Mathematical Modeling of a Combined Heat Source with a Solar Collector for a Hot Water System
Abstract: The research of leading scientists was analyzed to determine a rational methodology for constructing models for changing the load of hot water supply systems during the day for various types of heat energy consumers, in particular for consumers of residential and public buildings. A schematic diagram of hot water supply with a combined heat source based on a solar collector is proposed. To study the flow distribution in the proposed scheme, the contour flow method (MCR) was used – an analog of the known contour current method for calculating linear electric circuits in combination with the Newton method for solving a system of nonlinear algebraic equations. Based on the proposed scheme, an org-graph was developed for a flow distribution scheme indicating the direction of their movement, sections and nodes. A mathematical model of the flow distribution of contour flows in the proposed DHW circuit with a combined heat source is developed, which allows determining the degree of opening and regulation limits of balancing and controlling valves in different operating modes of the solar collector. Operating the results of mathematical modeling of the proposed scheme makes it possible to economically use coolant, obtain more comfortable microclimate parameters in the serviced rooms, and also reduce the response time of the system to the regulation of a particular parameter.
Keywords: hot water supply, combined heat source, solar collector, flow distribution, contour flow method, microclimate.
Pages: 58-66.
For citation: Dolgov, N. V.; Vybornov, D. V.; Udovichenko, Z. V. Mathematical Modeling of a Combined Heat Source with a Solar Collector for a Hot Water System. – Text : electronic. – In: Proceeding of the Donbas National Academy of Civil Engineering and Architecture. – 2019. – Issue 2019-5(139) Engineering systems and technogenic safety. – Р. 58-66. – URL: https://donnasa.ru/publish_house/journals/vestnik/2019/2019-5(139)/st_09_dolgov_vybornov_udovichenko.pdf (date of access: 19.11.2024). – ISSN 2519-2817.
Issue 2019-5 (139)
Journal: Proceeding of the Donbas National Academy of Civil Engineering and Architecture
Publish house: Donbas National Academy of Civil Engineering and Architecture
Journal: Proceeding of the Donbas National Academy of Civil Engineering and Architecture
Publish house: Donbas National Academy of Civil Engineering and Architecture