Comparison of Utilization an Absorption and Vapour Compression Chiller in Sub-Tropical Country Building – A Feasibility Study
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Keywords
Variable speed drives, Motor losses, Generator losses
Abstract
The present study investigate the feasibility of absorption chiller utilization as part of trigeneration system that possibly applied in sub-tropical country building. Trigeneration is refer to the heat utilisation from electric generator (combined heat and power, CHP) to generate absorption chiller in order to produce chilled water for air conditioning system (combined cooling, heat and power, CCHP). Compare to the vapour compression system, absorption chiller that is mainly generated by heat waste, promised benefit economically and environmentally. Overall efficiency of CCHP can reach 71 % and possibly reducing emission until 146709.07 kg CO2. Economic analysis using the Payback period methodology has shown that the CCHP would produce a return on investment of 2.6 years. Improvements absorption chiller and support from government are expected to lead to increased return on investment and improved viability of the system.
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References
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Available at: http://www.decc.gov.uk/assets/decc/what%20we%20do/uk%20energy%20supply/237-annual-energy-statement-2010.pdf [Accessed 7th July 2010]
DEFRA. 2009. Carbon Trust: Conversion Factor.
Available at: http://www.carbontrust.co.uk [Accessed 7th July 2010]
Dossat, R.J., Francis, E. ed. 1997. Principles of Refrigeration. 4th edn. London: Prentice-Hall International
Florides, S. A. et al. 2003. Design and Construction of a LiBr–water Absorption Machine, Energy Conversion and Management, 44 (15) pp. 2483-2508
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Available at: http://www2.savetodaysavetomorrow.com/documents/OSV7-Ratecard.pdf [Accessed 28th May 2010]
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Available at: http://www.epa.gov/climatechange/glossary.html [Accessed 28th May 2010]
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EPA, U.S. 2010. Environmental Protection Agency: Ozone Layer Protection Gallery.
Available at: http://www.epa.gov/ozone/defns.html [Accessed 28th May 2010]
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Available at: http://www.hmrc.gov.uk/budget2010/march/bn55.htm [Accessed 7th July 2010]
IEA. 2002. District Heating and Cooling: Optimization of Cool Thermal Storage and Distribution. International Energy Agency, The Netherland: Novem.
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Kilpatrick R., ‘Energy Demand Patterns in Non-domestic buildings from empirical data Urban’. Energy Research Group, the UK: Heriot-Watt University.
Available at: http://www.pet.hw.ac.uk/ea/seminars/pdfs/111109_RichardKilpatrick.pdf [Accessed 7th July 2010]
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MacLeay I. 2010. Digest of United Kingdom Energy Statistics 2010. The UK: DECC
Available at: www.decc.gov.uk/en/content/cms/statistics/publications/dukes/dukes.aspx [Accessed 7th July 2010]
Mui K.W., Wong L.T. 2006. Cooling load calculations in subtropical climate, Building and Environment, 42 (2007) pp. 2498–2504
Pe´rez-Lombard L. et al. 2007. A Review on Buildings Energy Consumption Information, Energy and Buildings, 40 (2008) pp. 394–398
Smith B.E., Reynolds, Kirby, R. (ed), Reay, D.A. (ed), Zhao, C.Y. (ed). (2007), Energy Conversion Technologies part 2: Combined Heat and Power. Brunel University: Brunel University
Spon’s Price Book, Langdon D. (ed), Wall M. G. (ed), (2006), Spon’s Mechanical & Electrical Services Price Book 2006. 37th edn. London: Taylor & Francis
Syed, A., Maidment, G.G, Missenden, J.F. and Tozer, R.M. 2002. An efficiency comparison of solar cooling schemes, ASHRAE Transactions. Atlanta: American Society of Heating, Refrigerating and Air-conditioning Engineers, 108, pt. 1, pp. 877-886
Tassou, S.A. 2001. Air conditioning part 1. Brunel University: Brunel University
Tassou, S.A. 2005. Energy Conversion Technologies part 1: Refrigeration. Brunel University: Brunel University
UNEP. 2000. The Montreal Protocol on Substances that Deplete the Ozone Layer. United Nations Environment Programme, Nairobi, Kenya: UNON
Available at: http://www.unep.org/ozone [Accessed 7th July 2010]