中温供水大温差集中空调系统能效分析

Energy efficiency of central air conditioning system with medium temperature water supply and large temperature difference

为了研究基于新型中温供水大温差空调末端的超高效空调系统的运行能效及经济性优势,本文首先介绍了中温供水大温差超高效空调系统逐时仿真流程,然后基于一个典型工程案例,分别设立常规空调系统方案、中温供水空调系统和中温供水大温差空调系统方案对其进行全年逐时能耗仿真。结果表明:中温供水大温差空调系统(方案5)制冷机房能效可达7.20,相比常规全定频(方案1)提升107%;相对于传统方案,中温供水大温差系统初投资仅增加18.4%,在2~3年内即可回收。

In order to study the operational energy efficiency and economic advantages of the ultra-high-efficiency air conditioning system based on the new medium temperature water supply and large temperature difference(MTLD) air conditioning terminal, this article first presents the hourly simulation process of the MTLD ultra-high-efficiency air conditioning system, and then establishes the conventional air conditioning system scheme, the medium temperature water supply air conditioning system scheme, and MTLD air conditioning system scheme to simulate their annual hourly energy consumption based on a typical engineering case. The results show that the energy efficiency of the refrigerator room of the MTLD air conditioning system(scheme 5) can reach 7.20, which is 107% higher than that of the conventional full fixed frequency air conditioning system(scheme 1). Compared with the traditional scheme, the initial investment of MTLD air conditioning system only increases by 18.4%, which can be recovered within 2 to 3 years.