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“EXPLORATION OF THE APPLICATION OF ETHANOL & ACETONE FLUID COPPER THERMOSYPHONS AS A HEAT TRANSFER TOOL IN A SOLAR WATER HEATER (SWH)”
Md. Kausar Mumtaz 1, Sohail Bux2

Published in: Journal for Advance Research in Applied Sciences
Volume- 4, Issue-1, pp.458-462, Jun 2017
DPI :-> 16.10089.JARAS.2017.V4I1.458462.1755



Abstract
Ideal working position of thermosiphon is vertical position. Thermosiphon operate on maximum performance and maximum mass flow transfer in this position. In this study, the aim is to investigate the application of ethanol & acetone fluid thermosiphons as a heat transfer tool in a solar water heater (SWH). For this purpose, a long evaporative section thermosiphons (LEST) are designed, constructed and tested at temperatures of 50?C, 60?C&70?C heat source (Hot Water). In this work the LEST are made of copper tube of 1000 mm length of internal diameter 24.4 mm and 1mm thickness. The working fluid employed is ethanol & acetone with filling ratio (FR) 40%. The lengths of evaporator, adiabatic & condenser sections are 600mm, 200mm and 200 mm respectively. Maximum heat transfer capacity of each LEST is 500W. The LEST placed centrally in 2 inch UPVC pipe. The 2 inch UPVC pipe water jackets are provided in both evaporative & condenser section of prescribed length for hot water circulation. Heat source at 50?C, 60?C, 70?C&80?C temperature of hot water taken during experimentation. Two Immersion water heaters of 3.5 KW were used for water heating process. The Inclination of the LEST varies between 0? to 90?. Seven different tests were carried out in different orientation angle. The results show that efficiency of thermosiphons mode is in range of 50 % to 71%.Experimentally found that the vertical position is the best performance of thermosiphons for maximum mass flow rate of fluid. It was also found that there is no more differences in thermal performance of thermosiphons at an angle of 45?, 60? & 90? as compare with vertical position (90?). The overall thermal resistance also calculated in the range of 0.069?C/W to 0.127 ?C/W. Experimentally found that overall thermal resistance decrease from horizontal position to vertical position. Less overall thermal resistance causes better performance of thermosiphons. After comparison between two thermosiphon (acetone and ethanol fluid) performance it was found that long evaporative section acetone fluid thermosiphon can be used in solar water heating system, because it will gives better performance in low temperature range .

Key-Words / Index Term
Closed Loop Pulsating Heat Pipe, Critical.

How to cite this article
Md. Kausar Mumtaz 1, Sohail Bux2 , ““EXPLORATION OF THE APPLICATION OF ETHANOL & ACETONE FLUID COPPER THERMOSYPHONS AS A HEAT TRANSFER TOOL IN A SOLAR WATER HEATER (SWH)” ”, Journal for Advance Research in Applied Sciences, 4, Issue-1, pp.458-462, Jun 2017. DPI:16.10089.JARAS.V4.I1.1755