The annual air conditioning load of a commercial complex building in Guangzhou is calculated.Through simulation analysis,it can be seen that in the range of 40%to 80%of the design load,the time proportion is the highest,about 67.6%.When selecting the refrigeration host,it should operate efficiently in the part of the load interval with a high time proportion as much as possible,so as to achieve the purpose of energy saving and carbon reduction in later operation.Based on the load characteristics of the project,this paper analyzes the capacity collocation method of the refrigeration host of the water-cooled chilled water air conditioning system.By establishing the annual air conditioning operation model,the annual energy consumption simulation analysis is carried out for different collocation methods,and the main equipment investment of different refrigeration unit collocation schemes is summarized,aiming at selecting suitable,efficient and economic collocation method for this project.After selecting the refrigeration unit collocation scheme,the control strategy under different load rates is provided for the reference of the later operation team.
refrigeration hostannual analysisselection and collocationoperation strategy