CN103423108A - Combined power generation device through solar energy and geothermal energy - Google Patents

Combined power generation device through solar energy and geothermal energy Download PDF

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Publication number
CN103423108A
CN103423108A CN2012101597472A CN201210159747A CN103423108A CN 103423108 A CN103423108 A CN 103423108A CN 2012101597472 A CN2012101597472 A CN 2012101597472A CN 201210159747 A CN201210159747 A CN 201210159747A CN 103423108 A CN103423108 A CN 103423108A
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working fluid
power generation
fluid
combined power
geothermal
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CN2012101597472A
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CN103423108B (en
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周登荣
周剑
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周登荣
周剑
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    • 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
    • Y02E10/10Geothermal energy
    • 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 relates to a combined power generation device through solar energy and geothermal energy. The combined power generation device comprises a solar energy collecting device, a heat accumulating storage device, a heat exchanger, a steam turbine, a condenser, a condensing tower and a working source, wherein the solar energy collecting device is used for collecting the solar energy to heat first working fluid, the heat accumulating storage device is used for storing geothermal water pumped out from a geothermal well through a fluid pump, the heat exchanger is used for performing heat exchange between the first working fluid and second working fluid, the steam turbine is used for receiving the second working fluid having been heated to drive work doing for power generation and transmitting kinetic energy to a power generation device body, the condenser is connected to an outlet of the steam turbine and used for cooling the second working fluid flowing out from the steam turbine, the condensing tower is connected to the condenser, and the working source is used for conveying the second working fluid into a circulating process through a circulating pump. The combined power generation device further comprises a first throttling valve and a second throttling valve, wherein the first throttling valve can bypass the solar energy collecting device and is connected with the heat accumulating storage device and the heat exchanger, and the second throttling valve is located before or after the solar energy connecting device and used for opening or closing the first working fluid through the solar energy collecting device.

Description

A kind of combined power generation device that utilizes solar energy and geothermal power
Technical field
The present invention relates to a kind of device of solar generating, also relate to a kind of geothermal power electricity generating device, in particular to a kind of method of utilizing the combined power generation device of solar energy and geothermal power and operating this combined power generation device.
Background technique
Traditional fuel energy reduces day by day, and energy problem has become the global problem can not be ignored.Find new energy, become the task of top priority.Every day, abundant solar radiant energy was inexhaustible, nexhaustible, pollution-free, and cheapness, be the energy that the mankind can freely utilize, and becomes the optimal selection of including at first the people visual field in.Solar energy arrives the energy on ground each second up to 800,000 kilowatts, if the solar energy of earth surface 0.1% is transferred to electric energy, number turnover is 5%, and every annual electricity generating capacity can reach 5.6 * 1,012 ten thousand kilowatt hours, is equivalent at present 40 times of left and right of energy consumption in the world.China is one of abundant country of solar energy resources.There are 1,080,000 square kilometres of desert areas in China, mainly is distributed in the resourceful west area of illumination.
Meanwhile, west area (for example Tibet region) is also the main geothermal resources areal of China, utilizing geothermal power generation is the most important mode of geothermal utilization, the principle of geothermal power generation and thermal power generation is the same, be all to utilize the heat energy of steam to change mechanical energy in steam turbine, then drive the generator generating.Difference is, geothermal power generation does not resemble thermal power generation will equip huge boiler, does not also need consume fuel, and the geothermal water from 15 ℃ to 180 ℃ of scopes can be utilized.The process of geothermal power generation, at first change underground heat energy into mechanical energy exactly, and then the process transformed mechanical energy into electricity.The generating of yet solar energy and geothermal power can being joined together becomes study hotspot increasingly, not common to both being combined with in prior art yet, but its effect is predictable, it can utilize green energy resource to greatest extent, strengthen generating efficiency, reach energy-producing purpose continually.
Summary of the invention
An object of the present invention is to provide a kind of combined power generation device that utilizes solar energy and geothermal power, can realize the technique effect that not only utilizes solar energy but also utilize geothermal power.Technological scheme of the present invention can also realize round-the-clock generating supply, has stronger application prospect.
Technological scheme of the present invention is, a kind of combined power generation device that utilizes solar energy and geothermal power, and it comprises: solar collector, it is for gathering solar thermal energy to heat the first working fluid; The accumulation of heat storage, it is for storing the geothermal water of extracting out by fluid pump from geothermal well; Heat exchanger, it is for heat exchange the first working fluid and the second working fluid; Steam turbine, it promotes the acting generating for the second working fluid received after heating, by transport of kinetic energy to electricity generating device; Condenser, it is connected to the outlet of steam turbine, for cooling the second working fluid flowed out from steam turbine; Condensing tower, it is connected on condenser; Operation source, it is characterized in that for carry the second working fluid to cyclic process by recycle pump this device also comprises: the first throttle valve, this first throttle valve can the bypass solar collector, with the accumulation of heat storage, with heat exchanger, is connected; The second throttle valve, it is positioned at upstream or the downstream of solar collector, for opening or closing the first working fluid and pass through solar collector.
Above-mentioned the first working fluid is hot water or through the geothermal water after purifying primitively.
The preferred low-boiling point material of above-mentioned the second working fluid, as fluorine Lyons, isopentane, isobutane, normal butane, chlorobutane etc.
This device can also comprise the lens devices (not shown) that is arranged on the solar collector top, is used for reflecting or assembling solar energy as much as possible, to be used for heated working fluid.
This device can also comprise filter, and it is positioned at the fluid pump downstream, and the geothermal water of extracting out for purification filtering prevents that chemical impurity from entering cyclic process and corroding equipment.
A kind of method that operates the above-mentioned combined power generation device that utilizes solar energy and geothermal power, by day or during fine day, open the second fluid valve, closes the first fluid valve, and, when night or rainy day, open the first fluid valve, closes the second fluid valve.
The technique effect of technical solution of the present invention is, can utilize the low-temperature heat energy of general 30 ~ 50 ℃ of left and right of temperature, realize the generating requirement at round-the-clock (daytime or night), guaranteed the stability of system, its thermal efficiency is higher, facility compact, and the size of steam turbine is little, be easy to adaptation and learn the geothermal water of comparison of ingredients complexity, greatly provide cost savings.
The accompanying drawing explanation
Next, by preferred embodiment and with reference to accompanying drawing, technological scheme of the present invention is illustrated.
Fig. 1 means the combined power generation device schematic diagram that utilizes solar energy and geothermal power according to of the present invention.
Embodiment
What Fig. 1 showed is the combined power generation device 100 that utilizes solar energy and geothermal power according to of the present invention, and it comprises: solar collector 101, and it is for gathering solar thermal energy to heat the first working fluid; Accumulation of heat storage 102, it is for storing the geothermal water of extracting out by fluid pump 201 from geothermal well 103; Heat exchanger 104, it is for heat exchange the first working fluid and the second working fluid; Steam turbine 105, it is for receiving the second working fluid after heating to promote the acting generating, thus transport of kinetic energy is to electricity generating device 108; Condenser 106, it is connected to the outlet of steam turbine 105, for cooling the second working fluid flowed out from steam turbine; Condensing tower 107, it is connected on condenser 106; Operation source 109, it is for carrying the second working fluid to cyclic process by recycle pump 202, it is characterized in that this device also comprises: throttle valve 301, this throttle valve 301 can bypass solar collector 101, with accumulation of heat storage 102, with heat exchanger 104, is connected; Throttle valve 302, it is positioned at upstream or the downstream of solar collector 101, for On/Off the first working fluid, passes through solar collector 101.
The working procedure of technical solution of the present invention is, by day or fine day illumination applicable the time, open fluid valve 302, close fluid valve 301, to make the first working fluid be geothermal water (general 40 ~ 50 ℃ of left and right of temperature) from geothermal well 103 is extracted out after accumulation of heat storage 102, again enter solar collector 101 and continue heating, temperature working fluid after solar collector 101 heating can reach between 70 ~ 80 ℃, the first working fluid enters heat exchanger 104 from solar collector flows out and the second working fluid carries out heat exchange, this second working fluid is preferably low-boiling point material, as fluorine Lyons, isopentane, isobutane, normal butane, chlorobutane etc.The first working fluid after heat exchange (general 15 ~ 30 ℃ of left and right of temperature) flows back to geothermal well or separately uses it for anything else, and above process can be summarized as the heat integration process.Below power generation system cyclic process again: the second working fluid is transported in circulation loop by recycle pump 202 from working medium source 109, form and directly form or vaporize in additional steam generator after the heating of over-heat-exchanger 104, the low boiling working fluid steam produced is directly sent into steam turbine 105 and is generated electricity.Finish the second working fluid steam after merit, discharged by steam turbine 105, and be condensed into liquid in condenser 106, then through recycle pump 202 recirculated works.
There is no sunlight when night or rainy day, now close fluid valve 302, open fluid valve 301, to make the first working fluid be geothermal water (general 40 ~ 50 ℃ of left and right of temperature) from geothermal well 103 is extracted out after accumulation of heat storage 102, again enter solar collector 101 and continue heating, make the first working fluid from geothermal well 103 is extracted out after accumulation of heat storage 102, no longer enter solar collector 101 and continue heating, but directly enter heat exchanger 104 and the second working fluid carries out heat exchange, other working procedure are identical during with daytime or fine day, although when the first temperature working fluid now has daytime or fine day, efficiency is not high, but still can meet power generation needs.
In addition, this device can also be included in solar collector 101 tops the lens devices (not shown) is set, and is used for reflection or assemble solar energy as much as possible, is used for heated working fluid.
The all right filter 200 of this device, it is positioned at fluid pump 201 downstreams, and the geothermal water of extracting out for purification filtering, prevent that chemical impurity from entering cyclic process, erosion equipment.
It should be noted that, in order better to describe technological scheme core content of the present invention, too much do not mention other unnecessary feature description, the NM ins and outs of relevant the present invention are the known technology in related domain, for example the model of the Selective type of solar collector, filter, fluid pump and other component.
In technique scheme, the advantage of electricity-generating method is, can utilize low-temperature heat energy, realizes round-the-clock generating requirement, guaranteed the stability of system, its thermal efficiency is higher, facility compact, the size of steam turbine is little, is easy to the geothermal water that adaptation is learned the comparison of ingredients complexity, greatly provides cost savings.The invention is not restricted to top application, in the various possible scopes that are modified in dependent claims.

Claims (8)

1. a combined power generation device that utilizes solar energy and geothermal power, it comprises: solar collector, it heats the first working fluid for gathering solar thermal energy; The accumulation of heat storage, it is for storing the geothermal water of extracting out by fluid pump from geothermal well; Heat exchanger, it is for heat exchange the first working fluid and the second working fluid; Steam turbine, it is for receiving the second working fluid after heating to promote the acting generating, by transport of kinetic energy to electricity generating device; Condenser, it is connected to the outlet of steam turbine, for cooling the second working fluid flowed out from steam turbine; Condensing tower, it is connected on condenser; Operation source, it is for carrying the second working fluid to cyclic process by recycle pump; It is characterized in that, this device also comprises: the first throttle valve, and this first throttle valve can the bypass solar collector, with the accumulation of heat storage, with heat exchanger, is connected; The second throttle valve, it is positioned at upstream or the downstream of solar collector, for opening or closing the first working fluid and pass through solar collector.
2. combined power generation device as claimed in claim 1 is characterized in that: described the first working fluid is hot water or the geothermal water after purifying primitively.
3. combined power generation device as claimed in claim 1, it is characterized in that: described the second working fluid is low-boiling point material.
4. combined power generation device as claimed in claim 3, it is characterized in that: described low-boiling point material is any one in fluorine Lyons, isopentane, isobutane, normal butane, chlorobutane.
5. combined power generation device as claimed in claim 1 is characterized in that: this device also comprises the lens devices that is arranged on the solar collector top, and it is used for reflection or assemble solar energy as much as possible, is used for heating described the first working fluid.
6. combined power generation device as claimed in claim 1, it is characterized in that: this device also comprises filter, and it is positioned at the fluid pump downstream, and the geothermal water of extracting out for purification filtering prevents that chemical impurity from entering cyclic process and corroding equipment.
7. a method that operates the described combined power generation device of any one in the claims 1-6, is characterized in that, by day or during fine day, opens the second fluid valve, closes the first fluid valve.
8. method as claimed in claim 7, is characterized in that, when night or rainy day, opens the first fluid valve, closes the second fluid valve.
CN201210159747.2A 2012-05-22 2012-05-22 A kind of combined power generation device utilizing solar energy and geothermal power Active CN103423108B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104612920A (en) * 2015-02-03 2015-05-13 攀枝花学院 Tower type solar high-low temperature complementary power generation system
WO2018102265A1 (en) * 2016-11-29 2018-06-07 COMBINED POWER LLC, dba HYPERLIGHT ENERGY Systems and methods of storing energy from geothermal and solar resources

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090121488A1 (en) * 2007-11-08 2009-05-14 Mohinder Singh Bhatti Electric power generation system driven by solar flux and geocooling
US20090320473A1 (en) * 2008-06-30 2009-12-31 Ormat Technologies, Inc. Multi-heat source power plant
CN201650630U (en) * 2010-03-09 2010-11-24 上海海事大学 Device generating electricity by solar energy and terrestrial heat
CN102235332A (en) * 2010-04-27 2011-11-09 李化成 Solar photo-thermal vapor-liquid two-phase flow thermal expansion power generating system
CN202545152U (en) * 2012-05-22 2012-11-21 周登荣 Combined solar and geothermal power generation device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090121488A1 (en) * 2007-11-08 2009-05-14 Mohinder Singh Bhatti Electric power generation system driven by solar flux and geocooling
US20090320473A1 (en) * 2008-06-30 2009-12-31 Ormat Technologies, Inc. Multi-heat source power plant
CN201650630U (en) * 2010-03-09 2010-11-24 上海海事大学 Device generating electricity by solar energy and terrestrial heat
CN102235332A (en) * 2010-04-27 2011-11-09 李化成 Solar photo-thermal vapor-liquid two-phase flow thermal expansion power generating system
CN202545152U (en) * 2012-05-22 2012-11-21 周登荣 Combined solar and geothermal power generation device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104612920A (en) * 2015-02-03 2015-05-13 攀枝花学院 Tower type solar high-low temperature complementary power generation system
CN104612920B (en) * 2015-02-03 2017-06-09 攀枝花学院 Tower type solar high/low temperature complementary power generation system
WO2018102265A1 (en) * 2016-11-29 2018-06-07 COMBINED POWER LLC, dba HYPERLIGHT ENERGY Systems and methods of storing energy from geothermal and solar resources

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