Case study of liquid cooling of automotive headlights with hollow fiber heat exchanger

• DOI: 10.1016/j.csite.2021.101689
• Publication Date: 2021-12-04T02:41:14Z
• Authors: Krystof Mraz; Erik Bartuli; Tereza Kroulikova; Ilya Astrouski; Ondrej Resl; Jan Vancura; Tereza Kudelova
• Keywords: Radiator (engine cooling); Computer cooling

Thermal performance of small liquid cooling systems based on polymeric hollow fibers was experimentally studied for the automotive lighting components integrated with high power Light Emitting Diodes (LEDs). Firstly, tests control electric heaters a printed circuit board (PCB) were performed to precisely measure thermal performance. The effect system installed PCB Skoda Octavia 4 (SK38) and Enyaq (SK316) tested as second step. Results testing show that proposed plastic radiators ensure efficient uniform PCBs keep LEDs operation temperature much below recommended 110 °C. As heat generation is relatively (tens watts), there only 3–10 l/h flow rate coolant needed, allowing operate radiator low velocity pressure drops (below 1 kPa). Additionally, apart from excellent cooling, are about ten times lighter than their aluminium passive finned competitors.