114results 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.

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 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.

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 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.

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.

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 invention provides a thermal management module (1) for a building heating system (2), comprising a heat pump (3) configured to exchange heat with a fluid, a heating circuit manifold (4) configured to distribute the fluid, and a consumer interface (7) configured to connect at least two consumers (15). The consumer interface (7) is configured to provide fluid communication between the at least two consumers (7) and the heating circuit manifold (4). Furthermore, the invention provides a building heating system (2) with a thermal management module (1), as well as a method for heating a building facility.

The utility model belongs to the technical field of heat pumps, and discloses a heat pump system, in summer, a floor heating device exchanges heat with indoor air and absorbs heat of the indoor air, a water source heat pump assembly absorbs heat of the floor heating device to heat water in an inner container, and when the heat absorbed by the floor heating device is larger than the heat absorbed by the water source heat pump assembly, the water source heat pump assembly absorbs heat of the water source heat pump assembly. At the moment, a water outlet of a water source heat pump assembly can be connected into a water return opening of an air source heat pump device through a floor heating water return pipe and is communicated with the water return opening, cold water prepared by the air source heat pump device is led into a water inlet of the floor heating device, and the indoor environment dew point temperature is increased. Therefore, the air source heat pump device is used for reducing the water supply temperature of the floor heating device so as to ensure that the indoor humidity meets the requirement, and the purpose of improving the comfort level of a user is achieved while the requirement for heating water is ensured.

A household central heating and water source heat pump composite device comprises a heating water supply pipe, a heating water return pipe, a water source heat pump system and a heating tail end, and the water source heat pump system comprises a compressor, a first double-flow-channel heat exchanger, a second double-flow-channel heat exchanger and an electronic expansion valve. The first double-flow-channel heat exchanger comprises a first water path and a first refrigerant flow path serving as a condenser, and the second double-flow-channel heat exchanger comprises a second water path and a second refrigerant flow path serving as an evaporator; due to the arrangement of the first double-flow-channel heat exchanger and the second double-flow-channel heat exchanger, the central heating system and the water source heat pump system are coupled together and cooperate with each other, and the central heating system can work independently; return water temperature is fully utilized, a water source heat pump system is energy-saving, and indoor temperature can be increased.

A method for identifying a deviation in a thermal energy circuit is presented. The method comprising: receiving (302) a first hot fluid flow measurement (f1) from a first hot fluid flow sensor (208) arranged in a hot fluid conduit (102); receiving (304) a first cold fluid flow measurement (r1) from a first cold fluid flow sensor (204) arranged in a cold fluid conduit (104); receiving (306) a second hot fluid flow measurement (f2) from a second hot fluid flow sensor (210) arranged in the hot fluid conduit (102) upstream the first hot fluid flow meter (208); receiving (308) a second cold fluid flow measurement (r2) from a second cold fluid flow sensor (206) arranged in the cold fluid conduit (104) downstream the first cold fluid flow sensor (204); receiving (310) a thermal device flow measurement (g) from a thermal device flow sensor (202) configured to measure a thermal device flow of a thermal device (106a) connected to the hot fluid conduit (102) downstream the first hot fluid flow sensor (208) and upstream the second hot fluid flow sensor (210), and to the cold fluid conduit (104) upstream the first cold fluid flow sensor (204) and downstream the second cold fluid flow sensor (206). The method further comprising upon (312) the first hot fluid flow measurement (f1) is different from the second hot fluid flow measurement (f2) and the thermal device flow measurement (g) in combination, generating (314) a first deviation signal indicating a deviation in the hot fluid conduit (102), or upon (316) the first cold fluid flow measurement (r1) is different from the second cold fluid flow measurement (r2) and the thermal device flow measurement (g) in combination, generating (318) a second deviation signal indicating a deviation in the cold fluid conduit (104).

An absorption heat pump apparatus for optimizing performance in low air temperature and / or high delivery water temperature operating conditions which maintains all the functions of the so-called booster systems, preventing the generator from exceeding the maximum temperature limits. Furthermore, the apparatus allows a significant increase in the efficiency of the heat pump when the booster mode is activated for producing high temperature hot water in the case of medium or high outdoor temperatures, i.e., conventionally, for producing domestic hot water which is required throughout the year.

The utility model belongs to the technical field of ammonia water preparation, and provides a condensing device for an ammonia water absorption type refrigerating unit. The utility model relates to a condensing device for an ammonia water absorption refrigerating unit. The condensing device comprises a main box body, a plate heat exchanger, a hydraulic assembly and a suction main piece, the main box body is provided with a mounting main cavity and a sliding cavity; the plate heat exchanger is installed in the main box body and located in the installation main cavity, and one end of the plate heat exchanger extends outwards and is connected with one end of the suction main piece; the other end of the plate heat exchanger extends outwards and is used for collecting cooled ammonia water; the other end of the suction main piece is communicated with a high-pressure ammonia gas source; the mounting main cavity is communicated with the sliding cavity; liquid nitrogen is injected into the mounting main cavity in a sealed mode, and the plate heat exchanger is immersed in the liquid nitrogen. The hydraulic assembly is installed in the sliding cavity in a sliding mode. The device not only is reasonable in design, but also is simple to operate, and can effectively improve the condensation effect and reduce the plate-type external heat of a core component.

The heat pump water system comprises indoor heat exchange equipment, a heat pump device, auxiliary heat exchange equipment and a valve assembly, and the heat pump device communicates with a water inlet of the indoor heat exchange equipment through a first water supply pipeline and communicates with a water outlet of the indoor heat exchange equipment through a first water return pipeline; the auxiliary heat exchange equipment is communicated to the first water supply pipeline through a second water return pipeline and a second water supply pipeline; the valve assembly is arranged on the second water return pipeline and / or the second water supply pipeline and used for adjusting the flow of water flowing from the second water return pipeline to the second water supply pipeline through the auxiliary heat exchange equipment. According to the heat pump water system, the water flow flowing to the auxiliary heat exchange equipment can be adjusted by controlling the valve assembly according to the series complementary structure of the heat pump device and the auxiliary heat exchange equipment, the problem that the effect of an independent heat pump device is poor is solved, and therefore the heating effect of the heat pump water system is improved.

A household central heating warming system comprises a central heating water supply pipe, a central heating water return pipe, a water source heat pump main machine, a circulating water pump and an indoor radiator, and the water source heat pump main machine comprises an evaporation water side heat exchanger and a condensate water side heat exchanger; the water supply pipe, the evaporation water side heat exchanger and the water return pipe form a heat source loop of the water source heat pump, and the circulating water pump, the condensate water side heat exchanger, the indoor radiator and the circulating water pump form a warming loop. The heat source loop and the warming loop of the water source heat pump work independently and cooperate with each other, heat energy of the water source heat pump comes from the central heating system, the defect of low room temperature is overcome, and the water source heat pump has the advantage of being low in energy consumption.

The present invention relates to a method for controlling one or more heat pumps (110) connected to a distribution grid (10) for fluid-based distribution of heating and cooling in order to, at least partly, compensate for a cold outtake from the distribution grid (10) by a first cooling machine (120) connected to the distribution grid (10). Alternatively, or in combination, one or more cooling machines (120) connected to the distribution grid (10) may be controlled in order to, at least partly, compensate for a heat outtake from the distribution grid (10) by a first heat pump (120) connected to the distribution grid (10). The controlling is made a control server (200) monitoring outtake of heat and / or cold from the distribution grid (10) by the heat pumps (110) and cooling machines (120) connected to the distribution grid (10). The control server (120) generates and sends out control messages to the heat pumps and / or cooling machines.

The object of the invention is a floating device (1) for installation in a body of water (2) and for introducing thermal energy into and for extracting thermal energy from a body of water (2), comprising a hollow space (3); at least one main heat exchanger (4), said main heat exchanger (4) being at least partially immersed in the body of water (2) after the installation of the device (1) in the body of water (2) and being arranged outside the device (1), in particular below the bottom and / or on the sides of the device (1); at least one heat exchange element, selected from the group consisting of a secondary heat exchanger (22) and a heat pump (5), arranged within the apparatus (1); and at least one tank (6) arranged inside the apparatus (1), wherein the tank (6) is also connectable to a second heat transfer fluid conduit (7) outside the apparatus (1). The object of the invention also comprises a method of heating and a method of cooling a building by means of said floating device (1).

The invention relates to an operation control method and device for a lithium bromide refrigerating unit. The operation parameters of the unit are monitored in real time; wherein the operation parameters at least comprise flow and temperature of cold water, hot water and cooling water; based on the operation parameters, calculating at least one indirect characteristic quantity reflecting the overall thermodynamic state of the unit; according to the change mode of the indirect characteristic quantity, the current abnormal state of the unit is judged; analyzing a fault cause based on the abnormal state; and outputting a corresponding control maintenance strategy according to the fault inducement. According to the technical scheme provided by the invention, the dependence on the experience of maintenance personnel can be greatly reduced, the accuracy of abnormity judgment and the maintenance efficiency are improved, the problem can be quickly positioned, and effective measures can be taken, so that the stable operation of the unit is ensured, the shutdown loss is reduced, and the operation reliability and economy of the unit are improved.

The embodiment of the utility model discloses a heat pump system. The heat pump system comprises indoor heat exchange equipment, a heat pump device, auxiliary heat exchange equipment and a valve assembly. The heat pump device communicates with a water inlet of the indoor heat exchange equipment through a first water supply pipeline and communicates with a water outlet of the indoor heat exchange equipment through a first water return pipeline. The auxiliary heat exchange equipment is communicated to the first water supply pipeline through a second water supply pipeline and is communicated to the first water return pipeline through a second water return pipeline; the valve assembly is arranged on the second water supply pipeline and / or the second water return pipeline and used for adjusting the flow of water flowing from the second water return pipeline to the second water supply pipeline through the auxiliary heat exchange equipment. According to the embodiment of the invention, heat energy complementation of the heat pump device and the auxiliary heat exchange equipment can be realized, so that a better heat energy effect can be realized.

A system includes a rectifier configured to rectify a line power having a line energy, a buck converter configured to generate a desired voltage output based on the rectified line power, and a bypass capacitor disposed between the rectifier and the buck converter, wherein the bypass capacitor is configured to bypass a switching energy of the buck converter to attenuate a plurality of pulses of the rectified line power that are not attenuated by the buck converter, and wherein the plurality of pulses correspond to harmonics of the rectified line power.

An auxiliary heater (1) for mounting in a heating circuit (2) which includes a heat pump (3) and an associated heating system (4) in a building within which the heating circuit (2) is mounted. Heating water generated by the heat pump (3) is circulated through the heating system (4) by means of a heating water circulating line (5) of the heating circuit (2). The auxiliary heater (1) is mounted in the heating circuit (2) between the heat pump (3) and the heating system (4) to boost the temperature of the heating water when required. The auxiliary heater (1) comprises a mixing tank (7) through which the heating water is delivered by mounting the mixing tank (7) in the heating water circulating line (5) between the heat pump (3) and the heating system (4). An auxiliary heat exchanger (8) is connected to the mixing tank (7) for circulating heating water between the mixing tank (7) and the auxiliary heat exchanger (8) for heating the heating water as required to raise the temperature of the heating water discharged from the heat pump (3).

The application discloses an air conditioner and water heater main machine fusion body with L-shaped outer heat exchanger structure complementary air path merging, which merges air conditioner main machine heat exchanger and water heater main machine heat exchanger, and is provided with an air conditioner outer heat exchanger refrigerant pipeline system and an air energy water heater outer heat exchanger refrigerant pipeline system in a plurality of L-shaped outer heat exchanger fin plate groups arranged side by side, and is respectively connected to an air conditioner compressor and an air energy water heater compressor to form an air conditioner refrigerant circulation loop and an air energy water heater refrigerant circulation loop, that is, the air conditioner refrigerant circulation loop and the air energy water heater refrigerant circulation loop jointly occupy fin parts of the fin plate groups, when the two independently operate, through vertical fin heat bridge effect, the fin parts corresponding to the stopped operation main machine are used to exchange heat with ambient air, the utilization coefficient of the whole L-shaped outer heat exchanger fin plate group fusion body is improved, and the heat exchange fin area of the operation main machine outer heat exchanger is expanded and the heat exchange temperature difference is reduced.

The application discloses an air conditioner water tank temperature control method, system and device, an air conditioner and a computer readable storage medium, the control method comprising: acquiring an ambient temperature; determining a water tank target temperature according to the ambient temperature and preset heating curve preset information; wherein the heating curve preset information comprises an indoor target room temperature, a curve starting temperature and a curve maximum temperature, wherein the curve starting temperature is less than the curve maximum temperature; and heating the air conditioner water tank according to the water tank target temperature. The water tank temperature control method effectively achieves the effect of dynamically adjusting the temperature required by the user according to the ambient temperature. And by automatically acquiring the ambient temperature and the preset heating curve information, the water temperature is dynamically controlled to obtain the water tank target temperature, providing a comfortable temperature for different scenes, maximizing the heating demand of the user, and improving the user experience.

The utility model discloses concentration sampling equipment for an ammonia water absorption refrigeration system. The concentration sampling equipment comprises a sampling container, a sampling tube, an anti-pollution device, a first sealing assembly and a second sealing assembly, a cavity is defined in the sampling container, the sampling container is provided with a cavity inlet and a cavity outlet which are communicated with the cavity, the sampling pipe is used for sampling ammonia water and provided with a sampling inlet and a sampling outlet, the sampling outlet is communicated with the cavity inlet, and the anti-pollution device is connected between the sampling pipe and the sampling container or arranged in the sampling pipe. The filter is used for filtering an ammonia water sample entering the cavity through the sampling pipe, the first sealing assembly is arranged at the inlet of the cavity and used for sealing the inlet of the cavity, and the second sealing assembly is arranged at the outlet of the cavity and used for sealing the outlet of the cavity. The concentration sampling equipment provided by the utility model has the advantages of convenience in operation, reliability in sealing and the like, and is favorable for improving the operation efficiency and the stability of the ammonia water absorption refrigeration system.

A heat absorption and radiation system uses a heat medium containing a rubidium-manganese-iron cyano complex, and is configured to release heat from the heat medium by applying a pressure to the heat medium and causing phase transition of the rubidium-manganese-iron cyano complex from a high-temperature phase to a low-temperature phase, absorb heat into the heat medium by releasing the pressure applied to the heat medium and causing phase transition of the rubidium-manganese-iron cyano complex from the low-temperature phase to the high-temperature phase, and repeat application of the pressure to and release of the pressure from the heat medium. Thus, it is possible to efficiently absorb and release heat through effective utilization of the characteristics of the rubidium-manganese-iron cyano complex.

The utility model relates to the technical field of heat pump systems, and provides a heat pump hot water unit and an air heat pump system, the unit comprises a buffer water tank and a plurality of indoor tail ends, the water inlet ends of the plurality of indoor tail ends are communicated with the buffer water tank, and the water outlet ends of the plurality of indoor tail ends are communicated with the buffer water tank; main path control valves are arranged between the water inlet ends of the indoor tail ends and the buffer water tank, and each main path control valve can independently adjust the on-off state of the corresponding indoor tail end, so that the heating or refrigerating requirements of different areas are met according to the requirements; a water mixing valve is arranged between the water inlet end of at least one indoor tail end and the buffer water tank, the water mixing valve is connected between the water outlet end of the corresponding indoor tail end and the buffer water tank, the water supply temperature of the corresponding indoor tail end is adjusted through the water mixing valve, the differential temperatures of different indoor tail ends are achieved, and therefore the user experience is improved.

The utility model discloses an ammonia supplementing device for a heat supply heat exchanger based on pressure maintaining closed connection, and relates to the technical field of ammonia supplementing for heat supply heat exchangers. A driving mechanism is arranged at the bottom of the device body, the top of the driving mechanism is connected with a flow guide mechanism, the flow guide mechanism comprises a first flow guide shaft, the first flow guide shaft is located in a flow guide pipe, a sealing pipe is arranged at the left end of the flow guide pipe, and a flow meter and a first pressure detection valve are installed at the top of the sealing pipe. The left end of the shunt pipe is connected with a heat exchanger body pipeline. Through the arrangement of the flow guide mechanism, when the driving mechanism drives a first flow guide shaft in the flow guide mechanism to rotate, liquid ammonia in the device main body is conveyed into the sealing pipe through the flow guide pipe, so that the sealing pipe conveys the liquid ammonia into the heat exchanger body through the flow dividing pipe; and the first flow guide shaft can block the interior of the flow guide pipe, so that the problem that liquid ammonia in the flow dividing pipe flows back is avoided.