Application of Thermo Electric Generator to Operate Keluar Sign using Waste Heat of Air Conditioner Compressor

Nor Mariah Adam, Hanaa Kadhim and Pang Hung Yiu

This paper presents a case study of utilizing waste heat from a laboratory compressor air conditioner to operate a KELUAR sign signage using Thermo Electric Generator (TEG) as an alternative power source. The objective of this work is to determine the primary deign of TEG parameters with high power efficiency that can produce at least 4V dc followed by experimental to verify the design. A total of 18 pieces of TEG (40mm x 40mm x 3.4mm) were arranged and fixed onto an aluminium frame. This frame is fixed between air conditioner compressor (hot gas receiver tank) cool heat sink. The TEG was arranged in three lines comprising of 6 TEG units in each line. Electrical circuit built for charging 3.5V and connected with the KELUAR sign lights were successfully fabricated. The circuit was equipped with two convertors (0.9V to 5V DC-DC) to increase voltage. The experimental test shows maximum open circuit voltage obtained was 5.14V at 0.17 m/s air velocity, 73% relative humidity and 30.4 degrees centigrade of ambient temperature at Figure of Merit Value of approximately unity.

Volume 11 | 12-Special Issue

Pages: 814-817

DOI: 10.5373/JARDCS/V11SP12/20193280