Analysis of possibilities to utilize excess heat of supermarkets as heat source for district heating | Zendy

Benjamin Zühlsdorf | Zendy; A. Riis Christiansen | Zendy; Fridolin Müller Holm | Zendy; T Funder-Kristensen | Zendy; Brian Elmegaard | Zendy

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Analysis of possibilities to utilize excess heat of supermarkets as heat source for district heating

Author(s) -

Benjamin Zühlsdorf,

A. Riis Christiansen,

Fridolin Müller Holm,

T Funder-Kristensen,

Brian Elmegaard

Publication year - 2018

Publication title -

energy procedia

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.474

H-Index - 81

ISSN - 1876-6102

DOI - 10.1016/j.egypro.2018.08.192

Subject(s) - cascade , heat pump , excess heat , refrigeration , hybrid heat , environmental science , heat pump and refrigeration cycle , air source heat pumps , renewable heat , investment (military) , coefficient of performance , nuclear engineering , thermodynamics , waste management , materials science , process engineering , mechanical engineering , engineering , heat exchanger , chemical engineering , physics , politics , political science , law

The paper analyses the possibilities to recover excess heat from CO 2 supermarket refrigeration plants for supply to district heating networks. It was analyzed to operate the refrigeration system at an increased gascooler pressure to directly supply heat and to install a cascade heat pump to recover the heat from lower temperatures. Increasing the gascooler pressure appeared promising during summer, while the cascade heat pump showed higher COPs during colder periods. The investment for the cascade heat pump could be compensated within 4 years at district heating prices above 37 €/MWh.

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