Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
A stochastic load demand-oriented synergetic optimal control strategy for variable-speed pumps in residential district heating or cooling systems
Highlights A new SLD-oriented synergetic optimal control strategy for VSPs was proposed. A synergetic optimization mathematical model of VSPs was developed. The PSO algorithm was introduced to solve the synergetic optimization problem. The actual energy consumption of VSPs was reduced significantly by this strategy.
Abstract For a residential district heating or cooling (RDHC) system in the “part-time part-space (PTPS)” service mode, the thermal load demands of end users are notably stochastic.To reducing the energy consumption of centralized variable-speed pumps (VSPs) in RDHC systems, this study presents a stochastic load demand-oriented synergetic optimal control strategy for VSPs in RDHC systems. In this strategy, the spatial and temporal distribution of the stochastic load demands (SLDs) in a residential district is predicted using the stochastic occupant behavior (SOB) method. The operation regulation of the RDHC system is mathematically described based on graph theory. A synergetic optimization mathematical model is developed based on each end user’s SLD as well as the operation regulation characteristics of the RDHC system. This synergetic optimization mathematical model is subsequently solved using particle swarm optimization (PSO) algorithm. Thus, an optimal hourly pump frequency ratio is obtained. A case study is performed to comprehensively compare the proposed synergetic optimal control (SOC) strategy with the conventional constant pressure difference control (CPDC) strategy. The results show that for the same load demands, the energy consumption of the pumps throughout the heating season under the SOC strategy is 62.9% lower than that under the CPDC strategy.
A stochastic load demand-oriented synergetic optimal control strategy for variable-speed pumps in residential district heating or cooling systems
Highlights A new SLD-oriented synergetic optimal control strategy for VSPs was proposed. A synergetic optimization mathematical model of VSPs was developed. The PSO algorithm was introduced to solve the synergetic optimization problem. The actual energy consumption of VSPs was reduced significantly by this strategy.
Abstract For a residential district heating or cooling (RDHC) system in the “part-time part-space (PTPS)” service mode, the thermal load demands of end users are notably stochastic.To reducing the energy consumption of centralized variable-speed pumps (VSPs) in RDHC systems, this study presents a stochastic load demand-oriented synergetic optimal control strategy for VSPs in RDHC systems. In this strategy, the spatial and temporal distribution of the stochastic load demands (SLDs) in a residential district is predicted using the stochastic occupant behavior (SOB) method. The operation regulation of the RDHC system is mathematically described based on graph theory. A synergetic optimization mathematical model is developed based on each end user’s SLD as well as the operation regulation characteristics of the RDHC system. This synergetic optimization mathematical model is subsequently solved using particle swarm optimization (PSO) algorithm. Thus, an optimal hourly pump frequency ratio is obtained. A case study is performed to comprehensively compare the proposed synergetic optimal control (SOC) strategy with the conventional constant pressure difference control (CPDC) strategy. The results show that for the same load demands, the energy consumption of the pumps throughout the heating season under the SOC strategy is 62.9% lower than that under the CPDC strategy.
A stochastic load demand-oriented synergetic optimal control strategy for variable-speed pumps in residential district heating or cooling systems
Wang, Yu (Autor:in) / Wang, Zhiwei (Autor:in) / Wang, Zhanwei (Autor:in)
Energy and Buildings ; 238
22.02.2021
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Application of District Heating and Cooling in High-Rise Residential District
| British Library Conference Proceedings | 1997