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Efficient and integrated energy systems for supermarkets

Abstract

A new greenfield supermarket installation has been built in Trondheim Norway. The shop opened in August
2013 and is one of the most energy effective grocery stores in Northern Europe. The key to the energy
savings are:
• the active use of daylight which reduces the demand of artificial light;
• novel technologies applied in the ventilation system, adapted for the use in supermarkets
• new generation of R744 booster refrigeration unit,
• multi temperature level energy storage,
• smart handling of the heat exchange between these systems and
• tuning of the overall control strategy.
The subsystems are described in detail including their role during different operation scenarios which occur
during the year. The entire system is well equipped with measurement devices for all sub systems, which
allow a detailed analysis of the consequences when comparing various control strategies.
The paper describes the design of the integrated sub systems and presents the first measurement results. A 30%
energy saving was obtained during the first 6 month of operation, compared to similar supermarket in the
same location.

Category

Academic chapter/article/Conference paper

Client

  • Research Council of Norway (RCN) / 195182

Language

English

Author(s)

  • Armin Hafner
  • Camilla Claussen
  • F. Schmidt
  • R. Olsson
  • K. Fredslund
  • P.A. Eriksen
  • K.B. Madsen

Affiliation

  • Unknown
  • Diverse norske bedrifter og organisasjoner
  • SINTEF Energy Research

Year

2014

Publisher

International Institute of Refrigeration

Book

Proceedings of the 11th IIR-Gustav Lorentzen Conference on Natural Refrigerants GL2014

Issue

2014-3

ISBN

978-2-36215-004-3

View this publication at Cristin