A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Generic load regulation strategy for enhancing energy efficiency of chiller plants
In many chiller plants, high coefficient of performance (COP) is only achieved at a few favorable part load ratios (PLRs), while the COP is low at many other non-favorable PLRs. To address this issue, this study proposes a generic load regulation strategy that aims to maintain chiller plants operating at high COP, particularly under non-favorable PLRs. This is achieved by incorporating thermal energy storage (TES) units and timely optimizing the charging and discharging power of the integrated TES units. The optimal charging and discharging power is determined by solving a dynamic optimization problem, taking into account the performance constraints of the TES units and the chiller plants. To provide an overview of the energy-saving potential of the proposed strategy, a comprehensive analysis was conducted, considering factors such as building load profiles, COP/PLR curves of chillers, and attributes of the TES units. The analysis revealed that the proposed load regulation strategy has the potential to achieve energy savings ranging from 5.7% to 10.8% for chiller plants with poor COPs under unfavorable PLRs, particularly in buildings with significant load variations.
Generic load regulation strategy for enhancing energy efficiency of chiller plants
In many chiller plants, high coefficient of performance (COP) is only achieved at a few favorable part load ratios (PLRs), while the COP is low at many other non-favorable PLRs. To address this issue, this study proposes a generic load regulation strategy that aims to maintain chiller plants operating at high COP, particularly under non-favorable PLRs. This is achieved by incorporating thermal energy storage (TES) units and timely optimizing the charging and discharging power of the integrated TES units. The optimal charging and discharging power is determined by solving a dynamic optimization problem, taking into account the performance constraints of the TES units and the chiller plants. To provide an overview of the energy-saving potential of the proposed strategy, a comprehensive analysis was conducted, considering factors such as building load profiles, COP/PLR curves of chillers, and attributes of the TES units. The analysis revealed that the proposed load regulation strategy has the potential to achieve energy savings ranging from 5.7% to 10.8% for chiller plants with poor COPs under unfavorable PLRs, particularly in buildings with significant load variations.
Generic load regulation strategy for enhancing energy efficiency of chiller plants
Build. Simul.
Wan, Hang (author) / Gong, Yuyang (author) / Wang, Shengwei (author) / Sun, Yongjun (author) / Xu, Tao (author) / Huang, Gongsheng (author)
Building Simulation ; 17 ; 1273-1287
2024-08-01
15 pages
Article (Journal)
Electronic Resource
English
Generic load regulation strategy for enhancing energy efficiency of chiller plants
| Springer Verlag | 2024
Part load efficiency of air-cooled multiple-chiller plants
| British Library Online Contents | 2002
British Library Online Contents | 1994
Strategy for designing more energy efficient chiller plants serving air-conditioned buildings
| Online Contents | 2007