Evaluation of Solar Water Heating Systems in Botswana

This paper presents results of an assessment of several solar water units to determine causes of their malfunctioning. A survey of solar water heater (SWH) installations in the Gaborone area, Botswana was carried out to obtain performance characteristics of SWH in the local market. Extensive inspections were performed on both in-service and non-functioning units, problems were diagnosed and pragmatic solutions were proffered. The paper presents some of the discoveries made during the investigation, namely, several units did not last up to the payback period of say 10 to 15 years. The results obtained could provide guidance in selecting operating criteria and suitable system design for solar water heating applications.

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Thermal efficiency and cost analysis of solar water heater made in Rwanda

Energy Exploration & Exploitation ◽

10.1177/0144598718815240 ◽

2018 ◽

Vol 37 (3) ◽

pp. 1147-1161 ◽

Cited By ~ 1

Author(s):

Esdras Nshimyumuremyi ◽

Wang Junqi

Keyword(s):

Cost Analysis ◽

Thermal Efficiency ◽

Solar Water Heater ◽

Water Heating ◽

Water Heater ◽

Solar Water Heating ◽

Solar Water ◽

Water Heaters ◽

Solar Water Heaters ◽

Made In

Solar water heating is a technology of capturing the energy from the sun's radiation for the purpose of raising the temperature of water from water supply temperature to the desired higher temperature depending on the use. There are many views and discussions on the questions of thermal efficiency of solar water heaters and their associated cost, especially different customers/users want to replace their existing conventional water heating energy by solar water heating systems. In this present paper, a deep investigation has been accomplished to determine thermal efficiency and cost analysis of solar water heater made in Rwanda. During manufacturing of solar water heater, the collector was the main part to emphasize on. The high efficiency of the system was achieved by replacing galvanized iron sheet by aluminum sheet slotted and black painted as an absorber plate. The ambient temperature and average solar radiation of the three sites where solar water heaters are installed were investigated. The used materials, specifications and sizing were discussed in this paper.

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Applied Research of Solar Water Heater Integrated with Modern Architecture

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.756-759.4492 ◽

2013 ◽

Vol 756-759 ◽

pp. 4492-4496

Author(s):

Bo Yang Zhang ◽

Ya Hui Xie ◽

Shun Xiang Sun

Keyword(s):

Water Storage ◽

Heating System ◽

Modern Architecture ◽

Solar Water Heater ◽

Storage Tanks ◽

Water Heating ◽

Water Heater ◽

Solar Water Heating ◽

Solar Water ◽

Solar Water Heating System

This paper describes the application forms of building integrated with solar energy. We explain a solar water heating system; its solar collectors and water storage tanks are placed together. We discuss another solar water heating system, its solar collectors are placed together but its water storage tanks are placed in every resident's home. This paper also introduces the wall-hung SWH and the application of solar refrigeration and solar heating. At last we analyze the problems of the development of solar water heater integrated with modern architecture.

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