Enhanced Heat Dissipation Performance of Automotive LED Lamps Using Graphene Coatings
Graphene heat-dissipating coating (GNHC) of 0.6 wt % GN concentration is utilized to promote the cooling performance of automotive light-emitting diode (LED) lamps. Three cases are studied as follows: Case 0 is the original automotive LED lamp as the baseline. Case 1 is to apply GNHC to reduce the t...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-12-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/1/50 |
| _version_ | 1797497883466924032 |
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| author | Tun-Ping Teng Wei-Jen Chen Chun-Hsin Chang |
| author_facet | Tun-Ping Teng Wei-Jen Chen Chun-Hsin Chang |
| author_sort | Tun-Ping Teng |
| collection | DOAJ |
| description | Graphene heat-dissipating coating (GNHC) of 0.6 wt % GN concentration is utilized to promote the cooling performance of automotive light-emitting diode (LED) lamps. Three cases are studied as follows: Case 0 is the original automotive LED lamp as the baseline. Case 1 is to apply GNHC to reduce the thermal resistance of the junction surfaces between the components of automotive LED lamps. The aluminum fin radiator of Case 1 is further coated with GNHC on the surface that becomes Case 2. The spectrum, illuminance, power consumption, and surface temperature are measured at different ambient temperatures (<i>T<sub>a</sub></i>) to fully evaluate the feasibility of applying GNHC to improve cooling performance and the impacts on the related characteristics of automotive LED lamps. The results show that the maximum illuminance efficacy of Case 1 and Case 2 with high beam, irradiation angle of 0 degrees, and <i>T<sub>a</sub></i> of 80 °C is 11.03% and 8.70% higher than that of Case 0, respectively. The minimum temperature difference of heat dissipation path of Case 1 and Case 2 with high beam, irradiation angle of 90 degrees, and <i>T<sub>a</sub></i> of 80 °C is 6.41% and 5.33% lower than that of Case 0, respectively, indicating GNHC as a promising coating material for improving the cooling performance of automotive LED lamps. |
| first_indexed | 2024-03-10T03:26:33Z |
| format | Article |
| id | doaj.art-f7becb9db42944b2b993522ad7c67925 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T03:26:33Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-f7becb9db42944b2b993522ad7c679252023-11-23T12:09:05ZengMDPI AGPolymers2073-43602021-12-011415010.3390/polym14010050Enhanced Heat Dissipation Performance of Automotive LED Lamps Using Graphene CoatingsTun-Ping Teng0Wei-Jen Chen1Chun-Hsin Chang2Undergraduate Program of Vehicle and Energy Engineering, National Taiwan Normal University, No. 162, Sec. 1, He-ping E. Road, Da-an District, Taipei City 10610, TaiwanUndergraduate Program of Vehicle and Energy Engineering, National Taiwan Normal University, No. 162, Sec. 1, He-ping E. Road, Da-an District, Taipei City 10610, TaiwanUndergraduate Program of Vehicle and Energy Engineering, National Taiwan Normal University, No. 162, Sec. 1, He-ping E. Road, Da-an District, Taipei City 10610, TaiwanGraphene heat-dissipating coating (GNHC) of 0.6 wt % GN concentration is utilized to promote the cooling performance of automotive light-emitting diode (LED) lamps. Three cases are studied as follows: Case 0 is the original automotive LED lamp as the baseline. Case 1 is to apply GNHC to reduce the thermal resistance of the junction surfaces between the components of automotive LED lamps. The aluminum fin radiator of Case 1 is further coated with GNHC on the surface that becomes Case 2. The spectrum, illuminance, power consumption, and surface temperature are measured at different ambient temperatures (<i>T<sub>a</sub></i>) to fully evaluate the feasibility of applying GNHC to improve cooling performance and the impacts on the related characteristics of automotive LED lamps. The results show that the maximum illuminance efficacy of Case 1 and Case 2 with high beam, irradiation angle of 0 degrees, and <i>T<sub>a</sub></i> of 80 °C is 11.03% and 8.70% higher than that of Case 0, respectively. The minimum temperature difference of heat dissipation path of Case 1 and Case 2 with high beam, irradiation angle of 90 degrees, and <i>T<sub>a</sub></i> of 80 °C is 6.41% and 5.33% lower than that of Case 0, respectively, indicating GNHC as a promising coating material for improving the cooling performance of automotive LED lamps.https://www.mdpi.com/2073-4360/14/1/50automotive LED lampscombined junctiongraphene heat-dissipating coatings (GNHC)illuminance efficiencythermal resistance |
| spellingShingle | Tun-Ping Teng Wei-Jen Chen Chun-Hsin Chang Enhanced Heat Dissipation Performance of Automotive LED Lamps Using Graphene Coatings Polymers automotive LED lamps combined junction graphene heat-dissipating coatings (GNHC) illuminance efficiency thermal resistance |
| title | Enhanced Heat Dissipation Performance of Automotive LED Lamps Using Graphene Coatings |
| title_full | Enhanced Heat Dissipation Performance of Automotive LED Lamps Using Graphene Coatings |
| title_fullStr | Enhanced Heat Dissipation Performance of Automotive LED Lamps Using Graphene Coatings |
| title_full_unstemmed | Enhanced Heat Dissipation Performance of Automotive LED Lamps Using Graphene Coatings |
| title_short | Enhanced Heat Dissipation Performance of Automotive LED Lamps Using Graphene Coatings |
| title_sort | enhanced heat dissipation performance of automotive led lamps using graphene coatings |
| topic | automotive LED lamps combined junction graphene heat-dissipating coatings (GNHC) illuminance efficiency thermal resistance |
| url | https://www.mdpi.com/2073-4360/14/1/50 |
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