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Thermal Performance of Waste Heat Recovery By Using TPCT Heat Exchanger Charged with Nanofluid

Author(s):

Akash Shetty , Navsahyadri Education Society's Group of Institutions, Pune; Nikhil Shedge, Navsahyadri Education Society's Group of Institutions, Pune; Akshay Talekar, Navsahyadri Education Society's Group of Institutions, Pune; Abhishek Sonawane, Navsahyadri Education Society's Group of Institutions, Pune; Prof. Rahul Pise, Navsahyadri Education Society's Group of Institutions, Pune

Keywords:

TPCT, Nanofluid

Abstract

Hot air plays an import role in modem life. The consumption of hot air represents a significant part of the nation's energy consumption. One way of reducing the energy consumption involved, and hence the cost of that energy, is to reclaim heat from the waste warm air that is discharged to the sewer each day. The potential for economic waste air heat recovery depends on both the quantity available and whether the quality fits the requirement of the heating load. To recover heat from waste air in residential and commercial buildings is hard to achieve in quality because of its low temperature range. Nevertheless, efforts to recycle this waste energy could result insignificant energy savings. The objective of this research was to develop a two phase closed thermosyphon heat exchanger charged with nanofluid for a waste air heat recovery system. The advantage of the system proposed in this work is that it provides useful energy transfer during simultaneous flow of cold supply and warm drain air. While this concept is not new, the design of the TPCT heat exchanger with nanofluid for the present study is significantly different from those used previously. Component experiments were carried out to determine the performance characteristics of a heat pipe heat exchanger charged with nanofluid. By replacing the conventional fluid in heat pipe with CuO/H2O nanofluid (2% volume fraction) of the heat pipe heat exchanger good performance can be obtained. The maximum effectiveness obtained for proposed TPCT CuO/H2O charged nanofluid heat exchanger is 0.2862 (2% volume fraction compared with effectiveness 0.16 obtained with conventional heat pipe working fluid. The influence of mass flow rate and source temperature on effectiveness of TPCTHX exhibits same pattern as that of conventional working fluid. The maximum enhancement in effectiveness obtained is 35%.Thus the nanofluid as working fluid in TPCT enhances the effectiveness of heat exchanger.

Other Details

Paper ID: IJSRDV3I30491
Published in: Volume : 3, Issue : 3
Publication Date: 01/06/2015
Page(s): 1939-1943

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