42results about How to "Increase return water temperature" patented technology

The invention provides an energy-saving control device and method for a data center air conditioning terminal. The device and method are applied to a data center air conditioning terminal structure composed of a cold water coil pipe, a draught fan, a regulating valve, a speed regulation execution device, a chilled water inflow pipeline, a chilled water outflow pipeline, an air supply channel and an air return channel. The energy-saving control device comprises a supplied air temperature sensor, a supplied air static pressure sensor, a returned air temperature sensor, an optimization control module, a supplied air temperature control module, a static pressure module and the like. By the adoption of the device and method, the returned air temperature control accuracy can be improved, local hot spots are avoided, the supplied air is controlled in an environment-friendly safe section, the energy consumption of the draught fan of the data center air conditioning terminal can be saved as well, and the energy effect of a whole water cooling air conditioner system is improved.

The invention relates to a cool double-effect lithium bromide spray absorption type refrigeration cycle system. A refrigerant water passage of a condenser is divided into three paths; in the first path, the condenser is communicated with an evaporator; in the second path, one end of the second refrigerant water passage is communicated with the condenser, and the other end of the second refrigerant water passage passes through a first absorber to be communicated with a second absorber; in the third path, a liquid storage device is communicated with the condenser, one end of a second connecting pipe is communicated with the liquid storage device, the other end of the second connecting pipe is communicated with a boiler, one end of a first connecting pipe is communicated with a boiler, the other end of the first connecting pipe is communicated with the condenser, the other end of the connecting pipe is communicated with an ejector, one end of a first refrigerant water vapor pipeline is communicated with the ejector, the other end of the first refrigerant water vapor pipeline is communicated with a generator, the first absorber is communicated with an evaporator, one end of a medium concentration solution pipeline is communicated with the first absorber, the other end of the medium concentration solution pipeline is communicated with the second absorber, one end of a first dilute solution pipeline and one end of a first concentrated solution pipeline are both communicated with the second absorber, and the other ends of the first dilute solution pipeline and the first concentrated solution pipeline are both communicated with the generator. The system is used in an absorption type water source heat pump system.

The invention discloses a synergized heat supply device with a CO2 air source heat pump. The device mainly comprises a first compressor, a heat regenerator, a gas cooler, an evaporator, a heat exchanger, a condenser, a second compressor and a central processing unit. The heat exchanger, the condenser, the second compressor and a second throttle valve form a simple and easy heat pump nested in a system. According to the synergized heat supply device with the CO2 air source heat pump provided by the invention, an operating principle of a CO2 air source heat pump system is changed, and the central processing unit and the simple and easy heat pump are additionally arranged in the CO2 air source heat pump system, so that the water inlet temperature of the gas cooler of a CO2 air source heat pump in the heat supply device is effectively reduced; and the central processing unit releases heat of collected water into a CO2 refrigerant system, so that the heat of the CO2 refrigerant system is improved, and the temperature of water in a water supply pipeline of heating equipment is improved. The central processing unit and the simple and easy heat pump are combined, so that the comprehensiveenergy efficiency ratio of the CO2 air source heat pump is greatly improved, and the technical problem that a traditional CO2 air source heat pump cannot operate cyclically in heat radiator concentrated heating is solved.

The invention discloses an efficient indoor heating system for a capillary pump. The efficient indoor heating system for the capillary pump comprises a secondary network indoor water supply transversepipe, a secondary network indoor return water transverse pipe, an evaporator, a steam conveying pipeline, a gas-liquid isolator, a liquid conveying pipeline, a pressure sensor, a pressure regulatingstorage device, an electric heating device, a programmable controller, an outdoor temperature sensor and a condenser. The evaporator is provided with a heating medium inflow port and a heating mediumoutflow port, and a plurality of capillary liquid absorbing cores are arranged in the evaporator in parallel. The system can significantly reduce the return water temperature of a secondary network, thereby increasing the supply and return water temperature difference of the secondary network and reducing the circulation pump flow and electric energy consumption of the secondary network; and meanwhile, the primary network return water temperature is reduced, the supply and return water temperature difference of a primary network is increased, the circulation pump flow rate and electric energyconsumption of the primary network are reduced, and energy-saving operation of a transportation and distribution system is realized.

The invention discloses a system capable of preventing water vapor in a flue gas recirculating pipeline of a gas-fired boiler from condensing, and relates to the technical field of safe operation of the gas-fired boilers. The system comprises an air preheating system, a return water heating system, a flue gas recirculating system and an absorption type heat pump flue gas waste heat utilization system. While the system operates, a lithium bromide absorption type heat pump is used for cooling flue gas on the tail part of the boiler to a temperature of about 30 DEG C, and return water and part ofcombustion-supporting air are preheated. Preheated air and circulated flue gas are fed into a furnace hearth to support combustion after being mixed, and the temperature of a gas mixture is higher than a dew point of the water vapor before the gas mixture enters the furnace hearth, so that condensed water is not generated. On the premise of sufficiently utilizing flue gas waste heat, the problemthat the pipeline and a fan are damaged as water vapor in the flue gas recirculating pipeline is condensed especially in winter in North is effectively solved. Besides, water vapor in the flue gas isrecycled, so that economical efficiency and safety of boiler operation are improved.

The invention discloses a large temperature difference cold water composite cascade utilization system based on waste heat utilization, including a waste heat absorption type large temperature difference cascade refrigeration system, a chilled water cascade utilization system, a cooling water cascade utilization system, and a regional cooling user system, waste heat absorption type large temperature difference The cascade refrigeration system supplies cold water to the chilled water cascade utilization system through pipelines, the chilled water cascade utilization system supplies cold water to the cooling water cascade utilization system through pipelines, the cooling water cascade utilization system supplies cold water to the regional cooling user system, and the cooling water cascade utilization The hot water in the system flows back to the waste heat absorption type large temperature difference cascade refrigeration system for cooling. The invention utilizes waste heat from thermal power plants to perform absorption refrigeration, realizes waste heat and waste heat cascade utilization, improves primary energy utilization, increases return water temperature, increases supply and return water temperature difference in regional cooling systems, expands cold water use temperature difference, and greatly reduces cold water circulating water volume. Reduce the energy consumption and cooling loss of pipe network transportation, and reduce the energy consumption of cold water pipe network transportation.

The invention provides a flue gas treatment system of a boiler. The flue gas treatment system comprises a flue gas condensing unit, an absorber, a regenerator, a steam condensing unit and a pluralityof water return branched pipes, wherein the flue gas condensing unit communicates with the boiler through a first smoke exhaust pipe; the absorber communicates with the flue gas condensing unit through a second smoke exhaust pipe; the absorber communicates with a chimney through a third smoke exhaust pipe; the absorber and the regenerator communicate with each other through a liquid drainage pipeand a liquid inlet pipe; the regenerator communicates with the steam condensing unit through a steam pipeline; each of the steam condensing unit and the flue gas condensing unit is in heat exchange connection with one water return branched pipe; and the water return branched pipes communicate with a water return pipeline of the boiler. According to the flue gas treatment system, pollutants contained in exhaust smoke can be reduced, the moisture content of flue gas is decreased, the size of all parts is decreased, and waste heat and moisture of flue gas are effectively recycled.

The invention relates to a natural accumulator for fuel oil, fuel gas, electric energy and thermal power. The natural accumulator comprises a heat energy converter, a high-temperature thermal power receiving container and a heat storage box, the high-temperature thermal power receiving container is arranged on the upper part of the heat energy converter, and a medium-temperature thermal power receiving inner container is arranged on the outer side of the high-temperature thermal power receiving container and the outer side of the heat energy converter in a sealed mode; a medium-temperature thermal power receiving outer container is arranged on the outer side of the medium-temperature thermal power receiving inner container, and a heat-conducting medium cavity is formed between the medium-temperature thermal power receiving outer container and the medium-temperature thermal power receiving inner container; the heat storage box is arranged at the upper part of the medium-temperature thermal power receiving outer container; a thermal conduit is arranged in the middle in the heat storage box and is in communication with the high-temperature thermal power receiving container; an snake-shaped heat dissipation air pipe is arranged in the heat storage box, an air outlet is formed in the upper end of the snake-shaped heat dissipation air pipe, and an air inlet is formed in the lower endof the snake-shaped heat dissipation air pipe; and the bottom of the heat storage box is connected with a circulating water pipe to be in communication with the medium-temperature thermal power receiving outer container. According to the natural accumulator for fuel oil, fuel gas, electric energy and thermal power, heat loss is reduced, the heat storage time is shortened, the heating efficiency is improved, the heat exchange effect is improved, and the effective heat utilization rate is increased.

The invention provides a smoke gas composite tube waste heat recovery device. The smoke gas composite tube waste heat recovery device comprises an outer shell body and a plurality of heat exchanger tubes arranged in the outer shell body, a smoke inlet, a smoke outlet, a liquid inlet and a liquid outlet are formed in the outer shell body, the liquid inlet and the liquid outlet are formed in the twoends of the outer shell body, the heat exchanger tubes are arranged side by side, and the axes of the heat exchanger tubes are perpendicular to the axes of the liquid inlet and liquid outlet; the heat exchanger tubes comprise outer tubes and inner tubes, the outer tubes and the inner tubes are concentric tubes, an enclosed space is formed between the outer tubes and the inner tubes, thin-walled tubes are fixedly arranged in the enclosed space, the thin-walled tubes and the inner tubes are concentric tubes, and working liquid is arranged in the enclosed space and circularly flows along the inner sides and the outer sides of the concentric tubes; and the heat exchanger tubes are sequentially connected in an end-to-end mode, the starting ends of the inner tubes after connection are connectedwith the liquid inlet, and the tail ends of the inner tubes are connected with the liquid outlet.

The invention discloses a respective-control phase change comprehensive waste heat utilization air preheating system and method. The system comprises an air preheater (33), an air preheater front air way (31), an air preheater rear flue (32), a condensate water main pipe (11), a steam main pipe (15), an air heater (28), a flue gas phase change cooler (12), a flue gas water cooler (7), a phase change water heater (17), a condensate water regulating valve (30), a steam flow regulating valve (14) and a liquid flow pipe (5). By means of the respective-control phase change comprehensive waste heat utilization air preheating system and method, a respective-control phase change heat exchange manner is adopted in a final-stage flue gas waste heat recovery heat exchanger, the final-stage flue gas waste heat recovery heat exchanger is combined with a condensate water air heater and a high-temperature flue gas cooler, and waste heat recovery benefits are improved.

The invention discloses an efficient condensation gas water heater for mixed heat exchange and a system. The water heater comprises a combustor, a heat exchanger, an equal-pressure smoke cover for separating a spraying system for direct contact heat exchange from the heat exchanger, and a chimney; through reasonable thermal performance design, high-temperature smoke is cooled after heat exchange by the heat exchanger, and no condensed water is generated; due to no need to consider the condensed water corrosion of the heat exchanger, the material grade and the process cost of a dividing wall heat exchange device can be reduced; the spraying system for direct contact heat exchange atomizes and sprays out cyclic spraying liquid to fully absorb latent heat of low-temperature smoke; the cyclicspraying liquid can adopt organic working mediums or water working mediums with safety, no poison, low viscosity and dewatering property; the efficient condensation gas water heater is connected witha heat pump to form an efficiency improvement and energy conservation system, so that the temperature of the cyclic spraying liquid is lowered, the condensation heat transfer efficiency of the low-temperature smoke is further improved, and the overall operation efficiency of the water heater and the system is improved; and the efficient condensation gas water heater effectively improves the overall system operation efficiency, and further reduces the smoke carbon emission through a spraying system.

Provided is a full-backwater multichannel circulating energy saver for a fuel gas hot-water boiler. The full-backwater multichannel circulating energy saver solves the problem that when existing single loop circulation is adopted, the flow velocity of water in an energy saver pipe is high so that the boiler cannot run normally and backwater of a hot-water boiler system cannot fully return to the energy saver. A circulating water outlet container is communicated with an energy saver body through a plurality of first pipelines, a circulating water inlet container is communicated with the energy saver body through a plurality of second pipelines, a first water-controlling valve is installed at the upper end of the circulating water outlet container, a first water drain valve is installed at the lower end of the circulating water outlet container, a second water-controlling valve is installed at the upper end of the circulating water inlet container, and a second water drain valve is installed at the lower end of the circulating water inlet container. The multichannel circulating energy saver is used for heat exchange of the fuel gas hot-water boiler.