Study On Prediction Method Of Regional Cooling Load

In recent years,with the continuous development of reform and opening up,China’s economy has developed at a high speed,the living standards of residents have been continuously improved,and the demand for living has been continuously improved.It has changed from the original need to solve the problem of food and clothing to the pursuit of high-quality life.Air conditioning systems play an important role in improving the quality of life as a facility for regulating and improving indoor air quality.The problem of energy consumption that needs to be followed is also highlighted.This paper focuses on the research of cold load forecasting for regional cooling in regional energy.The purpose is to form indicators through a set of scientific methods to guide the more accurate cooling load in the planning stage.The calculations to influence the full use of energy and play a positive role in energy consumption.In view of the characteristics of district cooling,this paper proposes a cold load forecasting method suitable for the initial urban planning stage of the project: first select four buildings with representative different functions in the area: commercial building,hotel building,office building,residential Building,establish a simplified model of these four typical buildings;then analyze the influencing factors of the building’s cooling load,and propose the limiting factors of typical buildings,such as the internal and external disturbances of the building,and use this to establish simulations using TRNSYS software.Predictive model,finally applied TRNSYS to simulate the annual hourly cooling load and corresponding peak cooling load of different types of buildings and analyze and process them to obtain the regional cold load coefficient,which is the regional cooling system.The design and applicability analysis provide a basis for the finalization of the prediction method for the area for cooling and cooling loads and apply to the actual examples for analysis.This paper selects a district cooling project in Chongqing area with a long cooling period as an example,and divides the buildings with different functions in the area.The cooling load factor method and simulation method are used to calculate the cooling load of a typical day in the area.Comparing the calculation results obtained by the two methods,the advantages and disadvantages of the two methods and the rationality and accuracy of the cold load coefficient method are applied.Finally,the cold load coefficient method is applied to the regional system installed capacity and unit power consumption.And its applicability is analyzed,which clarifies that the application of this method can make a more accurate prediction of the cold load at the beginning of the building planning.The cold-cooling load forecasting method in this area avoids the large error caused by the extensive estimation of the traditional area index estimation method,and avoids the huge workload brought by the simple energy consumption software simulation.The cold load characteristic index obtained by this prediction method is of great significance for guiding the energy analysis in the urban planning stage and the configuration optimization of the urban energy system.