首页|Cooling power characteristics of half-cycle refrigeration system in LPG fuelled vehicles by auxiliary chiller as heat exchanger
Cooling power characteristics of half-cycle refrigeration system in LPG fuelled vehicles by auxiliary chiller as heat exchanger
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NSTL
Elsevier
This study reports an experimental investigation of cooling power harvesting in LPG-fueled vehicles. The heat of vaporization for LPG in the vaporizer which is initially transferred from the engine coolant is modified by circulating low-temperature water by adding a chiller which placed on a three-passenger pick-up car. Low-temperature water is circulated from the chiller to the vaporizer and back to the chiller by a pump to transfer the cooling power. Meanwhile, the air from the cabin is flowed by an electric blower across the chiller and back to the cabin to transfer heat to the water loop in the chiller. The test was carried out on Daihatsu 1945 cm(3) at 1000, 2000, and 3000 rpm, where LPG consumption followed the engine load and obtained LPG mass flow rates of 0.022, 0.236, and 0.350 g.s(-1). With this vaporizer-chiller combination, the average cooling power of 41.51, 52.05, 110.29 W is obtained at 1000, 2000, and 3000 rpm, respectively. With an average cooling power of 124.5 W at 3000 rpm, it was proven to compensate for the thermal load in the cabin by 15.312, 11.67, and 80.31 kJ at 100, 2000, and 3000 rpm for 60 min of testing. This method can be applied as a secondary AC system to improve the performance of the main AC system in a vehicle. The actual cooling power from the LPG to the water loop can be increased by modifying the heat transfer contact area in the vaporizer cavity or by applying a high-efficiency vaporizer.
Setiyo, Muji、Purnomo, Bagiyo Condro、Waluyo, Budi、Munahar, Suroto、Rochman, Muhammad Latifur、Saleh, Arif Rahman、Fatmaryanti, Siska Desy、Samuel, Olusegun David
NSTL
Elsevier
