Full Text:   <3316>

CLC number: TK5

On-line Access: 2012-01-18

Received: 2011-06-08

Revision Accepted: 2011-08-21

Crosschecked: 2011-12-06

Cited: 1

Clicked: 4704

Citations:  Bibtex RefMan EndNote GB/T7714

-   Go to

Article info.
1. Reference List
Open peer comments

Journal of Zhejiang University SCIENCE A 2012 Vol.13 No.2 P.140-145

http://doi.org/10.1631/jzus.A1100152


A new power generation method utilizing a low grade heat source


Author(s):  Wei-feng Wu, Xin-ping Long, Xiao-ling Yu, Quan-ke Feng

Affiliation(s):  School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China; more

Corresponding email(s):   weifengwu@mail.xjtu.edu.cn

Key Words:  Low grade heat, Power generation, Condensation, Energy storage, Renewable energy


Wei-feng Wu, Xin-ping Long, Xiao-ling Yu, Quan-ke Feng. A new power generation method utilizing a low grade heat source[J]. Journal of Zhejiang University Science A, 2012, 13(2): 140-145.

@article{title="A new power generation method utilizing a low grade heat source",
author="Wei-feng Wu, Xin-ping Long, Xiao-ling Yu, Quan-ke Feng",
journal="Journal of Zhejiang University Science A",
volume="13",
number="2",
pages="140-145",
year="2012",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1100152"
}

%0 Journal Article
%T A new power generation method utilizing a low grade heat source
%A Wei-feng Wu
%A Xin-ping Long
%A Xiao-ling Yu
%A Quan-ke Feng
%J Journal of Zhejiang University SCIENCE A
%V 13
%N 2
%P 140-145
%@ 1673-565X
%D 2012
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1100152

TY - JOUR
T1 - A new power generation method utilizing a low grade heat source
A1 - Wei-feng Wu
A1 - Xin-ping Long
A1 - Xiao-ling Yu
A1 - Quan-ke Feng
J0 - Journal of Zhejiang University Science A
VL - 13
IS - 2
SP - 140
EP - 145
%@ 1673-565X
Y1 - 2012
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1100152


Abstract: 
Energy crisis make the effective use of low grade energy more and more urgent. It is still a worldwide difficult conundrum. To efficiently recover low grade heat, this paper deals with a theoretical analysis of a new power generation method driven by a low grade heat source. When the temperature of the low grade heat source exceeds the saturated temperature, it can heat the liquid into steam. If the steam is sealed and cooled in a container, it will lead to a negative pressure condition. The proposed power generation method utilizes the negative pressure condition in the sealed container, called as a condensator. When the condensator is connected to a liquid pool, the liquid will be pumped into it by the negative pressure condition. After the condensator is filled by liquid, the liquid flows back into the pool and drives the turbine to generate electricity. According to our analysis, for water, the head pressure of water pumped into the condensator could reach 9.5 m when the temperature of water in the pool is 25 °C, and the steam temperature is 105 °C. Theoretical thermal efficiency of this power generation system could reach 3.2% to 5.8% varying with the altitude of the condensator to the water level, ignoring steam leakage loss.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

[1]Abbott, D., 2009. Hydrogen without tears: addressing the global energy crisis via a solar to hydrogen pathway. Proceedings of the IEEE, 97(12):1931-1934.

[2]Al-Kharabsheh, S., Goswami, D.Y., 2004. Theoretical analysis of a water desalination system using low grade solar heat. Journal of Solar Energy Engineering, 126(2):774-780.

[3]Anonymous, 2009. Low Grade Heat Conversion. Available from http://www-diva.eng.cam.ac.uk/energy/environmental/low_grade_heat.html [Accessed on June 1, 2011].

[4]Badr, O., O’callaghan, P.W., Probert, S.D., 1990. Rankine-cycle systems for harnessing power from low-grade energy-sources. Applied Energy, 36(4):263-292.

[5]Barna, I.F., Imre, A.R., Baranyai, G., Ézsöl, G., 2010. Experimental and theoretical study of steam condensation induced water hammer phenomena. Nuclear Engineering and Design, 240(1):146-150.

[6]Bell, M.A., 1981. Enhanced Compressed Air Storage Using Low Grade Thermal Energy. Third International Conference on Future Energy Concepts, p.77-80.

[7]Boyle, R., Greenwood, C., Hohler, A., Liebreich, M., Brien, V.S., Tyne, A., Usher, E., 2008. Global Trends in Sustainable Energy Investment: Analysis of Trends and Issues in the Financing of Renewable Energy and Energy Efficiency, UNEP/Earthprint.

[8]Ginell, W.S., McNichols, J.L., Cory, J.S., 1978. Low-grade thermal energy-conversion joule effect heat engines. Mechanical Engineering, 100(11):110-111.

[9]Ginell, W.S., McNichols, J.L., Cory, J.S., 1979. Nitinol heat engines for low-grade thermal-energy conversion. Mechanical Engineering, 101(5):28-33.

[10]Grew, K.E., Ibbs, T.L., 1952. Thermal Diffusion in Gases. Cambridge University Press, Cambridge.

[11]Holman, J.P., 2002. Heat Transfer. McGraw-Hill, New York.

[12]Hung, T.C., Shai, T.Y., Wang, S.K., 1997. A review of organic Rankine cycles (ORCs) for the recovery of low-grade waste heat. Energy, 22(7):661-667.

[13]Incropera, F.P., Dewitt, D.P., 1985. Introduction to Heat Transfer. John Wiley, New York.

[14]Li, J.M., Li, M.L., Li, Y.T., 2008. Strategies Analysis on Energy Shortage and Influence in China. Theory and Practice of Risk Analysis and Crisis Response, Proceedings, p.729-734.

[15]Li, Y.T., 1981. Nitinol Engine for Low Grade Heat. Patent No. 4302938, USA.

[16]Nag, P.K., 1981. Engineering Thermodynamics. McGraw-Hill, New Delhi.

[17]Pazdzior, A., 2010. Crisis and financial results of public companies from the energy industry in Poland. Rynek Energii, 1:80-84.

[18]Quadrelli, R., Peterson, S., 2007. The energy-climate challenge: Recent trends in CO2 emissions from fuel combustion. Energy Policy, 35(11):5938-5952.

[19]Quickenden, T.I., Hindmarsh, K.M., Teoh, K.G., 2004. Experimental study of the minto engineA heat engine for converting low grade heat to mechanical energy. Journal of Solar Energy Engineering-Transactions of the ASME, 126(1):661-667.

[20]Rolle, K.C., 2000. Heat and Mass Transfer. Upper Saddle River, Prentice-Hall, NJ.

[21]Ruhl, C., 2010. Global energy after the crisis prospects and priorities. Foreign Affairs, 89(2):63-64.

[22]Sargent & Lundy, 2003. Assessment of Parabolic Trough and Power Tower Solar Technology Cost and Performance Forecasts. SL-5641, Chicago.

[23]Schmidt, F.W., Willmott, A.J., 1981. Thermal Energy Storage and Regeneration. McGraw-Hill, New York.

[24]Wang, J.Q., Cao, W.B., 2009. Development Countermeasures of China’s Renewable Energy Industry under the Influence of Financial Crisis. Proceedings of the 3rd International Conference on Risk Management & Global E-Business, p.75-78.

[25]Wiser, R., Bolinger, M., Cappers, P., Margolis, R.., 2006. Letting the Sunshine in Solar Costs: an Empirical Investigation of Photovoltaic Cost Trends in California. Ernest Orlando Lawrence Berkeley National Laboratory, USA.

Open peer comments: Debate/Discuss/Question/Opinion

<1>

Please provide your name, email address and a comment





Journal of Zhejiang University-SCIENCE, 38 Zheda Road, Hangzhou 310027, China
Tel: +86-571-87952783; E-mail: cjzhang@zju.edu.cn
Copyright © 2000 - Journal of Zhejiang University-SCIENCE