化工学报2017，Vol.68Issue(8)：2959-2968,10.DOI:10.11949/j.issn.0438-1157.20170264
水制冷剂及水蒸气压缩机研究现状和展望
A review on development and prospect of water refrigerant and water vapor compressor
摘要
Abstract
As a representative of the fourth generation refrigerant, water has numerous advantages, such as non-pollution (ODP=0, GWP<1), accessible, low-cost, secure, stable and large latent heat of vaporization, which can completely satisfy the requirements of the environment as a refrigerant. However, low molecular weight, large specific volume and high adiabatic index of water vapor determine that the water vapor systems have the characteristics of small differential pressure, large compression ratio, small unit volume capacity, large volume flow and high discharge temperature. It also puts forward higher requirements for water vapor compressors, which seriously limit the use and promotion of water as a refrigerant. Currently, the water vapor compressors mainly are centrifugal, screw and roots compressor. Centrifugal water vapor compressor has the advantage of large volume flow rate, but it has small single stage compression ratio, high discharge temperature and droplet sensitivity. At the same time, the blade and shell material of the centrifugal water vapor compressor are severe and expensive. Therefore the centrifugal water vapor compressor is suitable for the largest volume flow rate and smallest compression ratio system. Screw water vapor compressor has the advantages of good stability, large compression ratio and wet compression; however the volume flow rate is smaller. It is more suitable for the refrigeration system with small volume flow rate and large compression ratio. Roots water vapor compressor has the advantages of less vibration components and simple structure, however it also has small compression ratio, so it is usually used in the medium heating capacity and large temperature rise systems. In order to promote water refrigerant to be wildly used in production and livelihood field, researching and developing practicable compressors for different usage occasions and steam requirements is an interesting and significant research project in future.关键词
水制冷剂/压缩机/压比/排气温度Key words
water refrigerant/compressor/compression ratio/discharge temperature分类
机械制造引用本文复制引用
吴迪,胡斌,王如竹,江南山,李子亮..水制冷剂及水蒸气压缩机研究现状和展望[J].化工学报,2017,68(8):2959-2968,10.基金项目
国家重点研发计划项目(2016YFB06012010). :supported by the National Key R & D Program of China (2016YFB06012010). （2016YFB06012010）
