Synchronous Comparison of Different Solar Water Heaters Design

عليوي, وسام حميد; جاسم, احمد حكمت; صاحب, مزهر علي

doi:10.30684/etj.28.9.19

	Synchronous Comparison of Different Solar Water Heaters Design
Engineering and Technology Journal
Article 1, Volume 28, Issue 9, 2010, Pages 467-478 PDF (241.99 K)
DOI: 10.30684/etj.28.9.19
Authors
وسام حميد عليوي; احمد حكمت جاسم; مزهر علي صاحب
Abstract
In this paper an experimental study of different design of solar water heaters was carried out. all the used solar water heaters work on the thermosiphone theory. The experimental study includes testing of four solar water heaters. The first one is a Evacuated tube solar heater flat produced by Denka-China. The second one is a flat plate solar water heater produced by the general company for electrical industries/Baghdad, it's in working since 2001 and it was used for testing after simple maintenance. The third one is a flat plate solar water heater produced by solar energy research center/Baghdad, which is in work in 2007, it is similar to the first one but with some differences in design and material . The last one is a portable type - solar water heater. The testing was done for a period of time from February to July 2007. The performance was tested of the collectors with no load conditions and with different rate of load conditions. The no load testing results showed that performance for the solar water heater produced by Denka Company is better than other solar water heaters. The flat plate solar water heater produced by solar energy research center have good performance and it’s the nearest to the performance of a Evacuated tube solar heaters from otheres heaters. Water withdraw results show an improvement in daily efficiency for the four solar water heaters, where the efficiency of solar water heaters is (55% - 66%) for the first heater, (48% - 57%) for the second heater, (51% - 62%) for the third heater and (20% - 35%) for the fourth heater.

Statistics Article View: 275 PDF Download: 237