40 results about "Effects heat" patented technology

The utility model discloses an auxiliary cooling type transformer iron core, which relates to the technical field of transformer iron cores, and comprises a positioning frame, a plurality of groups of silicon steel inserts and partition plates, a plurality of groups of silicon steel inserts are arranged on one side of the positioning frame, the partition plates are arranged on one sides of the silicon steel inserts, a positioning mechanism is arranged on the outer side of the positioning frame, and the positioning mechanism is arranged on the outer side of the positioning frame. The positioning mechanism is used for fastening the multiple sets of silicon steel inserting pieces and the positioning frame so that the silicon steel inserting pieces can be conveniently separated and assembled, the heat dissipation mechanism is arranged on the outer side of the separation plate piece, the heat dissipation mechanism accelerates air flow near the silicon steel inserting pieces, the heat exchange efficiency of the heat dissipation pieces is improved, and the heat dissipation effect is enhanced. In the using process, the two sets of silicon steel inserting pieces are separated through the partition plate arranged in the middle, and then the situation that in the running process of the multiple sets of silicon steel inserting pieces, heat is accumulated in the middle, and then the heat cannot be effectively dissipated is avoided.

The utility model relates to a multistage flash evaporation and vacuum low-temperature negative-pressure black liquor concentration system based on industrial waste heat, which belongs to the technical field of flash evaporation and comprises at least one heat exchange unit and at least two flash evaporation units sequentially connected in series. The concentration medium outlet of the flash evaporation unit located at the last effect is communicated with the concentration medium inlet of the heat exchange unit equivalent to the flash evaporation unit of the last effect located at the last effect, and when the number of the heat exchange units is at least two, the heat exchange units are sequentially connected in series. The flash evaporation unit located at the first effect communicates with the heat exchange unit equivalent to the flash evaporation unit located at the first effect through a heating unit. The concentration medium generated by the last-effect flash evaporation unit flows back to the previous-effect heat exchange unit to serve as a heat source, energy recycling is achieved, the requirement for external heat input is reduced, and therefore the energy efficiency of the whole system is improved; the plurality of heat exchange units which are sequentially connected in series can more effectively utilize temperature gradient to transfer heat, so that the heat can be more uniformly transferred to each flash evaporation unit, and the heat transfer effect is enhanced.

The invention relates to the technical field of waste heat recovery of Bayer process aluminum oxide production, in particular to a seven-effect five-flash condensate water waste heat grading system and an aluminum oxide production device. According to the system, the first-effect condensate water and the second-effect condensate water are divided into two independent loops according to the thought of'temperature alignment and stepped recovery ', namely the first-effect condensate water and the second-effect condensate water, and the condensate water cooled by the two loops finally converges into the same recovery tank and then is pumped back to a boiler or a deaerator. Due to the fact that heat needed by the stock solution, the washing water and the secondary steam condensate water is all borne by original directly-discharged first-effect waste heat and second-effect waste heat, the amount of new steam needing to be supplemented by the evaporator is correspondingly reduced. And meanwhile, the first-effect heat transfer temperature difference of the evaporator is reduced, the system can maintain the seven-effect total temperature difference under the lower new steam pressure, and closed-loop energy saving of replacing new steam with waste heat is achieved.

The utility model relates to the technical field of cement production, and discloses a ground cement cooling device of a cement grinding mill. The ground cement cooling device of the cement grinding mill comprises a bottom plate, a supporting rod is fixedly installed above the bottom plate, a limiting pipe is fixedly installed above the supporting rod, a feeding port is fixedly formed in the upper portion of the limiting pipe, a limiting frame is fixedly installed at the left end of the limiting pipe, a driving pipe is movably installed in the center of the limiting pipe, and the driving pipe is fixedly installed at the left end of the limiting pipe. The heat conduction area between the heat pipe and air flow can be increased through the heat dissipation fins, the air flow is generated between the heat dissipation fins through the fans on the front side and the rear side, heat of the heat pipe is taken away through the air flow, and therefore water in the water tank can be rapidly cooled; the temperature difference between the cement and the circulating water is too small, so that the heat conduction efficiency is influenced, and the cooling effect is influenced, which are caused by too high temperature of the circulating water discharged out of the water tank due to long-time operation, is avoided.

This invention discloses an adaptive control system for a triple-effect heat recovery flue gas desulfurization unit. This invention relates to the field of heat energy recovery technology and solves the problem of excessive heat waste caused by the lack of analysis of different heat transfer loss scenarios. This invention collects and analyzes past parameters generated by the corresponding heat exchanger. Based on the analysis results, it identifies corresponding parameter packages, each with an optimal point corresponding to a specified optimal heat energy parameter. Subsequently, based on the corresponding demand parameters, it identifies the range to which such demand parameters belong and selects the corresponding optimal heat energy conversion value. Then, based on the optimal heat energy conversion value, it performs heat energy allocation to minimize heat loss, ensuring full utilization of waste heat and improving the overall waste heat recovery and utilization rate.

The utility model relates to the technical field of engine parts, in particular to a cylinder head heat dissipation structure which comprises a double-powerful-effect heat dissipation assembly, the double-powerful-effect heat dissipation assembly comprises a heat dissipation channel, an installation ring, an installation frame, heat dissipation fins and a fixing frame, the installation ring is fixedly connected with the heat dissipation channel and located above the heat dissipation channel, and the installation frame is fixedly connected with the installation ring and located above the heat dissipation channel. The mounting frame is fixedly connected with the heat dissipation channel and located above the center of the heat dissipation channel, the heat dissipation fins are detachably connected with the mounting ring and located below the mounting ring, and the fixing frame is fixedly connected with the mounting ring and located above one side of the mounting ring. Therefore, the original beneficial effects are kept, and meanwhile the problems that heat accumulation is caused by the fact that a traditional cylinder head heat dissipation mode is not high enough in heat dissipation efficiency and unreasonable in heat dissipation structure design, and the heat dissipation performance of the cylinder head cannot provide effective heat dissipation for an engine along with continuous improvement of the power density of the engine are actively and effectively solved.

This invention discloses a dual-source, low-dew-point, closed-loop water-cooled double-effect heat recovery unit and its control method. The unit includes: a main circuit, a first heat exchanger, a first three-way valve, a second three-way valve, a humidifier, a control module, and a second heat exchanger. The main circuit includes a compressor, a four-way valve, a water-cooled heat exchanger, a throttling structure, and an evaporator connected in sequence. The control module determines the operating mode based on environmental information and regulates the main circuit, the humidifier, the first three-way valve, the second three-way valve, the first heat exchanger, and the second heat exchanger. Utilizing externally input chilled water, the system adjusts the temperature of the air output from the third chamber at the air outlet while simultaneously adjusting the return temperature of the chilled water and outputting treated chilled water back to the outside. This satisfies the varying indoor heat load requirements due to different air supply temperature differences, achieving double-effect heat recovery and solving the problem of high energy consumption and large electric reheat requirements in dual-source, low-dew-point applications, making the unit more efficient, stable, and simple.

In a refrigeration apparatus, an outdoor unit includes a first refrigeration cycle which includes a compressor and in which a first working medium circulates. An indoor unit includes at least an indoor heat exchanger and second piping of a second refrigeration cycle which includes a refrigerant pump and in which a second working medium circulates. A relay unit independent of the outdoor unit and the indoor unit includes at least the refrigerant pump and a relay heat exchanger located between the refrigeration cycles to effect heat exchange between the refrigeration cycles. At least a flammable refrigerant is used as a refrigerant component of the first working medium, and at least a fluoroolefin is used as a refrigerant component of the second working medium.

The present application belongs to the field of chemical industry, and particularly relates to a method for inhibiting the scaling of a first effect heat exchanger in the evaporation and concentration process of sulfuric acid method titanium dioxide waste acid. The titanium dioxide waste acid is sent into a multi-effect evaporation and concentration system, and the feature is that only the circulating acid returned from the first effect concentration is sent into the first effect heat exchanger for heating, and the feeding position of fresh titanium dioxide waste acid is set at the rear end of the first effect heat exchanger outlet, so as to avoid the mixing of the circulating acid and the fresh titanium dioxide waste acid and then entering the first effect heat exchanger. The fresh titanium dioxide waste acid is mixed with the circulating acid flowing out of the heat exchanger after being heated, and the mixed acid is sent into an evaporation chamber for evaporation and concentration. The feeding temperature of the fresh titanium dioxide waste acid mixed with the circulating acid is 10-110 DEG C.

The utility model relates to a lithium bromide absorption unit of double-effect refrigeration and single-effect heating, which is based on a steam double-effect lithium bromide absorption water chiller with solution parallel circulation, a heat pump generator is additionally arranged in the low-pressure generator and the condenser cylinder, the heat pump generator is arranged between the low-pressure generator and the condenser, a condensate heat exchanger for the heat pump is separately arranged, and switching and adjusting valves are additionally arranged between the pipelines connecting the components. Through the switching and adjusting of the valves, the double-effect refrigeration cycle and the single-effect heating cycle can be safely, stably and reliably operated on the same unit, the initial investment of the equipment is reduced, the management cost of the equipment is saved, the land occupation of the equipment is saved, the annual operation rate of the unit is improved, the unit has wider adaptability and can be designed in a large size. The unit can meet the air conditioning and production process use through double-effect refrigeration in summer and can recover waste heat for heating through single-effect heat pump in winter, is very energy-saving and environment-friendly, and has very good economic and social benefits.

An integrated linear generator system includes, for example, a generator assembly, a control system, a frame system, an exhaust system, an intake system, a cooling system, a bearing system, one or more auxiliary systems, or a combination thereof. The generator system is configured to generate power, as controlled by the control system. The generator assembly may include an opposed- and free-piston linear generator, configured to operate on a two-stroke cycle. The intake and exhaust systems are configured to provide reactants to and remove products from the generator assembly, respectively. The cooling system is configured to effect heat transfer, material temperature, or both, of components of the integrated linear generator system. The bearing system is configured to constrain the off-axis motion of translators of the generator assembly without applying significant friction forces. The frame system is configured to manage rigidity, flexibility, and alignment of components of the integrated linear generator system.

This utility model relates to the technical field of waste heat recovery devices, and discloses a high-efficiency industrial pipeline waste heat recovery device, including a waste heat recovery machine. Both ends of the waste heat recovery machine are fixedly connected to connecting pipes. A waste heat recovery pipe is fixedly connected inside the waste heat recovery machine. A cleaning component is installed inside the waste heat recovery machine. A maintenance cover is slidably connected inside the waste heat recovery machine. A disassembly and assembly component is installed inside the maintenance cover. The cleaning component includes an air pipe and a nozzle. The outer wall of the air pipe is fixedly connected inside the waste heat recovery machine, and one end of the air pipe is fixedly connected to one end of the nozzle. In this utility model, the motor drives the rotating rod and slip ring, and in conjunction with the swing rod, the nozzle swings inside the waste heat recovery machine, thereby conveniently and thoroughly cleaning the internal waste heat recovery pipe, keeping the interior clean, solving the problem of excessive dust on the pipe surface affecting heat transfer, and improving the efficiency of heat transfer.

The invention relates to the field of aero-engine heat transfer and mass transfer analysis, and discloses a method and a system for processing cooling effect heat exchange experimental data under a curved surface structure of an aero-engine. The method comprises the following steps: expanding a whole curved surface cloud picture into a two-dimensional image containing real arc length coordinate points, reconstructing the expanded two-dimensional image into a grid matrix, performing identification assignment operation on the grid matrix by using a respe function, and accurately mapping physical quantity data to corresponding positions of the grid matrix, thereby forming a two-dimensional image type grid cloud picture. According to the method, data are displayed in a more intuitive and ordered manner, a polygonal region is drawn to select an invalid data range, and a createMask function is used to generate a binary mask region, so that the range of invalid data is clearly identified, corresponding physical quantity data is marked as invalid data, and interference is eliminated for subsequent deep analysis of valid data.

The utility model discloses a piece alkali concentration two -effect two -time steam recycling system, and two -effect heat exchanger's material inlet communicates with material input pipeline, and two -effect heat exchanger's material outlet communicates with two -effect evaporation chamber's material inlet, and two -effect evaporation chamber's material outlet communicates with the material inlet of final heat exchanger, and the material outlet of final heat exchanger communicates with the material inlet of final evaporation chamber, and the material outlet of final evaporation chamber communicates with the inlet of flash tank, and the steam outlet of final evaporation chamber communicates with the steam inlet of two -effect heat exchanger, and the steam outlet of two -effect heat exchanger communicates with the hot medium inlet of surface condenser, and the hot medium outlet of surface condenser communicates with the inlet pipeline of condensate recovery tank, and the water outlet of sewage adjusting pool is connected with the inlet pipeline of self -induction jar, and the outlet of self -induction jar communicates with the cold medium inlet pipeline of surface condenser through circulating pump, and the cold medium outlet of surface condenser is connected with the inlet pipeline of radiator, and the radiator is placed in sewage adjusting pool.

An indoor unit (1), in particular for a split heat pump, comprises: a housing (2) defining a housing compartment (3) inside; a fluid circuit (6); a refrigerant circuit (4); and a heat exchanger (5) in which the refrigerant circuit extends between two end bodies (7) configured to convey refrigerant through the heat exchanger to effect heat exchange with a fluid, in which each end body comprises a shut-off valve (8) designed to interrupt a flow of refrigerant circulating through the end body, in which the shut-off valve (8) is configured to shut off the flow of refrigerant circulating through the end body, and in which the shut-off valve (8) is configured to shut off the flow of refrigerant circulating through the end body. Each shut-off valve comprises an interruption cavity (9) and an interruption member configured to interrupt refrigerant circulating through the shut-off cavity (9), where each shut-off valve comprises an end conduit (10), where the end conduit is shaped to enable a fluid tight connection between the shut-off cavity and an external refrigerant circuit (19) and is formed as a single piece with the shut-off cavity.

The utility model relates to a five-tower reverse triple-effect heat pump assisted methanol rectification energy-saving device, which is characterized in that a tower top steam recompression type heat pump is adopted by a normal-pressure rectification tower, and a tower bottom liquid phase flash evaporation type heat pump is adopted by a high-pressure rectification tower; part of the gas phase at the top of the normal-pressure rectifying tower is compressed and heated by a compressor at the top of the normal-pressure rectifying tower and then supplies heat to a reboiler I of the high-pressure rectifying tower to heat reduced-pressure wastewater at the bottom of the high-pressure rectifying tower to increase the gasification amount. The process is coupled with the heat pump assisted rectification and multi-effect rectification technology, the comprehensive COP value of a heat pump reaches 3.348, the unit production consumption of refined methanol is 0.25 steam unit consumption and 95kW power consumption, remarkable energy conservation of methanol rectification is realized, and the method is suitable for energy-saving transformation of the existing five-tower reverse double-hot-trap process.

The invention discloses a PEM electrolytic cell-based green electricity hydrogen and oxygen production and air separation coupling system, which comprises a PEM electrolytic cell, an oxygen outlet of the PEM electrolytic cell is directly connected to an air inlet of an air separation device through a pipeline; the intelligent pressure control system can dynamically adjust the operation pressure of the PEM electrolytic bath and the air inlet pressure of the air separation device in real time, so that the pressure matching precision of the PEM electrolytic bath and the air inlet pressure is controlled within the range of + / -0.05 MPa; the heat exchanger is arranged between the PEM electrolytic cell and the air separation device and used for preheating inlet air of the air separation device through waste heat generated by the PEM electrolytic cell. Through system-level coupling, dynamic pressure matching, double-effect heat recovery and multi-parameter collaborative optimization, efficient integration of the PEM electrolytic cell and the air separation system is achieved, the system performance is remarkably improved, and the industrial defects of low oxygen utilization rate, high compression energy consumption and low heat efficiency in a traditional process are overcome.

The application discloses a kind of solar geothermal mixed use energy storage heat storage tank, it is related to energy storage equipment field, including: heat preservation box, bottom is provided with base, heat preservation box inside is used to hold liquid;Energy storage mechanism is set in heat preservation box, the bottom of energy storage structure extends to base, and energy storage mechanism includes heating assembly and control assembly, heating assembly includes heat conduction seat and heat absorption seat and is set in vertical direction activity, heat conduction seat is set in the top of heat preservation box, heat conduction seat is used to receive heat energy, when heat conduction seat and heat absorption seat adhere, heat absorption seat can heat liquid, control assembly includes moving frame and electromagnet, moving frame is connected with heat absorption seat by sliding tube, and air bag is set on moving frame, when electromagnet is electrified, electromagnet can adsorb moving frame and move downward, so that heat conduction seat and heat absorption seat separate;The energy storage heat storage tank can improve the problem that heat collection efficiency is poor, heat energy is difficult to be quickly collected in the inside of water tank, and the storage effect of heat is affected.

According to the double-effect heat exchange equipment, the shell-and-tube heat exchanger is adopted, the tube pass serves as a first heat exchange channel and is used for introducing fluid to be subjected to heat exchange, the shell pass is of an independently-arranged two-section structural design, and the first heat exchanger and the second heat exchanger are sequentially arranged in the flowing direction of the fluid to be subjected to heat exchange; and the heat exchange efficiency of the second heat exchange medium flowing in the second heat exchanger is higher than or lower than that of the first heat exchange medium flowing in the first heat exchanger. Compared with the mode that only one heat exchange medium is adopted for heat exchange in the prior art, the purpose that two different heat exchange media are arranged for heat exchange of the fluid to be subjected to heat exchange is mainly reflected in improving the heat exchange efficiency and achieving accurate temperature control. The utility model further provides a double-effect condensation system with the double-effect heat exchange equipment.

Cooling assembly for a blower blade foot support by a Peltier-cooled airflow. The invention relates to a cooling assembly (2) comprising a support (8) for blower blade feet (7) (4) (5), a front bearing enclosure wall (20) (19) located opposite said support, and a hollow annular volume (21) located between the two. The assembly further comprises: a pressurized air circuit (24), extending between an inlet (26) connected to the air stream (30) of the compressor assembly and an outlet (27) opening into the hollow annular volume, and a Peltier effect heat exchanger (31), comprising: at least one electrically powered Peltier module (33) comprising a cold plate (37) and a hot plate, and a heat exchange chamber (32), belonging to the pressurized air circuit, which is positioned against the cold plate of the Peltier module. Figure to be published with the abbreviation: Figure 1

The utility model relates to the technical field of heat dissipation mechanisms, and discloses a high-efficiency heat dissipation mechanism of a display module, which solves the problems that a dustproof net in the heat dissipation mechanism of the existing display module is easy to block by dust in use, so that the heat discharge efficiency is very influenced, and the heat dissipation effect is poor, and comprises a display, a heat dissipation window is fixedly installed on the lower portion of the rear side of the displayer, a dustproof net is fixedly installed on one side in the heat dissipation window, a plurality of heat dissipation fans are installed on the other side in the heat dissipation window, an equipment box is fixedly installed on the upper portion of the heat dissipation window, and a driving motor is fixedly installed in the middle of the top of the equipment box. Cleaning brushes are arranged at the two ends of the side, away from the displayer, of the equipment box, and a transmission assembly is arranged at the output end of the driving motor and is in transmission connection with the two cleaning brushes. According to the heat dissipation mechanism of the display module, dust on the dustproof net can be quickly and conveniently cleaned, and then heat can be efficiently discharged.

The utility model relates to the technical field of vacuum coating, in particular to a vacuum coating evaporation source cavity with a multi-layer heat insulation design, which comprises an evaporation source cavity connecting main component. According to the vacuum coating evaporation source cavity with the multi-layer heat insulation design, double-effect heat insulation can be conducted on the interior of the source cavity connecting main component through the arranged source cavity connecting main component, the arranged heating cavity assembly fixedly connected with the interior of the source cavity connecting main component, the arranged heat preservation inner container body and the arranged thickened inner container body; according to the vacuum coating evaporation source cavity heat insulation device, the vacuum coating evaporation source cavity can be subjected to multi-layer heat insulation by a user, the upper sealing plate can be disassembled through the arranged threaded rod after the user takes down the threaded rod from the nut, so that the interior of the source cavity connecting main component can be conveniently maintained, and after a push handle is pushed, the vacuum coating evaporation source cavity can be used for heat insulation. And after the plug plate is taken down, efficient air inlet and outlet can be carried out on the interior of the source cavity connecting main component.

The application provides a calcium carbide method vinyl chloride rectification device, which comprises a buffer tank, a booster pump, a water collecting tank, a first rectification low-boiling tower, an air condenser, a secondary condenser, a double-effect heat exchanger, a tail gas condenser, a second rectification tower, a monomer air cooler, a monomer condenser, a monomer intermediate tank and a monomer pump. The buffer tank is connected with the booster pump, the water collecting tank, the air condenser, the secondary condenser, the double-effect heat exchanger and the tail gas condenser. The booster pump and the water collecting tank are connected with the first rectification low-boiling tower. The first rectification low-boiling tower is connected with the double-effect heat exchanger and the second rectification tower. The air condenser is connected with the secondary condenser. The secondary condenser and the double-effect heat exchanger are connected with the tail gas condenser. The second rectification tower is connected with the monomer air cooler, the monomer intermediate tank and the monomer pump. The monomer air cooler is connected with the monomer condenser and the monomer intermediate tank. The monomer condenser is connected with the monomer intermediate tank. The monomer intermediate tank is connected with the monomer pump.

The utility model provides a kind of high efficient heat conduction stainless steel heat exchange tube, belong to heat exchange tube field, it is by heat exchange tube body, threaded pipe, connecting mechanism, filtering mechanism and rotating mechanism constitute, sealing ring and filter cartridge cooperation can improve sealing effect in the scheme, the setting of filter cartridge can filter heat exchange source, to remove the impurity in heat exchange source, prevent impurity from adhering on the inner wall of heat exchange tube body, affect the conduction of heat, the setting of heat exchange tube body is used to carry out heat exchange, the setting of threaded pipe can increase heat exchange area, to improve heat exchange efficiency, by sealing cover is connected on deslagging pipe, can seal deslagging pipe, sealing cover is convenient to detach simultaneously, filter cartridge is convenient to detach from deslagging pipe by sealing cover detachment separation, shaft rotation drives filter cartridge rotation, to adjust the filtration position of filter cartridge, ensure that filter cartridge can continuously filter.

The utility model discloses a coal chemical industry waste heat recovery device which comprises a recovery box, a supporting assembly is installed on the bottom face of the recovery box, an induction assembly is installed on the front face of the recovery box, a transmission assembly is installed in the recovery box, and an air exhaust assembly is installed on the back face of the recovery box. And a filtering assembly is mounted at the bottom end of the air exhaust assembly and comprises a filtering cylinder, the filtering cylinder is located on the back face of the recycling box, and a mounting frame is mounted on the outer surface of the filtering cylinder. According to the device, coal dust in coal gas can be filtered out under the action of a metal fiber filter plate in the filter assembly through the mounted filter assembly, so that the coal dust is prevented from flowing out along with the gas and adhering to the inner wall of a pipeline; therefore, by means of the device, the problem that according to an existing device, due to the fact that coal dust in coal gas can adhere to the inner wall of the spiral pipe, the interior of the spiral pipe is thickened, and the heat exchange efficiency is affected is effectively solved.

The utility model discloses a ventilation and heat dissipation structure of an electric control cabinet, which comprises a ventilation device combined with an electric control cabinet body, a back sealing plate combined with the electric control cabinet body for sealing, an axial flow fan and a separation box which are fixed with the back sealing plate through bolts, and an air inlet cover communicated with the interior of the separation box, a fixing plate is vertically arranged on the side face, away from the back sealing plate, of the separation box, and a shielding cover is fixed to the top surface of the electric control cabinet body through screws. The heat dissipation assembly comprises a first heat dissipation sheet fixedly installed on the fixing plate through a screw and a second heat dissipation sheet fixed to the side face of the separation box through a screw, and an element installation plate is arranged on the second heat dissipation sheet; according to the utility model, through the designed ventilation gas transmission assembly, the gas in the electric control cabinet body flows towards the top end and the bottom end, the exhaust design of changing the flow direction of the heat gas flow in the cabinet body and smooth ventilation is provided, and the flowing gas flow is prevented from being blocked by the electrical elements to influence the heat dissipation.

Equipped with a vehicle air conditioning system: comprising a refrigerant circuit (R, R1, R2, R3): a compressor (2) designed to compress a refrigerant; an external heat exchanger (7) designed to effect heat exchange between the refrigerant and the outside air; a heat emission device (4) designed to heat air supplied into a vehicle compartment; a first electronic expansion valve (6) which is arranged on a refrigerant inlet side of the external heat exchanger (7); a refrigerant-heat medium heat exchanger (64, 91, 93); and a second electronic expansion valve (73) arranged on a refrigerant inlet side of the refrigerant-heat medium heat exchanger (64, 91, 93); a heat medium circuit (61, 90, 92) designed to circulate a heat medium to effect heat exchange between the refrigerant and the heat medium in the refrigerant-heat medium heat exchanger (64, 91, 93); and a control unit (11) designed to control the refrigerant circuit (R, R1, R2, R3) and the heat transfer medium circuit (61, 90, 92), wherein the control unit (11) has heating modes and is configured to perform heating modes in heating mode for heating the vehicle compartment using the heat emission device (4), comprising: an outdoor air heat absorption heating mode to absorb heat from the outdoor heat exchanger (7) into the refrigerant discharged by the compressor (2) and to release heat in the heat dissipation device (4); and a waste heat recovery heating mode to absorb heat from the refrigerant-heat medium heat exchanger (64, 91, 93) into the refrigerant discharged by the compressor (2) and to release heat in the heat dissipation device (4), and the control unit (11) is configured to control the first electronic expansion valve (6) so that it closes, and to control a superheat level of the refrigerant so that it is increased on a downstream side of the refrigerant heat exchanger (64, 91, 93) when the outdoor air heat absorption heating mode is switched to the waste heat recovery heating mode.

Heat exchanger (120) designed as an evaporator for a compression refrigeration machine (110) for treating compressed air for a compressed air refrigeration dryer (100), wherein the heat exchanger (120) has the following features: a heat transfer block (222) with compressed air passages (323) shaped to guide compressed air through the heat transfer block (222), with refrigerant passages (325) shaped to guide a flammable refrigerant through the heat transfer block (222), and with separating passages (327) arranged between the refrigerant passages (325) and the compressed air passages (323), wherein the heat transfer block (222) is constructed from separating plates (224) between the passages (323, 325, 327), fins (226) in the passages (323, 325, 327), and strips (228) as side walls of the passages (323, 325, 327), and is shaped to allow heat transfer between compressed air guided through the compressed air passages (323) and through the to effect refrigerant passages (325) guided refrigerant; and an outer section arranged outside the heat transfer block (222), the outer section comprising first means (430) for distributing, collecting and / or diverting the compressed air from and into compressed air passages (323) and second means (440) for distributing, collecting and / or diverting the refrigerant from and into refrigerant passages (325), the heat exchanger (120) being formed as a double wall in boundary regions (650) where first means (430) and refrigerant passages (325) or second means (440) and compressed air passages (323) are adjacent to each other, with at least one channel (660) being arranged between double wall elements (228, 628, 980) which leads to a safety area separate from the first means (430) and the compressed air passages (323).

Heat exchanger (120) for a compression refrigeration machine (110) for treating compressed air for a compressed air refrigeration dryer (100), wherein the heat exchanger (120) has the following features: a pre-cooling section (230) with first compressed air passages (232) shaped to guide incoming compressed air through the pre-cooling section (230), and with second compressed air passages (234) fluidly separated from the first compressed air passages (232) in the pre-cooling section (230), which are shaped to guide outgoing compressed air through the pre-cooling section (230), wherein the pre-cooling section (230) is shaped to effect heat transfer between the incoming compressed air guided in the first compressed air passages (232) and the outgoing compressed air guided in the second compressed air passages (234); and an evaporator section (240) with third compressed air passages (242) which are fluid-mechanically connected to the first compressed air passages (232) and are shaped to guide the incoming compressed air from the pre-cooling section (230) through the evaporator section (240), with separating passages (244) fluid-mechanically separated from the third compressed air passages (242), one of which is arranged between adjacent third compressed air passages (242), and with refrigerant passages (246) fluid-mechanically separated from the third compressed air passages (242) and the separating passages (244), which are shaped to guide a refrigerant through the evaporator section (240), wherein each of the refrigerant passages (246) is integrated into one of the separating passages (244) and is surrounded on at least five of its six sides by a continuous internal volume of the separating passage (244), wherein the evaporator section (240) is formed,to effect heat transfer between the compressed air guided in the third compressed air passages (242) and the refrigerant guided in the refrigerant passages (246).

The utility model relates to a device for treating a coking sewage concentrated solution with low power consumption by utilizing waste heat of waste water. The device comprises a first-effect heat exchanger, a second-effect heat exchanger, a first-effect vacuum evaporator, a second-effect vacuum evaporator, a solid-liquid separator and a vacuum dryer, a liquid outlet of the first-effect heat exchanger is communicated with the first-effect vacuum evaporator, and a heat source inlet of the first-effect heat exchanger is communicated with a high-temperature wastewater inlet pipeline; an exhaust port of the first-effect vacuum evaporator is communicated with a heat source inlet of the second-effect heat exchanger, a liquid outlet of the first-effect vacuum evaporator is communicated with the second-effect heat exchanger, a liquid outlet of the second-effect heat exchanger is communicated with the second-effect vacuum evaporator, and a high-concentration brine discharge port of the second-effect heat exchanger is communicated with the vacuum dryer. An exhaust port of the second-effect heat exchanger is communicated with the vacuum dryer, and a water return port of the second-effect vacuum evaporator is communicated with a liquid inlet of the second-effect heat exchanger; and a liquid outlet of the second-effect vacuum evaporator is communicated with the solid-liquid separator. When a heat pump is not used, the ammonia distillation wastewater is used for heating the strong brine, negative pressure evaporation is matched, and energy consumption for treating the strong brine is low.