A Method for Calculating Building Loads in Hot Summer and Cold Winter Regions Using Principal Component Decoupling

Abstract

The invention discloses a calculation method for determining building cooling and heating loads in hot summer and cold winter regions by using a principal component decoupling method, and divides factors affecting building cooling and heating loads into two categories: building own attribute parameters and operating attribute parameters. Calculation is carried out according to the following steps: Calculate the benchmark of cooling and heating load based on the indoor comprehensive heat dissipation power; calculate the radiation coefficient and temperature difference coefficient based on the building’s work and rest time; Calculate their correction coefficients in turn; calculate the coupling influence coefficient according to the coupling influence of its own attribute parameters and operating attribute parameters; finally calculate the average cooling and heating power per unit area of ​​the building in summer (winter) season and the cooling ( heat) amount. The invention can not only meet the precision requirements of engineering applications, but also quickly and economically calculate the cooling and heating loads of typical buildings in hot summer and cold winter regions, guide the design of distributed energy systems, and provide a basis for system operation optimization.

Description

technical field [0001] The invention belongs to the technical field of building energy consumption calculation in regional distributed energy planning, and specifically relates to a method for calculating building loads in hot summer and cold winter regions by using principal element decoupling. Background technique [0002] With the improvement of our country's economy and the continuous development of society, the concept of resource-saving and environment-friendly has begun to take root in the hearts of the people. Traditional industrial parks are transforming into science and technology ecological parks, and commercial centers and residential areas are transforming into comfortable and livable ones. Their power, cooling and heating load densities are relatively large and users are relatively concentrated. The traditional way of dividing production has low energy utilization efficiency and poor economic performance, which no longer meets the needs of the development of th...

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Problems solved by technology

[0005] These two methods have high accuracy, but there are three major problems in the practical application of distributed energy systems: (1) The two methods need to provide complete construction drawings and parameters of the building. In the early stage of regional energy planning, many At that time, there was only a general understanding of the building, and it was impossible to obtain complete parameters; (2) In the early stage of distributed energy system planning, buildings with different functions need to be configured to make the difference between the peak and valley of the cooling and heating load in the area as small as possible, and the designer needs to know the building load. Dynamic characteristics and the basis for its functional classification; (3) With the development of the region, parameters such as personnel density, simultaneous rate and work and rest time may change, and are quite different from the design working conditions.

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