Waste Heat Energy Recovery By an Innovative Organic Rankine Cycle Engine

在整个工业化世界，废热是在众多的制造和生产过程中产生的。从钢铁制造到铸造，到注塑，再到大型锅炉，在初级过程中没有直接使用的热量会“损失”到周围环境。传统上，这种热量被认为是低级的，没有用处，特别是当它的温度低于可靠地将水煮沸成蒸汽所需的温度时。然而，最近，利用有机朗肯循环（ORC）从这些废热中收集能量正在获得显著的关注。有机朗肯循环利用沸点低于水的工作流体。随后，废热常见的较低温度能够将流体相从液体变为气体。再加上合适的机械发动机，膨胀的气体可以驱动发电设备。复仇动力公司（revenge Power Inc.）正在研发这样一种发动机。下一代发动机，承诺更高的效率，更清洁的排放和更高的功率重量比，应用于农业，汽车，船舶，航空航天和军事工业的固定式和便携式发电。目前，该公司感兴趣的是利用发动机的潜力，从工业过程中产生的废热中回收发电能源。为了能够将发动机集成到优化的废热回收系统中，必须为支持整个电源电路的其他组件提供必要的设计数据。这些包括废热收集器，工作流体冷凝器和流体泵。这首先需要在此应用中全面确定发动机本身的热力学行为。随后，该提案的总体目标是VPI和温莎大学为他们的新引擎开发一个全面的计算机模型。该模型的目的是预测发动机在各种工况下的性能。这些信息将使VPI和大学能够设计出优化版本的支持组件，以完成效率优化的废热能量回收电路。

Across the industrialized world, waste heat is created in a multitude of manufacturing and production processes. From steel manufacturing, to casting, to injection molding, to large-scale boilers, heat not directly used in the primary process is "lost" to the surroundings. Traditionally this heat was regarded as low-grade and not useful, particularly if it was at temperatures below that required to reliably boil water into steam. More recently however, use of the organic Rankine cycle (ORC) to harvest energy from this waste heat is gaining notable attention. Organic Rankine cycles utilize working fluids that have lower boiling points than water. Subsequently, the lower temperatures that are common to waste heat are capable of changing the fluid phase from liquid to gas. Coupled with the appropriate mechanical engine, the expanding gases can drive electric generation equipment. Vengeance Power Inc. (VPI) is developing such an engine. A next generation engine that promises better efficiency, cleaner emissions and a higher power-to-weight ratio for applications in stationary and portable power generation in the agricultural, automotive, marine, aerospace and military industries. Currently the company is interested in exploiting the engine's potential in recovering generation energy from waste heat produced through industrial processes. To be able to integrate the engine into an optimized waste heat recovery system, necessary design data must be produced for the other components that support the complete power circuit. These include the waste heat harvester, working fluid condenser, and fluid pump. This first requires a comprehensive determination of the thermodynamic behavior of the engine itself in this application. Subsequently, the overarching goal of this proposal is for VPI and the University of Windsor to develop a comprehensive computer model of their novel engine. The aim of the model will be to predict the performance of the engine under a variety of operating conditions. This information will enable VPI and the University to then design optimized versions of the supporting components required to complete an efficiency-optimized waste heat energy recovery circuit.