Investigation of control characteristics in multi-user building heating system based on demand-side adjustment. (25th January 2023)

• Record Type: Journal Article
• Authors: Wang, Ruixin; Cong, Mingyang; Zhou, Zhigang; Wei, Cun; Ni, Long; Liu, Jing; Chen, Jian
• Is Part Of: Applied thermal engineering. Volume 219(2022)Part B
• Publication Date: 2023-01-25
• Subjects: Multi-user building -- Demand-side adjustment -- Hydrothermal coupled -- Multi-level control -- Adjustment characteristics; Heat engineering -- Periodicals; Heating -- Equipment and supplies -- Periodicals; Periodicals; 621.40205
• DOI: 10.1016/j.applthermaleng.2022.119534
• Languages: English
• ISSNs: 1359-4311

Abstract

Highlights: Demand-side regulation method for multi-user building heating systems. A multi-stage regulation model for hydrothermal coupling is established. Control mode has a negligible effect on the adjustment of multi-user building heating systems. The response time of radiant floor heating system is more than 4 h. The response time of radiator heating system is less than 30 min. Abstract: Multi-user heating buildings based on demand-side adjustment have substantial potential in terms of energy savings and heat efficiency. The former heating system is generally controlled by considering the heating building as a whole. However, the original adjustment method is difficult to apply when there are several independent heat demand users in the building. In this background, this study established a hydrothermal coupled multi-level control model of a multi-user building heating system according to the actual situation of a multi-user heating building. In addition, it investigated the adjustment characteristics between user and building to effectively control the system. The results showed that the adjustment mode has a negligible effect on the room temperature and energy consumption for radiant floor heating systems and radiator heating systems. The control period had a large influence on the adjustment of the multi-user building heating system. The response time of the radiant floor heating system was over 4 h and that of the radiator system was less than 30 min. When the average indoor temperature reduced by 1 ℃, the energy-savings rate of the radiant floor heating system increased by 8.6 %, and that of the radiator heating system increased by 6.7 %. This study provides a basis for formulating and implementing control strategies in multi-user building heating systems.