Design of the Optimum Heat Pipe Heat Exchanger to Recover Heat From Flue Gas of Boiler in case of Chiang Mai Orchid Hotel, Thailand

Author:

Sriwiga Soonthorn,Munsin Ronnachart,Watcharadumrongsak Thanawat,Wongpanich Somkiat,Kraitong Kwanchai,Lapirattanakun Arwut,Wannachai Autanan,Promdan Surapin,Panananda Nuttarut,Yeunyongkul Pracha

Abstract

This study aims to design the optimum heat pipe heat exchanger (HPHE) to recover heat from flue gas of boiler for increasing the temperature of feed water. The optimum thermosyphon heat exchanger sizing was simulated on the basis of thermo-economical method and simulation program was construct by using the MATLAB 2021b. The program was simulated by input physical parameters of the thermosyphon and heat exchanger and the thermoeconomic parameters. It was found that R134a was chosen as the working fluid of this study.  In addition, the optimum of number of tubes, heat transfer rate and the optimized effectiveness of HPHE were 87 tubes, 4,873 W and 0.237, respectively. Moreover, the net saving and payback period of this HPHE were 14,865 USD and 310 days, respectively.

Publisher

Ho Chi Minh City University of Technology and Education

Reference8 articles.

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2. P. Terdtoon , Heat pipe, Department of Mechanical Engineering, Chiang Mai University, Chiang Mai, Thailand, 1993.

3. M.S. Soylemez, “On the optimum heat exchanger sizing for heat recovery,” Energy Conversion&Manage., vol. 41, pp. 1419-1427, 1999.

4. M.S. Soylemez, “On the thermoeconomical optimization of Heat Pipe Heat Exchanger HPHE for waste heat recovery,” Energy Conversion&Manage., vol. 44, pp. 2509-2517, 2002.

5. P. Yeunyongkul, Optimum design of heat pipe condenser for vapor compression refrigeration, Ph.D. of Thesis, Chiang Mai University, Chiang Mai, Thailand, 2012.

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