000			02868cam a2200337 a 4500
003			EG-GiCUC
005			20250223032700.0
008			210130s2020 ua dh f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aM.Sc
099			_aCai01.13.11.M.Sc.2020.Mo.C
100	0		_aMohamed Rashad Mohamed Ali
245	1	0	_aCFD simulation and parametric analysis of airflow distribution around chillers in a mechanically ventilated room / _cMohamed Rashad Mohamed Ali ; Supervised Essam E. Khalil Hassan Khalil , Muhammed Abdullah Hassan Ahmed
246	1	5	_aمحاكاة لتوزيع الهواء حول مُبرد الهواء المركزى داخل غرفة ميكانيكية لأداء أفضل
260			_aCairo : _bMohamed Rashad Mohamed Ali , _c2020
300			_a80 P. : _bcharts , facimiles ; _c25cm
502			_aThesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Mechanical Power Engineering
520			_aFor cases when it is difficult to introduce sufficient amounts of natural ventilation air to air-cooled chillers, mechanical ventilation is required. A typical example is mechanical/chiller rooms. Due to the confined space, part of the chillers{u2019} exhaust air is expected to be circulated back as part of the total intake air, eventually decreasing the coefficient of performance (COP) of the chillers. The objective of this study is to simulate the airflow distribution around chillers in such mechanical-rooms and to analyze the impact of room height, locations of the intake and exhaust louvers, number of chillers, and intake air velocity on the COP of chillers. This is achieved by developing a computational fluid dynamics (CFD) model in ANSYS® 19.0. The study shows that the locations of the intake and exhaust air-louvers and the intake louver air velocity are the most influential parameters that can significantly affect the performance of the chiller, and the lower this velocity is, the higher the chiller{u2019}s intake air temperature,the best results were achieved at an intake air velocity of 2 m/s. The best configuration for the air-louvers is to introduce the air from two side inlets and to locate the exhaust louver at the top of the room. Finally, the room{u2019}s clear height also affects the recirculation process, but it has a lower impact when compared to other parameters, the best results were achieved at a mechanical-room height of 6 m.
530			_aIssued also as CD
653		4	_aAir cooled chiller
653		4	_aIndoor Package unit
653		4	_aMechanical-room
700	0		_aEssam E. Khalil Hassan Khalil , _eSupervisor
700	0		_aMuhammed Abdullah Hassan Ahmed , _eSupervisor
856			_uhttp://172.23.153.220/th.pdf
905			_aNazla _eRevisor
905			_aShimaa _eCataloger
942			_2ddc _cTH
999			_c79749 _d79749