Abstract
In this paper we describe an integrated collector storage solar water heater for the North Western region of India for use as domestic water heater during the winter season and present the experimental results of temperature stratification. The system consists of a steel water storage tank with azimuthal orientation such that its walls face south east, south west, north east and North West directions. The sunlit walls (south east and south west) and the top cover surface of the storage tank are covered with transparent insulation material (TIM) and the off-sunlit sides with opaque insulation. Experimental results show that the top layer is at the highest temperature. The top layer is drained using a new design of the outlet. The system can be used in rural areas or as a pre heater in more affluent households. The system can return the cost of conversion of the storage tank into a Solar Water Heater in one winter season by saving the cost of electrical energy required for heating water during winter months.
Highlights
Solar water heating has been identified as an important means to combat pollution due to fossil fuel burning [1,2,3]
In this paper we describe an integrated collector storage solar water heater for the North Western region of India for use as domestic water heater during the winter season and present the experimental results of temperature stratification
The system can return the cost of conversion of the storage tank into a Solar Water Heater in one winter season by saving the cost of electrical energy required for heating water during winter months
Summary
Solar water heating has been identified as an important means to combat pollution due to fossil fuel burning [1,2,3]. The most commonly used solar water heater for domestic sector is natural circulation type wherein the hot water is circulated between collector and storage water tank These are referred to as thermpsyphon systems and have been extensively investigated [7,8]. Such systems are available commercially and are partially subsidized by Government agencies Despite all these incentives it has not been able to achieve mass scale popularity in the domestic sector in north western region of India. The motivation behind the present work is to design an integrated collector storage system a for semi urban and rural areas of North Western India which is cost effective, can be installed with locally available materials and components and easy to maintain. Garnier et al [13] studied the temperature stratification of integrated collector storage system in Scottish weather condition
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