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

A cold regulation device in cold supplying system of local centralized type is prepared as connecting server of refrigerating station (SRS) to controller of refrigerating station (CRS) and controller of secondary cold exchanging station (CSCES) through converter, connecting multiple remote monitor computer to CRS and multiple CSCES through converter, connecting each CSCES to local monitor computer and multiple tail end controllers separately through industrial control network, carrying out cold regulation on tail device of central air-conditioning and on secondary cold exchanging station, carrying out water temperature regulation on local centralizing cold supplying network.

The invention discloses an energy-saving recycling combination system for industrial circulating cooling water. The system comprises two circulating cooling water systems, namely, a sealed-type circulating cooling water system and an open-type circulating cooling water system and specifically comprises a cold water tank, a water treatment process device, a cooling water supply pump, a pressure sensor, a flow sensor, a cooled device, an intermediate water tank, a lift pump, a cooling tower, a heat pump set, a hot water tank, a liquid-level sensor and an electronically controlled device and is an energy-saving and water-saving optimized combination system for industrial circulating cooling water. Serial-type water supply is adopted in the sealed-type circulating cooling water system, parallel-type water supply is adopted in the open-type circulating cooling water system, the utilization rate of the cooling water is increased to a maximize extent and the water supply amount of the cooling water is decreased. Since the system is provided with the water treatment process device, the water quality of the circulating water is improved, the sewage discharge capacity is decreased and the concentration multiple of the circulating water is increased. By arranging the heat pump set in the system, the low-temperature waste heat of the return water of the cooling water is effectively recovered, the evaporation amount is reduced and the effective utilization of the heat source is achieved and the system has important practical values.

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 provides a condensation water recycling heat-supply system based on a water-water ejector. The condensation water recycling heat-supply system comprises a condenser heat well, a heat regenerative system, a heat supply network water supply and backwater system, the water-water ejector and a plate heat exchanger, wherein the heat supply network water supply and backwater system comprises an absorption heat pump and a heat supply network heater, a water drainage pipeline of the heat supply network heater is connected with a power water inlet of the water-water ejector, a water drainage pipeline of the absorption heat pump is connected with a pump suction port of the water-water ejector, a water outlet of the water-water ejector is connected with a heat release side inlet of theplate heat exchanger, and a heat release side outlet of the plate heat exchanger is connected with the condenser heat well; and heat supply network backwater is connected to a heat absorption side inlet of the plate heat exchanger through a heat supply network backwater branch pipe, and a heat absorption side outlet of the plate exchanger is connected to a water inlet pipeline of the heat supply network heater. Heat of high-temperature water draining and heat of high-temperature water condensation are recycled, and energy-conservation emission reduction and thermoelectric decoupling of a wholethermal power plant are promoted.

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.

A kind of concentrated heat-supply system includes a steam turbine (1), which has a condenser (2), at least a steam absorption type heat pump (3), a steam-water heat exchanger (4) and pipes (7, 8, 9). The exhausted steam of the steam turbine (1) is used to pre-heat the back-water of the first heat network, and drive the steam absorption type heat pump (3). The hot water of the heat network is heated by the condenser (2), the steam absorption type heat pump (3) and the steam-water heat exchanger (4) for three times. At the end, the heat-supply hot water of the second network is heated by a hot water absorption type heat pump (5) and a water-water heat exchanger (6) in a combination form.

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 belongs to the technical field of energy sources, and relates to a concentrated heat supply system for reclaiming smoke afterheat by an absorption heat pump. The system is used for reclaiming smoke afterheat of natural gas and water. The system is composed of a smoke flue, the absorption heat pump, a spray device, a water quality processing device and a circular water pump; smoke flows in the smoke flue from bottom to top; circular water is ejected by the spray device to form atomized drops for directly contacting with the smoke to exchange heat and is introduced to an evaporator of the absorption heat pump by the water pump after being processed by the water quality processing device after flowing out from the smoke flue; hot net returned water is sequentially introduced toan absorber and a condenser of the absorption heat pump; the circular water absorbing heat of the smoke and the hot net returned water are subjected to heat exchange in the absorption heat pump to reach the needed temperature and then are returned to a hot net. The smoke and the water are in direct contact for heat exchange in the invention; the heat of the circular water heated by the smoke is extracted from the absorption heat pump to raise the temperature of the returned water of the heat supply system; thus the total energy utilization rate of the concentrated heat supply system is increased; and the effects of cleaning the smoke and protecting the environment are achieved.

The invention relates to the technical field of heat supply, in particular to a heat supply system of a gas boiler room and an energy utilization method. The invention discloses the heat supply system of the gas boiler room. The heat supply system of the gas boiler room comprises a boiler hot water system which is respectively connected with a solar heat collector and an air source heat pump system; the air source heat pump system is connected with a ground source heat pump system; and a cross-seasonal energy storage water ring system is connected with the ground source heat pump system. When the solar radiation intensity is low, air energy and geothermal energy serve as auxiliary devices to provide heat, the return water temperature of a gas-fired boiler is increased, the gas consumption is reduced, and multi-energy complementation is achieved.

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, long-distance and large-height-difference central heating system which comprises a steam turbine unit, a relay steam mixing station, a first-stage energy station, a second-stage energy station, a third-stage comprehensive energy station, a fourth-stage energy station and a heat user. A high-parameter steam long-distance conveying pipe network, a low-parameter steam long-distance conveying pipe network and a steam condensation water pipeline are arranged between the steam turbine unit and the relay steam mixing station; a high-parameter steam long-distance conveying pipe network, a high-low pressure parameter steam mixed long-distance conveying pipe network and a steam condensation water pipeline are arranged between the relay steam mixing station and the first-stage energy station; an ultra-high-temperature hot water pipe network and an ultra-low-temperature hot water pipe network are arranged between the first-stage energy station and the second-stage energy station; a zero-level network water supply pipeline and a zero-level network water return pipeline are arranged between the second-level energy station and the third-level comprehensive energy station; and an I-level network water supply pipeline and an I-level network water return pipeline are arranged between the third-level comprehensive energy station and the fourth-level comprehensive energy station. According to the invention, ultra-long-distance long-distance steam / hot water delivery is realized.

The invention provides a heat supply system which comprises a heat supply assembly, an expansion work recovery assembly and a refrigerating assembly. A heat source passes through a steam generator first to transfer part of heat to a first working medium, and then the heat source is transferred to a first heat supply heat exchanger and supplies heat to a user; the first working medium absorbing heat becomes overheated steam, the overheated steam becomes low temperature steam after being acted by an expansion machine, the low temperature steam transfers parts of heat to a second working medium through a condenser, and the first working medium forms reflux; the expansion machine drives a compressor to act and compresses the second working medium of gas to high temperature and high pressure gas, heat is transferred to a second heat supply heat exchanger and is supplied to the user, and the second working medium returns to the condenser to form circulation. The expansion machine is driven by the high temperature heat source to provide power to the compressor, so that the return water temperature is reduced, the heat supply capacity of an existing pipe network is improved and the energyuse efficiency of the heat supply system is improved on the premise of not increasing extra acting electric power.

The invention belongs to the technical field of cooling systems, and particularly relates to a large-temperature-difference concentrated energy station refrigerating system. The large-temperature-difference concentrated energy station refrigerating system comprises a concentrated energy station, a tail end cooling station and a circulating conveying pipeline, wherein the concentrated energy station is used for providing cooling water for the tail end cooling station; the tail end cooling station is used for carrying out heat exchange with a tail end heat exchange station through the cooling water and is further used for providing return water after heat exchange for the concentrated energy station; the tail end cooling station is further provided with a centrifugal heat pump unit, and the centrifugal heat pump unit is used for increasing the temperature of the return water, so that the temperature difference between the return water and the cooling water is not less than 20 DEG C; and the circulating conveying pipeline is arranged between the concentrated energy station and the tail end cooling station and is used for conveying the cooling water and the return water. Through the arrangement, the conveying temperature difference of the chilled water is improved, and then the conveying efficiency of the chilled water is improved or the cooling load capacity increase is realized for a built project.

The invention discloses a large-temperature-difference cold water composite gradient utilization system based on waste heat utilization. The large-temperature-difference cold water composite gradientutilization system comprises a waste heat absorption type large-temperature-difference gradient refrigeration system, a chilled water gradient utilization system, a cooling water gradient utilizationsystem and a district cooling user system. The waste heat absorption type large-temperature-difference gradient refrigeration system supplies cold water to the chilled water gradient utilization system through a pipeline. The chilled water gradient utilization system supplies cold water to the cooling water gradient utilization system through a pipeline. The cooling water gradient utilization system supplies cold water to the district cooling user system. Hot water of the cooling water gradient utilization system flows back to the waste heat absorption type large-temperature-difference gradient refrigeration system to be cooled. According to the large-temperature-difference cold water composite gradient utilization system, waste heat of a thermal power plant is utilized for carrying out absorption type refrigeration; waste heat and exhaust heat gradient utilization is achieved; the primary energy utilization ratio is increased; the water return temperature is improved; the water supplyand return temperature difference of the district cooling system is increased; the cold water use temperature difference is enlarged; the circulating water amount of cold water is greatly reduced; pipe network conveying energy consumption and cold losses are reduced; and cold water pipe network conveying energy consumption is reduced.

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 present invention provides cold volume governing system for regionally concentrated cold supply second-stage cold volume exchange station, including a second-stage cold volume exchange station controller and a remote, local supervisory computer respectively connecting to the converter. The second-stage cold volume exchange station controller is connected with a cold architecture cold-supplying pipe net supply water temperature sensor, a return water temperature sensor, a frequency conversion cycle water pump, a backwater-supplying differential pressure transducer and an outdoor environment humiture sensor through the analog quantity input module, and connected with the cold architecture cold-supplying pipe net frequency conversion cycle water pump through the digital quantity input module, an analog quantity, a digital quantity output module, also connected with the second-stage cold volume exchange station plate exchanger secondary side backwater flow control valve and the by-pass control valve through the analog quantity input, the output module. The invention can greatly advance the cold architecture freeze supply water temperature and the second-stage cold volume exchange station plate exchanger secondary side backwater temperature, which has good energy saving effect and good popularizing applied cost.

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 provides a condensation water recycling heat-supply system based on a water-water ejector. The condensation water recycling heat-supply system comprises a condenser heat well, a heat regenerative system, a heat supply network water supply and backwater system, the water-water ejector and a plate heat exchanger, wherein the heat supply network water supply and backwater system comprises an absorption heat pump and a heat supply network heater, a water drainage pipeline of the heat supply network heater is connected with a power water inlet of the water-water ejector, a water drainage pipeline of the absorption heat pump is connected with a pump suction port of the water-water ejector, a water outlet of the water-water ejector is connected with a heat release side inlet of theplate heat exchanger, and a heat release side outlet of the plate heat exchanger is connected with the condenser heat well; and heat supply network backwater is connected to a heat absorption side inlet of the plate heat exchanger through a heat supply network backwater branch pipe, and a heat absorption side outlet of the plate exchanger is connected to a water inlet pipeline of the heat supply network heater. Heat of high-temperature water draining and heat of high-temperature water condensation are recycled, and energy-conservation emission reduction and thermoelectric decoupling of a wholethermal power plant are promoted.

The present invention provides a high-efficient and energy-saving air-conditioning system used for district cooling, which comprises a refrigeration host, a chilled water primary pump, a chilled water secondary pump, a plate heat exchanger, a new air processing device, a return air processing device, a new air pre-processing device, a user chilled water circulating pump and a total heat exchanger. The present invention further provides a realization method of the air-conditioning system. The high-efficient and energy-saving air-conditioning system and the realization method of the invention are based on the second law of thermodynamics and the optimized scientific energy utilization principle of exergy economics, and realizes the purposes of increasing the temperature difference between the supply water and the return water of a chilled water secondary pipeline and reducing the flow rate thereof by the method of connecting two levels of refrigeration with the refrigeration host in series and the innovative cold energy gradual utilization of a tail-end device.

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 relates to a circulating steam distillation apparatus and a process for extracting methylcyclopentadienyl manganese tricarbonyl by the aid of the apparatus. The apparatus comprises a distillation kettle, a condenser and an oil and water separator, a heating system and a stirrer are arranged in the distillation kettle, a condensed water overflow pipe is connected between the distillation kettle and the oil and water separator, a lower discharge outlet of the oil and water separator is connected with a liquid seal pipe, and a pressure balancing pipeline is connected among the liquid sealing pipe, the oil and water separator and the condenser. The process includes adjusting the height of the liquid seal pipe and the height of the condensed water overflow pipe; filling materials and water into the distillation kettle; stirring, distilling and cooling the materials; and performing reflux and separation of water and oil by the oil and water separator. The device and the process have the advantages that useful components such as the MMT (methylcyclopentadienyl manganese tricarbonyl) can be recovered to the greatest extent, high methylcyclopentadienyl manganese tricarbonyl recovery rate can be realized, the difficult problem of coking of a distillation kettle used in a traditional rectifying process is avoided, and large quantities of fresh water and energy can be saved as compared with an existing steam distillation process.

The invention relates to a dry-heat rock heat exchange device capable of achieving local secondary heat exchange. The heat exchange device comprises a heat insulation tube, a water supply tube, a spray nozzle, a spray nozzle joint, a spray room, a diffuser, a water return tube and a water collector, wherein the water supply tube, the spray nozzle, the spray room and the diffuser are sequentially arranged in the heat insulation tube from top to bottom; the heat collector communicates with the heat insulation tube, and is arranged on the bottom of the heat insulation tube; the spray nozzle is positioned in the spray nozzle joint; the water supply tube communicates with the spray nozzle; the upper part of the spray room is connected to the spray nozzle joint; the lower part of the spray roomis connected to the upper part of the diffuser; the lower part of the diffuser communicates with the water collector; and the bottom of the water collector is provided with a water return tube which communicates with the water collector. The dry-heat rock heat exchange device is simple in structure, is economical and reasonable, is safe and reliable, is environmentally friendly, is wide in population prospect, is high in heat exchange efficiency, and is good in thermal insulation.

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.

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.