Theoretical Study of Shell-and-Tube Heat Exchanger Effectiveness on Batch  Drying of Sawdust Utilizing Waste Heat from Organic Rankine Cycle

M. Arief Yahdi; Edy Hartulistiyoso; Muhamad Yulianto

doi:10.23960/jtep-l.v14i1.71-82

Authors

M. Arief Yahdi IPB University
Edy Hartulistiyoso IPB University http://orcid.org/0000-0002-5837-1555
Muhamad Yulianto IPB University http://orcid.org/0000-0003-1761-348X

DOI:

https://doi.org/10.23960/jtep-l.v14i1.71-82

Abstract View: 253

Abstract

Steam power plant has flue gas that are generally discharged into environment. The exhaust gases from internal combustion contain thermal energy that can be utilized for drying processes, which can enhance the energy efficiency of the Organic Rankine Cycle (ORC) system. This research focuses on the use of waste heat for drying applications through heat exchangers. The objective of this work is to study the performance of shell-and-tube type heat exchanger in utilizing waste heat from an ORC system for drying applications. Experimental data was obtained by varying the air velocity of the dryer to validate the numerical simulations. The results showed that increasing air velocity in the heat exchanger caused a decrease in heat exchanger outlet temperature, water vapor mass, and heat exchanger effectiveness. The decrease in these parameters reduces heat transfer required for drying, so water mass rate of material decreases and drying time gets longer. Validation of simulation and experiment data for outlet heat exchanger temperature was determined by MAPE value of less than 20% which means good prediction model.

Keywords: Air velocity, Drying, Effectiveness heat exchanger, Exhaust gas, Heat exchanger.

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Author Biographies

M. Arief Yahdi, IPB University

Department of Mechanical and Biosystem Engineering Faculty of Engineering and Technology IPB University

Edy Hartulistiyoso, IPB University

Department of Mechanical and Biosystem Engineering Faculty of Engineering and Technology IPB University

Muhamad Yulianto, IPB University

Department of Mechanical and Biosystem Engineering Faculty of Engineering and Technology IPB University

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