000			03522nam a22003137a 4500
003			KOHA
005			20230418094204.0
008			230320d2022 cy ||||| m||| 00| 0 eng d
040			_aCY-NiCIU _beng _cCY-NiCIU _erda
041			_aeng
090			_aYL 2814 _bO78 2022
100	1		_aOrude, Okemena Jerry
245	1	0	_aCOMPARATIVE ANALYSIS OF COMBINED THERMAL POWER AND REFRIGERATION SYSTEMS UTILIZING SOLAR ENERGY / _cOKEMENA JERRY ORUDE; SUPERVISOR: ASST. PROF. DR. ALI SHEFIK; CO-SUPERVISOR: ASST. PROF. DR. HUMPHREY ADUN
264			_c2022
300			_ax, 94 sheets; _c31 cm. _eIncludes CD
336			_2rdacontent _atext _btxt
337			_2rdamedia _aunmediated _bn
338			_2rdacarrier _avolume _bnc
502			_aThesis (MSc) - Cyprus International University. Institute of Graduate Studies and Research Energy Systems Engineering Department
504			_aIncludes bibliography (sheets 84-94)
520			_aABSTRACT In the present study, 3 solar thermal powered electricity and cooling cogeneration systems are analysed and compared. The first system uses thermal energy from a parabolic trough collector (PTC) to generate electricity using an organic Rankine cycle (ORC) and portion of the produced power is used to provide cooling using a vapor compression refrigeration cycle. In the second cycle, the energy from the PTC is used to simultaneously generate electricity and provide cooling using a vapor ejector cogeneration cycle. In the third system, the energy from the PTC is used to simultaneously generate electricity and provide cooling using a vapor absorption cogeneration cycle. The 3 systems are analysed based on thermodynamic and exergy viewpoints. Energy, exergy, and exergy cost rates are calculated for all cycle streams. The results showed that system 2 has the highest energy efficiency of 16.33% compared to 14.47% for system 1, and 12.37% for system 3. Similarly, system 2 has the highest exergy efficiency of 63.54% compared to 56.29% for system 1, and 48.15% for system 3. From the exergoeconomic analysis, the total production unit cost is lowest in system 2 which has 73.02 $/GJ compared to 75.33 $/GJ in system 3, and system 1 has 291.7 $/GJ. From the exergoenvironmental analysis, system 2 has the highest amount of fuel and CO2 emission savings followed by system 1 and then system 3. The CO2 emission savings in system 2 is 198 tons/yr compared to 168 tons/yr in system 1, and 134 tons/yr in system 3. The exergoenvironmental impact factor and exergoenvironmental impact index also show that system 2 has the most suitable impact of the 3 systems. The 3 systems all reacted positively to an increase in solar radiation as more energy will be available to power each of the systems. However, for an increase in the cooling load, system 1 was negatively affected while system 2 and system 3 were positively affected. This shows that system 1 will have a better performance when it is predominantly used for power generation than for cooling. Overall system 2 was shown to have the best results of the 3 systems. Keywords: Cooling, Exergoeconomics, Exergoenvironmental, Exergy, Power, Solar thermal.
650		0	_aCooling _vDissertations, Academic
650		0	_aExergy _vDissertations, Academic
650		0	_aSolar thermal energy _vDissertations, Academic
700	1		_aShefik, Ali _esupervisor
700	1		_aAdun, Humphrey _esupervisor
942			_2ddc _cTS
999			_c289999 _d289999