Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Performance assessment in district cooling networks using distributed cold storages : A case study
District cooling is a technology that has been gaining traction lately due to increased demand from the commercial and industrial sectors, especially in dense urban areas such as Stockholm. A literature study found that customers such as hospitals, offices, malls and data centres all depend on both comfort cooling and process cooling. District cooling networks operate by producing centralized cooling energy and distributing it to consumers through underground pipes. The produced cold therein is transferred via the district cooling network as chilled water, which is pumped through the heat exchangers located in the consumer facilities which enables maintaining the desired temperatures of the consumers’ intended facilities, by removing the additional heat. The literature review showed that cold storages, which are thermal energy storages, are used to peak shave and to help reduce the output of expensive chillers and heat pumps during peak demand hours. The aim of this project is to evaluate the possibilities of using distributed cold storages in district cooling network as a means to reduce effects of distribution limitations the bottlenecks and increase distribution capacity. This project defines distribution limitations as areas with specifically low differential pressures. Additionally, the objective is to compare the costs between the scenarios. In this project, Norrenergi AB’s district cooling network is used as a case study. Norrenergi AB is an energy company located in Solna that supplies district heating and cooling to customers, mainly in the Solna and Sundbyberg region. The company delivers roughly 1 000 GWh of district heating and 70 GWh of district cooling annually. Three scenarios with various configurations of storage size and location are developed and calculated in the network simulation software NetSim, which is a software that allows complex, dynamic simulations of energy networks. According to Norrenergi AB, the criteria for acceptable network operation is that the differential pressure is ...
Performance assessment in district cooling networks using distributed cold storages : A case study
District cooling is a technology that has been gaining traction lately due to increased demand from the commercial and industrial sectors, especially in dense urban areas such as Stockholm. A literature study found that customers such as hospitals, offices, malls and data centres all depend on both comfort cooling and process cooling. District cooling networks operate by producing centralized cooling energy and distributing it to consumers through underground pipes. The produced cold therein is transferred via the district cooling network as chilled water, which is pumped through the heat exchangers located in the consumer facilities which enables maintaining the desired temperatures of the consumers’ intended facilities, by removing the additional heat. The literature review showed that cold storages, which are thermal energy storages, are used to peak shave and to help reduce the output of expensive chillers and heat pumps during peak demand hours. The aim of this project is to evaluate the possibilities of using distributed cold storages in district cooling network as a means to reduce effects of distribution limitations the bottlenecks and increase distribution capacity. This project defines distribution limitations as areas with specifically low differential pressures. Additionally, the objective is to compare the costs between the scenarios. In this project, Norrenergi AB’s district cooling network is used as a case study. Norrenergi AB is an energy company located in Solna that supplies district heating and cooling to customers, mainly in the Solna and Sundbyberg region. The company delivers roughly 1 000 GWh of district heating and 70 GWh of district cooling annually. Three scenarios with various configurations of storage size and location are developed and calculated in the network simulation software NetSim, which is a software that allows complex, dynamic simulations of energy networks. According to Norrenergi AB, the criteria for acceptable network operation is that the differential pressure is ...
Performance assessment in district cooling networks using distributed cold storages : A case study
Bilek, Zinar (Autor:in)
01.01.2020
Hochschulschrift
Elektronische Ressource
Englisch
| BASE | 2021
Integration of Decentralized Thermal Storages Within District Heating (DH) Networks
| DOAJ | 2016
Integration of Decentralized Thermal Storages Within District Heating (DH) Networks
| Online Contents | 2016
Performance prediction of daily cold storages for building climatization
| British Library Conference Proceedings | 1994