Heat Load Characteristics And Heat Supply Accessibility Of Central Heating System

In northern my country where the urbanization is relatively perfect,central heating is used in winter heating.Compared with other forms of heating,central heating is also more energy-efficient.With the gradual deepening of research on central heating system related issues,my country’s heating system Energy consumption is gradually decreasing,but it is still an important part of my country’s total energy consumption.At present,the actual heating effect of the central heating system does not meet the needs of people while saving energy.There are still many cases of over and under heating,which greatly increases energy consumption.The heating of the heating system is calculated based on the building load,and the accuracy of the load determines the heating quality.The research content of this paper is as follows:First of all,taking Xi’an as a representative city in the cold region,select six types of buildings,residential buildings,school buildings,office buildings,hospital buildings,shopping malls,and hotel buildings,as typical buildings,and set the building thermal parameters and indoor thermal parameters according to the corresponding specifications.Disturbance parameters,Dest software was used to analyze the dynamic heat load of 6 types of buildings throughout the year,and it was found that the hotel buildings had the best energy efficiency.Secondly,based on the simulation results of a single building,the superposition method is used to obtain the thermal load characteristics of the building group.Using orthogonal experimental design method,the area of 6 types of buildings is set to three different levels,18 types of building groups are fitted,and the heat load characteristics of typical building groups are studied.Third,we have studied the heat load characteristics of different building groups in the central heating system above.The adjustment of the central heating system is an inevitable step in the heating process.If the heating system can meet the regulation of the maximum fluctuating load,then Meet the adjustment requirements of various buildings.Finally,study the impact of the time lag and availability of heating on the heating system.Due to the different geographical locations,the system water supply cannot be delivered to the user at the adjusted temperature.The user receives the delayed water supply temperature,and the return water However,the temperature is sent by the user terminal,which can ensure the adjustment of the return water temperature,and study the influence of this problem on the heating regulation.Studying the characteristics of the dynamic heat load of different types of buildings is a prerequisite guarantee for the operation and adjustment of the heating system.It aims to achieve a "balance of supply and demand" and at the same time ensure that the hydraulic conditions of the pipe network are relatively stable.It saves energy and also meets the needs of users.Need heat to improve the quality of production and life.