An Economic Comparison between Two Types of Heating and Air-Conditioning Systems for Public Buildings in Severely Cold Regions

The overall cost of the cooling type air-conditioning plus central heating system is less than that of the all-season air conditioning system in life spans of the two types of systems, which demonstrates the applicability of the principle on design of heating, ventilation and air-conditioning in chapter 5 of Standards of Design for Energy Conservation for Public Building, which suggests that the central heating system should be adopted instead of the air-conditioning system for public buildings in severely cold regions.