374results about How to "Improve heat recovery efficiency" patented technology

The invention discloses a shunting-type isothermal sulfur-tolerant conversion process. The process comprises the following steps: shunting raw coal gas from exterior into at least two parts; leading overheat stream in the first part of the raw coal gas to increase the temperature to 200-300 DEG C; and then entering a first-stage conversion reaction step to carry out a conversion reaction and generate first conversion gas; and conveying the other part of the raw coal gas to next-stage conversion reaction step to carry out a conversion reaction. The catalyst bed of a shift converter has the advantages of stable temperature, simple control, convenient operation and low output CO content. The invention has the advantages of short conversion flows, few equipment, reduced resistance, great byproduct stream amount, high overheat temperature, stream pressure and heat recovery rate, and the like, thereby achieving the aims of reducing conversion stages, equipment number and resistance fall, decreasing investment, having great byproduct stream amount and high overheat temperature, stream pressure and heat recovery rate, reducing conversion stream consumption and outward wastewater discharge, protecting the environment and easily maximizing the device equipment. The invention also discloses shunting-type isothermal sulfur-tolerant conversion equipment used by the process.

The invention relates to a simple, high-efficiency and reliable cold-warm air-conditioning water heater, which comprises a refrigerant loop, a hot-water condensing heat exchanger, a hot-water storing box and a signal acquisition and circuit control system. A scheme I of the invention is characterized in that: an exhaust opening of a compressor is connected with an air inlet of a three-way valve; a first air outlet of the three-way valve is connected with a refrigerant inlet of the hot-water condensing heat exchanger, and a second air outlet is connected and communicated with a first interfaceof a four-way valve and a refrigerant outlet of the hot-water condensing heat exchanger; a second interface, a third interface and a fourth interface of the four-way valve are respectively connected with the upper ports of an outdoor-wind heat exchanger and an indoor-wind heat exchanger and an air inlet of an air-liquid separator, and a capillary is connected in series between the lower ports of the outdoor-wind heat exchanger and the indoor-wind heat exchanger; an air outlet of the air-liquid separator is connected with an air inlet of the compressor; and an electromagnetic guide-valve low-voltage air-outlet pipe of the three-way valve is communicated with an air-sucking pipe of the compressor, and an electromagnetic guide-valve high-voltage air-inlet pipe of the four-way valve is communicated with an exhaust pipe of the compressor. A scheme II of the invention is characterized in that: the hot-water condensing heat exchanger is added between the exhaust opening of the compressor of a refrigerant-circulating loop of a cold and warm air conditioner and an air inlet of the four-way valve, and the electromagnetic guide-valve high-voltage air-inlet pipe of the four-way valve is communicated with the exhaust pipe of the compressor; and the two technical schemes both have four functions of hot-water making and refrigerating, hot-water making, refrigerating and heating.

The invention discloses a supercritical water oxidation reaction system for obtaining the heat supplemented by auxiliary fuel. The supercritical water oxidation reaction system comprises a reactor, a material device, an oxidant device, a desalting device, a fuel supplementing device and a cooling water device, wherein the material device is communicated with a material inlet on a reactor end cover; the oxidant device is communicated with an oxidant inlet on the reactor end cover; and the desalting device is communicated with a solid salt outlet at the bottom of the reactor. The energy is supplemented to the system by the auxiliary fuel, thereby reducing higher equipment input and operation cost brought by arranging an electric heater; by adopting the single-pass heat return, on the premise of ensuring the effective heat of a recovering system, the complexity of the system is reduced and further the equipment input is reduced and the operating and running stability of the system is improved; and a reasonable desalting scheme is provided for simultaneously desorbing solid salts and soluble salts generated in the reaction process. The supercritical water oxidation reaction system canbe widely applied to the innocent treatment process of high-condensation pollutants, such as organic wastewater/landfill leachate, and the like which are difficult to biochemically degrade.

The invention relates to a high-low temperature waste water double-channel heat recovery heat pump system. The high-temperature waste water heat recovery of the system is designed with single-channel waste water input and double-channel heat output. Through operation adjustment, one of two heat double-channel output routes is that running water exchanges heat with waste water through a heat exchanger, and after temperature rise, the running water transmits the recovered heat to a heat storage water tank; meanwhile, the other route is that under the automatic control of the system, part of running water is added to enter a condenser of a hot water source heat pump to exchange heat with a refrigerant gas and outputs recovered heat to the heat storage tank. The system radically solves the problem of recovery and use of high-temperature waste hot water, recovers heat of high-low temperature waste water with one set of system equipment, protects the heat pump from overheat protection to maintain the normal operation of the system and is wide in application ranges; after heat recovery, the temperature of the wasted water is reduced greatly, and the heat recovery amount and rate of the system are more than 40 percent higher than other heat recovery modes; and the system has the advantages of high efficiency, energy conservation, high input-output ratio, low operation cost, obvious economic benefits and so on.

The invention discloses a cooling, heating and power combined supply system based on a double-pressure organic Rankine cycle. The cooling, heating and power combined supply system comprises a low-pressure working medium pump, a low-temperature heat regenerator, a high-pressure working medium pump, a high-temperature evaporator, a high-pressure expander, a low-pressure expander, a first condenser, a low-temperature evaporator, a high-temperature heat regenerator, a generator, a compressor, a second condenser, a throttling valve, a refrigeration evaporator and a transmission device. According to the cooling, heating and power combined supply system, the low-grade heat energy is adopted for supplying drive force, the high-pressure expander is utilized for driving the compressor in the refrigeration cycle, and the cooling capacity is provided through air cooling; the low-pressure expander is utilized for driving the generator to provide electric energy; and the high-temperature heat regenerator further absorbs the energy in a low-grade heat source, and domestic hot water is provided. According to the system, cooling, heating and power combined supply can be achieved, and the utilization efficiency of the low-grade heat energy is improved.

The invention discloses a three-pipe heating and reclaiming air-conditioning system, which comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger, a manifold and an electronic expansion valve. The three-pipe heating and reclaiming air-conditioning system is also provided with a first three-way valve, a second three-way valve and a plate heat exchanger; the compressor is a jet enthalpy increasing compressor, and is provided with a high-pressure exhaust port, a low-pressure return port and a medium-pressure return port; the indoor heat exchanger comprises a first indoor heat exchanger and a second indoor heat exchanger; the manifold comprises a first manifold, a second manifold and a third manifold; the indoor heat exchanger comprises a first indoor heat exchanger and a second indoor heat exchanger; a first port of the first three-way valve and a first port of the second three-way valve are connected in parallel and are communicated with the high-pressure exhaust port of the compressor, and a second port of the first three-way valve is communicated with one end of the outdoor heat exchanger. The three-pipe heating and reclaiming air-conditioning system has the characteristics of increment of refrigerating/heating quantity of the system, improvement of operation reliability, environmental protection and energy conservation, high energy efficiency ratio and wide application range.

The invention discloses a regeneration-type variable-porosity heat regenerator for a low temperature refrigerator. The heat regenerator comprises a low temperature section and a high temperature section. A plurality of layers of regeneration fillers with different porosities are filled in the heat regenerator, and the porosity range of the regeneration fillers filled in the heat regenerator is 59%-92%. According to different proportions of various losses in the heat regenerator at different temperatures, regeneration fillers with different porosities are adopted in different temperature sections of the heat regenerator. Compared with the traditional heat regenerator filled with fillers with fixed porosity, the heat regenerator effectively reduces inside loss, improves heat regeneration efficiency and improves refrigerator efficiency.

The invention provides a fresh air conditioner and a control method thereof. The fresh air conditioner comprises an air conditioner main body, wherein a fresh air duct and an exhaust air duct are formed in the air conditioner main body; a heat exchange core body is arranged in the air conditioner main body; a fresh air flow duct and an exhaust air flow duct are formed on the heat exchange core body; the fresh air flow duct communicates with the fresh air duct; the exhaust air flow duct communicates with the exhaust air duct; a first heat exchanger is arranged in the fresh air duct; a heat recovery air duct is connected between the exhaust air duct and the exhaust air flow duct; and a second heat exchanger is arranged in the heat recovery air duct and connected with the first heat exchangerthrough a refrigerant pipeline. According to the fresh air conditioner, the heat and cold in airflow in the exhaust air duct are recovered by the heat exchange core body, and the other heat and coldin the exhaust air duct are recovered by the second heat exchanger in the heat recovery air duct, so that the heat recovery efficiency of the fresh air conditioner is improved, and the fresh air conditioner is more energy-saving.

The invention discloses a waste heat utilization system for an aluminium melting furnace, which comprises a furnace body, a spray nozzle and a fume pipeline, as well as a high temperature heat exchanger, a medium temperature heat exchanger and an evaporator, wherein a furnace chamber is formed in the furnace body; the spray nozzle is arranged on one side end wall of the furnace body; the fume pipeline is connected onto the other side end wall of the furnace body to discharge fume generated inside the furnace chamber to a chimney; the high temperature heat exchanger, the medium temperature heat exchanger and the evaporator are sequentially arranged in the fume flowing direction of the fume pipeline and used for enabling fume in the fume pipeline to exchange heat with different fluids respectively. The waste heat utilization system for the aluminium melting furnace, provided by the invention, comprises a primary waste heat utilization system, a secondary waste heat utilization system and a third stage waste heat utilization system, and can fully recycle fume waste heat of the aluminium melting furnace.

The invention relates to a circulation heat recovery heat pump type water heater, which is characterized in that the circulation heat recovery heat pump type water heater comprises a refrigeration loop, a heat flow return passage and a self circulation loop, wherein the refrigeration loop comprises a sealed flow passage formed by a compressor, a condenser, a liquid-liquid heat exchange evaporator and a liquid-gas heat exchange evaporator through being connected sequentially through pipelines, refrigeration working substances are filled in the refrigeration loop, the heat flow return passage comprises an open type flow passage formed by a heat return device, a condenser, a water storage tank, a first water pump and a hot water spraying device through being connected sequentially through pipelines, and also comprises an open type flow passage formed by a waste water collection tank, a second water pump, a heat return device and a liquid-liquid heat exchange evaporator through being connected sequentially through pipelines, hot water sprayed out through the hot water spraying device is discharged into the waste water collection tank after being used, and the self circulation loop comprises a sealed flow passage formed by a condenser, a water storage tank and a first water pump through being connected sequentially through pipelines. The invention can be widely used for bath or heating places such as factories, families, bath centers and the like, and has very large economic and market prospects.

The invention relates to a heat recovery heat pump air conditioner water chilling unit, which comprises a compressor, a four-way reversing valve, two outdoor heat interchangers, an indoor heat interchanger, a throttle valve, a refrigerant pipe and a heat recovery heat interchanger. The heat recovery heat pump air conditioner water chilling unit is added with the heat recovery heat interchanger, which can guarantee the recovery of the heat of condensation while realizing good refrigeration and heating. The parallel connection mode of the heat recovery heat interchanger and the two outdoor heat interchangers is adopted for controlling the flow distribution of a freezing medium and the recovery volume of the heat of condensation and convenient for precisely regulating and controlling the heat recovery volume in the heat recovery mode. Compared with a common series connection heat recovery machine unit, the water chilling unit needs few freezing medium and uses the heat of condensation, thus obtaining higher heat recovery efficiency; compared with a common parallel connection heat recovery machine unit, the water chilling unit has more multiple-stage regulation and does not influence the refrigeration effect and stably runs. The heat recovery heat pump air conditioner water chilling unit is mainly suitable for various large, middle and small size centre air-conditioner systems.

The invention relates to a metallurgical molten slag granulation and heat energy recovery device belonging to the technical fields of metallurgical molten slag treatment and waste heat recovery and utilization. The device contains a device body, a granulation apparatus, a cyclone separator and a molten slag funnel, wherein the molten slag funnel is arranged at the upper part of the device body; the granulation apparatus is closely arranged under the molten slag funnel; the cyclone separator is arranged on the side wall of the device body; and the lower part of the body is provided with a buried heat exchange pipe, a deslagging port, an air distribution plate, an air chamber and an air inlet. By using the device provided by the invention, various kinds of metallurgical molten slag can be effectively granulated, and heat energy of the molten slag can be recovered at high quality to produce hot water, hot air or steam, thus effectively solving various problems in the aspects of metallurgical molten slag granulation, heat energy recovery and the like.

The present invention relates to a kind of waste water after-heat recoverer. It includes the following several main portions: vertical water storage tank formed from cold water heat exchange cylinder and hot water heat exchange cylinder, several gravity heat pipes, sealed partition board, several segmental baffle plates, exhaust valve, blow-off valve, cold water inlet, preheated water outlet, waste hot water inlet, waste hot water outlet and heat-conducting pipe. Said invention also provides the connection mode of all the above-mentioned portions and the concrete working principle of said waste water after-heat recover.

A small fresh air fan comprises a machine shell, an old air exhaust system, a fresh air system and a heat exchanger arranged between the old air exhaust system and the fresh air system, wherein the old air exhaust system and the fresh air system are arranged in the machine shell, the old air exhaust system comprises an old air suction area and an old air exhaust area which are separately arranged, the fresh air system comprises a fresh air suction are and a fresh air exhaust area which are separately arranged, a fresh air heat exchange outlet and a fresh air heat exchange inlet are correspondingly formed in the heat exchanger to form a fresh air channel, and an exhaust air heat exchange inlet and an exhaust air heat exchange outlet are correspondingly formed in the heat exchanger to form an exhaust air channel; the average wind velocity of the section of the heat exchanger is 0.7-1.1 m/s, and wind resistance is 90-120 Pa. The small fresh air fan is high in space utilization rate, low in noise, capable of preventing blocking, high in fresh air volume, high in comfort level, good in energy saving effect and high in exhaust efficiency, and high-efficiency operation of the whole machine can be ensured.

The invention discloses an air conditioner unit mode switching control method and device and an air conditioner system. The air conditioner unit mode switching control method comprises the following steps that after an air conditioner unit runs for first preset time under the current running mode, the number of needed refrigeration compressors and the number of needed hot water compressors are judged; the next running mode of the air conditioner unit is obtained according to the number of the needed refrigeration compressors and the number of the needed hot water compressors; whether the next running mode is the same as the current running mode of the air conditioner unit or not is judged; if yes, the air conditioner unit is controlled to continue to run with the current running mode; if not, the air conditioner unit is controlled to be turned off for second preset time under the current running mode, and the next running mode is executed. By means of the method, the running modes of the air conditioner unit can be automatically switched, the corresponding running modes are started according to the needs, the actual using requirements of a user can be met better, the temperature set by the user can be reached more quickly, and the heat recycling efficiency is improved by judging the number of the needed compressors of the system while the air conditioner unit runs.

The invention discloses a solution total heat recovery and condensation dehumidification compound fresh air processing device, which comprises a return air processing system and a fresh air processing system, wherein a sensible heat exchange device is adopted, supply air with lower temperature is utilized for lowering the temperature of indoor return air, meanwhile, the supply air temperature of fresh air is also raised, and the fresh air can be directly supplied into a room. The state point of return air before entering a total heat recovery device approaches to a saturation line, the return air and the fresh air are subjected to total heat recovery in the solution total heat recovery device, the recovered energy of the return air is fully utilized, the input cold quantity of a cold source is reduced, and the energy efficiency of the fresh air processing device is improved. In addition, the fresh air processing device has the advantage that through work condition switching, the return air heat recovery and fresh air heating and dehumidification functions in winter can be realized.

The invention discloses a heat pump fresh air handling unit with constant temperature and humidity, which comprises a casing (1), a first filtering device, an air outlet device, a chip (5), a humidification device, a first heat exchanging device, a second filtering device, a second heat exchanging device, a compressing device, an air discharge device, an outdoor air inlet (14), an indoor air outlet (15), an indoor air inlet (16) and an outdoor air outlet (17), wherein a partition board is arranged in the middle of the casing (1) to divide the casing (1) into an upper half and a lower half; the first filtering device, the air outlet device, the humidification device, the first heat exchanging device, the outdoor air inlet (14), and indoor air outlet (15) are located at the lower part; and the second filtering device, the second heat exchanging device, the compressing device, the air discharge device, the indoor air inlet (16), and the outdoor air outlet (17) are located at the upper part. The heat pump fresh air handling unit provided by the invention has the characteristics of accurate temperature control and humidity control, efficient purification, automatic control, efficient heat recovery, integrated unit design, and convenience in installation and maintenance.

Disclosed are a dry cleaning and waste heat recovery method and a system for a middle temperature section of converter gas, and belongs to the production field of ferrous metallurgy. The system comprises a dedusting and setting chamber, a high temperature reversing valve group, a low temperature three-way reversing valve group, a heat storage heat exchange device, a gas cleaning and recovery device, an inertia flue gas circulating line and a chimney. The method includes preliminary dedusting by the dedusting and setting chamber; heat exchange and coarse dedusting in a regenerator; reversing of gas and inertia flue gas in the regenerator; cleaning and recovery of gas, cleaning of inertia flue gas, and waste heat recovery; and direct waste heat recovery of gas. The dry cleaning and waste heat recovery method and the system in the middle temperature section of the converter gas have the advantages that defects of consumption of water and pollution problems caused by the existing converter gas cooling through water or steam spraying are overcome, the heat recovery efficiency is high, the problem of explosive problem in dedusting and temperature reducing of the converter gas processes is solved, the complete recycling of the converter gas is achieved, not only the pollution is reduced, but also using efficiency of energy is improved.

The invention discloses a heat pump type fresh air ventilator set. The heat pump type fresh air ventilator set comprises a fresh air ventilation pipe and a dirty air ventilation pipe, wherein the inlet end of the fresh air ventilation pipe is sequentially provided with a filter, an electrode dust removing net and an HP (High Pressure) filtering net from an inlet to an outlet; the fresh air ventilation pipe is internally provided with a fresh air blower; the dirty air ventilation pipe is provided with a dirty air exhausting blower. The heat pump type fresh air ventilator set is compact in structure, small in volume, low in pressure drop and high in efficiency. The inlet end of the fresh air ventilation pipe is sequentially provided with the filter, the electrode dust removing net, the HP filtering net, an active carbon filtering net, a nano titanium dioxide filtering net and a photocatalyst net so that the air filtering efficiency is very high. A heat pump type heat exchanger is arranged between the fresh air ventilation pipe and the dirty air ventilation pipe so that the heat recycling efficiency is high and is higher than that of a conventional fresh air ventilator by more than 40%.

The invention discloses a fresh air treatment device for indirect evaporative cooling return air total heat recovery. The fresh air treatment device is composed of a sensible heat recovery device for supply air and return air, a return air total heat recovery device, an air treatment device and the like. The sensible heat recovery device is adopted for the fresh air treatment device, the supply air low in temperature is used for cooling the indoor return air, a state point of the return air is close to a saturation line before the return air enters the total heat recovery device, and therefore the total heat recovery process of fresh air and the return air is close to the saturation line, and the efficiency of the total heat recovery device is improved. Meanwhile, the supply air temperature of the fresh air is increased, and the fresh air can be fed indoors directly. Through the fresh air treatment device, recoverable energy of the return air is fully used, the input cooling capacity of a cold source is reduced, and the energy efficiency of the fresh air treatment device is improved. In addition, through working condition switching, the fresh air treatment device can have the functions of recovering heat of the return air and heating and humidifying the fresh air in winter.

The invention discloses a profound hypothermia discharger adopting full carbon aerogel. The profound hypothermia discharger adopting the full carbon aerogel comprises a shell, a cold end and a hot end, an absorption layer is arranged on the cold end, and the absorption layer is composed of full carbon aerogel. A full carbon aerogel layer is arranged at the cold end of the profound hypothermia discharger, wherein one side of the full carbon aerogel layer is strong in absorption capability. Full carbon ultralight gel materials adsorbing helium have a high volumetric specific heat capacity within the temperature range of 10K and under 10K, and has a high thermal efficiency at the profound hypothermia under 10K. The invention further discloses a stirling cryocooler, the profound hypothermia discharge adopting the full carbon aerogel is applied to the stirling cryocooler to enable the stirling cryocooler to be good in stability and reliability in a deep low temperature zone, and high in refrigeration effect.

The invention discloses an entrained flow gasification system and method. The entrained flow gasification system comprises a gasifier, a steam drum and a scrubber tower, wherein the gasifier comprises a gasification chamber and a radiant syngas cooler, the gasification chamber is provided with a feeding port and an oxygen inlet, and the radiant syngas cooler is provided with a first water inlet, a first steam outlet, a raw gas outlet and a slag outlet; the steam drum is provided with a first water outlet, a first steam inlet and a steam exhaust port, the first water outlet and the first water inlet are communicated, and accordingly, heat exchange with the radiant syngas cooler is realized through water in the steam drum; the scrubber tower is provided with a raw gas inlet and a raw gas exhaust port, and the raw gas inlet and the raw gas outlet are communicated, so that the scrubber tower scrubs raw gas exhausted by the gasifier. According to the entrained flow gasification system provided by the embodiment of the invention, a heat recovery mode adopting chilling water to recover heat in related technology is broken through, sensible heat of gas in a coal gasification process is recovered totally, and high-quality steam is produced, so that energy is used more sufficiently.

The invention discloses a waste heat recovery for condensing type anti-corrosive gas/oil-fired boiler, which can effectively recover the physical heat of boiler flue; not only lots of sensible heat is recovered, but also the latent heat of vaporization discharged by condensation of water vapor. The structure is as follows: a common heat tube heat exchanger body and a solution spraying device are included. The heat tube heat exchanger body is used for transferring the heat from the flue side to the other side by the shock transmission of the heat tube, so as to heat the air or water; the solution sprayed by the sprayer is uniformly distributed in the heat exchange tube on the flue side and on the inner wall of the heat exchanger, so as to remove the corrosion from the weakly acidic solution formed by condensation of water vapor in the flue of the boiler.

The invention discloses a three-dimensional flow thermal coupling modeling method for a cement grate cooler. The modeling method takes a cement clinker layer in the grate cooler as a porous medium, applies a mechanics of fluid through porous media theory for modeling, and comprises the following steps: building a three-dimensional flow thermal coupling physical model of the cement grate cooler according to the cooling condition of the clinker in the grate cooler; building a three-dimensional flow thermal coupling mathematical model of the grate cooler according to the physical model, the law of mass conservation, the law of conservation of momentum and the law of conservation of energy. The modeling method has the benefits that the factors of grate speed, supplied wind velocity, side wall heat dissipation, feeding temperature, clinker particle diameter, and the like are considered; the three-dimensional temperature distribution of the clinker can be calculated conveniently and accurately; different cooling strategies are simulated by adjusting the working condition parameters, so as to obtain an optimal strategy enabling the grate cooler to work efficiently and reasonably, improve the heat recovery efficiency of the grate cooler, and achieve the purposes of energy conservation and emission reduction; the modeling method is the optimal clinker cooling strategy applied to confirm that the discharging temperature of the grate cooler is relatively low, and the recovery wind warm is relatively high.

The invention relates to an opened circulating Stirling engine comprising a hot-end cylinder, a hot-end piston, a regenerator, a cold-end cylinder and a cold-end piston. The regenerator is an one-way regenerator, the cold-end inlet and hot-end outlet of the one-way regenerator form a low-temperature medium channel, and the hot-end inlet and cold-end outlet form a high-temperature medium channel; the cold inlet of the cold-end cylinder is communicated with the air, and the cold outlet is communicated with the cold-end inlet of the one-way regenerator; the hot inlet of the hot-end cylinder is communicated with the hot-end outlet of the one-way regenerator, and the hot outlet is communicated with the hot-end inlet of the one-way regenerator; the cold-end outlet of the one-way regenerator is communicated with the air. The circulating medium adopts the one-way flowing manner, the heat exchanging manner is optimized, and the regenerating efficiency is improved; an absolute sealing device for a power piston and an expanding piston is omitted, the friction resistance is reduced greatly, and engine mechanical efficiency is improved; meanwhile, the medium is of the air, the operating pressure and temperature are low, expensive temperature-resistant material is omitted, cost is low, reliability is high, energy is saved, and environment is protected.