95results about How to "Increase the COP value" patented technology

The invention provides a control method for increasing low-temperature heating heat of a varied-frequency air conditioner. After an outdoor electronic control chip of the air conditioner receives an instruction to start an indoor low-temperature heating mode, the method comprises the following steps: step 1: the outdoor electronic control chip responses outdoor ambient temperature and environmentrelative humidity so that the air conditioner can enters into a corresponding low-temperature heating running state; and step 2: after the air conditioner enters into a low-temperature heating running state, a compressor runs for a corresponding heating time according to a designated heating frequency, then the air conditioner enters into a defrosting operation and an outdoor heat exchanger of the air conditioner can be defrosted through reversing a four-way valve in the air conditioner, wherein before the defrosting operation in the step 2 and in the entire process of defrosting operation, the operation frequency and time of the compressor can be changed on condition that the compressor of the air conditioner keeps running all the time. The method provided by the invention can response the changes of ambient temperature and relative humidity and can effectively improve low-temperature heating heat of the varied-frequency air conditioner.

The invention discloses an air-water dual heat source heat pump water heater, which comprises a main machine, a heat-storage and preservation water tank, a controller, an environment temperature controller, a coil temperature sensor, a water tank temperature sensor, a high-water-level switch, a low-water-level switch, a target-flow switch, a water inflow electromagnetic valve, a circulating water pump, a compressor, a motor, an electronic expansion valve, a double-pipe evaporator circuit electromagnetic valve, a fin tube evaporator circuit electromagnetic valve, a circulating hot water pipe, a tube-in-tube condenser and a four-way valve, wherein the D port of the four-way valve is connected with the exhaust pipe of the compressor through a high-pressure switch, the C port of the four-way valve is connected with the upper part of a tube-in-tube condenser, the S port of the four-way valve is connected with the air intake of the compressor through a vapor liquid separator and a low-pressure switch, the E port of the four-way valve is connected with the upper part of a double-pipe evaporator and the upper part of a fin tube evaporator, and the tube-in-tube condenser forms a water cooled heat exchanger through a liquid container, a filter, the electronic expansion valve, an axial flow fan blade, a motor and the double-tube evaporator and forms a wind cooled heat exchanger through a fin tube evaporator. The water heater can be used for 24 hours each day all the year around in the north of China.

The invention discloses an air source heat pump water heater with a double-water tank system. The water heater comprises a main machine, a heating water tank, a heat-preservation water tank and a controller, wherein the heating water tank is parallelly connected with a water supplementing system consisting of a water meter, a first electromagnetic valve, a first ball valve and a first check valve; the heat-preservation water tank is connected with a water supply system consisting of a fourth electromagnetic valve, a second ball valve and a third ball valve; and the main machine forms a hot water circulating system together with a second electromagnetic valve, a third electromagnetic valve, the fourth electromagnetic valve, a fifth electromagnetic valve and a second check valve. The heating water tank, a first high water level switch, a first low water level switch, a heating water tank temperature sensor, the heat-preservation water tank, a second high water level switch, a second low water level switch and a heat-preservation water tank sensor form a water storage system. A fourth ball valve, a fifth ball valve, a first butterfly valve, a second butterfly valve, a second circulating water pump and a target flow switch form a cleaning system. The water heater can reduce working temperature spots and power consumption of a machine set and improve the COP value of the machine set effectively.

The invention provides a split type air conditioner and a condensate water recycling and energy saving method for the same. The split type air conditioner and the condensate water recycling and energy saving method have the advantages that air which flows into an air inlet of an indoor unit of the air conditioner is pre-cooled by the aid of first heat exchange on condensate water, so that refrigerating energy consumption of an evaporator in the indoor unit of the air conditioner can be reduced; radiating fins of a condenser in an outdoor unit of the air conditioner can be cooled by the aid of second heat exchange on the condensate water and evaporation heat absorption of the condensate water, so that the condenser radiating efficiency can be improved, consumption of refrigerants can be reduced, and a COP (coefficient of performance) value of an integral refrigerating system of the split type air conditioner can be increased; the condensate water is quickly evaporated in a second heat exchange procedure, so that liquid condensate water finally drained by the split type air conditioner can be greatly reduced, frequent inconvenience such as outdoor overhead water dripping and slippery roads due to a large quantity of drained condensate water can be prevented, problems of low condensate water utilization rate and voluntary condensate water drainage of split type air conditioners in the prior art can be solved, the refrigerating efficiency of the split type air conditioner can be improved, and purposes of saving the energy and protecting environments can be achieved.

The invention relates to an energy-saving apparatus of air swept type central air-conditioner, especially a novel energy self-supplying numerical control energy-saving apparatus using air swept type central air-conditioner draught fan air exhausting wind power generation. The apparatus comprises a spray water cooling device, a digital control box, and an air injection temperature elevating apparatus, power self-generating apparatus, a water treatment and conveying apparatus, the air injection temperature elevating apparatus arranges an air injection showerhead in front of the condenser heat radiation fins of the air swept type central air-conditioning units, the air injection showerhead is mounted on the air supply pipe in series, the spray nozzle of the air injection showerhead faces to condenser heat radiation fins, the wind-driven generator is mounted on the draught fan air outlet on the top of the air swept type central air-conditioning units by a wind-driven generator bracket. The invention can supply self-generating power to generate cooling water to reduce temperature of the condenser heat radiation fins in condition of consuming little water and not increasing any power consumption, and can supply self-generating power to generate hot wind to increase temperature of the condenser heat radiation fins in winter, thereby achieving economy of electric power consumption.

The invention provides an internal-melt ice storage air-conditioning system and an operating method of the internal-melt ice storage air-conditioning system. The internal-melt ice storage air-conditioning system comprises a cooling tower, a single-working-condition ice-making refrigerating machine, an ice storage tank, a heat exchanger, a refrigerating unit, end equipment, a valve and corresponding circulating pumps. The single-working-condition ice-making refrigerating machine replaces a low-efficiency double-working-condition refrigerating machine in an existing ice storage air-conditioning system and only takes charge of ice-making cold storage at the electricity valley period at night, and the high-efficiency refrigerating unit and the ice storage tank cooperatively undertake daytime loads, so that the operating efficiency of a daytime cold supply system is improved, the distribution power of a refrigerating system is decreased, and the operating cost of the cold supply system is lowered. In addition, the internal-melt ice storage air-conditioning system has five operating modes, control is easier and more reliable, and greater economic benefits and social benefits are achieved.

The invention relates to a refrigerating engine oil composition and an application of the refrigerating engine oil composition. One aim of the invention is to provide a refrigerating engine oil composition which has good compatibility with hydrocarbon refrigerants, is high in flash point and low in viscosity, can be used for furthest increasing the COP (coefficient of performance) value of a compressor, and has excellent thermal stability and relatively low cost. The other aim of the invention is to provide an application of the refrigerating engine oil composition used as a lubricating agent in a refrigeration compressor which uses isobutane, propane or a mixture of isobutane and propane as a refrigerant. The refrigerating engine oil composition consists of the following components in percentage by weight: 96.5-99.5% of base oil and 0.5-3.5% of a lubricating oil additive, wherein by taking the weight of the base oil as 100%, the base oil comprises the following components in percentage by weight: 20-79% of alkylated aromatic hydrocarbon and 21-80% of an alkane mixture; by taking the total weight of the composition as 100%, the lubricating oil additive comprises the following components in percentage by weight: not more than 3% of an extreme pressure anti-wear additive, 0-3% of an antioxidant, 0-3% of the lubricating agent, 0-0.8% of a metal deactivating agent and 0-0.02% of an anti-foaming agent.

The invention discloses a freezing, thawing and refrigerating larder capable of reusing energy, comprising a box body, a liquid storage bucket, a filter, a capillary, a compressor and a condenser, wherein the compressor and the condenser are arranged out of the box body; the box body is composed of a freezing chamber and a thawing chamber; and the freezing chamber is provided with an evaporation tube b, and the thawing chamber is provided with an evaporation tube a and a condensation tube. The above components are connected with the inlets and the outlets of three three-way magnetic valves a, b and c, and the three-way magnetic valves a, b and c are connected with a temperature controller arranged in a thawing box. The invention realizes the conversion of thawing and refrigerating functions of the thawing chamber by switching the three-way magnetic valves, and the freezing chamber normally works; when the thawing function is started, heat energy emitted from the condensation tube in the thawing chamber is used for thawing frozen food; and after food is thawed and the temperature in the thawing chamber reaches another set temperature value of the temperature controller, the invention automatically converts into the refrigerating state to prevent food from deteriorating at higher temperature.

The invention discloses an air conditioning system. The air conditioning system comprises a compressor, a first four-way reversing valve, an outdoor unit, a second four-way reversing valve, an ejector, a gas-liquid separator, a throttling valve and an indoor unit. The four pipe openings of the first four-way reversing valve are sequentially connected with one end of the outdoor unit, the exhaust port of the compressor, one end of the indoor unit and the ejection flow inlet of the ejector. The four pipe openings of the second four-way reversing valve are sequentially connected with the other end of the indoor unit, the outlet of the throttling valve, the other end of the outdoor unit and the work flow inlet of the ejector. The inlet of the gas-liquid separator is connected with the outlet of the ejector, the first outlet of the gas-liquid separator is connected with the air suction port of the compressor, and the second outlet of the gas-liquid separator is connected with the inlet of the throttling valve. Under a heating or refrigerating mode, refrigerating fluid can flow through the ejector, and therefore the COP value of the system is increased. The air conditioning system is good in heat exchange performance and easy to operate and realize, the error-tolerant rate of the system is increased, and the cost of the system is lowered.

The invention discloses an integrated system and method for multi-stage white-smoke-removing and purification of flue gas and waste heat recycling. The integrated system comprises a multi-stage absorbing tower, a primary absorbing liquid storage tank provided with an overflowing tube, a primary solution heat exchanger, a secondary solution external cycle heat exchanger, a secondary solution self-cycle heat exchanger and a secondary solution regeneration device; the multi-stage absorbing tower has more than two stages, is divided into a primary absorbing region and a secondary absorbing regionfrom bottom to top, and is provided with a wet flue gas inlet and a dry flue gas outlet; and the integrated system is further provided with a primary solution cycle loop, a secondary solution externalcycle loop, a secondary solution self-cycle loop and a flow distributing device, and by the flow distributing device, the flow meter of fluid in the secondary solution self-cycle loop and fluid in the secondary solution external cycle loop is (3-5): 1. By the integrated system and method, heat is utilized reasonably, COP value is high, consumption of an absorber is low, the investment cost of thesystem is also low, the pipe blockage and washing problem is greatly relieved, and the system runs continuously and stably.

The invention discloses a solar phase-change heat-storage heat source tower heat pump system (see attached drawing for schematic diagram). The system mainly comprises an improved closed heat source tower (1), a solution expansion tank (2), a phase-change heat storage tank (3), a constant pressure device (4), an ethylene glycol circulating pump (5), a solar heat-collecting panel (6), a load pump (7), a heat source tower water pump (8), a heat source tower heat pump set (9) and an air conditioner end (10), which are communicated through water pipes, and valves are installed for regulation; and the phase-change heat storage tank (3) is in series connected with the improved closed heat source tower (1). When the system is started, the solar heat collector absorbs solar energy, and the energy is stored in the phase-change heat storage tank; the antifreezing solution first enters the heat source tower to be in indirect heat exchange with air (the spray-antifrosting system is stared when necessary), then enters the solar phase-change heat storage tank to be continued to conduct heat exchange, and finally enters the heat pump set for heating after the temperature further increases; and the system can solve the problem of low COP value of the heat pump set in winter in the improved closed heat source tower heat pump system, reduce the operating energy consumption and the operating cost of the heat pump set, and is energy-saving and environment-friendly.

The invention relates to a multi-stage heat exchanger. A liquid-collecting inlet tube and a liquid-collecting outlet tube are arranged on two sides of a cylinder, the beginning end of the liquid-collecting inlet tube is a liquid inlet while the tail end of the liquid-collecting outlet tube is a liquid outlet, and a baffle plate is connected in the middle of the liquid-collecting inlet tube and the liquid-collecting outlet tube. The multi-stage heat exchanger is mainly technically characterized in that a separator plate divides the cylinder into a plurality of cavities, and the opening end of a tube bundle is divided into a plurality of pairs of refrigerant inlets and refrigerant outlets by a seal head to form a separate refrigerant in-out system. The invention solves the defects of continuous improvement of single circuit cooling water along with the traveling of the course, gradual reduction of heat exchange efficiency, high manufacture cost, low heat exchange efficiency of a dry-steaming type heat exchanger, high power consumption, large input of materials and the like. The invention has the advantages of high heat exchange efficiency, energy-saving, reduction of product cost and operation cost as well as larger temperature difference of refrigerant temperature, thereby a favorable heat exchange condition is formed.

The invention provides a compressor dispenser. The compressor dispenser comprises a cylinder and a heat exchange coil pipe; the cylinder is a closed cavity; an inlet pipe and an outlet pipe are arranged on the cylinder; the heat exchange coil pipe is arranged in the cylinder, and an inlet end and an outlet end of the heat exchange coil both extend out of the cylinder; the inlet pipe and the outlet pipe form a first flowing channel; the heat exchange coil pipe serves as a second flowing channel; and the first flowing channel and the second flowing channel are respectively independent. The invention further provides a compressor and an air conditioning system. In the compressor dispenser, the compressor and the air conditioning system, the compressor dispenser synchronously has the functions of a subcooler, a heat regenerator and a gas-liquid separator, so that the refrigerating efficiency of the compressor is improved, the dryness of refrigerants entering the compressor is increased, and the hydraulic shock risk caused by liquid taking due to inspiration of the compressor is reduced; and meanwhile, the refrigerants discharged by a condenser are further cooled, the supercooling degree of the air conditioning system is improved, and the COP value of the air conditioning system is increased.

A cooling device for a condenser of a central air conditioning system comprise a phase change generator, an air pipe, a thermal recoverer and a liquid pipe, wherein one end of the air pipe is connected at the top of the phase change generator, the other end of the air pipe is connected with the thermal recoverer, one end of the liquid pipe is connected at the bottom of the thermal recoverer, the other end of the liquid pipe is connected with the lower portion of the phase change generator, one end of the air pipe connected with the thermal recoverer is connected at the upper portion of the thermal recoverer, a heat exchange coil is positioned in the thermal recoverer, one end of the heat exchange coil is connected with a cold water inlet pipeline, the other end of the heat exchange coil is connected with a hot water outlet pipe, the condenser is positioned at the lower portion in the phase change generator, air-liquid phase change materials are filled in the phase change generator and submerges the condenser in liquid state, and phase change temperature of the air-gas phase change materials is 25 DEG C to 35 DEG C in standard atmospheric pressure. The cooling device for the condenser of the central air conditioning system is low in energy consumption and good in cooling effect.

The invention provides a configuration and adjusting method of a steam compressor in an application system of upgrading and heat supplying of exhausted steam of a thermal power generating unit steam turbine. The system comprises a steam compressor driving small steam turbine, two levels of steam compressors, two levels of thermal-system heaters, a lubricating oil system, a gland seal system, valves and pipe fittings, wherein the valves and the pipe fittings are used for connecting the steam compressor driving small steam turbine, the two levels of steam compressors, the two levels of thermal-system heaters, the lubricating oil system and the gland seal system. By adoption of the system, low-pressure and low-temperature exhausted steam of the steam turbine is compressed through the steam compressor by using little driving steam, the pressure and the temperature of the steam are increased so that the steam can serve as a heat source to heat heat-supply network circulating water for heat supply, and therefore, the purpose that the exhausted steam of the steam turbine is used is achieved. According to the changing characteristics of the heat supply quantity and the water supply parameters, and the steam compressor efficiency operating characteristics, the adjusting method is used for adjusting the rotary speed of the small steam turbine and the opening of an inlet baffle of the steam compressor to achieve adjustment of the compressed steam flow quantity and the outlet pressure. By adoption of the technology, adaptability to the heat supply condition is wide, and heat utilizing efficiency is high. Heat supply efficiency is not influenced by the generating unit electrical load and heat load.

The invention relates to a single-refrigeration water-source heat pump grain cooling unit, which comprises a unit case. The unit is characterized in that an air mixing box is mounted at the front end of the unit case; an return air connecting pipe is mounted at a first inlet end of the air mixing case; a second inlet end of the air mixing box serves as a fresh air inlet end; a filter is mounted at an outlet end of the air mixing box; the coarse filter is connected with an inlet end of a cooler; an outlet end of the cooler is connected with an inlet end of an air collecting pipe; an outlet end of the air collecting pipe is connected with an inlet of a fan; an outlet of the fan is connected with an air supply connecting pipe and port; a refrigerating system is mounted at the back end of the unit case and comprises a compressor and a water-cooled condenser; the water-cooled condenser is provided with a water inlet interface and a water outlet interface; and a refrigerant outlet of the cooler is connected with an inlet of the compressor; an outlet of the condenser is connected with an inlet of the water-cooled condenser; and a refrigerant outlet of the water-cooled condenser is connected with a refrigerant inlet of the cooler. The single-refrigeration water-source heat pump grain cooling unit is energy-saving and efficient and stable in operation, and has the beneficial effects that the cost is lowered, continuous operation can be achieved, and the service efficiency is improved.

The invention discloses a multifunctional solar-assisted air-conditioning system. The multifunctional solar-assisted air-conditioning system comprises two parts of a refrigerant circulating system and a water circulating system, wherein, the refrigerant circulating system comprises a compressor, an indoor heat exchanger, a refrigerant-water heat exchanger, an outdoor heat exchanger, a high pressure liquid storage barrel, a throttling device, a three-way valve, an one-way valve and a gas-liquid separator which are sequentially connected; and the water circulating system comprises a solar heat collection device, a water tank, a water pump and the refrigerant-water heat exchanger which are sequentially connected. The multifunctional solar-assisted air-conditioning system of the invention can high efficiently realize the functions of a cool-warm air conditioner and a water heater, thereby having very strong energy-saving property, practicality, economy and broad market prospect. The multifunctional solar-assisted air-conditioning system is particularly applicable to the occasions which are rich in solar energy resources and simultaneously need the cool-warm air conditioner and the supply of hot water.

The invention provides a heating heat pump system used in an ultralow-temperature environment. The heating heat pump system comprises a main circulation loop which is composed of a first compressor (1), a first condenser (2), a vortex tube (4) and an evaporator (7), wherein the first condenser (2) is used for exchanging heat with a first water pipe (16) to make hot water or achieve heating, and a second condenser (5) is arranged on a pipeline between the first condenser (2) and the evaporator (7). The heating heat pump system further comprises an auxiliary circulation loop which is connected with the main circulation loop in an overlying mode through the second condenser (5), wherein the auxiliary circulation loop is used for exchanging heat with a second water pipe (17) to make hot water or achieve heating. By means of the heating heat pump system, heat of refrigerant in the main circulation loop can be further absorbed, intermediate-temperate water is made through the overlying circulation loop and is supplied together with high-temperature water made through the first condenser, the temperature range of made hot water is widened, intelligent regulation of the water temperature is achieved, and different demands of different users for hot water are met; energy at the hot end of the vortex tube is effectively utilized, and the COP of the system is improved.

The invention relates to a single- and double-stage overlapped type air source heat pump heating system. The system comprises a low-temperature-stage heat pump unit and a high-temperature-stage heat pump unit; the low-temperature-stage heat pump unit is equipped with a low-temperature-stage compressor, a low-temperature-stage condenser, a low-temperature-stage throttling valve and a low-temperature-stage evaporator; the high-temperature-stage heat pump unit is equipped with a high-temperature-stage compressor, a high-temperature-stage condenser, a high-temperature-stage throttling valve and a high-temperature-stage evaporator; the low-temperature-stage heat pump unit and the high-temperature-stage heat pump set are coupled at the high-temperature-stage evaporator to exchange heat; a load circulating circuit is respectively coupled with the low-temperature-stage heat pump unit and the high-temperature-stage heat pump unit at the low-temperature-stage condenser and the high-temperature-stage condenser to exchange heat. The system has the advantages of being high in structure, low in cost, high in efficiency, and high in energy efficiency ratio.

The invention discloses a movable-type heat pump device for heating/refrigerating a specific area of a space. When heating is required, the device pumps middle-temperature air from the space to a condenser end of a heat pump to be heated, and the required heated air is discharged to the specific area directionally; meanwhile, the middle-temperature air is pumped from the space to a main evaporator, after the heat in the middle-temperature air is absorbed, the air is discharged to the farther part of the space; the device is also provided with a secondary evaporator for low-temperature refrigeration, such as ice making; because the heat supply COP (coefficient of performance) value of the heat pump is greater than 1, under the same heat supply amount condition, compared with an electric heater, the device has the advantage that the electricity energy consumption is lowered obviously; when the function of the secondary evaporator is activated for making ice, the device can effectively utilize the cold amount at the secondary evaporator end, refrigeration or ice making is carried out at the same time during heating, the utilization rate of energy sources and devices is improved; when refrigerating is required, an air opening of the evaporator end directly faces a refrigerating area for supplying cold air, and an effect of dehumidification is achieved also. The device does not need a reversing valve, is a heating/refrigerating device with a new concept, is electricity-saving and is low in operation cost.

The invention belongs to the field of marine mechanical refrigeration, and provides a two-stage cascade absorption/compression composite refrigeration cycle system jointly driven by waste heat and power of engines. The cycle includes 1) a high temperature level absorption/compression composite refrigeration cycle; 2) a low temperature level absorption/compression composite refrigeration cycle; and3) an engine waste heat defrosting system. Under the circumstances that waste heat exhausted by a fishing boat engine is sufficient, cooling capacity needed by a fishing boat refrigerating chamber and freezing chamber can be provided by the two-stage cascade absorption refrigeration cycle driven by the waste heat; and under the circumstances of insufficient waste heat, compression refrigeration can be carried out through a corresponding high temperature level and low temperature level compressor which are driven by the fishing boat engine, and therefore, the rest of cooling capacity needed bythe fishing boat refrigerating chamber and freezing chamber can be supplemented. Heat defrosting can be performed on the refrigerating chamber and the freezing chamber by using part of engine waste heat, so that the consumption of other energy can be saved, and good refrigeration effects of the refrigeration system can be guaranteed.

The invention relates to the field of heat pump equipment and particularly relates to a heat pump water heater. Aiming at the problem that a heat pump water heater in a wet-cold region is difficult to be defrosted, the heat pump water heater provided by the invention is additionally provided with a second heater in a position opposite to an evaporator of an existing heat pump water heater, so that one part of hot water generated by the heat pump water heater exchanges heat with air which is to enter the evaporator in the second heater, so that the temperature of the air entering the evaporator is increased, and by virtue of reverse defrosting, the problem of frosting in winter in the wet-cold region can be effectively solved; furthermore, the heat pump water heater is low in cost and good in effect. The heat pump water heater provided by the invention can be widely applied to heating water systems in the wet-cold region in winter.