000			03411nam a2200433 4500
005			20260818113549.0
008			280998s1990 th r 0000|0 eng d
035			_a.b10029151
099		9	_aAIT Thesis no. ET-90-1
100	0		_aSan Chatkaewvorakul
245	1	2	_aA feasibility study on ice storage in an office building in Bangkok
260			_aBangkok : _bAsian Institute of Technology, _c1990
300			_a159 p.
490	1		_aThesis ; _vno. ET-90-1
500			_aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology
502			_aThesis (M.Eng.) - Asian Institute of Technology, 1990
520			_aA feasibility study on ice storage in an office building in Bangkok, which has 24 floors in one block and 2 floors in another block, is described in this thesis. The ice storage under a partial and modified demand-limited design with constant proportion control are considered. It has been found from a preliminary results of an energy audit that the air conditioning system consumed about 61.1% of total building electrical energy consumption and chillers consumed about 51.8% of total electrical energy consumption in air-conditioning (A/C) system. The average coefficient of performance of the chillers is 4.77 at the daytime (450 ton chiller) and 3.45 at the nighttime (50 ton chiller) . The average system efficiency is 1.55 kW/ton. The DOE- 2. lC building energy analysis computer program was used to analyze the energy consumption in the studied building. Conventional heating ventilation air-conditioning (HVAC) system was compared to ice storage systems using simple payback periods, net present value and internal rate of return. It was found that at present electricity rate structure , partial storage is more economically feasible than other operating modes . But under a number of alternative time-of-day (TOD) rate structure, the modified demand-limited storage system present a better economic feasibility, especially when the energy charge for the off-peak period is differentiated from other period.
650		0	_aHeat storage
650		0	_aCooling load
700	0		_aSurapong Chiraratananon, _eChairperson
700	1		_aBhattacharya, Sribas C., _eExamination Committee
700	1		_aMohanty, B., _eExamination Committee
700	1		_aLapillonne, Bruno, _eExamination Committee
710	2		_aThe Government of France, _eScholarship Donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. ET-90-1
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B18305
907			_a.b10029151 _bmnait _cx
902			_a240409
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