Effect of Pipe Diameter on Thermal Performance of Evacuated Tube Solar Water Heater

Abstract

The sun is the source of all energy. The solar energy can be used for heating and cooking purpose. The utilization of solar energy for heating of water is common application but efficient water heating is the toughest because it depends on whether condition and to overcome such difficulty various modifications have been proposed by different researcher in terms of modification in pipe shape or in terms of change in the material of absorber plate etc. and so the objective of present work is to evaluate thermal performance of Evacuated Tube Collector (ETC) solar water heater with two different inner diameter of 20 mm and 18 mm with 40 mm same outer diameter in case of two ETC experimental set up.