scholarly journals Investigation of temperature distribution performances of three different heat exchanger models for exhaust gas waste heat energy recovery system used with thermoelectric generator in gasoline engines

2021 ◽  
Author(s):  
Haluk GÜNEŞ
Keyword(s):  
Heat Exchanger ◽  
Temperature Distribution ◽  
Energy Recovery ◽  
Thermoelectric Generator ◽  
Waste Heat ◽  
Heat Energy ◽  
Exhaust Gas ◽  
Gasoline Engines ◽  
Recovery System ◽  
Heat Energy Recovery

scholarly journals Energy efficiency improvement in the system for drying baker`s yeast

2019 ◽  
Vol 38 (1) ◽  
pp. 115
Author(s):  
Aleksandar Kosta Anastasovski
Keyword(s):  
Heat Exchanger ◽  
Energy Recovery ◽  
Process Integration ◽  
Waste Heat ◽  
Heat Energy ◽  
Production Costs ◽  
Main Task ◽  
Heat Process ◽  
Heat Exchanger Networks ◽  
Heat Energy Recovery

Drying processes are one of the main consumers of heat energy in production. Any decreases in heat consumption during the drying process will considerably decrease production costs. This study analyzes the high consumption of heat in the drying of baker`s yeast. The main task is to minimize the energy demand and lower the price of the final products with partial heat recovery. These changes will require system modifications. One of the most popular and effective methods that can be used in this case is heat process integration with Pinch Technology. In this study, a reference system was simulated with a mathematical model and analyzed for waste heat streams.This paper suggests the redesigning of a drying system for production of active dry yeast.  Selected streams that satisfy conditions for heat process integration were involved in the evaluation for a better solution. Two different scenarios were proposed as possible solutions. The suggested solutions are retrofit designs of Heat Exchanger Networks. These Heat Exchanger Networks include already installed heat exchangers as well as new heat transfer units. The selection of better design was made with economic analysis of investment. The proposed scenarios of the analyzed sub-system give improvement in heat energy recovery. The best determined solution reduces the cost and thus has the highest profitability, but not the highest heat energy recovery.

scholarly journals A framework for waste heat energy recovery within data centre

2019 ◽  
Vol 158 ◽  
pp. 3788-3794 ◽  
Author(s):  
Yang Luo ◽  
John Andresen ◽  
Henry Clarke ◽  
Matthew Rajendra ◽  
Mercedes Maroto-Valer
Keyword(s):  
Energy Recovery ◽  
Waste Heat ◽  
Heat Energy ◽  
Data Centre ◽  
Heat Energy Recovery

Modelling and Design of Thermoelectric Generator for Waste Heat Recovery

2016 ◽  
Author(s):  
Dongxu Ji ◽  
Alessandro Romagnoli
Keyword(s):  
Heat Exchanger ◽  
Output Power ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Thermoelectric Generator ◽  
Waste Heat ◽  
Current Model ◽  
Waste Heat Recovery System ◽  
Recovery System ◽  
Heat Recovery System

In order to design an effective thermoelectric generator (TEG) heat exchanger for waste heat recovery, an accurate model is required for system design and performance predicting. In this paper, 1-D model is developed in MATLAB, taking into consideration of the multi-physics phenomena within TEG. The proposed model is different from existing thermoelectric models which mainly focus on the thermoelectric couple or device level without providing any guidance for designing an optimal system. When optimizing some TEG parameters, the optimal value found in a device level model might not be suitable when put into a waste heat recovery system. Therefore, in order to develop an optimized TEG system with optimum output power performance, a more comprehensive thermoelectric model integrated with the other components is needed. The current model integrates the thermoelectric module with the heat exchangers. Through this study, we found that the heat exchanger and module design have an impact on the total TEG output power in waste heat recovery system and a systematic design approach is needed.

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