研究了一种以汽车尾气余热为动力源的汽车吸收式制冷系统。选择氨水系统是因为它适合所需的低温应用。典型长距离di~se1卡车的排气特性，如SCFM和排气温度与转速的关系，表明在满载和2000 rpm时，可获得20吨的制冷潜力。该值是通过假设只有一半的废热通过热交换器收集，并且系统的COP为0.5得出的。系统中设计了一个制冷储罐或板，以消除制冷输出的波动，并存储过剩的制冷容量，以供卡车发动机停止或低速运行时使用。 初步计算表明，由于附加表面引起的摩擦，排气系统中的附加压降比典型卡车排气系统中通常出现的压降小两个数量级。因此，用于能量提取的热交换器不太可能影响卡车发动机的性能。拟议系统的运营成本可以忽略不计。它非常安静，几乎不需要维护。废气驱动吸收系统的新特点是，当这些资源的供应迅速减少时，它将有助于节约宝贵的能源资源（本例中为液态石油）。引文:美国密歇根州底特律阿什雷交易记录第85卷第2部分

A truck absorption refrigeration system wh~ch utilizes the exhaust gas waste heat as the power source is studied. Ammonia-water system is chosen since it is suitable for the required low temperature application. The exhaust gas characteristics of a typical long haul di~se1 truck, such as SCFM and exhaust temperature vs rpm, indicate that at full load and 2,000 rpm, the refrigeration potential of 20 tons is available. This value is arrived at by assuming that only half of the waste heat is collected through the heat exchanger and that the COP of the system is 0.5.A refrigeration storage tank or plate is designed into the system to eliminate the fluctuation of the refrigeration output and to store the excess refrigeration capacity for use when the truck engine stops or operates at low speed. Preliminary calculations indicate that the additional pressure drop in the exhaust system due to friction caused by the additional surfaces is two order of magnitude smaller than the pressure drop that occurs normally in the exhaust system of a typical truck. Hence, the heat exchanger for energy extraction is not likely to affect the truck engine performance. Operating cost of the proposed system is negligible. It is very quiet and is practically maintenance free. The novel feature of the exhaust gas operated absorption system is that it will help conserve precious energy resources (liquid petroleum in this case) at a time when the supply of these resources is diminishing fast.