Abstract
In this study, the change of cooling water temperature (72, 85, 95 ℃) and engine speed (1,800, 2,000, 2,200, 2,400rpm) were experimentally investigated to confirm the operation performance characteristics of auxiliary engine for refrigeration unit. The experimental setup consisted of fuel consumption meter, power meter, and heat transfer unit. The operation performances such as BSFC, exhaust temperature, power generation, and engine efficiency of the auxiliary engine showed similar characteristics in the present experimental range, according to the change of cooling water temperatures and rpms. As the torque increased, the BSFC decreased significantly and the exhaust temperature increased. The power generation increased linearly and the efficiency was insignificant at more than 40 Nm torque.
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