Bir soğutma sistemindeki kondenser kapasitesinin değiştirilmesinin enerji ve ekserji analizleri ile incelenmesi























































































ABSTRACT
M.Sc. Thesis
Ayhan AKDOĞAN
Zonguldak Karaelmas Üniversity Graduate School of Natural and Applied Sciences
Department of Machine
Thesis Advistor:Yrd. Doç.Dr. Kemal ATİK January 2007, 72 pages
In this study, energy and exergy analysis of a cooling cycle with steam compression having three water cooled condenser of different capacity, which has been specially designed and manufactured. Evaporator, capillary tube, and condenser capacities were chosen according to the compressor. For the purpose of exergy analysis, two extra condensers were manufactured one is smaller and the other is bigger than the condenser used in the system. These condensers were taken in line by vane and thus three experiments were conducted by three different condensers. For the each experiment, gas inlet and outlet temperatures of all cooling components, and water inlet and outlet temperatures of condensers and evaporator were measured by thermocouples and the pressures were measured by manometers when the system reached equilibrium. Enthalpy, entropy and the other properties of R134a refrigerant used in the system were determined by Mollier diagram using the pressure and temperature values measured, and energy and exergy analysis were made on the nodes defined in the system. At the end of the experiments and calculations, energy and exergy losses of each experiment were compared to each other. According to the calculation made, energy losses the system with the big, medium, and small condensers were 0,366 kW, 0,356 kW, and 0,332 kW respectively. The most exergy loss was
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5. SAYFADAKI ANAHTAR KELIMELER

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5. SAYFA ICERIGI

ABSTRACT
M.Sc. Thesis
Ayhan AKDOĞAN
Zonguldak Karaelmas Üniversity Graduate School of Natural and Applied Sciences
Department of Machine
Thesis Advistor:Yrd. Doç.Dr. Kemal ATİK January 2007, 72 pages
In this study, energy and exergy analysis of a cooling cycle with steam compression having three water cooled condenser of different capacity, which has been specially designed and manufactured. Evaporator, capillary tube, and condenser capacities were chosen according to the compressor. For the purpose of exergy analysis, two extra condensers were manufactured one is smaller and the other is bigger than the condenser used in the system. These condensers were taken in line by vane and thus three experiments were conducted by three different condensers. For the each experiment, gas inlet and outlet temperatures of all cooling components, and water inlet and outlet temperatures of condensers and evaporator were measured by thermocouples and the pressures were measured by manometers when the system reached equilibrium. Enthalpy, entropy and the other properties of R134a refrigerant used in the system were determined by Mollier diagram using the pressure and temperature values measured, and energy and exergy analysis were made on the nodes defined in the system. At the end of the experiments and calculations, energy and exergy losses of each experiment were compared to each other. According to the calculation made, energy losses the system with the big, medium, and small condensers were 0,366 kW, 0,356 kW, and 0,332 kW respectively. The most exergy loss was
v

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