ENERGY-CONSERVATION AND PAYBACK PERIODS OF NATURAL CIRCULATION TYPE SOLAR WATER-HEATERS

被引：6

作者：

NAHAR, NM

机构：

[1] Central Arid Zone Research Institute, Jodhpur

来源：

INTERNATIONAL JOURNAL OF ENERGY RESEARCH | 1992年 / 16卷 / 05期

关键词：

ENERGY CONSERVATION; PAY BACK PERIODS; SOLAR WATER HEATERS; NATURAL CIRCULATION; SOLAR ENERGY;

D O I：

10.1002/er.4440160510

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Energy savings in relation to different fuels, namely firewood, coal, kerosene, LPG and electricity have been calculated for a pressurized natural circulation type solar water heater with blackboard paint and a selective surface on the absorber. The payback periods have been computed by considering 10% compound annual interest, 5% annual maintenance cost and 5% inflation per year in maintenance cost and fuel prices. The cash flow has also been worked out for both solar water heaters. The cash flow is more for a solar water heater with a selective surface. The payback periods are 2.08-8.67 years for a solar water heater with a selective surface and 2.13-8-96 years for a solar water heater with blackboard paint. The estimated life of a heater is about 15 years. This shows that use of a solar water heater for heating water is very economical.

引用

页码：445 / 452

页数：8

共 12 条

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