THERMAL SCIENCE

International Scientific Journal

SOLAR ENERGY CONTRIBUTION TO THE ENERGY DEMAND FOR AIR CONDITIONING SYSTEM IN AN OFFICE BUILDING UNDER TRIPOLI CLIMATE CONDITIONS

ABSTRACT
The feasibility of solar assisted air conditioning in an office building under Tripoli weather conditions is investigated in this paper. A single-effect lithium bromide absorption cycle powered by means of flat-plate solar collectors was modeled in order to predict the potential of the solar energy share. The cooling load profile was generated by using an detailed hourly based program and Typical meteorological year for Tripoli. System performance and solar energy fraction were calculated by varying two major parameters (collector’s slope angle and collector area). The maximum solar fraction of 48% was obtained by means of 1400 m2 of collector surface area. Analysis of results showed that, besides the collector surface area, the main factors affecting the solar fraction were the local weather conditions (intensity of incident solar radiation) and the time of day when the plant was operated.
KEYWORDS
PAPER SUBMITTED: 2012-12-29
PAPER REVISED: 2013-02-21
PAPER ACCEPTED: 2013-09-17
PUBLISHED ONLINE: 2013-09-22
DOI REFERENCE: https://doi.org/10.2298/TSCI121229124M
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2014, VOLUME 18, ISSUE Supplement 1, PAGES [S1 - S12]
REFERENCES
  1. A. M. Mohamed, A. Habaibeh, H. Abdo, An investigation into the current utilization and prospective of renewable energy resources and technologies in Libya, Renewable Energy, 50 (2013) pp. 732-740.
  2. I.V. Luminosu et al. Research in solar energy at the Politechnica university of Timisoara: studies on solar radiation and solar collecors, Thermal science, Vol 14, 2010 (1) , pp. 157-169.
  3. E.M. Languri, et al. An energy and exergy study of a solar thermal air collector, Thermal science, Vol 13, 2009 (1) , pp. 205-216.
  4. K.F. Fong et al. Solar hybrid air-conditioning system for high temperature cooling in subtropical city, Renewable Energy, 35 (2010) 2439-2451.
  5. Balghouthi M, Chahbani MH, Guizani A. Feasibility of solar absorption air conditioning in Tunisia, Building Environment, 2008; 43(9), pp. 1459-70.
  6. A. Elsafty, A.J. Al-Daini. Economical comparison between a solar powered vapour absorption air-conditioning system and a vapour compression system in the Middle East, Renewable Energy, 25 (2002), pp. 569-583
  7. Mazloumi M, Naghashzadegan M, Javaherdeh K. Simulation of solar lithium bromide-water absorption cooling system with parabolic trough collector, Energy Conversion and Management, 2008;49(10), pp. 2820-32.
  8. S. Ajib, W. Günther, Solar thermally driven cooling systems: Some investigation results and perspectives; Energy Conversion and Management 65 (2013), pp. 663-669.
  9. Duffie JA, Beckman WA. Solar energy thermal processes. New York: Wiley; 1974.
  10. ASHRAE Handbook of Fundamentals (SI). Chapters 2,6,14 and 20 (2009).
  11. S. A. Kalogirou, Solar thermal collectors and applications, Progress in Energy and Combustion Science, 30 (2004), pp. 231-295.
  12. John A. Duffie, William A. Beckman, Solar Engineering of Thermal Processes, 3rd ed., John Wiley & Sons, Inc., 2006.

© 2019 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence