Recent Patents on Mechanical Engineering

Khurshid Zaman  
Bentham Science Publishers
USA

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Recent Patents in Exhaust Heat Recovery Units

Author(s): Kwun-wah Wong

Affiliation: Department of Building and Construction, City University of Hong Kong, Tat Chee Avenue, Kowloon,Hong Kong SAR.

Keywords: Exhaust heat recovery unit, heat pipe, thermoelectric device, thermoelectric module, stirling engine

Abstract:

Exhaust Heat Recovery Unit (EHRU), also known as Exhaust Heat Exchanger, is a system that recovers the wasted thermal energy from the exhaust and makes use of it if possible. The heat recovery method is the main focus of EHRU. There are three common groups of EHRU. Each of them makes use of a different heat recovery mechanism: by coolant, by Stirling engine and by thermoelectric module. This paper shows patents in EHRU in recent years. It firstly explains the heat recovery mechanism of the three groups and the requirements. Then, it describes the working principle of how the thermal energy is recovered in respective invention and also shows the problems addressed by the inventors. Finally, it estimates the trend of the researches in the following years.

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Article Details

VOLUME: 1
ISSUE: 2
Page: [96 - 105]
Pages: 10
DOI: 10.2174/2212797610801020096