Building cooling and heating load calculation method

Abstract

The embodiment of the invention provides a method for calculating the cooling and heating load of a building. The method comprises the steps that the total heat obtaining amount and the total heat transfer amount of each calculation time step length are obtained; wherein the total heating amount comprises the total indoor heating amount and the total room solar radiation total heating amount; wherein the total heat transfer amount comprises heat transfer amount of a room through an enclosure structure and room ventilation heat exchange amount; and according to the total indoor heating amount,the total room solar radiation heating amount, the heat transfer amount of the room through an enclosure structure and the ventilation and heat exchange amount of the room, a cooling load and a heating load are calculated respectively. According to the method for calculating the building cooling and heating load, the building cooling and heating load can be accurately and rapidly calculated.

Description

Technical field [0001] The embodiment of the present invention relates to the field of construction technology, in particular to a method for calculating the cooling and heating load of a building. Background technique [0002] At present, energy conservation is an important issue of social concern, and the amount of energy consumption in the building sector is huge. Therefore, how to quickly and accurately calculate the cooling and heating load of a building is particularly important. [0003] In the prior art, dynamic calculation tools such as DOE-2, Energyplus, and DeST are used to calculate building cooling and heating load. The core idea is to simulate and calculate the dynamic thermal process of building cooling and heating load based on the room heat balance equation to obtain different meteorological conditions. In addition to the conditions of use and the temperature changes in the building under the conditions of different cooling and heat input from the air-conditioning ...

AI Technical Summary

Problems solved by technology

However, the above-mentioned dynamic load calculation method has the following defects: 1) The time scale is relatively short, generally 1h or less, the calculation is complex, the calculation amount is huge, and the calculation time spent is relatively large

2) In order to solve the heat balance equation in dynamic calculation, continuous iteration is often required, so the calculation is unstable and difficult to converge

3) Since the heat and humidity process and control methods of buildings are very complex, and there are many influencing factors, the dynamic calculation method still needs to be assumed and simplified when dealing with it, which is different from the actual situation, and the simulation results still have deviations

4) Due to the large number of input parameters required in the dynamic calculation, some of the parameters depend on the user's proficiency in the software and individual experience, and there are differences, which lead to large differences in the calculation results, resulting in different or even opposite conclusions, which is important for engineering Building compliance assessments pose a major headache, limiting upgrades to performance-based approaches to building design

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