热泵的使用.docVIP

The Applications of Heat pumps 热泵的应用 1.Heat pumps in industry 1、热泵在工业领域的应用 1). Systems 1）系统 Relatively few heat pumps are currently installed in industry. However, as environmental regulations become stricter, industrial heat pumps can become an important technology to reduce emissions, improve efficiency, and limit the use of ground water for cooling 目前，相对较少的热泵在工业领域安装使用，然而，随着环保规范的愈加严厉，工业热泵能够成为减少污染物排放、提升效率和限制用于冷却的地下水使用的一项重要技术。 To ensure the sound application of heat pumps in industry, processes should be optimised and integrated. Through process integration improved energy efficiency is achieved by thermodynamically optimising total industrial processes. An important instrument for process integration is pinch analysis, a technology to characterise process heat streams and identify possibilities for heat recovery. Such possibilities may include improved heat exchanger networks, cogeneration and heat pumps. Pinch analysis is especially powerful for large, complex processes with multiple operations, and is an excellent instrument to identify sound heat pump opportunities. 为了保证热泵在工业领域合理可靠的应用，其工作流程应该做到优化和整合。虽然流程整合提升能源效率是从热力学角度整合总体工业流程获得的，然而流程整合的一个重要手段是夹点分析，这是一项描述热流过程和定义热回收可能性的技术 Industrial applications show a great variation in the type of drive energy, heat pump size, operating conditions, heat sources and the type of application. The heat pump units are generally designed for a specific application, and are therefore unique. The major types of industrial heat pumps are: Mechanical vapour recompression systems (MVRs), classified as open or semi-open heat pumps. In open systems, vapour from an industrial process is compressed to a higher pressure and thus a higher temperature, and condensed in the same process giving off heat. In semi-open systems, heat from the recompressed vapour is transferred to the process via a heat exchanger. Because one or two heat exchangers are eliminated (evaporator and/or condenser) and the temperature lift is generally small, the perfo