Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Heat Export from Supermarkets : Refrigeration Systems Field Measurements and a Techno-economic Analysis
Supermarkets have a high energy demand where almost half of the energy is used within the refrigeration system. The refrigeration system utilises a cycle where heat is taken and rejected. The rejected heat could be recovered and utilised for other purposes, such as covering internal heating demand or be exported to other facilities. Implementation of heat recovery could create business opportunities between the supermarket and other actors involved. The aim of this thesis was to investigate the potential for heat export from the refrigeration system insupermarkets to neighbours. Case studies were conducted on three different supermarkets in Sweden. This project evaluated field measurements for the current heat recovery within the systems, investigated heat recovery during optimal operation conditions as well as a techno-economic analysis of the heatrecovery system. All three supermarkets within the study recovered heat in the current configuration. In both CG Ytterby and CG Eskilstuna, the recovered heat covered the majority of the internal heating demand. Nevertheless, there was a great potential to recover more heat, since most of the heat was rejected through the gas cooler. The system was also limited by the discharge pressure and the return temperature in the heat recovery unit. The techno-economic analyses indicated that all supermarkets had the potential to cover both internal heating demand with the recovered heat, as well as produce excess to export. It was observed to be more profitable to disconnect from the DHN and become self-sufficient. Heat export from supermarkets would create new innovative business models which can be profitable for both the supermarket and the heat consumer. To produce excess heat, the system had to operate at optimal conditions, increasing electricity usage and hence associated operational costs. This demonstrated the importance of revenues to make it an economically feasible solution. ; Livsmedelsbutiker har ett högt energibehov där nästan hälften av energin används i ...
Heat Export from Supermarkets : Refrigeration Systems Field Measurements and a Techno-economic Analysis
Supermarkets have a high energy demand where almost half of the energy is used within the refrigeration system. The refrigeration system utilises a cycle where heat is taken and rejected. The rejected heat could be recovered and utilised for other purposes, such as covering internal heating demand or be exported to other facilities. Implementation of heat recovery could create business opportunities between the supermarket and other actors involved. The aim of this thesis was to investigate the potential for heat export from the refrigeration system insupermarkets to neighbours. Case studies were conducted on three different supermarkets in Sweden. This project evaluated field measurements for the current heat recovery within the systems, investigated heat recovery during optimal operation conditions as well as a techno-economic analysis of the heatrecovery system. All three supermarkets within the study recovered heat in the current configuration. In both CG Ytterby and CG Eskilstuna, the recovered heat covered the majority of the internal heating demand. Nevertheless, there was a great potential to recover more heat, since most of the heat was rejected through the gas cooler. The system was also limited by the discharge pressure and the return temperature in the heat recovery unit. The techno-economic analyses indicated that all supermarkets had the potential to cover both internal heating demand with the recovered heat, as well as produce excess to export. It was observed to be more profitable to disconnect from the DHN and become self-sufficient. Heat export from supermarkets would create new innovative business models which can be profitable for both the supermarket and the heat consumer. To produce excess heat, the system had to operate at optimal conditions, increasing electricity usage and hence associated operational costs. This demonstrated the importance of revenues to make it an economically feasible solution. ; Livsmedelsbutiker har ett högt energibehov där nästan hälften av energin används i ...
Heat Export from Supermarkets : Refrigeration Systems Field Measurements and a Techno-economic Analysis
Almebäck, Julia Linnea Hildur (Autor:in) / Magnius, Rebecka (Autor:in)
01.01.2022
Hochschulschrift
Elektronische Ressource
Englisch
DDC:
690
Carbon dioxide refrigeration with heat recovery for supermarkets
| Oxford University Press | 2014
Technical file - CO2 refrigeration in supermarkets
Online Contents | 2007
Analysis of Advanced, Low-Charge Refrigeration for Supermarkets
| British Library Conference Proceedings | 2003
Analysis of Advanced, Low-Charge Refrigeration for Supermarkets
| British Library Online Contents | 2003
A techno-economic study of energy efficiency technologies for supermarkets in South Africa
| BASE | 2012