Performance Analysis of Custom-Designed Heat Exchanger and Latent Heat Thermal Energy Storage System for Diesel Engine Exhaust Waste Recovery System

被引：0
作者：
M. R. Wilson John
L. R. Ganapathy Subramanian
机构：
[1] Dr. M.G.R. Educational and Research Institute,Department of Mechanical Engineering
[2] SRM University,Aerospace Engineering, School of Mechanical Engineering
来源：
Iranian Journal of Science and Technology, Transactions of Mechanical Engineering | 2019年 / 43卷
关键词：
Diesel engine; Heat exchanger; Heat recovery; Latent heat thermal storage system; PCM;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The current study presents an experimental analysis of a custom-designed heat exchanger (CDHX), for recovering the waste heat energy of the exhaust gas from a stationary diesel engine. It has triangular external finned tubular construction with its shell flue side fitted with segmental baffles sloped at 20°, to effectively extract heat to raise the tube side circulating thermal oil temperature for sensible heat rise. This, in closed loop, transfers the heat to non-moving, sealed and filled thermal storage system with phase change material (PCM) as the latent heat energy. From the third closed loop circulating water from the thermal storage, it indirectly supplies the heat for steady and peak state process consumptions. Balmerol prototherm medium heat transfer oil and water circulations are used as the respective heat extraction liquid media during the charging and discharging process, with PCM at varied levels of molten conditions. The temperature rise behavior of the heat transfer fluid in the CDHX under different load conditions of the engine is studied. The thermal performance analysis of the CDHX has been evaluated using effectiveness and heat extraction rates. The behavior of PCM temperature in the latent heat thermal energy storage (LHTES) tank during charging and discharging process is studied. The evaluation of the performance of the LHTES system has been analyzed by estimating the charging rate with increased melted liquid and latent heat energy stored during the charging process and discharging rate of PCM during solidification process. It is found that nearly 53–60% of stored material latent heat energy is recovered from the PCM in the LHTES tank. It is used by closed loop hot water circulation during discharging process for steady-state drying of food products to reduce the gap between demand and supply of energy. The maximum heat extraction rate of the CDHX integrated with LHTES tank is 3.9 kW, and the charging rate in the LHTES tank is 1.550 kW at full-load condition of the engine. At the flow rate of water of 6 lpm, the maximum heat discharge rate of PCM in the LHTES tank is 0.710 kW and it decreases to 0.58 and 0.47 kW for reduced 4 and 2 lpm flows, respectively. The water temperature that rises nearly 72 °C during discharging process of LHTES tank for 70-min duration achieved at the flow rate of 6 lpm.
引用
收藏
页码：679 / 694
页数：15
相关论文
共 190 条
[1]  
Abdulateef AM(2017)Experimental and computational study of melting phase-change material in a triplex tube heat exchanger with longitudinal/triangular fins Sol Energy 155 142-153
[2]  
Mat S(2014)A numerical and experimental study of solidification around axially finned heat pipes for high temperature latent heat thermal energy storage units Appl Therm Eng 70 609-619
[3]  
Sopian K(2016)An experimental investigation of shell and tube latent heat storage for solar dryer using paraffin wax as heat storage material Int J Eng Sci Technol 19 619-631
[4]  
Abdulateef J(2016)Potential for exhaust gas energy recovery in a diesel passenger car under European driving cycle Appl Energy 174 201-212
[5]  
Gitan AA(2010)A review of materials, heat transfer and phase change problem formulation for latent heat thermal energy storage systems (LHTESS) Renew Sustain Energy Rev 14 615-628
[6]  
Abdulmajed KA(2017)Numerical investigation of heat transfer intensification in shell and helically coiled finned tube heat exchangers and design optimization Chem Eng Process 121 125-143
[7]  
Tan L(2016)CFD simulation study of shell and tube heat exchangers with different baffle segment configurations Appl Therm Eng 108 999-1007
[8]  
Date A(2014)Review of waste heat recovery mechanisms for internal combustion engines J Therm Sci Eng Appl 6 1-9
[9]  
Akbarzadeh A(2013)Waste heat recovery from a diesel engine using shell and tube heat exchanger Appl Therm Eng 61 355-363
[10]  
Agarwal A(2016)Storing surplus solar energy in low temperature thermal storage for refrigeration applications Energy Build 122 192-198
12345678910