327results about "Energy efficient heating/cooling" patented technology

The present application provides a dynamics analysis method for an ammonia combustion refrigeration system in large park cooling. The method comprises: on the basis of a geometric structure of an ammonia combustion chamber and a fuel supply amount, calculating the heat generated by ammonia combustion and analyzing the heat transfer mode between the combustion chamber and a desorption tower, the heat transfer mode comprising direct contact type heat transfer and partition type heat transfer, and simulating the heat transfer process to obtain and draw the heat flux distribution of the tower wall surface; on the basis of the flow state and a relationship curve between the pressure drop and the flow velocity, analyzing the desorption process of a refrigerant in a solution, and on the basis of the concentration of the solution, a boiling point of the refrigerant, and the vapor pressure, calculating local desorption rates at different positions in the desorption tower and the refrigerant vapor generation amount; and on the basis of the heat flux distribution, calculating the temperature distribution of the solution, and analyzing the heat transfer and mass transfer processes in the desorption tower to obtain a local heat transfer coefficient and the mass transfer efficiency distribution of the surface of a filler.

The invention relates to the technical field of absorption type heat exchange and heat supply technologies, in particular to an intelligent large-temperature-difference absorption type heat exchange unit and a heat exchange method.The intelligent large-temperature-difference absorption type heat exchange unit comprises an I-type unit, an II-type unit and a control system.The I-type unit and the II-type unit each comprise a heat pump host, a generator, a condenser, an evaporator, an absorber, a heat exchanger and heat exchange liquid; the heat exchange liquid conducts cascade heat exchange in the generator, the condenser, the evaporator, the absorber and the heat exchanger, the heat exchange liquid comprises a lithium bromide solution and refrigerant water, the control system comprises a controller and a standby plate heat exchange module, and the two heat pump main machines are both in communication connection with the controller. The multi-stage evaporation and multi-stage absorption process is adopted, cascade heat exchange can be achieved, and the temperature difference of inlets and outlets of the I-type unit and the II-type unit is increased, so that the outlet temperature of the units is reduced, irreversible heat transfer loss in the units is reduced, and the efficiency of the units is improved.

The utility model discloses a heat pump system which comprises at least two indoor units, an outdoor main machine, an air pipe and a liquid pipe. The indoor unit comprises a first refrigerant port and a second refrigerant port communicating with the first refrigerant port. The outdoor main machine comprises a first refrigerant pipeline, a second refrigerant pipeline, a refrigerant outlet pipeline and a refrigerant inlet pipeline. The first refrigerant pipeline is connected with the main connector end of the air pipe. In each indoor unit, the first refrigerant port is connected with the corresponding branch connector end in the air pipe, and the second refrigerant port is connected with the corresponding branch connector end in the liquid pipe. And the second refrigerant pipeline is connected with the main interface end of the liquid pipe. The refrigerant outlet pipeline and the refrigerant inlet pipeline are used for being externally connected with a domestic hot water module, and hot water is prepared through heat exchange between a refrigerant and water. The liquid pipe and the air pipe are further used for being externally connected with a hydraulic module, and heat exchange between the refrigerant and water is achieved. The weight of the outdoor main machine is reduced, the main machine is integrated to a system, and a user can select a domestic hot water module and a hydraulic module according to requirements.

An electric lithium bromide absorption air conditioning unit and an energy storage refrigeration and heating system, including an electric lithium bromide absorption air conditioning unit and an electric heat storage device; the electric lithium bromide absorption air refrigeration unit comprises an electric heat generator; the electric heat generator comprises an electric heating device and / or an heat storage and heat exchanging device, and a grid power supply; the electric heating storage device comprises a heat storing and exchanging tank; the electric heating device is connected to the grid power supply. The generator used is an electric heating-type heat generator. By utilizing lithium bromide, it disrupts the conventional refrigeration compression cycle air conditioning system to address the global warming issue. This system can also give rise to independent energy storage cooling or heating solutions for grid-side energy storage projects, helping to solve the energy storage issues on the grid user side.

The disclosure relates to a method (500) for controlling a decentralized heat pump system (100). The system (100) comprising: a first set (110) of one or more heat pump modules; and one or more second sets (120a-c) of one or more heat pump modules (121, 122, 123, 124); the method (500) 5 comprising: determining (S502) at least one of an outdoor temperature, and data pertaining to an electric grid status of an electric grid (150, 160a-c), determining (S504), based on at least one of said outdoor temperature, and said data pertaining to the electric grid status, and, optionally, a specification of the system (100): an ambient side fluid recirculation loop temperature set 10 point of a working fluid of an ambient side fluid recirculation loop (102); detecting (S506) a temperature of the working fluid of the fluid recirculation loop (102); and controlling (S508) an operation of the first set (110) to adjust the first working temperature of the working fluid of the fluid recirculation loop (102) to match said ambient side fluid recirculation loop temperature set point.

A thermal storage absorption refrigeration unit, including: a thermal storage device and an absorption refrigerating machine; an output end of the thermal storage device is connected to an input end of the absorption refrigerating machine. The excessive wind and solar power, along with electricity from the grid during off-peak hours, are stored in thermal storage device in the form of heat. These thermal storage device are configured to serve as the heat source for the absorption refrigerating machine. The thermal storage device can achieve an energy storage efficiency of 96%, offering advantages over battery storage, compressed air energy storage, and pumped hydro storage in terms of safety, efficiency, energy savings, and low upfront investment.

The utility model discloses a split type multi-combined supply central air-conditioning system driven by solar energy, and belongs to the technical field of cooling and heating equipment. The system comprises a lithium bromide absorption refrigeration type host, a solar heat collector, a refrigeration water tank, a heating water tank, a plate heat exchanger, a fuel cell, a cooling tower, a wall-hanging stove and a fan pipe disc, wherein the lithium bromide absorption refrigeration type main machine absorbs heat energy provided by solar energy through lithium bromide, and the circulation process of refrigeration or heating is completed; water is heated by solar energy absorbed by the solar heat collector and fed into the heating water tank through a pipeline to be heated by the system. The plate heat exchanger is responsible for heat exchange between the lithium bromide absorption refrigeration host and the heating water tank; the fuel cell supplies power to the system, and the wall-hanging stove assists in heating the heating water tank. The cooling tower is used for dissipating heat of the lithium bromide absorption refrigeration host; cold water in the refrigeration water tank is dissipated into a room in an air mode through the fan pipe disc so that the system can conduct refrigeration.

According to the air source heat pump two-stage heating system, an air source heat pump unit compresses a low-temperature and low-pressure refrigerant into high-temperature and high-pressure gas through a compressor, and heat is transferred to outdoor air / circulating water through a water side / air side heat exchanger. The first-stage heating system is connected with the air energy collecting device and used for primarily increasing the water temperature; the second-stage heating system is connected with the first-stage heating system and is used for further raising the water temperature to the required supply temperature; according to the system, through a series-parallel connection two-stage heating mechanism of air energy, the system flow is effectively reduced, matching with an existing heating system with a small pipe diameter becomes possible, the temperature of supplied water and returned water is remarkably increased, and therefore the good tail end heating effect is ensured.

The utility model relates to the technical field of storage devices, in particular to a copper corrosion inhibitor storage device for a lithium bromide chilled water system, which performs position adjustment through an adjusting device, performs lifting adjustment through a lifting device and performs monitoring through the distance of a monitoring device relative to the storage device. The storage device is limited through the limiting device, and the copper corrosion inhibitor is stored through the storage device; comprising a console; the device further comprises an adjusting device, a lifting device, a monitoring device, a limiting device and a storage device, the adjusting device and the storage device are both installed on the operation table, and the lifting device, the monitoring device and the limiting device are all installed on the adjusting device. The adjusting device adjusts the position, the lifting device lifts, the monitoring device monitors the distance, the limiting device limits, and the storage device stores.

The present invention relates to a heat exchange substation (50) of an energy distribution system comprising: a heat exchanger (51) with thermal inertia comprising a primary side (37a) connected to a primary supply line (36) and to a primary return line (37) and a secondary side (37b), opposite the first primary side (37a), the secondary side (37b) being connected to a secondary supply line (56) and to a secondary return line (57) of a secondary heating circuit (68), the secondary supply and return lines (56, 57) being in communication with one or more heating units (18), wherein the heat exchanger (51) comprises a tank (67) within which a first shell- and-tube circuit (81) is arranged connected at the inlet to the primary supply line (36) and at the outlet to the primary return line (37) and a second shell-and-tube circuit (82) connected at the inlet to the secondary return line (57) and at the outlet to the secondary supply line (56), and the tank (67) contains a phase change material (71), the first shell-and-tube circuit (81) and the second shell-and- tube circuit (82) being in contact with the phase change material (71).

The application discloses an air-conditioning floor heating system and a control method thereof, wherein the air-conditioning floor heating system comprises a floor heating coil pipe for heating a room; an air-conditioning unit comprising a compressor, an evaporator, a throttling device and a condenser connected in sequence, the condenser is in heat exchange with a water inlet pipe of the floor heating coil pipe to supply heat for the floor heating coil pipe; a bypass pipeline is arranged in parallel with the condenser and is used for bypassing part of refrigerant discharged by the compressor; and a heat storage water tank, the bypass pipeline passes through the heat storage water tank and is used for heating water in the heat storage water tank, the water in the heat storage water tank is in heat exchange with the water inlet pipe of the floor heating coil pipe to heat water inlet of the floor heating coil pipe. The application solves the problem of water resource waste or high energy consumption in the anti-freezing mode of the air-conditioning floor heating system in the prior art, prevents the floor heating coil pipe from being damaged due to internal water freezing expansion, improves the anti-freezing property and operation stability of the floor heating coil pipe, and achieves the effects of saving water resource and saving energy consumption.

To provide an absorption type refrigeration system capable of suppressing increase in electric power consumption and shortening of a service life of a pump.SOLUTION: An absorption type refrigeration system includes: water supply piping 24 for sending out cooling water to a lower water tank 23; a float valve 25 for opening / closing the water supply piping 24; a water level sensor 26 for detecting a water level of the lower water tank 23; a control device that stops a cooling water pump P when a water level detected by the water level sensor 26 is lower than a first level, and starts an operation of the cooling water pump P when the water level detected through the water level sensor 26 is equal to or higher than a second level exceeding the first level; and second water supply piping 27 provided separately from the water supply piping 24 to send out the cooling water to the lower water tank 23. When stop frequency or operation start frequency of the cooling water pump P reaches predetermined frequency or more, the control device reduces a pressure-feed amount of the cooling water to be pressure-fed per unit time by the cooling water pump P.SELECTED DRAWING: Figure 2

The application discloses an air conditioner refrigeration and heat supply system based on a siphon principle and a running method thereof. The system comprises a refrigerant water system, a refrigerant steam system and a liquid level adjusting device for adjusting a refrigeration temperature. The refrigerant water system comprises a high-position water tank, a siphon starting pump, an evaporation container, a low-position water tank and a heat absorbing device for providing heat required by refrigerant evaporation. The running method comprises three processes of refrigerant water siphon decompression, heat absorbing evaporation and steam compression discharge. The application completely gets rid of the bondage of traditional "four refrigeration components", provides a simpler and more feasible structure form, and can be used as a cold water unit, a water source or air source heat pump and a cold and heat combined supply unit. The application has the characteristics of simple structure, low construction cost and one machine with multiple uses. Since water is used as the refrigerant, the application has the advantages of environmental friendliness, energy saving and emission reduction. Compared with a traditional steam compression cycle refrigeration method, the application has a wider refrigeration temperature range, a higher heat supply grade and a larger theoretical refrigeration coefficient.

The present invention discloses an air source heat pump heating system, method and computer-readable storage medium, and relates to the technical field of air source heat pump heating. The air source heat pump heating system includes a heating system and a control system. The control system includes a temperature collector, a data concentrator, a control platform and a controller. The temperature collector measures the real-time indoor temperature information of the target room. The data concentrator collects, stores and transmits the indoor temperature information. The control platform determines the reference temperature value, sends a shutdown control signal when the real-time reference temperature value of the heat-using end is greater than or equal to the upper limit value, and sends an open control signal when the real-time reference temperature value of the heat-using end is less than the lower limit value. The controller controls m air source heat pump units to start running according to the open control signal; and controls n air source heat pump units to stop running according to the close control signal. The embodiments of the present invention improve heating efficiency, reduce heating costs, and make the air source heat pump heating system more energy-efficient.

The present invention belongs to the technical field of heat exchange equipment, and discloses a heat exchanger using a combined liquid dispersion device and an absorption unit to which the heat exchanger is applied. The absorption unit includes an absorber, a regenerator, an evaporator, and a condenser. The evaporator and the absorber are arranged vertically in the same cylinder body, and the condenser and the regenerator are arranged vertically in the same cylinder body. The absorber, the regenerator, and the evaporator adopt a heat exchanger structure of a combined liquid dispersion device of a liquid drip device and a liquid spray device, and the liquid is collected in a conical liquid collecting tank, so that problems such as liquid flooding of pipes and cavitation of the liquid delivery pump caused by liquid sloshing due to the inclination or sway of the unit can be avoided. The heat transfer tubes and the tube sheets adopt special materials and an expanding and welding processing technology, so that the liquid can be evenly distributed and dispersed under the inclined or swaying state of the marine lithium bromide absorption unit, and problems such as refrigerant pollution and seawater corrosion of the unit are solved, the stability of the unit operation is ensured, and the effective utilization of energy is realized.

The invention provides a jet-absorption heat pump, and belongs to the technical field of refrigeration and heat pumps. The absorber is provided with a dilute solution pipeline which is communicated with the generator through a solution pump and a solution heat exchanger, the generator is further provided with a concentrated solution pipeline which is communicated with the absorber through the solution heat exchanger, the generator is further provided with a refrigerant steam channel which is communicated with the condenser, and the condenser is further provided with a condensate water channel which is communicated with the outside. The condenser communicates with the evaporator through a refrigerant liquid pipeline via a throttling valve, the evaporator communicates with a low-pressure steam inlet of the ejector through a refrigerant steam channel, a working steam channel communicates with a high-pressure steam inlet of the ejector outside, the ejector communicates with the absorber through a medium-pressure refrigerant steam channel, and the generator communicates with the outside through a high-temperature heat medium channel. The absorber and the condenser are communicated with the outside through heated medium channels respectively, the evaporator is communicated with the outside through a low-temperature heat medium channel, and the jet-absorption heat pump is formed.

The utility model discloses an air energy hot water system which comprises an air heat energy pump, a heat preservation water tank, a circulating pipeline and a heat supply pipeline, one end of the circulating pipeline is connected with the air heat energy pump, the other end of the circulating pipeline is connected with the heat preservation water tank, and a first temperature measuring sensor, a circulating water pump and a plurality of first valves are arranged on the circulating pipeline. The detection end of the first temperature measurement sensor detects the heat preservation water tank; one end of the heat supply pipeline is connected with the air heat energy pump, and the other end of the heat supply pipeline is connected with the heat preservation water tank. The other end of the heat preservation water tank is connected with a water supplementing pipeline, a water return pipeline and a water supply pipeline, the other end of the water supplementing pipeline is connected with an external water supply source, the other end of the water return pipeline is connected with the water supply pipeline, the water supply pipeline is connected with a plurality of water using ends, a second temperature measuring sensor is arranged on the water supply pipeline, and the detection end of the second temperature measuring sensor detects the water supply pipeline. According to the utility model, the hot water in the pig farm can be used instantly, and the user experience is improved.

The application relates to an absorption type cold and heat combined supply system and a circulating working medium concentration adjusting method thereof, the absorption type cold and heat combined supply system comprising an end user unit, a cold and heat combined supply unit connected to the end user unit, and a heating unit and a concentration adjusting unit connected to the cold and heat combined supply unit, the absorption type cold and heat combined supply system realizing small-range adjustment of the circulating working medium concentration of the whole system by adjusting the liquid level height of a gas-liquid separator of the cold and heat combined supply unit, realizing large-range adjustment of the circulating working medium concentration of the whole system and maintaining the charging amount of the circulating working medium in the system by adjusting the liquid level height of a first storage tank and a second storage tank of the concentration adjusting unit, giving consideration to the optimization adjustment of the charging amount of the circulating working medium in the system and the circulating working medium concentration of the system, and ensuring that the system can continuously and efficiently and stably operate under different working conditions.

Heat exchanger (1) comprising at least a first module (2) and a second module (12, 22, 32, 42, 52, 62, 72) for heat exchange between a first fluid medium and a second fluid medium, wherein the first fluid medium can be guided through a closed channel system (3) separated from the second fluid medium, wherein the closed channel system can be surrounded by the second fluid medium, wherein the second fluid medium is gaseous. A first wetting device (4) for the first module and a second wetting device (14, 24, 34, 44, 54, 64, 74) for the second module is provided, by means of which the first module and the second module can be wetted with a third fluid medium, wherein the first wetting device (4) for the first module (2) can be actuated independently of the wetting device (14, 24, 34, 44, 54, 64, 74) for the second module (12, 22, 32, 42, 52, 62, 72).

The utility model discloses a double-water-outlet air energy heating and water heating system which comprises an air source heat pump main machine, a domestic water tail end circulation heat exchange unit and a heating tail end circulation heat exchange unit. The domestic water tail end circulating heat exchange unit comprises a heat exchange water tank I and a domestic water tail end; the heating tail end circulating heat exchange unit comprises a heat exchange water tank II and a heating tail end, the heating tail end exchanges heat with an air source heat pump refrigerant through a heat exchange pipe, the heat exchange water tank II is connected to the heat exchange pipe of the heating tail end circulating heat exchange unit in series, and a water collector and a water distributing and collecting device are arranged on the heat exchange pipe between the heat exchange water tank II and the heating tail end; the water collector and the water distributing and collecting device are located on a circulating water inlet pipeline and a circulating water outlet pipeline of the heating tail end circulating heat exchange unit, and a water supplementing opening is formed in the heat exchange water tank II. The domestic water tail end circulation heat exchange unit and the heating tail end circulation heat exchange unit exchange heat with the air source heat pump main machine, independent heat exchange of the domestic water tail end and the heating tail end is achieved, the cleanliness of domestic hot water is guaranteed, and the heat exchange efficiency is high.

The utility model discloses a floor heating and domestic hot water combined heat pump system, comprising: refrigerant circulation loop: compressor, first air side heat exchanger, four -way valve, second air side heat exchanger and intermediate heat exchanger form, intermediate heat exchanger includes: first heat exchange pipe part and second heat exchange pipe part, water circulation loop: floor heating, first heat exchange pipe part, second heat exchange pipe part, water pump and water tank heat exchanger constitute, first heat exchange pipe part is connected with floor heating, second heat exchange pipe part is connected with first heat exchange pipe part, water tank heat exchanger and floor heating, first control valve controls first heat exchange pipe part and floor heating or water tank heat exchanger intercommunication, when system is in floor heating water tank linkage operation mode, first heat exchange pipe part, second heat exchange pipe part, first control valve and water tank heat exchanger form domestic hot water circulation loop, and floor heating, second heat exchange pipe part form first floor heating water circulation loop, the heat pump system of the utility model sets up one intermediate heat exchanger and can realize the simultaneous supply of floor heating and domestic hot water.

Provided are integrated water device applied to heat pump system, heat pump system, and control method thereof. The integrated water device includes: main module, auxiliary module, and three-way valve; when the heat pump system simultaneously has heating water demand and air conditioning demand, first end and second end of the three-way valve are controlled to be communicated, so that the heat pump main unit heats the water in the domestic water tank through the main module, and the heat pump auxiliary unit provides heat source or cooling source to the terminal device through the auxiliary module; and, when the heating for the domestic water tank is completed, the first end of the three-way valve is controlled to switch to be communicated with the third end so that the heat pump main unit and the heat pump auxiliary unit jointly provide heat source or cooling source to the terminal device.

The utility model discloses a combined throttling device and ammonia water absorption refrigeration system, wherein the combined throttling device comprises a stepping motor, a needle valve, a controller and a limit switch, the needle valve is used as a throttling element, and the stepping motor comprises an output shaft used for outputting linear displacement; the output shaft is connected with a valve needle of the needle valve and converts output displacement into linear displacement of the valve needle, the controller is used for controlling the displacement of the output shaft so as to adjust the opening degree of the needle valve, the limiting switch is connected with the controller, and when the needle valve reaches the minimum opening degree and / or the maximum opening degree, the limiting switch is triggered to send an electric signal to the controller. According to the combined throttling device, the valve needle of the needle valve is driven to axially move through accurate displacement output of the stepping motor, accurate adjustment of the sectional area of a fluid channel can be achieved, and therefore the high-accuracy control requirement of a system for refrigerant flow is met.

The utility model discloses a boiler and heat pump coupled heating and domestic hot water supply system which comprises a boiler, a heat pump and a heat pump, the air source heat pump unit is connected to a heating user through a second output pipeline and a second input pipeline respectively, and the second output pipeline and the second input pipeline are connected to the first output pipeline and the first input pipeline respectively; an inlet pipeline of a high-temperature runner of the heat exchanger is connected to the first output pipeline, an outlet pipeline of the high-temperature runner is connected to the first input pipeline, an inlet of a low-temperature runner of the heat exchanger is connected to the second input pipeline through a pipeline, and an outlet of the low-temperature runner is connected to the second output pipeline through a pipeline; the temperature sensor is mounted on the second output pipeline; and the electric control valve is mounted on the fourth output pipeline. The problem that a heat supply system and a domestic hot water supply system are independently arranged in the north, and a boiler cannot fully play a role is solved.

The utility model relates to the technical field of air energy water heaters, in particular to an air energy water heater convenient to install, which comprises an air energy water heater body, a limiting groove is arranged at the bottom end of the air energy water heater body, and a first limiting block is slidably connected to the inner side of the limiting groove. First fixing holes which are symmetrically formed are formed in the outer side of the air energy water heater body, second fixing holes which are symmetrically formed are formed in the outer side of the first limiting block, and fixing bolts are arranged on the inner sides of the first fixing holes and the inner sides of the second fixing holes. Through components such as a limiting groove, a first limiting block, a first supporting leg, a first fixing hole, a second fixing hole, a fixing bolt and a universal wheel, the fixing bolt is clamped into the first fixing hole and the second fixing hole, the first limiting block is fixed in the limiting groove, and then under the action of the first supporting leg and the universal wheel below the first limiting block, the first supporting leg is fixed to the first limiting block. And the air energy water heater is easy to move and is convenient to move during installation and maintenance.

The invention discloses an absorption and compression high-temperature heat pump system with a synergistic ejector. The absorption and compression high-temperature heat pump system comprises a compression type heat pump, an absorption type heat pump and the ejector. The compression heat pump comprises a gas-liquid separator, a compressor, an intermediate heat exchanger and a working medium pump, a gas phase outlet of the gas-liquid separator, the compressor, the intermediate heat exchanger, the ejector and an inlet of the gas-liquid separator are sequentially connected, and the working medium pump is connected between a liquid phase outlet of the gas-liquid separator and the intermediate heat exchanger. A first outlet of the solution heat exchanger and an inlet of the expansion valve generator are sequentially connected, a first outlet of the generator is connected with the ejector, a second outlet of the generator is connected with an inlet of the solution pump, an outlet of the solution pump is connected with a second inlet of the solution heat exchanger, and a second outlet of the solution heat exchanger is connected with a second inlet of the absorber. The heat supply efficiency of the absorption heat pump can be improved, and the problems that due to the fact that the exhaust temperature of the compressor is too high, lubricating oil is cracked, and the high-temperature heat supply compression ratio is too large are solved.

The ventilation and dustproof structure comprises a hot water unit body, a ventilation frame is fixedly installed on the side wall of the hot water unit body, ventilation holes are formed in the ventilation frame, an annular plate is inserted into the ventilation frame, a filter screen is fixedly installed in the annular plate, and the filter screen is connected with the ventilation frame. An annular plate is arranged on the right side of the ventilation frame, an insertion hole is formed in the right side of the ventilation frame, an insertion plate matched with the annular plate is inserted into the insertion hole, and a movable door is embedded in the left side of the ventilation frame. The ventilation frame is matched with the filter screen to conduct double filtration on dust, the dustproof effect is improved, the filter screen is convenient to replace, the ventilation effect is improved, dust is not prone to entering the hot water unit body during ventilation, and the heat dissipation effect of electronic devices in the hot water unit is improved.

The present invention relates to the field of sub-Kelvin temperature range refrigeration technology and discloses an adsorption-type helium-4 continuous operation sub-Kelvin refrigeration system. The system comprises a refrigeration system comprising an evaporation module, a first helium-4 storage module, a second helium-4 storage module, a switch module, and a cooling module. The present invention utilizes a blade-shaped structure to effectively reduce heat loss caused by superfluid helium-4 while ensuring the helium-4 extraction rate. The pump core fin structure accelerates the temperature change of the activated carbon and the adsorption and release rate of helium-4. Simultaneously, the densely packed pore structure of the cooling body significantly increases the condensation recovery rate of helium-4. The multi-layered, nested, non-contact structure of the switch upper and lower end caps and the central tube increases the thermal contact area, effectively improving the switch module's conduction rate. The extraction tube and activated carbon increase the switch module's helium-4 capacity and the effective thermal conductivity-to-heat ratio when the switch module is in the on and off states.

According to the lithium bromide refrigerating system, cooling water in a water outlet pipe is conveyed to a water inlet pipe through a bypass water inlet pipe and a bypass water outlet pipe in sequence through operation of a bypass pump, so that self-circulation that the cooling water flows back after being discharged from a lithium bromide unit is achieved; therefore, the cooling water is heated through heat generated by bypass return water circulation of the cooling water and circulation of equipment, the temperature of the cooling water is increased, the starting condition of the lithium bromide unit is met, stable operation of the lithium bromide unit after starting can be guaranteed in severe cold areas with low external temperature, the lithium bromide unit is protected, and the service life of the lithium bromide unit is prolonged. And the operation time of the lithium bromide unit is prolonged.

The present application belongs to the technical field of temperature control, and particularly relates to an air source heat pump energy-saving temperature control method, a network-connectable temperature control method, a temperature controller, and a temperature control system. The method comprises the following steps: presetting a water temperature table; obtaining an outdoor temperature and querying the water temperature table to obtain a target water temperature; obtaining an indoor temperature and comparing it with an indoor target temperature to determine whether the water temperature needs to be increased; executing an intelligent water temperature control program, obtaining a current indoor temperature, and comparing it with the indoor target temperature to determine a subsequent program. The temperature control method adopts an intelligent control mode, optimizes the target water temperature and the water temperature table, can control the water temperature at a relatively reasonable temperature, avoids energy waste caused by excessively high water temperature, and thus achieves the purpose of energy saving and emission reduction. The present application can obtain real-time weather conditions of a user's local area through a remote server, and can avoid the problem that the indoor temperature cannot reach the target temperature for a long time due to natural reasons.