Patents
Literature
Eureka-AI is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Eureka AI

1231results about "Steam use" patented technology

Method for recovering waste heat of thermal power plant and heating and supplying heat to hot water in a stepping way

The invention discloses a method for recovering the waste heat of a thermal power plant and heating and supplying heat to hot water in a stepping way. In the method, low-temperature heat-net return water is firstly mixed with circulating cooling water positioned on an outlet of a cooling condenser or exchanges heat with the circulating cooling water positioned on the outlet of the cooling condenser to be increased in temperature and then sequentially delivered into an each-step vapour absorption type heat pump and a vapor-water heat exchanger in a series connection way to be gradually heated to be increased in temperature to heat supplying temperature and finally discharged through a water supplying pipeline; the circulating cooling water absorbs the waste steam condensation heat of a steam turbine in the cooling condenser, then one path of the circulating cooling water is directly mixed with the low-temperature heat-net return water or heats the low-temperature heat-net return water through the heat changer, the other path of the circulating cooling water is delivered into an each-step absorption type heat pump unit to be used as a low-order heat source of the absorption type heat pump unit, and the redundant heat of the circulating cooling water is discharged to the environment through a cooling tower. The invention uses the steam extraction of the steam turbine as a driving heat source of the absorption type heat pump so that the low-temperature heat-net return water is heated in a stepping way, thereby reducing the effective energy loss; the waste heat of the discharged steam of the steam turbine is sufficiently recovered in a direct heating way and an absorption type heat pump temperature increasing heating way, therefore, the comprehensive energy usage efficiency of the thermal power plant is enhanced.
Owner:TSINGHUA UNIV +1

Power generation methods and systems

A closed loop system for generating mechanical energy at high efficiencies from hydrogen, fossil fuels, bio-fuels, solar or other renewable and recoverable energy sources. The system can have a heating source, a superheater, an expander, a receiver, a condenser, vacuum pump, or absorber, a desorber, and regenerator with pumps and controls. The heating source and superheater are used to heat a working fluid (including ammonia, other refrigerants, a combination of refrigerants, or steam). A positive displacement liquid/vapor expander expands the heated working fluid to the near saturated or saturated state utilizing a reduced pressure, low-pressure, or sub-atmospheric exhaust sink. A condenser, vacuum pump, or absorber is used to generate the reduced pressure, low pressure, or sub-atmospheric sink. The desorber is used to reconstitute inlet vapor (for reuse) and the regenerator recovers heat generated by the process. The system can generate mechanical energy (or power) which can be used to drive a wide range of mechanical systems (including pumps, compressors, vehicles, conveyances, or other similar mechanical devices); or used to drive an electrical generator to meet electrical power needs-for residences, businesses or office buildings, or commercial and industrial applications. The system can supply electrical energy to power grids, and can be an alternative to power generation plants.
Owner:RES SCI

Energy-saving heat supply system with function of reducing temperature of heat supply return water

The invention discloses an energy-saving heat supply system with a function of reducing the temperature of heat supply return water, and belongs to the field of improvement of energy utilization efficiency. Heat exchange can be repeatedly carried out on heat sources by multistage heat exchangers, multistage absorption heat exchange units, multistage compression heat pumps and an ice making type refrigerator, accordingly, the heat supply areas can be enlarged, and the energy utilization efficiency can be improved. The energy-saving heat supply system has the advantages that the temperature of the return water of heat supply primary pipe networks can be reduced and reach 0 DEG C, the return water contains 10% of ice particles, accordingly, route heat loss of the return water of the heat supply primary pipe networks can be reduced, the temperature difference of the return water of the heat supply primary pipe networks can be increased and reaches 118 DEG C from the original 60 DEG C, the flow rate of circulating water of the heat supply primary pipe networks can be lowered, energy consumption of circulating pumps can be reduced, heat supply flow rates of a user side can be greatly increased, the delivery efficiency of the pipe networks can be improved, the heat supply scale can be expanded, waste heat of a cooling tower can be recycled, and the like.
Owner:DALIAN BAOGUANG ENERGY SAVING AIR CONDITIONING EQUIP

Hydraulic-compression power cogeneration system and method

A system and method for converting kinetic energy into useable thermal energy by means of a gas compression based cogeneration. Kinetic forces applied, that are coupled to kinetic components of electro-mechanic thrusters 3, 49-input side, and upper small area pistons 7, 53-receiving side transmitted by shafts 4 and 50 get multiplied through Pascal hydraulic oil links 16 and 17, that are between the lower side small area pistons 12, 58 and lower side large area pistons 21, 60. At least two compression chambers are used to compress gas therein repeatedly to increase the pressure and temperature of the same. Auxiliary compressors 41, 73 help to increase temperature of compressed gas further. Said heat generated is conducted into a single liquid sodium thermal storage volume 36 that facilitates a highly stable thermal storage volume and contains working gas spiral sections 35, 39 circulating within. Steam 113 generated within spiral sections 35, 39 generates power in turbines 99, 106 and then heat residential and/or commercial buildings 115. Service hot-water is provided utilizing a water tank 85 and refrigerant coil circulation oil volume 92, both utilize thermal storage volume 36 waste heat by conduction for a triple integrated system. The system may also be combined with other power generation systems. In second embodiment 121 with more than two units of compression chambers and higher capacity, low cost electric power generated enables efficient hydrogen mass production. A thermo-physical cogeneration system with central heating means, and a cogeneration power plant 121 with hydrogen mass production and hydrogen storage capabilities; are presented as what are new in the art.
Owner:ZABTCIOGLU FIKRET M

Engine driven power inverter system with cogeneration

A combined heat and AC power generating system is disclosed having black start capability for the full time, simultaneous production of both electricity and heat. Heat generated within the system is captured and used for heating applications such as heating building air and tap water. The power generating system comprises an engine, generator, rectifier, variable frequency drive inverter, and inverter control electronics. The system provides improved efficiency and prolonged engine life by always operating the engine with its throttle fully open to obtain maximum efficiency and the engine is normally operated near its stall point. In this operating state the inverter control electronics adjust the power output from the inverter to control the speed of the engine. This is done by increasing the power output from the inverter when the power drawn by the load decreases. This causes the engine to operate closer to its stall point and it slows down. The power from the inverter is decreased when the power drawn by the load increases. This causes the engine to operate further from its stall point and it speeds up. The slight power changes to facilitate this operation will always be drawn from or distributed to the electric utility grid so there is no wasted power. The inverter control electronics are responsive to signals from loads such as refrigeration loads to cause the frequency of the inverter output to change to permit the refrigeration load to operate more efficiently.
Owner:TECOGEN

System for converting solar radiation into electricity

A system is provided for converting thermal energy derived from a solar field into electricity. The system is adapted to operate in accordance with at least two modes of operation, depending upon the thermal energy intake, and comprises: a first power generation sub-system comprising means to heat water into superheated steam by exchanging heat with a first heat transfer fluid being heated at the solar radiation collecting field, and a back pressure turbine for producing electricity; a second power generation sub-system comprising means to heat a second working fluid, and the second working fluid is used to operate a second turbine for producing electricity; and wherein the system is characterized in that when the thermal energy received at the first power generation sub-system exceeds a predetermined threshold of a selected criterion, both power generation sub-systems are operative to produce electricity and at least part of the heat required to heat the second working fluid is derived from exhaust steam being produced at the first power generation sub-system, whereas when the thermal energy received at the first power generation sub-system does not exceed that threshold, the thermal energy conveyed by the first heat transfer fluid is used essentially to heat the second working fluid and the electricity is generated only by the second power generation sub-system.
Owner:MITTELMAN GUR

Combined-cycle combined heat and power system

The invention provides a combined-cycle combined heat and power system, which comprises a steam turbine, an afterheat boiler and a heat network steam extraction system, wherein the steam turbine comprises a high-pressure cylinder, an intermediate-pressure cylinder and a low-pressure cylinder, the afterheat boiler comprises a high-pressure steam drum, an intermediate-pressure steam drum and a low-pressure steam drum, the three steam drums respectively generate three flows of steam, high-pressure steam, intermediate-pressure steam and low-pressure steam are respectively injected into the high-pressure cylinder, the intermediate-pressure cylinder and the low-pressure cylinder to apply work through expansion, and a generator is driven to output electric energy. A high-discharge check valve is arranged on a steam discharge pipeline of the high-pressure cylinder, and the heat network steam extraction system designed for heating is arranged at the downstream part of the high-discharge check valve and comprises two regulating valves in parallel connection, wherein the first regulating valve is connected with a first-stage temperature and pressure reduction device used for realizing the primary steam extraction regulation of the steam turbine, and the second regulation valve is connected with a pipeline arranged between an intermediate-pressure steam generator and an intermediate-pressure superheater through a cold reheating pipeline. Compared with a traditional combined cycle combined heat and power system, the combined-cycle combined heat and power system provided by the invention has the advantages that the operation efficiency is high, the generating efficiency is high, and high-quality energy source waste is little.
Owner:SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products