J. Zhu et al. / Energy 93 (2015) 466e483
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Geothermal Resources In China
The distribution map of geothermal resources in China
J. Zhu et al. / Energy 93 (2015) 466e483
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Sedimentary basins resources Total: 6.93 10 kwh / yr ↔ 853 10 million tons of standard coal Sichuan Basin : 31.2% North China Plain : 21.7% Weihe River-Yuncheng Basin : 14.6%
The origin of geothermal power generation
Ginori Conti
• Boric acid business at Larderello • Generate electricity and save the cost
地热能发电与地源热泵技术
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Catalogue
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Background Introduction
J. Zhu et al. / Energy 93 (2015) 466e483
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Background Introduction
It is critical for China to utilize geothermal energy for sustainable development, as China is the largest country in energy consumption and the second largest economy in t he world!
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• Hot dry rock resources Total: 7.00 10 kwh / yr
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856 10 million tons of standard coal
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J. Zhu et al. / Energy 93 (2015) 466e483
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Geothermal Utilization In China
Geothermal power generation
• 1970 : The first geothermal power generation station was established. • 1971 : The first geothermal binary power station was constructed. • The late 1970s : Several industrial geothermal power plants using high temperature resources were built in Tibet. • 1977-1991 : 9 test units station with capacity of MWe was installed. • 2014 : the total installed capacity of geothermal power stations is 35.38 MWe including stations in Taiwan. All the work done before, especially on medium-low temperature geothermal power technology will certainly provide technical support for China's geothermal power gener ation in the future!
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The Classification of Geothermal Power Plant
Dry steam plants
Dry steam, cleaning steam（Acidic gases，Diss olved solids） Main type Back pressure turbine power generation（背压 式） Condensing steam turbine power generation（凝 汽式）
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The Classification of Geothermal Power Plant
Binary-cycle plants
• Low boiling point substance, Chloroethane(氯乙烷) n-Butane(正丁烷) • Steam of working medium
Main type Single-binary-cycle plants Double-binary-cycle plants
Lu T, Gao X W, Wang X D, et al. The geothermal power and main technical problems[C]// International Conference on Sustainable Power Generation and Supply, 2009. Supergen. IEEE, 2009:1-4.
→ Problems in the engine
Not successful
Dipippo R. Geothermal power plants: Evolution and performance assessments[J]. Geothermics, 2015, 53:291-307.
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The Evolution of Geothermal Power Plant
J. Zhu et al. / Energy 93 (2015) 466e483
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地热发电技术
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地热发电的分类及发展过程 The Classification and Evolution of Geothermal Power Plant
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The Classification of Geothermal Power Plant
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Geothermal Utilization In China
Hot dry rock resources
At present, the exploitation of HDR resources in China is in its infancy
Geothermal gradient in China (°C/km).
GSHP application area in China, 2006-2014
J. Zhu et al. / Energy 93 (lization In China
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Direct utilization Geothermal district heating Hot spring bath and medical care Greenhouse and aquaculture Industrial utilization and crop drying
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Geothermal Resources In China
Assessment of geothermal resources
• Shallow geothermal resources Total : 77.110 kwh / yr ↔ 9.486 10 million tons of standard coal Recovery: 2.89 10 kwh / yr ↔ 356 million tons of standard coal
J. Zhu et al. / Energy 93 (2015) 466e483
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Geothermal Utilization In China
Direct utilization
• Geothermal source heat pump
The first GSHP project was the application for New Henderson Building in Beijing in 1995,There is a rapid development of GSHP application in the 21st century.
At present, more and more studies focus on seasonal energy storage, integration of u sing hybrid systems and saving energy in buildings, system control strategy, and heat p umps using CO₂ as a working fluid!
Lu T, Gao X W, Wang X D, et al. The geothermal power and main technical problems[C]// International Conference on Sustainable Power Generation and Supply, 2009. Supergen. IEEE, 2009:1-4.
Dry steam plants
Flash-steam plants
Binary-cycle plants
Yari M. Exergetic analysis of various types of geothermal power plants[J]. Renewable Energy, 2010, 35(1):112-121.
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The Classification of Geothermal Power Plant