CN102080635A - Device for generating electricity by using solar energy and ground heat and using method thereof - Google Patents

Device for generating electricity by using solar energy and ground heat and using method thereof Download PDF

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Publication number
CN102080635A
CN102080635A CN 201010120318 CN201010120318A CN102080635A CN 102080635 A CN102080635 A CN 102080635A CN 201010120318 CN201010120318 CN 201010120318 CN 201010120318 A CN201010120318 A CN 201010120318A CN 102080635 A CN102080635 A CN 102080635A
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CN
China
Prior art keywords
valve
condenser
steam turbine
working medium
underground water
Prior art date
Application number
CN 201010120318
Other languages
Chinese (zh)
Inventor
章学来
施敏敏
于树轩
于美
林原培
Original Assignee
上海海事大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海海事大学 filed Critical 上海海事大学
Priority to CN 201010120318 priority Critical patent/CN102080635A/en
Publication of CN102080635A publication Critical patent/CN102080635A/en

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Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/46Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines

Abstract

The invention discloses a device for generating electricity by using solar energy and ground heat and a using method thereof. The device comprises a focusing solar heat collector, a heat accumulator, a turbine, a generator, a condenser and an underground well, wherein the focusing solar heat collector, the turbine and the condenser form a closed circulation loop through a working fluid pump and a third valve; the condensed water inlet and outlet of the condenser are connected to the underground well through a pumping pipe and a drain pipe, and the pumping pipe is provided with a cold water pump; the heat accumulator is connected in parallel with the focusing solar heat collector through a first valve and a second valve; and the power input shaft of the generator is connected with the power output shaft of the turbine. The focusing solar heat collector and the heat accumulator are used, and the working fluid is heated by using the solar energy to improve the temperature of the working medium, so the electricity generation efficiency is improved. The heat accumulator stores the solar energy by day and releases heat to continuously heat the working medium in the absence of sunlight at night, so all-weather electricity generation is realized, and the utilization efficiency of the system is improved.

Description

A kind of using method of utilizing device and this device of solar energy and geothermal power generation
Technical field
The present invention relates to a kind of solar energy that utilizes as thermal source, underground water is as the using method of electricity generating device and this device thereof of low-temperature receiver.
Background technique
Solar energy and underground water are as pollution-free, and the energy that cost is low more and more is subject to people's attention.But at present solar energy and phreatic utilization are only limited to be used to produce hot water and regulate air, seldom have both are combined use, in particular for generating.
Summary of the invention
One of technical problem to be solved by this invention is that providing a kind of at the deficiencies in the prior art organically combines solar energy and underground heat, can also play the electricity generating device of the effect of energy-conserving and environment-protective in efficient power generation.
Two of technical problem to be solved by this invention is to provide the using method of said apparatus.
The device that utilizes solar energy and geothermal power generation as first aspect present invention, comprise solar concentrating collector, thermal accumulator, steam turbine, generator, condenser, underground water well, described solar concentrating collector, steam turbine, condenser form the closed loop by working fluid pump, the 3rd valve; The condensation water inlet/outlet of condenser inserts underground water well by drinking-water pipe and waste pipe, and drinking-water pipe is provided with water supply pump; Described thermal accumulator is in parallel with described solar concentrating collector by first valve and second valve; The power input shaft of generator connects with the pto of steam turbine.
The device using method of utilizing solar energy and geothermal power generation as second aspect present invention may further comprise the steps:
1. on daytime, close first valve and second valve, open the 3rd valve; About 20-30 ℃ liquid refrigerant is sent in the solar concentrating collector by the working fluid pump pressurization; Heating by solar energy makes working medium rise to 70-80 ℃, becomes superheated vapor;
2. the superheated vapor that flows out from solar concentrating collector enters steam turbine, promotes turbine acting output power, and this power can be converted into electric power output or directly output by generator; Be still overheated gas through working medium behind the steam turbine, pressure reduces, and temperature also reduces simultaneously;
3. the gaseous working medium of being discharged by steam turbine enters in the condenser, is drawn into the underground water cooling that comes by water supply pump; Underground water after the heat exchange is back in the underground water well again;
4. the working medium that flows out from condenser is sent into the solar concentrating collector by the working fluid pump pressurization, thereby finishes cyclic process, realizes the electric power output of system;
5. during night, close the 3rd valve, open first valve and second valve, utilize the heat that stores in the thermal accumulator to come heating working medium, the Working medium gas after heating enters steam turbine, promotes the turbine acting.Gaseous working medium by steam turbine is discharged enters in the condenser, is drawn into the underground water cooling that comes by water supply pump; Underground water after the heat exchange is back in the underground water well again, finishes a circulation.
The needed electric power of whole circulation process of the present invention can be provided by system self fully, and additional power output is arranged, thereby can realize the generating of system.
The present invention adopts solar concentrating collector to absorb solar energy, and the temperature of working fluid is brought up to about 70-80 ℃, and superheated vapor drives steam turbine power generation, thereby improves systemic circulation efficient.System also will increase thermal accumulator on the basis of solar thermal collector.This thermal accumulator adopts heat pipe intensified heat transfer, and with high-efficiency thermal storage material heat accumulation.Daytime is by utilizing solar thermal collector hot machine working medium is heated and carrying out accumulation of heat by phase-change material.When not having thermal source and can utilize night, thermal accumulator is emitted heat, passes to the outer lower working fluid of temperature that passes through of pipe.Can also carry out generating state equally efficiently in night like this.
Description of drawings
Fig. 1 is the principle schematic of apparatus of the present invention.
Embodiment
Referring to Fig. 1, the device that utilizes solar energy and geothermal power generation of the present invention, comprise solar concentrating collector 1, thermal accumulator 7, steam turbine 2, generator 8, condenser 3, underground water well 6, solar concentrating collector 1, steam turbine 2, condenser 3 form the closed loop by working fluid pump 5, the 3rd valve V3 and pipeline 9; The condensation water inlet/outlet 31,32 of condenser 3 inserts underground water well 6 by drinking-water pipe 61 and waste pipe 62, and drinking-water pipe 61 is provided with water supply pump 4; Thermal accumulator 7 is in parallel with solar concentrating collector 1 by the first valve V1 and the second valve V2; The power input shaft of generator 8 connects with the pto of steam turbine 2.
In the time of by day, close the first valve V1 and the second valve V2, open the 3rd valve V3, solar concentrating collector 1 absorbs solar energy working fluid is heated, thermal accumulator 7 is absorbed and store heat by solar radiation, is heated to about 70-80 ℃ the back superheated vapor and sends into pushing turbines 2 actings in the steam turbine 2 by pipeline 9.Output power, this power can be converted into electric power output or directly output by generator.
Working medium after the acting enters condenser 3, is also finally condensed by about 19-20 ℃ underground water cooling.Liquid working substance after condensing continues circulation again by working fluid pump 5 suction solar concentrating collectors 1.Cold water is drawn into condenser 3 by water supply pump 6 and drinking-water pipe 61, and with the working substance steam condensation after the acting, the cold water after self temperature rises enters underground water well 6 by waste pipe 62 again.By the time night, close the 3rd valve V3, open the first valve V1 and the second valve V2, utilize the heat of 7 li storages of thermal accumulator to come heated working fluid, be heated to about 70-80 ℃ the back superheated vapor and send into pushing turbines 2 actings in the steam turbine 2 by pipeline 9.Output power, this power can be converted into electric power output or directly output by generator, thereby makes system also can continue generating in night.Cycle operation process by above-mentioned electricity generating device constantly is converted into electric energy with heat energy, reaches the purpose of efficiently utilizing solar energy.
Patent of the present invention has not only effectively improved generating efficiency by to solar energy and phreatic recycling, has also made full use of rich natural resource.The clear energy sources that is adopted can not pollute environment, has wide potential application prospect.

Claims (2)

1. device that utilizes solar energy and geothermal power generation, comprise solar concentrating collector, thermal accumulator, steam turbine, generator, condenser, underground water well, described solar concentrating collector, steam turbine, condenser form the closed loop by working fluid pump, the 3rd valve; The condensation water inlet/outlet of condenser inserts underground water well by drinking-water pipe and waste pipe, and drinking-water pipe is provided with water supply pump; Described thermal accumulator is in parallel with described solar concentrating collector by first valve and second valve; The power input shaft of generator connects with the pto of steam turbine.
2. the using method of device as claimed in claim 1 is characterized in that, may further comprise the steps:
(1). close first valve and second valve daytime, open the 3rd valve; About 20-30 ℃ liquid refrigerant is sent in the solar concentrating collector by the working fluid pump pressurization; Heating by solar energy makes working medium rise to 70-80 ℃, becomes superheated vapor;
(2). the superheated vapor that flows out from solar concentrating collector enters steam turbine, promotes turbine acting output power, and this power can be converted into electric power output or directly output by generator; Be still overheated gas through working medium behind the steam turbine, pressure reduces, and temperature also reduces simultaneously;
(3). the gaseous working medium by steam turbine is discharged, enter in the condenser, be drawn into the underground water cooling that comes by water supply pump; Underground water after the heat exchange is back in the underground water well again;
(4). send into the solar concentrating collector by the working fluid pump pressurization from the working medium that condenser flows out, thereby finish cyclic process, realize the electric power output of system;
(5). during night, close the 3rd valve, open first valve and second valve, utilize the heat that stores in the thermal accumulator to come heating working medium, the Working medium gas after heating enters steam turbine, promotes the turbine acting.Gaseous working medium by steam turbine is discharged enters in the condenser, is drawn into the underground water cooling that comes by water supply pump; Underground water after the heat exchange is back in the underground water well again, finishes a circulation.
CN 201010120318 2010-03-09 2010-03-09 Device for generating electricity by using solar energy and ground heat and using method thereof CN102080635A (en)

Priority Applications (1)

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CN 201010120318 CN102080635A (en) 2010-03-09 2010-03-09 Device for generating electricity by using solar energy and ground heat and using method thereof

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Application Number Priority Date Filing Date Title
CN 201010120318 CN102080635A (en) 2010-03-09 2010-03-09 Device for generating electricity by using solar energy and ground heat and using method thereof

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102287344A (en) * 2011-06-30 2011-12-21 杨善让 Novel geothermal and optothermal cogeneration system
CN103062000A (en) * 2012-12-26 2013-04-24 中国科学院工程热物理研究所 Power generation system for performing energy gradient utilization on geothermal energy and solar energy
CN103292517A (en) * 2012-03-05 2013-09-11 北京兆阳能源技术有限公司 Ground-source cooling device applicable to solar power generating system
WO2013131142A1 (en) * 2012-03-08 2013-09-12 Graphite Energy N.V. Solar and renewable/waste energy powered turbine with two stage heating and graphite body heat exchanger
CN107448367A (en) * 2017-08-08 2017-12-08 天津亿诺电气设备有限公司 Hot-water type geothermal power generation binary cycle system

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CN101270903A (en) * 2007-03-24 2008-09-24 张赋华 Energy collection-energy accumulation-energy delivery system for sun heat energy and nature cold energy
CN201251295Y (en) * 2008-06-30 2009-06-03 吴中华 Large-capacity solar storage ground temperature difference generating system
CN201301785Y (en) * 2008-11-05 2009-09-02 上海海事大学 High-efficiency ocean thermal energy power-generation device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101270903A (en) * 2007-03-24 2008-09-24 张赋华 Energy collection-energy accumulation-energy delivery system for sun heat energy and nature cold energy
CN201251295Y (en) * 2008-06-30 2009-06-03 吴中华 Large-capacity solar storage ground temperature difference generating system
CN201301785Y (en) * 2008-11-05 2009-09-02 上海海事大学 High-efficiency ocean thermal energy power-generation device

Non-Patent Citations (1)

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Title
《太阳能热利用技术》 20091030 张春阳 太阳能热利用技术 浙江科学技术出版社 252-268 1-2 , *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102287344A (en) * 2011-06-30 2011-12-21 杨善让 Novel geothermal and optothermal cogeneration system
CN102287344B (en) * 2011-06-30 2012-12-05 杨善让 Novel geothermal and optothermal cogeneration system
CN103292517A (en) * 2012-03-05 2013-09-11 北京兆阳能源技术有限公司 Ground-source cooling device applicable to solar power generating system
WO2013131470A1 (en) * 2012-03-05 2013-09-12 北京兆阳能源技术有限公司 Ground source cooling apparatus for solar energy electricity generating system
CN103292517B (en) * 2012-03-05 2015-12-09 北京兆阳光热技术有限公司 A kind of source, ground cooling device being applied to solar power system
WO2013131142A1 (en) * 2012-03-08 2013-09-12 Graphite Energy N.V. Solar and renewable/waste energy powered turbine with two stage heating and graphite body heat exchanger
CN103062000A (en) * 2012-12-26 2013-04-24 中国科学院工程热物理研究所 Power generation system for performing energy gradient utilization on geothermal energy and solar energy
CN107448367A (en) * 2017-08-08 2017-12-08 天津亿诺电气设备有限公司 Hot-water type geothermal power generation binary cycle system

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Application publication date: 20110601