Calculation method of heat consumption for buildings life support systems

21st International Scientific Conference on Advanced in Civil Engineering "Construction - The Formation of Living Environment"

土木建筑工程

Prokhorov, V.I.^1

Heating and Ventilation Department, Moscow State University of Civil Engineering (MGSU), National Research University, 26, Yaroslavskoye Shosse, Moscow, Russia^1

关键词: Calculation formula;    Engineering systems;    Heat characteristics;    Heat transfer surfaces;    Mechanical ventilation;    Specific capacities;    Specific energy consumption;    Specific heat consumption;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/365/2/022023/pdf
DOI  :  10.1088/1757-899X/365/2/022023

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

The methodology used for calculating annual values of heat consumption four life supporting systems of buildings: heating, mechanical ventilation; air-conditioning and hot water system. It has become an actual issue. Currently, the last two engineering systems in the regulations either not considered at all or are divided on various departmental standards and different from each other. This leads to the fragmentation and incorrect reporting of information at different levels. Therefore, it was necessary to create a uniform technique of calculation of heat consumption for all four systems in the classic concepts which developed by previous generations of researchers. The classic concept of specific heat characteristics of the building, shows specific capacity of the heating system, the author applied to three other life-supporting systems that consume heat power. The result formed a logical chain of calculation formulas. In the suggested method first of all it determines annual unit costs of heat energy for each of these systems. This procedure uses «specific heat characteristics of the building.» This and other values apply to 1 m3 of building volume of the building to the volume counted according to his measurements from the outside heat-transfer surfaces. Also, it introduced the average ratio of the daily load of the system. Because of the fact that the value of specific consumption of heat in this systems in the suggested method has the property of additivity, it is possible to correctly identify a single specific indicator of heat for all life-supporting systems of the building. The final step is the determination of the absolute total heat consumption for the four systems for this building for a year. This is done by simply multiplying the specific heat consumption of the building volume to the outside measurement. Moreover, the same result can be obtained as the sum of the individual systems and by finding and applying the combined specific energy consumption for the building in general. The advantage of the obtained results consists in a universal method to the calculation of heat consumption of the various life support systems which emanating from the development of the classical method V. M. Chaplin's modern construction. It is recommended to use these results in the academic and design practice and as a theoretical base in developing standards. Besides, it will allow us to find reserves for energy saving and the sequence of their implementation. The method is also open to development, so it can be complement in a similar way with the values of new building systems. For example, a central dust cleaning systems.