Method for determining weighted external temperature for constant flow control of heat supply system

Abstract

The invention discloses a method for determining a weighted external temperature for constant flow control of a heat supply system, and belongs to the engineering field of energy utilization. According to the invention, on the basis of analyzing and determining a linear relation between the room temperature at a current moment and the external temperature at the current and previous historical moments, building thermal environment simulation analysis software is applied to calculate annual hourly room temperatures, the annual hourly room temperatures and the external temperatures form a statistical sample data set, then a linear relation between the room temperature and the external temperature is quantitatively analyzed through a multiple linear regression statistical method, and weighting coefficients corresponding to the external temperatures at the current and previous historical moments are determined so as to construct a set of weighted external temperature analysis and determination method is constructed. According to the method, the common influence of the external temperatures at the current and previous historical moments on the current indoor temperature environment is reflected in a weighted external temperature form, and the attenuation and delay characteristics of the external temperature influence under the thermal inertia effect of a building envelope structure are reflected. On the basis, the water supply temperature can be reasonably adjusted, so that matched compensation can be performed on the influence of the external temperature and other disturbances. Meanwhile, the method is high in operability and clear in application process and step.

Description

technical field [0001] The invention relates to a method for determining a weighted external temperature for quality adjustment of a heating system, belonging to the engineering field of energy utilization. Background technique [0002] The building heat load varies dynamically with the outdoor temperature. In this regard, in order to ensure the mutual balance between the heat supply at the heat source end and the heat demand at the building user end, and avoid unnecessary energy consumption caused by "overheating" at the user end, it is necessary to take adjustment measures for the heat supply of the heating system to achieve Heat on demand. Operation regulation is the key link to ensure the safe, stable and economical operation of heating system. Quality adjustment is the most commonly used heating system adjustment method, which refers to the adjustment method that keeps the water supply flow of the heating system unchanged, and ensures the heating demand by changing th...

AI Technical Summary

Problems solved by technology

However, due to the thermal inertia of the building envelope, the effect of the outdoor temperature on the room temperature shows attenuation and delay characteristics, that is, the room temperature does not show a linear change with the outside temperature

The lack of a reasonable reflection of the attenuation and delay characteristics of the external temperature will lead to deviations in the estimation of the indoor temperature, and it is impossible to make reasonable compensation for the external temperature change.

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