الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Kuwait has a harsh climate circumstances in term of high temperature in summer months from April to October where the average ambient temperature during these months exceeds 45 0C which then needs the utilization of air-conditioning systems. Constructions in Kuwait are exposed to very high air temperatures in addition to high solar radiation that may exceeds 940 W/m2 on a horizontal surface in summer months. The thermal performance management of the split air-conditioning system and reducing the its negative effect of the global environment can be achieved by evaluating the heat dissipation from the condenser that is mainly control the performance of the split air-conditioning system.
In the present experimental study, the operating parameters of air dry-bulb temperature is changed from 30 oC to 70 oC and its velocity is varied from 2 m/s to 4 m/s. and the air relative humidity is changed from 20% to 80%. The effects of varying these parameters were mainly considered to evaluate the performance of the air conditioning unit for four cases i.e., without evaporative cooler (WOIEC) and with evaporative cooler models I, II and III (WOIEC M-I, M-II and M-III) with different outer diameters 4 cm., 5 cm. and 6 cm. and the same inner diameter of I cm. In the current investigation, experiments were carried out to study the effect of the ambient air temperature and its velocity and relative humidity on the air temperature difference across the condenser (ΔTc), condenser temperature (Tc), the power consumption (P) consequently the coefficient of performance (C.O.P) of the split air- conditioning system.
The results show that increasing the ambient air temperature from 30 to 70 0C at 2 m/s and 40% relative humidity reduces the ΔTc for WOIEC and WEIC M-1, M-II and M-III by 85 %, 67%, 61% and 56%, respectively. In addition, increasing the ambient air temperature from 30 to 70 0C at 2 m/s and 40% relative humidity increases the condenser temperature (Tc) for WOIEC and WEIC M-1, M-II and M-III by 84%, 77%, 67% and 56%. The power consumption of split air-conditioning system using WEIC M-1, M-II and M-III at 2 m/s, 40% relative humidity and 50 oC is decreased by 18 %, 24 % and 29.5% less than that of WOIE. Furthermore, increasing the ambient air temperature from 30 oC to 70 oC at 40% relative humidity increases the coefficient of
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performance (C.O.P) of the system WOIE as well as WIE by nearly 36%. Moreover, the values of average C.O.P increases insignificantly for WIE M-I, M-II and M-III by 41%, 55% and 68 %, respectively rather than that of WOIE at 30 oC with increasing the air velocity from 2 m/s to 4 m/s. Finally, the effect of relative humidity on C.O.P is more considerable in the range of 20% to 50% while its effect is slight in the reaming range i.e., from 60% to 80%.