IJSTR

International Journal of Scientific & Technology Research

IJSTR@Facebook IJSTR@Twitter IJSTR@Linkedin
Home About Us Scope Editorial Board Blog/Latest News Contact Us
CALL FOR PAPERS
AUTHORS
DOWNLOADS
CONTACT
QR CODE
IJSTR-QR Code

IJSTR >> Volume 2- Issue 9, September 2013 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Simplified Procedure For Estimating Air-Conditioning Cooling Load In Ghana

[Full Text]

 

AUTHOR(S)

Felix A. Uba, YesuenyeagbeA. K. Fiagbeand Emmanuel A. Sarsah

 

KEYWORDS

Key Terms: Cooling load,worksheet, load factors, design condition.

 

ABSTRACT

Abstract: Undersized or oversized air conditioning equipment leads to high operational cost, frequent breakdown and accelerated wear of equipment. Wrong sizing of equipment is often the result of inaccurate procedures employed to estimate the cooling load of the air conditioned space. Today, computer programs are available on the market for more accurate estimation of cooling load. All the same, what appears to be the established practice among service providers in the air conditioning industry in Ghana is to size air conditioners for all applications by multiplying the net floor area by cooling load factor to estimate space cooling load. Availability of cooling load factors that take into account the space operating conditions will be a more accurate and user-friendly tool for such service providers. The Transfer Function Method (TFM), a well-known cooling or heating load estimation procedure that has been adopted by ASHRAE, was used in this research to predict the hourly and daily average cooling load due to different types of walls, roofs and fenestration that are typically found in building construction in Ghana. This has been used to develop cooling load factors that simplify load estimation with a worksheet. The outputs of the worksheet were compared with the result of cooling load estimated using a computer program and the results were found to be satisfactory. The present work will help minimize the problems of higher initial investment and larger energy consumption by auxiliaries, due to over-sizing A/C equipment and the general discomfort during the peak hot season in Ghana, due to under-sizing of A/C equipment.

 

REFERENCES

[1]. C. Koranteng and E. G. Abaitey, “The effect of form and orientation on energy performance of residential buildings in Ghana,” Journal of science and technology, vol. 30, no. 1, pp. 71-81.2010.

[2]. B. Kareem, “Load Estimation for Air-conditioning using Computer Software Approach,” International Journal of the Computer, vol. 16, pp. 35-43, 2002.

[3]. C. M. Sam and K. P. Cheung, “Application of Building Energy Simulation to air-Conditioning Design,”In Proc. Of the Mainland-Hong Kong HVAC Seminar, 12-20,1998.

[4]. F. A.Ansari, K. A. Mokhtar and N. M. Adam, “A simple Approach for building Cooling Load Estimation,”American Journal of Environmental Sciences, vol. 3, pp. 209-212, 2005.

[5]. W.C. Whitman and W.M. Johnson, Refrigeration and Air Conditioning Technology, Delmar Publishers, Washington, 1995.

[6]. ASHRAE Handbook of Fundamentals,American Society of Heating, Refrigerating and Air- Conditioning Engineers, Atlanta, 1981.

[7]. J. F. Kreider and A. Rabl,Heating and Cooling of Buildings, McGraw-Hill, New-York, 1994.

[8]. ASHRAE Handbook of Fundamentals, American Society of Heating, Refrigerating and Air- Conditioning Engineers, Atlanta, 1977.

[9]. ASHRAE Handbook of Fundamentals,American Society of Heating, Refrigerating and Air- Conditioning Engineers, Atlanta.1989.

[10]. ASHRAE Handbook of Fundamentals,American Society of Heating, Refrigerating and Air- Conditioning Engineers, Atlanta, 1972.