32results about How to "Lower working fluid temperature" patented technology

The invention provides a pump-driven two-phase circuit device for heat dissipation of a high heat flux electronic device. Heat is collected and transported by using an endothermic process in evaporation and an exothermic process in condensation during a circulation flow process of a working medium. An evaporator for the circuit device comprises micro-channels and fins. In an area of high heat flux, the micro-channels are used to dissipate heat and increase a heat transfer coefficient of a partial area, while in an area of low heat flux, the fins are used. Due to great area difference between the micro-channel area and the fin area in the evaporator, when the working medium in the micro-channels enters the fin area, volume quickly expands and temperature of the working medium reduces, so as to help heat dissipation of the device in the fin area. By using different structures and with little resources, heat dissipation problems of devices with different powers are solved. The pump-driven two-phase circuit device for heat dissipation of the high heat flux electronic device can adapt to heat dissipation of electronic devices with different heat flux densities and can satisfy working requirements of electronic devices with a heat flux density of 50 W / cm<2> or above.

The invention discloses a supercritical carbon dioxide coal-fired circulating fluidized bed boiler, a power generation system and a power generation method. The supercritical carbon dioxide coal-firedcirculating fluidized bed boiler comprises a hearth, a separator, a tail flue and an externally-arranged type heat exchanger located in a material back section of the separator. A cooling wall and anintermediate-temperature overheater are arranged in the hearth. A high-temperature reheater and a low-temperature overheater are arranged in the externally-arranged type heat exchanger, wherein the low-temperature overheater communicates with the cooling wall and the intermediate-temperature overheater. A low-temperature reheater, a high-temperature overheater, an upper-level economizer, a lower-level economizer and an air preheater are arranged in the tail flue, wherein the high-temperature overheater communicates with the intermediate-temperature overheater, the low-temperature reheater communicates with the high-temperature reheater. The working medium of the boiler is supercritical carbon dioxide. By the adoption of the supercritical carbon dioxide coal-fired circulating fluidized bedboiler, the wall temperature of the cooing wall can be effectively controlled, it is guaranteed that the boiler safely and reliably operates, and the heat efficiency is high; a power generator set tends to be miniature, a higher load response speed is obtained, the deep peak load regulation adaptability is high, the advantages of coal resources are taken into full play, the energy utilization rate is improved, and energy safety is guaranteed.

The invention discloses a solar energy and natural gas cold energy combined supercritical power generation and energy storage coupling utilization method and device. The device comprises a solar heatcollection system, a medium-high temperature solar thermal power generation system, a natural gas low-temperature cold energy power generation system and a compressed air energy storage system. According to the method and device, through two sections of efficient supercritical power generation cycles of medium-high temperature solar thermal power generation and natural gas low-temperature cold energy power generation, low-temperature cold energy of a natural gas receiving station is used as a cold source of solar medium-high temperature solar thermal power generation to condense a working medium after acting, dead steam is used as a heat source of low-temperature power generation, waste heat is used as a cold and heat source of compressed air energy storage, stable electric power output ofsolar thermal power generation is kept through a heat storage system, user side demand response is achieved through compressed air energy storage, cold and heat complementation is achieved through aplurality of upgrading heat exchangers, power generation efficiency is improved through supercritical gas power generation, and latent heat loss is reduced.

The invention discloses a system for driving a liquid working medium to act through steam pressure belong to the technical field of steam turbines, and provides a new system for driving the liquid working medium to act with the steam pressure as power to effectively improve the heat efficiency. The system comprises an acting device, and further comprises a guide channel; the guide channel includes a steam cavity and a liquid cavity communicated with each other; the steam cavity is positioned above the liquid cavity; the guide channel is provided with a working medium inlet communicated with the steam cavity, and a working medium outlet communicated with the liquid cavity; the acting device is connected with the working medium outlet; and a cooling device for cooling the working medium is arranged between the working medium inlet and the working medium outlet in the guide channel. As the process of converting high-temperature and high-pressure steam from a gas state to liquid is before acting of the high-temperature and high-pressure steam, the vaporization latent heat of the gas-state steam working medium is not discharged in the environment, the total heat efficiency can be greatly improved, and the acting device is effectively protected.

The steam compressing refrigeration cycle device includes main cycle system comprising booster pump, condensator, expansion motor, evaporator and compressor connected successively with pipeline to output cold; and secondary cycle system comprising throttle connected across the inlet of the booster pump and the outlet of the condensator as well as the booster pump and the condensator, to further lower the temperature of the work medium in the outlet of the compressor. The expansion motor has its output torque rotating the booster pump and has isoentropic expansion to reduce the entropy of the work medium entering the condensator. The booster pump reduces the operation pressure difference and the power consumption of the compressor. Therefore, the present invention has energy efficiency near ideal inverse Carnot cycle and low hot load one compressor, and may be used widely in refrigeration cycle in air conditioner, refrigerator, etc.

The invention relates to a heat pump drying system adopting industrial circulating water as a heat source. The heat pump drying system comprises a drying case, a condenser, a compressor, an evaporator, a throttle and a fan, wherein the drying case is provided with an air inlet and an air outlet. The system further comprises a primary settling pond, a heat recovery pond and a settling pond, wherein a first heat conducting portion is arranged in the heat recovery pond, a second heat conducting portion is arranged in the evaporator, and the condenser is provided with a third heat conducting portion corresponding to the air inlet. The inlet end of the compressor communicates with the outlet end of the first heat conducting portion, and the outlet end of the compressor communicates with the inlet end of the third heat conducting portion. The inlet end of the throttle communicates with the outlet end of the third heat conducting portion, and the outlet end of the throttle communicates with the inlet end of the second heat conducting portion. The outlet end of the second heat conducting portion communicates with the inlet end of the first heat conducting portion. The inlet end of the evaporator communicates with the air outlet, and the outlet end of the evaporator communicates with the air inlet. The heat pump drying system can reduce energy consumption, improve the energy utilization rate and reduce environment pollution.

A heat exchange system, comprising an evaporator, a compressor, a condenser, and a first throttling member connected through a working fluid channel; the outlet of the evaporator is connected to the inlet of the compressor, and the outlet of the compressor connected to the inlet of the condenser, the outlet of the condenser is connected to the inlet of the first throttling member, and the outlet of the first throttling member is connected to the inlet of the evaporator; it is characterized in that: the condenser A heat replacement zone is provided between the outlet and the inlet of the first restrictor. The heat replacement area established between the condenser and the first throttling member isolates the condensation area and the evaporation area of ​​the system, while improving condensation, it also isolates the influence of condensation waste heat on the evaporation area, so that the energy efficiency of the system is greatly improved .

The invention discloses a condensation ejector which comprises an accepting chamber, a throat chamber, a mixing chamber, a dispersion chamber, a condensing chamber and an atomizing mechanism, wherein the accepting chamber is provided with a first inlet and a second inlet; one end of the throat chamber is communicated with the accepting chamber, and the throat chamber is located on the down stream of the second inlet; one end of the mixing chamber is communicated with the other end of the throat chamber, one end of the dispersion chamber is communicated with the other end of the mixing chamber, and a first outlet is formed in the other end of the dispersion chamber; the condensing chamber is arranged close to the outer side of the down stream of the mixing chamber in a surrounding mode and comprises a third inlet formed in the down stream end of the condensing chamber, a second outlet formed in the upstream of the condensing chamber, a plurality of main condensing pipes and a plurality of branch condensing pipes, one end of each of the condensing pipes extends into the mixing chamber, the extending directions of the branch condensing pipes are different, the other end of each of the branch condensing pipes is communicated with a main condensing pipe, one end of the main condensing pipe is sealed, and the other end of the main condensing pipe is communicated with the dispersion chamber through a fourth inlet in the dispersion chamber; the atomizing mechanism is provided with a plurality of nozzles formed in the position of the fourth inlet, and the atomizing mechanism is used for atomizing fluid in the main condensing pipe and spraying the fluid in the dispersion chamber.

The invention provides a simple cyclical gas turbine based on rotary detonation combustion. The simple cyclical gas turbine based on the rotary detonation combustion comprises a gas compressor, a rotary detonation combustion room, a thermojet priming tube, an ejector, a mixing set, a turbine, a load and a cold source. The rotary detonation combustion room is applied to the simple cyclical gas turbine, and the mixing set is added at the tail part of the combustion room to ensure that working medium at an inlet of the turbine does not overheat. Through utilizing the pressurizing characteristic of the rotary detonation combustion room, the power capability of the working medium at an inlet of the turbine is improved, and under the conditions that the temperature, the efficiency of assembly unit, the pressure ratio of the gas compressor are uniform, the circulation heat efficiency of the gas turbine is improved 5%-10%.

The invention relates to a transcritical CO2 heat pump air-conditioning system, including a compressor, a four-way valve, a hot water air cooler, a throttling component, an indoor cold air heat exchanger, an outdoor air-cooled heat exchanger and a liquid storage tank. The second port of the first three-way valve communicates with the second port of the second three-way valve to form a first common output port, and the third port of the first three-way valve communicates with the third port of the second three-way valve to form a second common output port ; The output end of the indoor cold air heat exchanger is connected to the first port of the first three-way valve, the output end of the outdoor air-cooled heat exchanger is connected to the first port of the second three-way valve, and the first common output end is connected to the compressor. The second common output end is connected with the liquid storage tank. In the system, two three-way valves are used instead of one four-way valve. In the conversion process of heating and cooling, only one three-way valve works independently each time. The problem of valve body leakage occurs, which improves the reliability of the transcritical CO2 heat pump air conditioning system.

The invention relates to the technical field of heat exchange, in particular to a multi-stage parallel displacement heat exchange system. It includes an evaporator, a compressor, a condenser, and a first throttling member connected through a working fluid channel; the outlet of the evaporator is connected to the inlet of the compressor, and the outlet of the compressor is connected to the condenser Inlet, the outlet of the condenser is connected to the inlet of the first throttle, and the outlet of the first throttle is connected to the inlet of the evaporator; it is characterized in that: the outlet of the condenser and the first A multi-stage parallel heat displacement zone is provided between the inlets of the throttling element. The multi-stage parallel heat replacement area established between the condenser and the first throttling member isolates the condensation area and the evaporation area of ​​the system, and at the same time enhances condensation, isolates the influence of condensation waste heat on the evaporation area, making the system Energy efficiency is greatly improved.

The invention relates to the technical field of heat exchange, in particular to a multi-stage series series displacement heat exchange system. It includes an evaporator, a compressor, a condenser, and a first throttling member connected through a working fluid channel; the outlet of the evaporator is connected to the inlet of the compressor, and the outlet of the compressor is connected to the condenser Inlet, the outlet of the condenser is connected to the inlet of the first throttle, and the outlet of the first throttle is connected to the inlet of the evaporator; it is characterized in that: the outlet of the condenser and the first A multi-stage series connection heat displacement area is arranged between the inlets of the throttling parts. The multi-stage series heat replacement area established between the condenser and the first throttling member isolates the condensation area and the evaporation area of ​​the system, and at the same time enhances condensation, isolates the influence of condensation waste heat on the evaporation area, making the system Energy efficiency is greatly improved.