Ventilation Performance Investigation of Roof Top Solar Chimney

Agonafer, Tamerat Demeke

doi:10.11648/j.ajmie.20200502.11

Cited by 1 publication

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“…Ethiopia experiences the tropical climatic condition. According to Tamerat [12], the country has two main distinct seasons: the rainy season (from June to August) and dry season: (from September to June) other months are the boundaries of the two seasons. The temperature throughout the year respectively range from a minimum average of 22 o C to a maximum average of 32 o C. The average experience between 7 to 9 useful sunshine hours per day and an average of 250 to 300 clear sunny days per year.…”

Section: A Solar Energy Potential In Addis Ababa-ethiopiamentioning

confidence: 99%

Technical and Lifetime Cost Benefit Analysis of RET Solar Water Heater a Way to Substitute Electrical Water Heaters for Domestic use:

Agonafer¹,

Jemal²

2020

IJERT

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The case study presents a lifetime cost benefit analysis for RET evacuated tube SWH comparing with EWH for domestic hot water production. The study is important to show the SWH technology is competitive, strengthen local electric use capacity and to stimulate acceptance of the solar technology in Ethiopia. To accomplish the study, conduct thermal performance test of imported RET evacuated tube SWH in order to see the feasibility with current condition of Addis Ababa. And analyze lifetime cost benefit of proposed RET Evacuated tube SWH and compare with commonly used EWH to show technical and economic advantages. In Addis Ababa, home builders and commercial sectors has alternatives of installing SWH and purchase EWH. However, from technical comparison study SWH has an advantage of improve energy security and risk management; reduce the use of electricity; reduce the GHG emissions; improve the quality of life through renewable energy; less payback period over EWH. Similarly, the breakeven analysis confirms that the life cycle save is about 1414.06 ETB and 943.36 ETB per year from electricity bill without considering maintenance and other exploitations, and SWH is profitable less than 6 and 14 years by installing SWH rather than using electrical storage type boiler and instant water heater respectively. In the long run, home builders are both technically and economically beneficial to install SWH.

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Section: A Solar Energy Potential In Addis Ababa-ethiopiamentioning

confidence: 99%