摘要
本文介绍了喷气增焓技术在热泵空调中的应用。EVI通过在系统中设置经济器来获得更高的制冷(热)量,同时提高系统效率。经济器有闪蒸器和板式换热器(过冷器)两种,文中分别给予了介绍。EVI有两种应用方案,分别侧重于提高低温环境下的制热量和能源效率,通过实测证明这两种方案能够达到相应的技术目的。
This article introduces the concept of Enhanced Vapor Injection (EVI)in heat pumps and air-conditioning system.EVI combines the economiser or intercooler principle with a scroll compressor and can be used to improve capacity and efficiency in both cooling and heating.There are two types of economiser:closed type using a heat exchanger and open type using a liquid/gas separator commonly called a flash tank.Both schemes can be used very effectively to improve heating capacity and efficiency in low ambient conditions.This paper discusses laboratory tests which show clearly that the theory of the economiser cycle works very effectively in real systems and that the system is cost effective to apply.
关键词
喷气增焓
经济器
高制热量
高效率
Enhanced Vapor Injection,Economizer,High heating capacity,High efficiency
