Co-Heating method for thermal performance evaluation of closed refrigerated display cabinets
Journal article, 2021

In this study, an application of the adapted Co-Heating methodology for thermal performance evaluation of closed refrigerated display cabinets (RDCs) has been presented. A novel test series comprising three experiments has been developed and demonstrated on a commercial RDC with four doors to evaluate the envelope heat transfer coefficient, thermal inertia, infiltration at idle state and dynamic infiltration caused by door operations. The latter two experiments were conducted in parallel with the condensate collection method for validation of the results for infiltration. It was concluded with good (<10%) conformance between the methods that the infiltration at idle state for the tested RDC is approximately 0.022kg/s and that one 15s door opening causes approximately 0.94kg of ambient indoor air to infiltrate. Additionally, the time, equipment and associated costs for running the tests were compared, and it was concluded that the adapted Co-Heating methodology could substitute the condensate collection method for the evaluation of infiltration while providing additional results on the thermal performance.

Co-Heating

Refrigerated display cabinet

Thermal performance

Condensate

Experiment

Author

Tommie Månsson

Chalmers, Architecture and Civil Engineering, Building Technology

Angela Sasic Kalagasidis

Chalmers, Architecture and Civil Engineering, Building Technology

York Ostermeyer

Chalmers, Architecture and Civil Engineering, Building Technology

International Journal of Refrigeration

0140-7007 (ISSN)

Vol. 121 51-60

Subject Categories

Energy Engineering

Other Civil Engineering

Building Technologies

DOI

10.1016/j.ijrefrig.2020.10.011

More information

Latest update

1/13/2021