Performance investigation of solar evacuated tube collector using TRNSYS in Tehran

Ahmadreza Mohammadkarim, Alibakhsh Kasaeian, Abdolrazagh Kaabinejadian

Abstract


Outlet temperature of the collector for efficiency of water-in-glass evacuated tube solar domestic hot water system with natural circulation is generally more than the flat plate collector systems. Additionally, this type of evacuated tube solar collectors with the free circulation is economically cheaper than heat pipes collector systems, this system is widely used in the world. This paper is dedicated to simulation of evacuated tube solar water heating system with natural circulation under the climatic conditions in Tehran city with TRNSYS software. Diagram of the components used in the simulation of the TRNSYS has fully been studied including Type71 for evacuated tube collector with horizontal tank above it with natural circulation and five nodes in the vertically tank stratified in order to control the temperatures out of the collector. Vertical tank increases the tank temperature out of the collector for the household uses. After the simulation we obtain the regression linear curve of the efficiency of the evacuated tube solar domestic hot water system against heat loss of this system in spring and summer seasons with the solar irradiation and mean and ambient temperature in each selected day.

Keywords


Evacuated Tube; Solar Collector; Thermosyphon Flow; Natural Circulation; Efficiency

Full Text:

PDF

References


I. Budihardjo, G.L. Morrison, “Performance of water-in-glass evacuated tube solar water heatersâ€, Solar Energy. Sydney. Australia, vol. 83, pp. 49-56, June 2008.

T.T. Chow, Z. Dong, L.S. Chan and K.F. Fong and Y. Bai, “Performance evaluation of evacuated tube solar domestic hot water systems in Hong Kongâ€, Energy and Building. Hong Kong. China, vol. 43, pp. 3467-3474, September 2011.

M. Hayek, J. Assaf, W. Lteif, “Experimental Investigation of the Performance of Evacuated Tube Solar Collectors under Eastern Mediterranean Climatic Conditionsâ€, Energy Procedia. Zouk-Mikael. Lebanon, vol. 6, pp. 618-626, 2011.

R. Tang, Y. Yang, W. Gao, “Comparative studies on thermal performance of water-in-glass evacuated tube solar water heaters with different collector tilt-anglesâ€, Solar Energy.

Kunming 650092. PR China, vol. 85, pp. 1381-1389, March 2011.

R. Tang, W. Gao, Y. Yu and H. Chen, “Optimal tilt-angles of all-glass evacuated tube solar collectorsâ€, Energy. Kunming 650092. PR China, vol. 34, pp. 1387-1395, June 2009.

G.L. Morrison, I. Budihardjo, M. Behnia, “Measurement and simulation of flow rate in a water-in-glass evacuated tube solar water heaterâ€, Solar Energy. Sydney. Australia, vol. 78, pp. 257-267, September 2004.

I. Budihardjo, G.L. Morrison, M. Behnia, “Natural circulation flow through water-in-glass evacuated tube solar collectorsâ€, Solar Energy. New South Wales. Australia, vol. 81, pp. 1460-1472, March 2007.

G.L. Morrison, I. Budihardjo, M. Behnia, “water-in-glass evacuated tube solar water heatersâ€, Solar Energy. New South Wales. Australia, vol. 76, pp. 135-140, July 2003.

L.M. Ayompe, A. Duffy, “Thermal performance analysis of a solar water heating system with heat pipe evacuated tube collector using data from a field trialâ€, Solar Energy. Dublin. Ireland, vol. 90, pp. 17-28, January 2013.

D. A.G.Redpath, P. C.Eames, S. N.G.Lo and P. W.Griffiths, “Experimental investigation of natural convection heat exchange within a physical model of the manifold chamber of a thermosyphon heat-pipe evacuated tube solar water heaterâ€, Solar Energy. Coventry. England, vol. 83, pp. 988-997, January 2009.

S.B. Riffat, X. Zhao, P.S. Doherty, “Developing a theoretical model to investigate thermal performance of a thin membrane heat-pipe solar collectorâ€, Applied Thermal Engineering. Nottingham. UK, vol. 25, pp. 899-915, August 2004.

C.C. Chien, C.K. Kung, C.C. Chang, W.S. Lee, C.S. Jwo and S.L. Chen, “Theoretical and experimental investigations of a two-phase thermosyphon solar water heaterâ€, Energy. Taipei. Taiwan, vol. 36, pp. 415-423, October 2010.

M. Aram, M. Soltanieh, M.B. Shafii, “Experimental investigation of extra-long pulsating heat pipe application in solar water heatersâ€, Experimental Thermal and Fluid Science. Tehran. Iran, vol. 42, pp. 6-15, March 2012.

I.A. Odigwe, O.O. Ologun, O.A. Olatokun, A.A. Awelewa, A.F. Agbetuyi and I.A. Samuel, “A microcontroller-based active solar water heating system for domestic applicationsâ€, International Journal of renewable energy research. Nigeria, vol. 4, pp. 837-845, November 2013.

O. Ibrahim, F. Fardoun, R. Younes, H. Louahlia-Gualous, “Review of water-heating system: General selection approach based on energy and environmental aspectsâ€, Building and Environment. Beirut. Lebanon, vol. 72, pp. 259-286, September 2013.

I. Budihardjo, G.L. Morrison, M. Behnia, “Development of TRNSYS models for predicting the performance of water-in-glass Evacuated Tube Solar Water Heaters in Australiaâ€, Destination Renewables-ANZSES 2003 Conference. New South Wales. Australia, pp. 1-10, 2003.

L.M. Ayompe, A. Duffy, M. Mc Keever, M. Conlon, S.J. McCormack, “Comparative field performance study of flat plate and heat pipe evacuated tube collectors (ETCs) for domestic water heating systems in a temperate climateâ€, Energy. Dublin. Ireland, vol. 36, pp. 3370-3378, March 2011




DOI (PDF): https://doi.org/10.20508/ijrer.v4i2.1294.g6304

Refbacks

  • There are currently no refbacks.


Online ISSN: 1309-0127

Publisher: Gazi University

IJRER is cited in SCOPUS, EBSCO, WEB of SCIENCE (Clarivate Analytics);

IJRER has been cited in Emerging Sources Citation Index from 2016 in web of science.

WEB of SCIENCE in 2025; 

h=35,

Average citation per item=6.59

Last three Years Impact Factor=(1947+1753+1586)/(146+201+78)=5286/425=12.43

Category Quartile:Q4