.png){kind=icon}
返回
Performance of the variable-temperature multi-cold source district cooling system: A case study
.png){kind=icon}
PRE
AI
DOI：10.1016/j.applthermaleng.2022.118722.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
At present, the energy consumption and CO2 emissions of traditional building cooling systems account for a large proportion of the whole society. In this context, the district cooling system (DCS) has become an emerging green cooling solution due to its efficient and clean characteristics. However, there are many factors that affect the performance of DCS, and the changing outdoor temperature has a significant impact on the cooling load of users, and it is a challenge to set an appropriate and reasonable DCS cooling temperature operation strategy to cope with the changing outdoor temperature. This study proposed a novel operating strategy for variable-temperature cooling. An existing multi-cold source DCS operating at a constant temperature in an area with hot summer and warm winter was considered as the baseline case. Moreover, the cooling temperature of the chillers with different functions in the system was reset according to the change in the outdoor temperature, and the variable-temperature cooling model was established using the transient system simulation program (TRNSYS). Subse-quently, set reasonable operating strategies for chillers and the auxiliary devices of the two models and per -formed the simulations. The results revealed that both models could meet the cooling load demand of users. Compared with the baseline model, the newly proposed variable-temperature cooling model reduced 18.99% of energy consumption and 19.12% of CO2 emissions, and the annual cost savings was 2.29 million RMB. Additionally, the overall efficiency of the new model increased by 15.52%.
Keyword:
District cooling system
Variable temperature
Control strategy
TRNSYS
期刊
IF:
6.9
论文数:
2.8W
被引数:
10.6W
机构
引用论文
Optimal chiller loading in a district cooling system with thermal energy storage具有热能存储的区域冷却系统中的最佳冷水机组负荷.png)
ENERGY
ENERGYIF9.4
PREAI
分享收藏Analysis of district cooling system with chilled water thermal storage in hot summer and cold winter area of ChinaBUILDING SIMULATION
BUILDING SIMULATIONIF5.9
PREAI
分享收藏Data analytics and optimization of an ice-based energy storage system for commercial buildingsAPPLIED ENERGY
OAAI
APPLIED ENERGYIF11
OAAI分享收藏Analysis of operational data from a district cooling system and its connected buildingsENERGY
ENERGYIF9.4
PREAI
分享收藏Study of operation strategies for integrating ice-storage district cooling systems into power dispatch for large-scale hydropower utilizationAPPLIED ENERGY
APPLIED ENERGYIF11
PREAI
分享收藏District cooling systems in Iranian energy matrix, a techno-economic analysis of a reliable solution for a serious challenge伊朗能源矩阵中的区域冷却系统，对严峻挑战的可靠解决方案的技术经济分析ENERGY
ENERGYIF9.4
PREAI
分享收藏
查看更多内容