JBCPR  Vol.3 No.1 , March 2015
Energy Efficiency in Building: Case of Buildings at the University of Ibadan, Nigeria
Abstract
Nigeria today faces serious challenge in providing adequate energy to meet the needs of her citizenry. Efforts are currently geared towards generation of more energy to ease the problem. While these efforts are commendable, it is equally desirable to explore ways to minimize consumption of generated energy. The objective of this work is to investigate the effect of building orientation on energy demand in buildings. This paper considered the use of standard design considerations, fundamental cooling load equations and the guidelines stipulated by the American Society of Heating, Cooling and Air conditioning Engineers (ASHRAE). The study takes the designs of three buildings within the University of Ibadan, Nigeria into consideration with the view to harness the energy saving potentials through building orientation and selection of efficient cooling equipment. The results obtained were 155.34, 224.75, 86.35 kW and 163.60, 232.04 and 90.64 kW for the three lecture envelopes including the Faculty of Science, CBN and the Department of Chemistry lecture theatres using the North-South and East-West building orientations respectively. Increase in energy demand of 7.96, 7.29 and 4.29 kW was thus obtained with the East-West building orientation over North-South. Energy efficiency is thus guaranteed with North-South building orientation.

Cite this paper
Odunfa, K. , Ojo, T. , Odunfa, V. and Ohunakin, O. (2015) Energy Efficiency in Building: Case of Buildings at the University of Ibadan, Nigeria. Journal of Building Construction and Planning Research, 3, 18-26. doi: 10.4236/jbcpr.2015.31003.
References

[1]   European Council (2002) Energy Performance Building Directive 2002/91/EC of the European Parliament and Council of 16 December 2002 on the Energy Performance in Buildings.

[2]   Nicol, F. and Roaf, S. (2005) Post-Occupancy Evaluation and Field Studies of Thermal Comfort. Building Research and Information, 33, 338-346. http://dx.doi.org/10.1080/09613210500161885

[3]   Baizhan, L., Runming, Y. and Croome, D. J. (1995) Air Conditioning in China. Buildings Research Information, 23, 309-316. http://dx.doi.org/10.1080/09613219508727483

[4]   Yao, R., Li, B. and Steemers, K. (2005) Energy Policy and Standard for Built Environment in China. Renewable Energy, 30, 1973-1988.

[5]   Lam, J.C., Wan, K.K.W., Tsang, C.L. and Yang, L. (2008) Building Energy Efficiency in Different Climate. Energy and Building, 01, 013.

[6]   Balcomb, J.D. and McFarland, R.D. (1978) Passive Testing in Los Alamos. Los Alamos National Laboratory, Report LA-UR-7B-1178.

[7]   Matsuo, Y. (1979) Prediction of Seasonal Load with the Expanded Degree-Day Method. Summaries of Technical Papers of Annual Meetings of AIJ, 39, 837-846.

[8]   Christian, J.E. (1983) Thermal Envelope Field Measurements in an Energy-Efficient Office and Dormitory. ORNL/Tm 8571.

[9]   Lam, J.C. and Li, D.H.W. (1999) An Analysis of Daylighting and Solar Heat for Cooling-Dominated Office Buildings. Solar Energy, 65, 251-262. http://dx.doi.org/10.1016/S0038-092X(98)00136-4

[10]   Cheok, G. (2008) Proposed Legislative Framework on Environmental Sustainability for Buildings.

[11]   AL-Najem, A.A. (2002) The Architectural Category and Its Importance to Measure the Electrical Energy Demand and to Identify Effective Conservation Measures. The 1st Symposium on Energy Conservation and Management in Buildings Conference, SAK, (I), 99-110.

[12]   La Roche, P. and Liggett, R. (2001) A Web Based Assistant for the Design of Climate Responsive Buildings. Architectural Science Review, 44, 437-448. http://dx.doi.org/10.1080/00038628.2001.9696924

[13]   Wagner, A., Gossauera, E., Moosmanna, C., Groppa, T. and Leonhart, R. (2007) Thermal Comfort and Workplace Occupant Satisfaction: Results of Field Studies in German Low Energy Office Buildings. Energy and Buildings, 39, 758-769. http://dx.doi.org/10.1016/j.enbuild.2007.02.013

[14]   Bala, E.J., Ojosu, J.O. and Umar, I.H. (2000) Government Policies and Programmes on the Development of Solar PV Sub-Sector in Nigeria. Nigeria Journal of Renewable Energy, 8, 1-6.

[15]   Ohunakin, O.S., Adaramola, M.S., Oyewola, O.M. and Fagbenle, R.O. (2014) Solar Energy Applications and Development in Nigeria: Drivers and Barriers. Renewable and Sustainable Energy Reviews, 32, 294-301. http://dx.doi.org/10.1016/j.rser.2014.01.014

[16]   Ojo, O. (2000) Fundamentals of Physical and Dynamic Climatology. SEDEC Publication, Lagos.

[17]   American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) (2009) Fundamental Handbook. ASHRAE, Atlanta.

[18]   American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) (1997) Fundamental Handbook. ASHRAE, Atlanta.

[19]   American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) (1985) Fundamental Handbook. ASHRAE, Atlanta.

 
 
Top