A waste heat recovery system consisting of a hybrid power and cooling cycle is described in this paper. It couples a thermoelectric generator (TEG) and an organic Rankine cycle driving a vapor compression cycle to implement heat activated power and cooling. The system was designed, developed, and tested under laboratory conditions using a hot air source simulating a heavy-vehicle exhaust stream. The hybrid or so-called cofunctional power and cooling system was designed to approach the size of a fieldable unit for testing with mobile diesel generators or heavy-vehicle exhaust streams, which have strict requirements for size, weight, and efficiency. As a result, microchannel heat exchangers were used extensively throughout the system design. High-temperature bismuth telluride (${\mathrm{Bi}}_2{\mathrm{Te}}_3$) thermoelectric (TE) modules were used, and the TEG section contained 20 modules in two distinct electrical strings sandwiched between microchannel cold-side and hot-side heat exchangers. The cofunctional system has shown stable operation during tests conducted at various incoming hot air temperatures up to 388°C, simulating common heavy-vehicle exhaust stream conditions. Although the TEG power output was significantly lower than the design value because of reduced heat transfer into the TE modules due to contact area mismatch and significant heat loss, many system performance parameters reached or even exceeded the target values at design conditions. Design modifications are being implemented to incorporate custom-designed TE modules into the system and to reduce the TE cold-side temperature to improve the TEG output.

本文介绍了一种由混合动力和冷却循环组成的废热回收系统。它将热电发生器（TEG）和有机朗肯循环耦合在一起，从而驱动蒸汽压缩循环以实现热活化功率和冷却​​。该系统是在实验室条件下使用热空气源模拟重型车辆排气流进行设计，开发和测试的。混合动力或所谓的共功能动力和冷却系统设计为接近可移动单元的尺寸，以使用移动式柴油发电机或重型车辆排气流进行测试，这对尺寸，重量和效率都有严格的要求。结果，在整个系统设计中广泛使用了微通道热交换器。高温碲化铋（${双}_2{特}_3$）使用热电（TE）模块，并且TEG部分在两个不同的电串中包含20个模块，它们夹在微通道冷侧和热侧热交换器之间。该协同功能系统在各种高达388°C的传入热空气温度下进行的测试过程中显示出稳定的运行状态，可模拟常见的重型车辆排气流状况。尽管由于接触面积失配和明显的热损失，减少了向TE模块的热传递，所以TEG的功率输出明显低于设计值，但许多系统性能参数在设计条件下均达到甚至超过了目标值。正在实施设计修改，以将定制设计的TE模块合并到系统中，并降低TE冷侧温度，以提高TEG输出。