The Temperature Control Methods for the Heat Supply System of Buildings and Structures

Abstract

AbstractTesting and controlling algorithms for the temperature conditions in the heat supply systems of buildings and structures provide necessary information and support the control of the flows of the working medium (liquid, gas) in the heat load. This approach allows to monitor the distribution of heat flows in real time. The purpose of controlling this process is to create a mathematical model to determine the time interval for restarting the heat flow control algorithm in the heat supply system with a dependent connection to the heat source, on the basis of which a discretization interval of the heat supply system state probing time should be obtained. This approach is accompanied by appropriate microprocessor support according to the “smart home” scheme. The task was set to use the differential heat balance equation to achieve the aforementioned goal. It is expected to use the dependencies of the functioning of the heating system in stationary and quasi-stationary modes, taking into account transient processes in the event of start, shutdown or emergency stoppage. The methods of mathematical analysis are used to obtain the desired relation. In addition, the solution to this problem is accompanied by a graphical illustration in the Mathcad software environment. An important part of this article is a relatively simple schematic and technical implementation of the obtained solution. As a part of the study of the heat supply process for buildings and structures, a study of the differential equation of the heat balance of the dependent heat supply system of buildings and structures was performed. A working formula for the discrete interval for controlling the parameters of the specified heating system was obtained. The discretization interval of the heat supply time was obtained, which is supported by the real time schematic solution. As a result of the study, the main elements of diagnostics of the heat supply system were obtained: the diagnostic interval, the discretization interval, the control scheme, which allows monitoring in real time according to the «smart building» principle.KeywordsDependent heat supply systemHeat balance equationHeat carrier temperatureThe diagnostic intervalThe discretization intervalSmart home