40results about How to "Lower the inlet water temperature" patented technology

A quick heating type heat pump water heater for recovering shower waste heat is composed of a condenser, an evaporator, a throttling device, a compressor, a heat regenerator, a preheater, a primary water tank, an auxiliary water tank, a water mixing controller, a spraying device and a valve. The heat regenerator and the evaporator are installed under the feet of a shower person, the spraying device is arranged above the head and communicated with the water mixing controller, the preheater is arranged in the auxiliary water tank, the condenser is arranged in the primary water tank, the water outlet end of the auxiliary water tank is connected with an inlet of the water mixing controller, and the water inlet end of the auxiliary water tank is connected with a water outlet pipe of the primary water tank. One end of the valve is connected with tap water, the other end of the valve is respectively connected with a water inlet pipe of the primary water tank and a water inlet pipe of the heat regenerator, and the water outlet end of the heat regenerator is communicated with the water mixing controller. The condenser, the throttling device, the evaporator and the compressor form a closed loop, an outlet of the condenser is connected with an inlet of the throttling device, an outlet of the throttling device is connected with an inlet of the evaporator, an outlet of the evaporator is connected with an inlet of the compressor, and an outlet of the compressor is connected with an inlet of the condenser.

The invention discloses a directly-heated type double-source heat pump water heater and a control method thereof, and relates to a fluid heater provided with a solar heat collector and utilizing a heat pump and a control method of the fluid heater. The directly-heated type double-source heat pump water heater comprises a directly-heated type variable-frequency heat pump, a solar water heater, a heat storing water tank, water-supplementing flow regulating element and a control device, heat collecting tubes of the solar water heater are of lower-end water inflow and high-end water outflow structures, a cold water supplying pipeline is connected to the directly-heated type variable-frequency heat pump through the water-supplementing flow regulating element, a hot water outlet of the directly-heated type variable-frequency heat pump is connected to the solar water heater, and a water outlet pipeline of the solar water heater is connected to the heat storing water tank. The control device detects water outflow temperature of the solar water heater, changes temperature control strategies according to the water outflow temperature and adapts to different sunlight intensity by changing operation frequency of the directly-heated type variable-frequency heat pump or changing water supplementing speed of the water-supplementing flow regulating element, so that hot water supply requirements can be met while compressor power is reduced, equipment utilization rate is increased, and early investment cost is lowered.

The invention discloses a heat filler type deaerator with a stable deaerating function and an atomizing function. The heat filler type deaerator is characterized in that a heat-side inlet of an exhaust heat exchanger is communicated with a blowoff valve through a pipeline, a cold-side inlet of the exhaust heat exchanger is communicated with a deaerator water supply pipe, a cold-side water outlet of the exhaust heat exchanger is communicated with a deaerator water supply inlet through a pipeline, a heat-side inlet of a water outlet heat exchanger is communicated with a deaerator water outlet, a boiler water supply pump is connected to a heat-side outlet pipeline, a cold-side water inlet of the water outlet heat exchanger is communicated with the deaerator water supply pipe, a water supply pump is arranged on the deaerator water supply pipe, a differential pressure transmitter is arranged in a deaerator water tank, detected water level signals in the deaerator water tank are transmitted to a controller through the differential pressure transmitter, the controller transmits signals to a frequency converter, the frequency converter controls rotation speed of the water pump to adjust water supply, a pressure control gauge transmits pressure signals to the controller which controls opening of preheating pipeline electromagnetic valves, a temperature sensor transmits temperature signals to the controller, and then the controller controls opening of reheating steam electromagnetic valves.

The invention discloses a method of obtaining low-approach cooling water by utilizing a cooling tower. A bypass branch passage with a flow regulating valve is connected with a circulating cooling water passage of a condenser of a refrigerating unit in parallel, water from the cooling tower is pressurized by a cooling circulating pump and then is divided into two paths, the water in one path flows through the branch passage of the condenser of the refrigerating unit, and the water in the other path flows through the bypass branch passage. The cooling water from the condenser of the refrigerating unit and the cooling water from of the bypass branch passage are mixed and then enter the cooling tower for circulating cooling. A flow G1 flowing through the branch passage of the refrigerating unit is required to be determined according to a designed cooling load of a refrigerating system, a flow G2 of the bypass branch passage is determined through calculation according to an approach required by circulating cooling water, and the flow of the cooling tower is determined according to the flow G1 of the branch passage of the refrigerating unit and the flow G2 of the bypass branch passage. Through technological improvement, the method obtains the low-approach cooling water by utilizing the cooling tower, and safe operation of the refrigerating system is not affected.

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 relates to a system capable of improving a cooling effect of a cooling tower by means of reducing moisture content of air, which is characterized by comprising a cooling water subsystem of a power plant, a CO2 capturing subsystem and a liquor dehumidifying subsystem. The cooling water subsystem of the power plant and the CO2 capturing subsystem are integrated by the aid of the liquor dehumidifying subsystem, the cooling water subsystem of the power plant consists of the cooling tower (18), the CO2 capturing subsystem comprises an absorption tower (1), a rich liquor pump (7), a barren liquor heat exchanger (8), a reboiler (9), a barren liquor cooling heat exchanger (19) and a regeneration gas water cooler (20), and the liquor dehumidifying subsystem consists of a dehumidifierinlet fan (10). By the aid of the system, vacuum degree of a condenser is increased, power generation efficiency is improved, coal consumption is reduced, and influence of the CO2 capturing subsystemto efficiency of the power plant is reduced.

The invention relates to an air source heat pump double-water-tank hot water system and a control method. The air source heat pump double-water-tank hot water system comprises a variable-frequency water supply pump, a hot water tank, a warm water tank and a parallel host which are connected in sequence, and further comprises a water return valve and a water replenishing valve which are connected with the warm water tank; the hot water tank, the warm water tank and the parallel host are sequentially connected to form host-water tank circulation; the warm water tank, the hot water tank, the variable-frequency water supply pump and the water return valve are sequentially connected to form water tank-tail end circulation; and the parallel host comprises a plurality of parallel branches which are independently controlled or not independently controlled, and different heat supply modes are achieved by opening a specific number of parallel branches, so that different tail end load requirements are met. Compared with the prior art, the double-water-tank scheme is adopted, so that the mixing loss among return water, replenished water and hot water is reduced; and meanwhile, the water inlet temperature and the water outlet temperature of the heat pump are reduced, the condensation temperature of the heat pump can be well reduced, and the energy efficiency of the heat pump unit is improved while water consumption of a user is guaranteed.

Provided are a back pressure turbine vacuum deaerator system and a condensation water circulation method. The system mainly comprises: a vacuum deaerator, a condensate pump, a deironing filter, a shaft-sealing condenser, and a vacuum pump. A low-pressure steam source is used as deoxidized steam and is connected with one end of an electric check valve, and the other end converges into a path and is connected with an electric control valve. The other end of the electric control valve is connected with a check valve. The other end of the check valve is connected with a vacuum stop valve. The vacuum stop valve is connected with the deoxidizing connector of the vacuum deaerator. One end of a vacuum electric valve is connected with the condensed water outlet of the vacuum deaerator, and the other end is connected with the inlet side of the condensate pump. One end of the check valve is connected with the outlet side of the condensate pump, and the other end is connected with an electric sluice valve. The other end of the electric sluice valve is connected with a deironing filter. One end of an electric cut-off valve is connected with a bypass electric cut-off valve, and the other end is connected with the inlet of the shaft-sealing condenser. One end of the electric cut-off valve is connected with the outlet of the shaft-sealing condenser, and the other end is connected with one end of the bypass electric cut-off valve.

The invention relates to a spiral type cooling cavity of a pump, belonging to the field of cooling cavities and solving the problem that the heat exchange conductivity of a cooling cavity of the traditional pump is limited to influence the service life of a mechanical sealing part of the traditional pump. The spiral type cooling cavity provided by the invention is arranged on a pump cover of a pump and comprises a spiral type sealing cavity and the pump cover, wherein the a spiral type sealing cavity comprises a cavity bottom and a concentric spiral groove body which is integrally formed at the cavity bottom; a single-spiral cooling water channel is formed by welding the cavity bottom and the outer surface of the concentric spiral groove body with the pump cover and is internally provided with a cylindrical through hole; and one end of the single-spiral cooling water channel is connected with a cooling water inlet, and the other end is connected with a cooling water outlet. Compared with the traditional cooling cavity, the spiral type cooling cavity has a cooling length lengthened by approximately 8 times and a cooling area enlarged by approximately 2 times, thereby the conditions for the operating condition of the mechanical sealing part of the pump are improved; and in addition, the spiral type cooling cavity can also achieve the purpose of heat exchange, without being additionally provided with auxiliary measures, even when the temperature of a hot fluid medium inside the pump exceeds 250 DEG C, thereby the operating cost is reduced.

The invention relates to the technical field of floor heating, in particular to a preassembled type primary and secondary ring assembly and system applied to a floor heating hydraulic system. The assembly comprises a primary ring and a secondary ring. The primary ring is composed of an air separator, a front pipeline and a rear pipeline, wherein the two pipelines are connected with the air separator. The secondary ring comprises a water inlet circuit, a water outlet circuit and a circulating pump. The preassembled type primary and secondary ring assembly and system are characterized in that the water inlet circuit and the water outlet circuit of the secondary ring are connected with the pipelines of the primary ring through two tee valves, and the center distance between the two tee valves is four times no larger than the diameter of each pipeline of the primary ring. Hydraulic separation is achieved through loops which are mutually connected and provided with a pair of tee joints, and the distance between two tee joint centers is four times no larger than the diameter of each pipeline of the primary ring circuit. The two tee joints are close as much as possible, so that the differential pressure between the starting point and the terminal point of the secondary circuit is reduced and close to zero. The preassembled type primary and secondary ring assembly and system applied to the floor heating hydraulic system can greatly reduce energy consumption.

The invention discloses a platinum channel water cooling device which comprises a platinum channel and a channel brick wrapping the periphery of the platinum channel, wherein a cooling box is fixed tothe upper end of the channel brick through an installation fixing frame, and a water inlet structure is connected to the upper end of the cooling box. According to the invention, cooling water is continuously introduced into the top surface cooling box and the side surface cooling box through the water inlet structure and then is discharged through a Y-shaped water outlet pipe, so that the top surface and the side surface of the channel brick can be cooled, and the phenomenon of red material leakage caused by thinning of the channel brick due to high temperature is avoided.

The invention relates to a CO2 heat pump system and a method for improving thermal performance, and belongs to the field of heating and ventilation. The system comprises a gas cooler and a plate heatexchanger. The plate heat exchanger comprises a first inlet, a second inlet, a first outlet and a second outlet. The gas cooler comprises a third inlet, a fourth inlet, a third outlet and a fourth outlet. The first inlet communicates with high-temperature return water. The first outlet is connected with an inlet of a three-way valve through a circulating water pump. The first outlet is provided with a temperature measuring device. One outlet of the three-way valve is connected with the third inlet. The third outlet is connected with the second inlet. The second outlet discharges hot water. Thefourth inlet and the fourth outlet are sequentially connected with a condensing agent outlet and a condensing agent inlet. The other outlet of the three-way valve and the third inlet are sequentiallyconnected with an auxiliary refrigerating fluid inlet and an auxiliary refrigerating fluid outlet. According to the CO2 heat pump system and the method for improving the thermal performance, the temperature of the return water is reduced, the temperature difference of the two sides of the gas cooler is increased, the frosting time interval is prolonged, and the system performance is overall improved.

The invention discloses an intelligent control type heat exchange unit. The intelligent control type heat exchange unit is composed of a heat exchange unit and a PLC control cabinet used for the wholemachine control; the heat exchange unit includes a primary network circulating pipeline and a secondary network circulating pipeline with a data acquisition device connected with a plate heat exchanger; the data acquisition device is in communication connection with the PLC control cabinet; a secondary network return water pipeline of the water outlet side of a secondary network circulating pumpgroup is connected with a secondary network water supplementing pipeline with a secondary network water supplementing pump group and a first water supplementing valve; a secondary water supplementingpipeline of the water inlet side of the secondary network water supplementing pump group is connected with a water supplementing box; a primary network water supply pipeline is connected with the secondary network water supplementing pipeline of the water outlet side of the secondary network water supplementing pump group through a primary network water supply branch pipe with a two-way pump and asecond water supplementing valve; and the primary network water supply branch pipe is connected with the water supplementing box through a bypass pipe with a bypass valve. According to the intelligent control type heat exchange unit, the heat exchange efficiency is high, and the service life of the equipment is prolonged.

The invention provides a driving motor cooling system with a defrosting function and an application method. The system comprises a defroster, a radiator, a water pump and a water tank, wherein the defroster is connected with a cooling liquid outlet of a driving motor and a water inlet of the radiator, a water outlet of the radiator is connected with a water inlet of the water pump, a water outletof the water pump is connected with a cooling liquid inlet of the driving motor, and a water inlet of the water pump is further connected with the water tank. Heat of the driving motor is effectivelyutilized in the defroster, so that the problems about heat dissipation of the driving motor and the energy consumption of the defroster are solved, no extra energy consumption is needed for defrosting, resources are fully utilized, and the cost is reduced.

The invention discloses an inclined shaft freezing and cooling capacity recovery device capable of improving safe operation of an ammonia system without shutdown, which comprises a saline water system, an ammonia system, a clear water system and a completed stage frozen wall cooling capacity extraction system, the saline water system provides cooling capacity for an uncompleted stage frozen wall, the ammonia system provides cooling capacity for low-temperature saline water of the saline water system, and the clear water system provides cooling capacity for low-temperature saline water of the clear water system. The clear water system provides cold energy for high-temperature and high-pressure ammonia gas of the ammonia system, and the completed stage frozen wall cold energy extraction system provides cold energy for the clear water system. The refrigeration capacity accumulated in the freezing wall at the completed stage is extracted by additionally arranging the refrigeration capacity extraction system for the freezing wall at the completed stage, so that the inclined shaft freezing system can continuously run without shutdown, the running cost is reduced, the waste of water resources and energy is effectively avoided, and the safety of the shaft freezing system is greatly improved.