Determination Of A Nonresidential Space Cooling Load: Vb Program Apprication

ABSTRACT:This study develops a computer application in Visual Basic computer programming language capable of computing the sensible and latent cooling loads of a single zone of a non-residential building taking all the influential factors into consideration, using the CLTD/SCL/CLF method.The developed program is enhanced with a special Graphical User Interface (GUI) to make it more User friendly. Basic equations relating to the problem were presented, these are mainly assumptions proposed by ASHRAE for its calculation of heat gain and cooling load.The calculation was based on the atmospheric condition and parameters obtainable in the month of March at 8hours interval between the 8.00hrs and 16.00hrs of the day. This space cooling load calculation was carried out for an actual building in University of Nigeria Nsukka (i.e. 3rd year lecture room in Mechanical Engineering Department) using the developed program and the maximum space loads which are required for the space are 11432 watts sensible and 4120 watts latent.

REFERENCES

[1] Adeyemo, T. (2000). Refrigeration and the Air Conditioning, GreenlinePublishers, Nigeria, pp 113.

[2] James, C.W., (1995). Air Conditioning Technology,Wellington Publishers, USA. pp 413.

[3] Harberl, J.S., and Baltazar, J. (2013). Literature Review on the History of Building Peak Load and Annual Energy Use Calculation Methods in the U.S. Energy Systems Laboratory, Texas A&M University, Texas, U.S.A.

[4] Stewart, J.P. (1948). Solar Heat Gain through Walls and Roofs for Cooling Laod Calculations. ASHVE Transaction 54, pp 361-389.

[5] ASHVE. (1951). American Society of Heating and Ventilating Engineers Guide. American Society of Heating and Ventilating Engineers, New York, U.S.A.

[6] ASHRAE. (1961). ASHRAE Guide and Data Book 1961: Fundamentals and Equipment. American Society of Heating, Refrigerating and Air-Conditioning Engineers, New York.

[7] Gay, C.M., Fawcett, C.D.V., and McGuinness, W.J. (1955). Mechanical and Electrical Equipments for Buildings. (3rd ed.). John Wiley and Sons, New York.

[8] Brisken, W.R., and Reque, S.G. (1956). Heat Loading Calculations by Thermal Response. ASHRAE Transactions, 62, pp 391-424.

[9] Mitalas, G.P., and Stephenson, D.G. (1967). Room Thermal Response Factor. ASHRAE Transactions, 73. Pt. 1.

[10] ASHRAE. (1981). ASHRAE Handbook: 1981 Fundamentals. American Society of Heating, Refrigerating and Air-Conditioning Engineers, Atlanta-Georgia, U.S.A.

[11] Clough, R.W. (1960). The Finite Element Method in Plain Stress Analysis. Proceedings of Second ASCE Conference on Electronic Computation, Pittsburg, Pennsylvania, Vol. 8, pp 345-378.

[12] Forsythe, G.E., and Wasow, W.R. (1960). Finite Difference Methods for Partial Differential Equations. John Wiley ans Sons Inc., New York, NY.

[13] Loudon, A.G. (1968). Summertime Temperatures in Building without Air-Conditioning. Building Research Station, Report No. BRS-CP-47-68.

[14] Goulert, S.V.G. (2004). Thermal Inertia and Natural Ventilation � Optimization of Thermal Storage as a Cooling Technique for Residential Biuldings in Southern Brazil. Ph.D Dissertation, Architectural Association School of Architecture Graduate School, the Open University.

[15] Mitalas, G.P. (1972). Transfer Function Method of Calculating Cooling Loads, Heat Extraction and Space Temperature. ASHRAE Journal, Vol. 14, Issue 12, pp 54-56.

[16] Rudoy, W., and Duran, F. (1974). Development of an Improved Cooling Load Calculation Method Final Report. American Society of Heating, Refrigerating and Air-Conditioning Engineers, ASHRAE-RP-138, Atlanta Georgia, U.S.A.

[17] ASHRAE. (1977). ASHRAE Handbook of Fundamentals. American Society of Heating, refrigerating and Air-Conditioning Engineers, Inc., New York, NY.

[18] Sowell, E.F. (1988). Classification of 200,640 Parametric Zones for Cooling Load Calculation. ASHRAE Transactions, Vol. 94, Pt. 2, pp 754-777.

[19] Harries, S.M., and McQuiston, F.C. (1988). A Study to Catagorize Walls and Roofs on the Basis of Thermal Response. ASHRAE Transactions, Vol. 94, Pt 2, pp 688-715.

[20] Spitler, J.D., McQuiston, F.C., and Lindsey, K.L. (1993). The CLTD/SCL/CLF Coolindg Load Calculation Method. ASHRAE Transaction, Vol. 99, No. 1, pp 183-192.

[21] Spitler, J.D., Fisher, D.E., and Pedersen, C.O. (1997). The Radiant Time Series Cooling Load Calculation Procedure. ASHRAE Transactions, Vol. 103, Pt. 2, pp 503-515.

[22] Pedersen, C.O., Fisher, D.E., Liesen, R.J., and Strand, R.K. (2003). ASHRAE Toolkit for Building Load Calculation. ASHRAE Transactions, Vol. 109, Pt. 1, pp 583-589.

[23] Barnaby, C.S., Spitler, J.D., and Xiao, D. (2004). Updating the ASHRAE/ACCA Residential Heating and Cooling Load Calculation Procedures and Data.ASHRAE Final Report 1199. American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc., Atlanta, Georgia.

[24] Fantu, K. (2004). Transint Analysis of Cooling Load of a Single Zone Building. M.Sc. Thesis, Mechanical Engineering Department, School of Graduate Studies, Addis Ababa University.

[25] ASHRAE. (2001). ASHRAE Handbook Fundamentals. American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc., Atlanta, Georgia, U.S.A.

[26] McQuiston, F.C., and Spitler, J.D. (1992). Coolind and Heating Load Calculation Manual. 2nd ed. ASHRAE.

[27] ASHRAE. (1997). ASHRAE Handbook Fundamentals. American Society of Heatinh, Refrigerating and Air-Conditioning Engineers, Inc., Atlanta, GA.