Co-generation system of geothermal energy and solar energy organic Rankine cycle
A Rankine cycle and combined heat and power technology, applied in the field of thermal energy devices, can solve the problems of low comprehensive energy utilization efficiency of the system, low power generation efficiency of the system, large cold end loss, etc. The effect of reducing cold junction losses
Pending Publication Date: 2020-06-19
南京天加能源科技有限公司
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Problems solved by technology
[0004] At present, the conventional geothermal power generation system has a low comprehensive energy utilization efficiency, resulting in waste of heat
The main reasons are: 1) The temperature at the inlet of the expander is not high, and the power generation efficiency of the system is low; 2) The exhaust gas of the expander releases heat through the condenser, and the loss at the cold end is large
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[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0021] Such as figure 1 shown.
[0022] A combined heat and power system of geothermal energy and solar organic Rankine cycle, including a production well 1, a recharge well 17, a flash separator 4, a solar heat collector 2, a heat accumulator 5, an evaporator 6, and a primary preheater Heater 9 , secondary preheater 8 , expander 12 , generator 13 , heat network heat exchanger 14 and heat user 16 .
[0023] The inlet of the flash separator 4 is connected to the production well 1, its outlet I is connected to the reinjection well 17 after passing through the secondary preheater 8, and its outlet II is connected to the reinjection well 17 after passing through the first-stage preheater 9 , forming a geothermal energy system. The flash separator 4 can be an SZ-2 medium temperature flash separator.
[0024] The exhaust port of the expander 12 passes thr...
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The invention relates to a co-generation system of geothermal energy and solar energy organic Rankine cycle. The co-generation system comprises a Rankine cycle system formed by a flash separator, an evaporator, a secondary preheater, an expander and a generator, wherein an inlet of the flash separator is connected with a production well, an outlet I of the flash separator passes through a first pipeline of the secondary preheater and then is connected with a recharge well, and an outlet II of the flash separator is connected with the recharge well; an exhaust port of the expander sequentiallypasses through a second pipeline of the secondary preheater and a second pipeline of the evaporator and then is connected with an inlet of the expander; a first pipeline of the evaporator is connectedwith a second pipeline of a heat accumulator to form a circulation loop; a first pipeline of the heat accumulator is connected with a solar heat collector to form a circulation loop; and the expanderis connected with the generator. According to the co-generation system of geothermal energy and solar energy organic Rankine cycle, the inlet temperature of the expander can be improved, and the power generation efficiency is improved; and meanwhile, the cold end loss of the expander can further be eliminated, and the energy utilization rate is improved.
Description
technical field [0001] The invention relates to a thermal energy device, in particular to an improved organic Rankine cycle thermoelectric system, in particular to a combined heat and power system of geothermal energy and solar energy organic Rankine cycle. Background technique [0002] Renewable energy mainly includes wind energy, solar energy, water energy, biomass energy, geothermal energy and other energy sources. With the depletion of fossil fuels, vigorously developing renewable energy is an urgent requirement at present, and the rational development and utilization of geothermal energy and biomass energy has attracted more and more attention from the state and industry. [0003] As a kind of renewable energy, geothermal energy has the characteristics of large reserves, low carbon, and cleanness. It can provide stable and continuous heat regardless of cloudy or sunny day and night. Based on the world's annual consumption of 10 billion tons of standard coal, the heat o...
Claims
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IPC IPC(8): F03G4/00F03G6/06F01K25/10F01K17/02
CPCF03G7/04F03G6/067F01K25/10F01K17/02Y02E10/10Y02E20/14Y02E10/46
Inventor 袁智威李健
Owner 南京天加能源科技有限公司