phase enters a buffer tank and circulates to the deamination tower, the gas phase is introduced into a tail gas absorption tower, sulfuric acid is used as an absorption liquid to generate ammonium sulfate for reuse, and materials at the bottom of the deamination tower are recycled. The process realizes efficient recovery of ammonia resources and preparation of ammonium sulfate, synchronously recovers other useful components, reduces energy consumption through gradient utilization of energy, has both environmental protection and economic benefits, and is suitable for a resource recycling scene in glyphosate production.

The utility model provides a cooler condensate water automatic discharge device of a water electrolysis hydrogen production system, which comprises a cooler, an L-shaped liquid level switch and a self-control valve, the L-shaped liquid level switch comprises a guide rod, a high-position floating ball, a low-position floating ball, a retainer ring and a sealing structure, the high-position floating ball and the low-position floating ball are sleeved on the guide rod in a floating manner, and the self-control valve is arranged on the guide rod. Matched sensing assemblies are arranged in the high-position floating ball, the low-position floating ball and the guide rod, the sensing assemblies are electrically connected with the control system, and the control system is electrically connected with the self-control valve. According to the utility model, accurate and quantitative drainage is realized through the high / low level floating ball of the plug-in L-shaped liquid level switch, so that the waste of hydrogen (or oxygen) is effectively reduced, the gas utilization rate is improved, and the cost is effectively reduced; the L-shaped liquid level switch is small in size and easy and convenient to install, the gas cooler does not need to be greatly transformed, a large amount of installation space does not need to be occupied, the equipment purchase cost and the installation cost are reduced, and the space occupied due to the fact that equipment is additionally arranged is saved.

A refrigeration system includes one or more compressors (14,24), a gas cooler (105), a flash tank (106), one or more evaporators (12,22), a heat reclaim system (110), valves (120,122,124,126), and a control system (105). The heat reclaim system receives a working fluid from the one or more compressors and the gas cooler. The heat reclaim system is fluidly coupled, through a first supply line (111), to the one or mor compressors, and fluidly coupled, through a second supply line (113), to the gas cooler. The valves regulate a flow of the working fluid from the one or more compressors and the gas cooler to the heat reclaim system. The control system receiving at least one feedback signal from the heat reclaim system and, in response to the at least one feedback signal, operates the valves to regulate an amount of the working fluid circulated into the heat reclaim system from the one or more compressors and the gas cooler.