Design of a commercial solar hot water system

Abstract

The paper critically evaluates the design and performance of a commercial hot water system. These sysfems are installed in IIT Delhi hostels mainly for cooking and washing utensils. In some of these systems, heat exchangers are also used. In specific terms, one can regard the thermal efficiency and the maximum hot water temperature as indicators of the performance of the system. Hence different parameters of the heat exchanger and the number of collector panels directly affect the performance of the system. In the paper, an energy balance for different components of the system under steady state conditions is primarily investigated. It is found that excellent agreement exists between experimental and theoretical results for the proposed design parameters. KEY WORDS Hot water systemHeat exchanger Solar energy I Thermal G Photovoltaic J. J. Medium High . 1 Low temperature temperature temperature 0363-907X/92/O4028 5-16$08.OO