557results about How to "Meet heating needs" patented technology

The invention discloses a whole automobile heat management system for a hybrid power automobile. The whole automobile heat management system comprises a heat pump circulation loop, an engine heat management loop, a passenger cabin heat management loop, a motor heat management loop and a battery heat management loop, wherein the heat pump circulation loop comprises a compressor, a first heat exchanger, a heat exchanger, an evaporator and a second heat exchanger; the battery cooler is connected in parallel with the evaporator and is then connected with the second heat exchanger; the engine heat management loop comprises an engine, a first heat radiator and a first water pump; the motor heat management loop comprises a motor, a third water pump and a second heat radiator; the passenger cabin heat management loop comprises a hot air core body, a second water pump and a first heat exchanger; the battery heat management loop comprises a battery pack, a fourth water pump and a battery cooler. The system realizes the whole automobile heat management and reasonable distribution and utilization of the hybrid power automobile.

A low-temperature heating control method for a lithium ion battery includes the following steps: first selecting a capacitive component; connecting the capacitive component and an additional power device in series, and then connecting a switch device in parallel to form a heating control circuit; then sequentially connecting the heating control circuit with the lithium ion battery, two sets of power devices of a motor controller body, and two-phase winding inductance of a electromotor to form a loop; and controlling charge and discharge of the capacitive component and magnetic energy storage and release of the two-phase winding inductance by opening and closing of the switch device and the additional power device to enable an LC oscillating circuit to be formed between the capacitive element and the winding inductance, generating a high-frequency alternating current, generating heat inside the lithium ion battery based on a joule law, and allowing to repeatedly operating the heating process to achieve continuous oscillation and continuous heat production until heating the lithium ion battery to a target temperature. The low-temperature heating control method for the lithium ion battery can be achieved by only adding a simple component to an inherent structure of an electric vehicle, and has the characteristics of good heating effect, high thermal efficiency and low usage cost.

The invention relates to a continuous-casting and continuous-rolling integrating device and a continuous-casting and continuous-rolling integrating process. An ejection roller way in an ejection roller way ejection area and a transition roller way are linearly and continuously jointed and a moveable baffle plate which can automatically lift is arranged at the joint; the ejection roller way and a heat conveying roller way are jointed through a casting blank separating device with a heat-preserving device; a set of blank-separating collecting device which can move bi-directionally is jointly used between a cooling bed and the transition roller way as well as between the transition roller way and the heat conveying roller way and can drive casting blanks to bi-directionally move between the cooling bed and the transition roller way; a heater is arranged on the heat conveying roller way; the tail end of the heat conveying roller way is jointed with a rolling machine. According to heat conveying and rolling requirements, the casting blanks are selected, separated and collected, according to casting blank temperature data which is detected in real time, the heating temperature and the heating time are automatically adjusted, the casting blanks are heated to the temperature meeting the rolling requirement and are fed into the rolling machine to be rolled, the metal yield can be increased, the continuous-casting blank quality can be improved, the energy consumption can be reduced, the utilization efficiency, the maintenance rate and the production efficiency of equipment are improved, and the investment cost and the operation cost are reduced.

The invention discloses a frequency control method, a frequency control device, a multi-split air conditioner and a storage medium. The frequency control method comprises the following steps that whenthe multi-split air conditioner is in the heating operation, a capability requirement identification value corresponding to each indoor unit in all indoor units in the running state, set temperatureand indoor environment temperature are acquired at interval preset time so as to determine the initial operating frequency of a compressor in each preset time; in each preset time, outdoor environmenttemperature is acquired; a target frequency correction coefficient within each preset time is determined according to the outdoor environment temperature; and the initial operation frequency within each preset time is corrected according to the target frequency correction coefficient so as to determine the target operating frequency of the compressor. According to the frequency control method, the frequency control device, the multi-split air conditioner and the storage medium, the problems that the accuracy of the tube temperature correction frequency of the middle of the indoor unit is lowand the needed time is too long are solved, and the effect of improving the heating capacity of the multi-split air conditioner is achieved.

The invention relates to an area-separated and functionalized defrosting system of a heat pump type air cooled air conditioner. The defrosting system comprises an indoor heat exchanger (3), a compressor (7), an outdoor heat exchanger, an electronic expansion valve (9), a stop valve (10) and an outdoor draught fan (5). Area-separated and functionalized establishment is carried out on the outdoor heat exchanger, and the whole outdoor heat exchanger is formed by two or more than two functionalized heat exchangers. An outdoor auxiliary heat exchanger plays roles in anti-frost, periodical defrosting, auxiliary heating and evaporation and the like in winter in the heating process, and an outdoor main heat exchanger plays a role in absorbing heat on the outdoor air side to carry out indoor heating. The air conditioner can achieve indoor continuous heating during a defrosting period. The area-separated and functionalized defrosting system can ensure normal running of the heat pump type air cooled air conditioner through adoption of an outdoor exchanger area-separated and functionalized auxiliary heating and evaporation mode even if the air conditioner is in a severe cold area with microthermal climate and can meet heating requirements of the air conditioners in a cold area in winter. Compared with a traditional defrosting method, the area-separated and functionalized defrosting system has the advantages of being remarkable in energy conservation, universality and self-adaptability.

The invention relates to a heating energy-saving control method and device based on human body induction. The heating energy-saving control device comprises an electrical adjusting valve and a human body induction intelligent control module. The human body induction intelligent control module comprises a data processing center, a human body induction probe, a temperature detection unit, a communication interface unit, a power unit, an output control circuit, an operation panel and an infrared communication module, wherein the human body induction probe, the temperature detection unit, the communication interface unit, the power unit, the output control circuit, the operation panel and the infrared communication module are connected with the data processing center. The output control circuit is connected with the electrical adjusting valve, the electrical adjusting valve is connected with a switch end of a radiator, and the operation panel is a radio frequency remote control terminal and is in real-time communication with the data processing center through an infrared wireless technology. According to the heating energy-saving control method and device based on human body induction, the behavior rule of people can be counted, the heating demands of people at different moments can be analyzed, and accordingly a domestic heating system can be controlled.

The invention discloses a source-load-storage coordinated scheduling method for improving new energy consumption. The method comprises the steps of S1, aggregating a thermal power plant, a new energypower plant, user loads and energy storage equipment into a source-load-storage scheduling system, and obtaining a new energy output curve, a heat utilization load curve and a power utilization load curve of the system; S2, establishing a source-load-storage coordinated scheduling model with the objective of maximizing new energy consumption quantity and minimizing the system operation cost; and S3, solving the source-load-storage coordinated scheduling model through utilization of improved multi-objective particle swarm optimization, and carrying out computing to obtain the source-load-storage coordinated scheduling method. The method has the advantages of simple realization method and flexible application. Schedulable resources such as power equipment, the user loads and the energy storage equipment in the system can be utilized rationally. The new energy consumption is facilitated, and moreover, operation cost of the system is reduced.

The invention relates to the technical field of steam turbines, in particular to a dual-branch heat supply system of a power-heat co-generation steam turbine. The dual-branch heat supply system of the power-heat co-generation steam turbine comprises a high-pressure cylinder, an intermediate-pressure cylinder, a low-pressure cylinder and a reheater. A steam vent of the high-pressure cylinder communicates with an inlet of the reheater through a cold reheat steam pipeline. An outlet of the reheater communicates with a steam inlet of the intermediate-pressure cylinder through a heat reheat steam pipeline. The steam inlet of the intermediate-pressure cylinder is provided with a reheat steam inlet valve set. A first cold section steam extraction branch and a second cold section steam extraction branch which are connected in parallel are connected to the cold reheat steam pipeline. The first cold section steam extraction branch communicates with a first heat supply network and is provided with a first cold section steam extraction fast-closing adjusting valve. The second cold section steam extraction branch communicates with a second heat supply network and is provided with a second cold section steam extraction fast-closing adjusting valve. Through the two cold section steam extraction branches, steam of different parameters can be obtained through extraction and is introduced into the two heat supply networks with the steam extraction demand parameters matched with the parameters of the steam correspondingly, and simultaneous heat supply to the two heat supply networks is achieved.

The invention discloses a heating device for a Hopkinson pressure bar test, which comprises a movable supporting platform, a tubular heating furnace and an electric control box. The tubular heating furnace is mounted on a sliding plate of the movable supporting platform. Two groups of sliding rails and a plurality of fixed sliding beads are arranged on the upper surface of the sliding plate. Two alundum tubes are symmetrically sleeved at two ends of a heat-resistant steel tube. Heat-resistant bricks are respectively built around the external surfaces of the joints of the two alundum tubes and the heat-resistant steel tube. The heat-resistant bricks are provided with through holes for mounting silicon carbide rods. Insulating linings are sleeved on the external surfaces of a hearth and the heat-resistant bricks. Positions where inner cavities of the insulating linings correspond to the through holes on the heat-resistant bricks are all provided with mounting holes of the silicon carbide rods. Aluminum silicate fibrous carpets package the external surfaces of the insulating linings. A furnace shell is packaged on the external surfaces of the aluminum silicate fibrous carpets and the insulating linings. A base is fixed on the furnace shell. Two heat-insulating covers are respectively mounted in the hearth from hearths at two ends, and end cover bolts are fixed at two ends of the furnace shell. In the invention, the tubular heating furnace can move in the up-and-down direction, the leftward-rightward direction and the frontward-backward direction of the platform, and the heating device has the characteristics of good heat-insulating performance and convenience in repair.

A novel integrated hard rolling shutter is composed of an off-bridge aluminum window, a movable louver rolling curtain window and a yarn curtain. The hard rolling shutter is integrally designed. A rolling curtain box of the movable louver rolling curtain window is fixedly arranged above an upper frame of a window body of the off-bridge aluminum window, and guide rails and the frame are integrally formed. Two guide rails are arranged between a left frame and a right frame, the first guide rail is a running rail of a movable louver rolling curtain of the movable louver rolling curtain window, and the second guide rail is a running rail of the yarn curtain. The novel integrated hard rolling shutter is integrally designed and manufactured, components are highly compatible, and the off-bridge aluminum window, the movable louver rolling curtain window and the yarn curtain are seamlessly integrated. The problem that sash windows are poor in tightness is solved, and heat conduction between the inside and the outside is isolated through an off-bridge section bar. The novel integrated hard rolling shutter can shield sunshine and insulate heat and is ventilating and bright in summer, and can meet the requirement for warming in winter, thereby improving the thermal insulation property of an outer window, reducing energy loss, enabling a living environment to be warm in winter and cool in summer, saving energy, protecting the environment and being healthy and safe.

The invention relates to a hot water heating device having a solar energy and off-peak electricity heating energy storage function and belongs to the energy utilization field. The device comprises an off-peak electricity heating energy storage device, a constant-voltage energy storage water tank, a solar heat collecting device, a wind driven generator and a controller; the constant-voltage energy storage water tank is arranged above the off-peak electricity heating energy storage device; the constant-voltage energy storage water tank is connected with the off-peak electricity heating energy storage device, the solar heat collecting device and the heating system of a user system by use of a thermal insulation pipeline and a valve; the controller is connected with the constant-voltage energy storage water tank and the off-peak electricity heating energy storage device, respectively; the controller controls heat supply to the user system. The wind driven generator is connected with an electric heater in the constant-voltage energy storage water tank; the electric energy of the wind driven generator is supplied to the electric heater in the constant-voltage energy storage water tank, and the electric heater directly heats water in the constant-voltage energy storage water tank. The hot water heating device having the solar energy and off-peak electricity heating energy storage function is energy-saving, environmental friendly, low in use cost, reasonable in energy utilization, and convenient to use and manage.

The invention discloses a heat-pump type electric automobile air conditioning system taking CO2 as a refrigerant and a working method thereof. The heat-pump type electric automobile air conditioning system taking CO2 as the refrigerant comprises a carbon dioxide refrigeration compressor, a gas-liquid separator, an automobile exterior cooler, an automobile exterior cooler fan, a heat regenerator, a plate heat exchanger, a water pump, an expansion tank, a heater core, an evaporator, an air blower, a two-position three-way valve, an electronic expansion valve a, an electronic expansion valve b, a solenoid valve a, a solenoid valve b, a solenoid valve c, a solenoid valve d, an air door, an automobile interior air flow passage a, an automobile interior air flow passage b and an automobile interior air flow passage c. According to the heat-pump type electric automobile air conditioning system taking CO2 as the refrigerant, a disadvantage caused by taking R134a as a refrigerant in the traditional heat-pump type automobile air conditioner is eliminated and the heating ability of the air conditioning system in winter is improved.

The invention discloses a three-in-one solar heat pump unit, which can produce domestic hot water and can refrigerate and heat at the same time. The three-in-one heat pump unit comprises basic refrigeration circulation and heating circulation, and also comprises a first heat exchanger and a second heat exchanger, wherein the first heat exchanger is a coil-type heat exchanger capable of using air energy; the second heat exchanger is a plate-type heat exchanger which is provided with a heat source by hot water in a solar water tank; the hot water in the solar water tank is connected to a domestic hot water tank; and the refrigeration circulation and the heating circulation are also connected to the domestic hot water tank. The unit can supply the domestic hot water, refrigerate or heat according to the change of four seasons, fully use renewable energy sources such as solar energy and the air energy, and use the condensation heat of the unit so as to fulfill the aim of environmental friendliness, also can be applied to situations with industrial waste hot water emission, produces the domestic hot water, recycles waste heat and reduces pollution to atmospheric environment at the same time.

The invention relates to a vehicle thermal management system, a control method thereof and a vehicle. The vehicle heat management system comprises a battery and electric drive heat management system and an engine and warm air core body heat management system. The air conditioning system exchanges heat with the battery and electric drive heat management system through the heat exchanger; the engineand warm air core body heat management system comprises an engine cooling liquid flow path, a heating flow path and a first four-way valve. The engine cooling liquid flow path, the heating flow pathand the flow path where the battery and the battery in the electric drive heat management system are located are connected or disconnected through the first four-way valve, so that heat transfer amongthe cooling liquid flow path, the heating flow path and the flow path where the battery in the electric drive heat management system is located is achieved.

A semi-conducting thick ceramic film as heat generating material is prepared through proportional mixing function phase with adhesive phase, adding organic carrier to prepare slurry, preparing electrothermal heat-generating material, coating it on substrate and high-temp sintering. Said function phase is composed of one of Ge, Si and C or more single elements and multiple oxides, which play the role of characteristic modifiers.

The invention discloses a heat pump type heat management system of an electric automobile. The system comprises a refrigerant loop, a warm air cooling liquid loop, a battery cooling liquid loop and a motor cooling liquid loop. The refrigerant loop exchanges heat with the warm air cooling liquid loop through a water-cooled condenser, the refrigerant loop exchanges heat with the warm air cooling liquid loop through a water-cooled condenser, the refrigerant loop and the battery cooling liquid loop exchange heat through a battery cooling heat exchanger, and the motor cooling liquid loop and the warm air cooling liquid loop are communicated, so that a loop can be formed between the motor cooling liquid loop and the warm air cooling liquid loop, and a loop can be formed among the warm air cooling liquid loop, the battery cooling liquid loop and the motor cooling liquid loop. According to the heat management requirements of a battery, a motor and a passenger compartment, systematic and integrated management of heat of the whole vehicle can be achieved by adjusting the working states of the water pumps and the stop valves.

The invention discloses a heating management system for a hybrid vehicle. The heating management system comprises an engine heating large cycle and an electric heating small cycle. The engine heating large cycle is used for heating a water way, and the water way forms a circulating loop sequentially through an engine circulating water pump, a thermostat, an inlet B of a three-way valve, an outlet C of the three-way valve, a passing water PTC (positive temperature coefficient) heater and a cab heating unit; the electric heating small cycle is used for heating the water way; the water way forms another circulating loop sequentially through a PTC water pump, an inlet A of the three-way valve, the outlet C of the three-way valve, the passing water PTC heater and the cab heating unit. The heating management system has the advantages that in a hybrid mode (in which an engine runs), a passenger compartment is heated by high-temperature cooling water flowing out of the engine and passing the passing water PTC heater, the demand of passengers for heating is met, a defrosting function and a defogging function are achieved, energy consumption is lowered, all-electric mode driving range is widened, the whole hybrid vehicle is more economical, and the environmental friendliness of the hybrid vehicle is better embodied.

The invention relates to an electric heating system and a control method thereof. The electric heating system comprises an electric heat storage boiler unit, a water circulation unit, a heat pump main body unit, a climate compensator and a control unit, wherein the electric heat storage boiler unit is connected with the water circulation unit connected with a heat supply zone through an inner circulation pipe of a first heat exchange unit; the heat pump main body unit is connected with the water circulation unit connected with the heat supply zone through an inner circulation pipe of a second heat exchange unit; and the climate compensator and the control unit are separately connected with the electric heat storage boiler unit, the heat pump main body unit and the water circulation unit. According to the technical scheme provided by the invention, when electricity usage is at a low trough, circulating water can be independently or simultaneously heated by the heat pump and the electric heat storage boiler, so that the problem that the temperature rise of the heat pump is limited is solved, the heat utilizing efficiency is increased, and the energy source is saved; and at the same time, electric energy is converted to heat energy and stored in a heat storing body by the electric heat storage boiler, and when electricity usage is at a high peak, the heat can be released by the electric heat storage boiler through the heat storing body to heat the circulating water and realize indoor heating, so that the electricity usage pressure of a power grid is relieved, and electricity fees are saved for a user.

The invention belongs to the ground heating water mixing device technical field. The three-way electric heat execution valve of the invention comprises a valve body, a valve core assembly and an electric heat power assembly. The valve body is provided with a water inlet, a by-pass port, a water outlet and a mounting port; the valve core assembly comprises a valve core; the electric heat power assembly can push the valve core to move; the valve body is also provided with a main through port communicating the water inlet and the water outlet and an auxiliary through port communicating the water inlet and the by-pass port; the valve core comprises a valve core bar, a limiting member arranged on the valve core bar, a main seal plate capable of blocking the main through port in the valve body, and an auxiliary seal plate capable of blocking the auxiliary through port in the valve body. The ground heating water mixing device provided by the invention adopts the three-way electric heat execution valve capable of conveniently controlling the water discharge flow rate and the backwater flow rate. The temperature control valve has the advantages of convenient control of hot water return and discharge flow rate, quicker response to temperature control and higher temperature control accuracy. The ground heating water mixing device has the advantages of capability of making full use of hot water heat energy, quicker response to temperature control and higher temperature control accuracy.

The invention discloses a multi-online system and a low-temperature startup control method and device of the multi-online system. The multi-online system comprises an outdoor unit and at least one indoor unit, wherein the outdoor unit is connected with the indoor units through tubing, and the outdoor unit comprises a compressor. The low-temperature startup control method comprises the following steps that when the multi-online system is controlled to conduct low-temperature startup, the maximum length of tubing between the outdoor unit and at least one indoor unit is acquired; the compressor is controlled to work for N periods of preset time according to N preset frequencies in sequence; and after the compressor works for the Nth period of preset time according to the Nth preset frequency,the frequency boost speed is determined according to the maximum length of tubing, and the operation frequency of the compressor is controlled to be increased to the target operation frequency from the Nth preset frequency at the frequency boost speed, wherein the N is a positive integer. As a result, the oil quantity of the compressor can be guaranteed in the low-temperature startup process, thecompressor is prevented from lacking oil, the requirement of heating on the indoor side is met, and the user experience is improved.

The invention relates to a multi-medium heat storage type warming water tank, which is a warming water tank for storing heat by using media such as electromagnetic oven heated water and the like, infusing hot water by using a manual or electric water feeding device and achieving heat storage and warming by using electricity, fuel combustion, hot water of a solar water heater and geothermal water. The warming water tank comprises a warming panel, a warming cavity, a plastic or metal plate, a cotton cloth layer and a water cavity, wherein the water cavity is provided with a water inlet pipe, a water outlet pipe, a stainless iron warming plate and a special bearing rack; a heat insulation layer and a plastic (or metal) protective shell are arranged outside the water cavity; the warming water tank for hands and feet of a single person is provided with a detachable heat insulation base; a water passage of the warming water tank for feet of multiple persons is provided with a three-way pipe and a heat resistant pipe connected with a water pipe of the water cavity; and the warming water tank mainly applied to warming of households and individuals and warming of feet of multiple persons also can supply hot water and shower, the heating transfusion device type warming water tank can be used for warming, and the manual or electric water feeding device is used for feeding water to the water tank. The warming water tank has the advantages of convenient operation, safety, environmental protection, energy conservation, sanitation, warming comfortableness, duration, high utilization of heat efficiency, wide available energy and durability.

The invention relates to a method for chlorinating and extracting gold in arsenic-containing sulphuric acid slag and comprehensively utilizing gas heat. The method comprises the following specific steps of (1) acid leaching and arsenic sulfide precipitation; (2) drying, wet-grinding, pelletizing, drying and chloridizing volatilization; (3) primary quench cooling, heat exchanging, secondary quenching and electrostatic precipitation; and (4) dust scrubbing, chloride leaching of gold, gold reducing, silver extraction by ammonia leaching and silver reducing. An acid leaching and arsenic precipitation technology is adopted, and arsenic is first separated from raw materials, so that the influence of arsenic on a follow-up system is eliminated. The arsenic sulfide precipitation technology realizes enrichment of arsenic in water and recycling of water. The primary quench cooling technology is adopted, so that the temperature of dust-laden gas is higher than that of a softening point of dust, and relatively high liquidity is obtained. An iron powder replacement technology is adopted, so that gold and silver enriched in recycling process water are recycled. Lead and zinc in the process water are recycled through alkaline lead and zinc precipitation, so that the problem that a pipeline is blocked with soluble salt is solved.

A process for preparing high quality diesel oil from poor-qualiry fraction oil includes such steps as hydrorefining, hydro-pour-depressing and arylhydrocarbon saturation. Its advantages are high hexadecame value, low pour point, and low contents of S and arylhydrocarbon.

The invention relates to an intelligent control method of convection heating of multiple electromagnetic heating units and an electromagnetic heating device, and discloses a control method of the electromagnetic heating device. The electromagnetic heating device comprises two or more resonance coils and an option switch. The method comprises the steps that S1, the electromagnetic heating device is started to heat a cooker, and timekeeping begins; S2, when the kept time is longer than or equal to the preset time, the option switch is controlled to carry out switching to change the resonance coil working currently. According to the control method, the heating time is judged to control coil switching so as to achieve alternate heating, so that the effect of convection heating is achieved, the turning amplitude of food is improved in the food heating process, the heating uniformity is improved, and the food is effectively prevented from being burnt. In addition, the control method is simple and easy to implement. The invention further discloses the electromagnetic heating device.

The invention discloses a combined heat and power generation heat supply load prediction method based on multi-factor influences and a heat supply system, and belongs to the technical field of centralized heat supply. The heat supply system comprises a thermoelectric unit, a heat supply network initial station, a heat storage system, a heat supply network circulating water pump, a heat storage circulating pump, a heat release circulating pump, an electric adjusting valve, an Internet of Things flow meter, an Internet of Things temperature instrument, an Internet of Things pressure instrument and q heat supply stations, wherein q is larger than or equal to 2. According to the combined heat and power generation heat supply load prediction method based on the multi-factor influences and the heat supply system, influences of factors such as meteorological parameters, pipe network characteristics and building characteristics are comprehensively considered, so that a long-term heat load prediction model of a certain day in the future and a short-term heat load prediction model of real-time heat supply load adjustment are established, on one hand, the operation condition of a combined heat and power generation unit is reasonably arranged, and efficient adjustment of electric and heat loads of a heat source side unit is achieved; and on the other hand, accurate operation adjustment ofheat supply of the heat supply network side is achieved, and the heating requirements of heat users are effectively met, so that the problem of mismatching of electric and heat loads of the heat source side and the heat supply network side of the heat supply system is effectively solved, and accurate heat supply of the heat supply network side and efficient peak regulation of the heat source sideare achieved.

The invention discloses a lifting type office table. The lifting type office table comprises a table board, a left supporting plate, a right supporting plate, a rear supporting plate and a lifting device, wherein the left supporting plate, the right supporting plate and the rear supporting plate are fixedly connected with the lower surface of the table board. The lifting device comprises a horizontal lifting plate corresponding to a first through hole in the middle of the table board, a pair of lifting mechanisms and a rotation mechanism; any lifting mechanism comprises a vertical screw rod, asleeve sleeving the screw rod, a fixed rod, a gear disc and a first rotating shaft; the rotating mechanism comprises a first bevel gear, a second rotating shaft, a third rotating shaft, a second bevel gear, a third bevel gear, a fourth bevel gear and a pedal, and the first rotating shaft on the right side is fixedly sleeved with the first bevel gear. The height of the lifting plate can be quickly, safely and stably adjusted, the manufacturing cost is low, the working efficiency is high, and the office table is suitable for being widely popularized in the market.

The invention relates to a distributed fuel gas type complementary solar energy utilization combined cooling heating and power system. The system comprises a distributed fuel gas system, a solar photovoltaic photo-thermal system, a household solar water heating system and a lithium bromide absorption type refrigerating system, wherein the solar photovoltaic photo-thermal system and the household solar water heating system are connected with inlet water of a heat storage water tank, the heat storage water tank is connected with a cold water inlet of a heat exchanger, a hot water outlet of the heat exchanger is connected with a lithium bromide refrigerator, and a hot air inlet of the heat exchanger is connected with a fume exhaust pipeline of a waste heat boiler in the distributed fuel gas system. Hot water generated by a photo-thermal system in the solar photovoltaic photo-thermal system and the household solar water heating system flows into the heat storage water tank and is stored inthe heat storage water tank, and the hot water flows into the heat exchanger and is heated by exhaust fume of the distributed fuel gas waste heat boiler to reach the heat source temperature of the lithium bromide refrigerator, so that refrigeration is realized; and the system makes full use of heat generated by the system, the electric quantity generated by the system can be used by the system orconnected to a grid, efficient gradient utilization of clean energy is truly realized, and the system has a very strong utilization prospect.

The invention particularly relates to an air conditioner defrosting device, an air conditioner defrosting control method and a system and an air conditioner. Multiple parallel outdoor heat exchangers are provided; one or more outdoor heat exchangers can be selected for heating according to application environments of the air conditioner and user demands; when the outdoor heat exchangers need to defrost, the outdoor heat exchangers are defrosted by a hot air bypassing mode, and the other outdoor heat exchangers without needing defrosting are adopted to continuously heat, so that the indoor continuous heating in the defrosting process is realized, and the indoor comfort is prominently improved; and meanwhile, low-temperature gas after defrosting cooling in a bypass pipeline dose not directly enter a gas return port of a compressor, but enters a refrigerant circulating loop after being throttled by an electronic throttling part, so that the great change of the intake / exhaust pressure of the compressor cannot be caused, and the operation reliability of the compressor is improved.

The invention discloses an automobile heat pump system and a control method. The automobile heat pump system comprises a warm air core body and an automobile equipment refrigeration unit. The automobile equipment refrigeration unit comprises a first compressor, a first condenser, a first evaporator and an automobile equipment radiator set. A heat medium of the warm air core body exchanges heat with a refrigerant in the first condenser to be heated and then flows back to the warm air core body; cold end air of the warm air core body is used for heating air of a passenger compartment; a refrigerant exchanges heat and is cooled in the first condenser and then flows into the cold end of the first evaporator; a cold medium of the automobile equipment radiator set enters the hot end of the firstevaporator, exchanges heat with a refrigerant for cooling and then flows back to the automobile equipment radiator set to be used for heat dissipation of automobile equipment. A refrigerant exchangesheat in the first evaporator, is heated and then flows into an inlet of the first compressor. Motor waste heat, battery waste heat and external air heat are utilized to the maximum extent, and an automobile air conditioner does not need to switch heating through a refrigerant loop; the development cost and the automobile heating power consumption are reduced.

The invention discloses a control method of an air conditioner. The control method of the air conditioner comprises the following steps of obtaining the outdoor temperature in real time or regularly when the air conditioner is in a heating mode; obtaining the current electric current of a compressor in real time or regularly when the outdoor temperature meets a low temperature heating condition; and adjusting the running frequency of the compressor according to the current electric current to increase the heating capacity of the air conditioner. The invention further discloses the air conditioner and computer readable storage media. The method is capable of guaranteeing the low temperature heating effect of the air conditioner.