scholarly journals Devise of Thermoelectric Generator Incorporated of a Heat Exchanger for Power Generation and Heat Recovery

2020 ◽  
pp. 148-152
Author(s):  
Kanokorn Chooplod
Keyword(s):  
Power Generation ◽  
Heat Exchanger ◽  
Heat Recovery ◽  
Thermoelectric Generator

scholarly journals Heat Recovery and Power Generation Using Thermoelectric Generator

2019 ◽  
Author(s):  
Luis Vitorio Gulineli Fachini ◽  
Pedro Leineker Ochoski Machado ◽  
Larissa Krambeck ◽  
Romeu Miqueias Szmoski ◽  
Thiago Antonini Alves
Keyword(s):  
Power Generation ◽  
Heat Recovery ◽  
Thermoelectric Generator

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.

scholarly journals Car exhaust waste heat recovery using hexagon shaped thermoelectric generator

2021 ◽  
Vol 1 (1) ◽  
pp. 43-51
Author(s):  
Muhammad Fairuz Remeli ◽  
◽  
Baljit Singh ◽  
Keyword(s):  
Power Generation ◽  
Theoretical Model ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Thermoelectric Generator ◽  
Waste Heat ◽  
Combustion Engine ◽  
Early Stage ◽  
Electrical Performance ◽  
Engine System

Heat recovery technology using thermoelectric has attracted many research intentions mainly for its ability to generate power passively. The automotive engine usually produces waste heat ranging from 30-40% due to the thermodynamic limit. The use of thermoelectric generator (TEG) for waste heat recovery and power generation could increase the efficiency of the internal combustion engine system. This research developed and investigated a heat recovery system using a thermoelectric generator (TEG) for power generation. A thermoelectric generator (TEG) consisted of thermoelectric modules, hexagonal pipe connector and heat sinks was built and connected to an exhaust pipeline. A theoretical model was developed to access the thermal and electrical performance of the TEG system. The theoretical model consisted of the heat transfer mechanism including the thermal resistance networks from the flue gas to TEG and the heat sink. The electrical power output was determined using the Seebeck principle. The early stage of finding reveals that the system was able to produce an open circuit voltage of 0.13 V for a small temperature gradient of 3ᵒC between the cold and hot surface of the TEG. The further improvement of the system is currently under investigation for producing higher power. In the future, this system hopefully could replace the car battery for charging the alternator as well as increasing the overall efficiency of the engine system.

Design of an Organic Rankine Cycle for Waste Heat Recovery From a Portable Diesel Generator

2011 ◽  
Author(s):  
Frederick J. Cogswell ◽  
David W. Gerlach ◽  
Timothy C. Wagner ◽  
Jarso Mulugeta
Keyword(s):  
Power Generation ◽  
Heat Exchanger ◽  
Heat Recovery ◽  
High Speed ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Diesel Generator ◽  
Air Conditioners

A 5-kW Organic Rankine Cycle (ORC) was designed for mobile 60-kW diesel engine waste heat recovery applications to provide additional electricity for powering air conditioners. The ORC uses a non-flammable, near-zero-global-warming-potential fluid (Novec649) in a supercritical cycle. The system conceptual design and some observations on the component specification are described. The system will utilize an advanced oil-free high speed direct drive turbine. The proposed power generation module has a volume of ∼3 ft3 and contains the turbine, generator, pump, recuperator, and electrical components. The heat rejection heat exchanger is located on the power generation module in a configuration similar to mini-split air conditioners. The heat recovery heat exchanger (supercritical heater) is attached to the diesel generator and placed in series before the OEM muffler. The supercritical heater must be carefully designed to prevent the refrigerant from overheating, while still maintaining a high effectiveness.

scholarly journals Experimental Study on a Thermoelectric Generator for Industrial Waste Heat Recovery Based on a Hexagonal Heat Exchanger

Energies ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 3137
Author(s):  
Rui Quan ◽  
Tao Li ◽  
Yousheng Yue ◽  
Yufang Chang ◽  
Baohua Tan
Keyword(s):  
Heat Exchanger ◽  
Industrial Waste ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Thermoelectric Generator ◽  
Waste Heat ◽  
Coolant Temperature ◽  
Gas Temperature ◽  
Industrial Waste Heat ◽  
Clamping Pressure

To study on the thermoelectric power generation for industrial waste heat recovery applied in a hot-air blower, an experimental thermoelectric generator (TEG) bench with the hexagonal heat exchanger and commercially available Bi2Te3 thermoelectric modules (TEMs) was established, and its performance was analyzed. The influences of several important influencing factors such as heat exchanger material, inlet gas temperature, backpressure, coolant temperature, clamping pressure and external load current on the output power and voltage of the TEG were comparatively tested. Experimental results show that the heat exchanger material, inlet gas temperature, clamping pressure and hot gas backpressure significantly affect the temperature distribution of the hexagonal heat exchanger, the brass hexagonal heat exchanger with lower backpressure and coolant temperature using ice water mixture enhance the temperature difference of TEMs and the overall output performance of TEG. Furthermore, compared with the flat-plate heat exchanger, the designed hexagonal heat exchanger has obvious advantages in temperature uniformity and low backpressure. When the maximum inlet gas temperature is 360 °C, the maximum hot side temperature of TEMs is 269.2 °C, the maximum clamping pressure of TEMs is 360 kg/m2, the generated maximum output power of TEG is approximately 11.5 W and the corresponding system efficiency is close to 1.0%. The meaningful results provide a good guide for the system optimization of low backpressure and temperature-uniform TEG, and especially demonstrate the promising potential of using brass hexagonal heat exchanger in the automotive exhaust heat recovery without degrading the original performance of internal combustion engine.

DESIGN AND CONSTRUCTION OF A SIMPLE THERMOELECTRIC GENERATOR HEAT EXCHANGER FOR POWER GENERATION FROM SALINITY GRADIENT SOLAR POND

2015 ◽  
Vol 76 (5) ◽  
Author(s):  
Baljit Singh ◽  
Altenaijy Saoud ◽  
Muhammed Fairuz Remeli ◽  
Lai Chet Ding ◽  
Abhijit Date ◽  
...  
Keyword(s):  
Power Generation ◽  
Heat Exchanger ◽  
Thermal Energy ◽  
Thermoelectric Generator ◽  
Salinity Gradient ◽  
Electrical Power ◽  
Thermoelectric Generators ◽  
Lower Zone ◽  
Solar Pond ◽  
Electrical Power Output

Solar pond is one source of renewable thermal energy. The solar pond collects and stores thermal energy at the lower zone of the solar pond. The temperature at the lower zone can reach up to 90 °C. The solar pond is capable storing thermal energy for a long period. The stored thermal energy can be converted into electricity by using thermoelectric generators. These thermoelectric generators can be operated using the cold and hot zones from a solar pond. In this paper, the experimental investigation of power generation from the solar pond using thermoelectric generator and simple heat exchanger is discussed. A maximum of 7.02 W of electrical power output was obtained from a simple heat exchanger with 40 thermoelectric modules.

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