Performance Analysis of Graphene-Coated Heat Pipe Heat Exchangers for Automobile Exhaust Cooling and Purification

2025-01-5006

01/23/2025

Features
Event
Automotive Technical Papers
Authors Abstract
Content
This research investigates the development of a heat pipe heat exchanger coated with graphene for cooling and purification of automobile exhausts. The heat exchanger directly affects the performance of the engine because proper heat dissipation and transfer can improve engine performance, reduce fuel consumption, and decrease the emission. Moreover, this effect is much more noticeable on coated heat pipes because of the enhanced thermal conductivity and mechanical properties of the graphene films. A heat null emitted by internal combustion engines was used in the experimental setup to test the thermal performance, cooling efficiency, and purification efficiency of the newly designed in-house exhaust simulation system where the new heat pipes were inserted. The results of the experiment show that the heat pipes have very high thermal performance as the efficiency of the heat pipes was calculated to be around 85%. Furthermore, the temperature decrease over the surfaces of the heat exchanger was measured at 350°C, which means 70% of the exhaust gas temperature was cooled. The purification efficiency of the heat pipes was approximately 70% for nitrogen oxides, particulate matter, carbon monoxide, and hydrocarbons, all which are harmful pollutants produced by internal combustion engines. Since these substances were reduced by about 70%, the results and the use of the graphene coats demonstrate the effectiveness and feasibility of such a heat pipe for emission reduction. Consequently, a graphene-coated heat pipe heat exchanger is recognized as a highly effective device for enhancing engine performance, reducing fuel consumption, and promoting more efficient transportation with lower emissions.
Meta TagsDetails
DOI
https://doi.org/10.4271/2025-01-5006
Pages
11
Citation
Karthigairajan, M., Seeniappan, K., Balaji, N., Natrayan, L. et al., "Performance Analysis of Graphene-Coated Heat Pipe Heat Exchangers for Automobile Exhaust Cooling and Purification," SAE Technical Paper 2025-01-5006, 2025, https://doi.org/10.4271/2025-01-5006.
Additional Details
Publisher
Published
Jan 23
Product Code
2025-01-5006
Content Type
Technical Paper
Language
English