Urban heating system virtual stand under data incomplete conditions

The problem of heat load optimal regulation in a boiler house considered to provide heat carrier to end users, taking into account the permissible temperature deviations according to the temperature schedule, is relevant for a heat supplying organization. Regulation in a boiler house that feeds a heating network with unknown thermophysical characteristics is a problem that belongs to the class of poorly formalized problems. This is due, not least, to the specific features of heating system exploitation. The problem relatively easily solved at different ambient temperatures and at different times in the data completeness case on the above specific features. Unfortunately, collecting such information is almost impossible. We have to pose and solve the problem under conditions of uncertainty. Therefore, decided to develop an urban heating system virtual stand under data incomplete conditions, which will allow creating a heating system models with various conditions of heat loss, with heat consumers of different categories and different heat energy consumption. It will allow to simulate a changes made without making factual changes in an urban heating system structure.
The object of the study is a closed urban heating system with a complex topology, and the subject is calculation models of a heating system, which allow determining the temperature loss of the coolant in the sections of the heating system based on data processing from general house metering devices (GHMD).
The aim of the work is to improve the efficiency of an urban heating system management based on data obtained using a virtual stand. A conceptual model developed and the main functionality of the virtual stand implemented. Based on a number of numerical experiments carried out, an algorithm formulated and implemented within the framework of a virtual stand, which makes it possible to determine total thermal resistances values at each section of the heating system from GHMD data. The stand tested on the urban heating system of the Lysva city. The deviation of the temperature values calculated within the framework of the model implemented in the virtual stand from the temperatures obtained from the GHMD did not exceed 5%. Consequently, this virtual stand can used for more efficient urban heating system management, taking into account the calculation error.