The wasted energy from a car exhaust can be considered as the heat supply for an absorption refrigeration cycle. In practice however, application of such cooling systems in automobiles has been facing a number of technical restrictions one of which is once the car engine runs idle or at low speed. To tackle this matter, the present experimental study has been carried out. A commercial diffusion absorption refrigerator with internal volume of 0.04 cubic meters (Electrolux 27A1) and the exhaust flow from a compact car engine (X100 KIA) are applied. Various engine speeds (1000–2500 rpm) have been tested. First, it was confirmed that the amount of heat transferred to the generator at low engine speeds was not adequate to obtain the low temperature required for the refrigerator compartment. A new generator was therefore designed and built. The experimental results show that by using the modified generator, the heat transfer to the generator improves by more than 19%. The evaporator and refrigerator compartment reached the desirable temperatures of −5.7 °C and 4.2 °C respectively at the engine speed of 2000 rpm. Further improvement of the results was observed at the engine speed of 1000 rpm where the temperatures at the evaporator and the refrigerator compartment were reduced by about 4 °C once the modified generator was applied.

来自汽车尾气的浪费的能量可以被认为是吸收式制冷循环的热量供应。然而，实际上，这种冷却系统在汽车中的应用面临许多技术限制，其中之一是一旦汽车发动机空转或以低速运转。为了解决这个问题，已经进行了本实验研究。使用了内部容积为0.04立方米的商用扩散吸收式制冷机（Electrolux 27A1）和紧凑型汽车发动机（X100 KIA）的废气流。已经测试了各种发动机转速（1000–2500 rpm）。首先，证实了在低发动机转速下传递到发电机的热量不足以获得冷藏室所需的低温。因此，设计并制造了一种新的发电机。实验结果表明，通过使用改进的发电机，到发电机的热传递提高了19％以上。在2000 rpm的发动机转速下，蒸发器和冷藏室的温度分别达到-5.7°C和4.2°C的理想温度。在转速为1000 rpm的发动机转速下观察到了结果的进一步改进，一旦使用了改进型发电机，蒸发器和冷藏室的温度将降低约4°C。