Energy performance analysis of the temperature control system of an object with a random principle of thermal perturbations

Abstract

Abstract The application of simulation modeling to the development of a temperature control system for an object with a random nature of thermal loads is considered. The object under study is a facility with enclosing structures made of fiberglass, inside of which there is heat-generating equipment. Thermostatic control of the object is carried out by a fully recirculating ventilation system that provides even blowing of the inner walls of the object with fresh air. To create a simulation model that is closest to real conditions, based on statistical meteorological data for the city of St. Petersburg, a model of meteorological conditions was created, suggesting every three hours the following parameters: ambient temperature, wind speed, solar radiation intensity, cloudiness. Heat generating equipment located inside the serviced facility does not operate continuously. The turning-on of this equipment occurs at random, the duration of work and the amount of heat dissipation also vary. To take into account this circumstance, the specified parameters are selected by the program in accordance with the Simpson distribution. The article presents graphs of changes in temperature and energy characteristics of the system for the three cold and three warm days of the considered annual period of the system operation. Conclusions are drawn about the feasibility of using the simulation method in the design and development of such systems, on the possible increase in their energy efficiency, as well as on the reduction of capital and operating costs.