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Artur Rusowicz, Andrzej Grzebielec, Adam Rucinski
Energy conservation in buildings using refrigeration units
| Conference Information: |
9th International Conference on Environmental
Engineering, MAY 22-24, 2014 Vilnius, LITHUANIA |
| Source: |
ICEE-2011 - International Conference on Environmental
Engineering |
| Book Series: |
International Conference on Environmental Engineering
(ICEE) Selected papers |
| ISSN: |
ISSN 2029-7092 online |
| ISBN: |
978-609-457-640-9 / 978-609-457-690-4 CD |
| Year: |
2014 |
| Publisher: |
Vilnius Gediminas Technical University Press Technika |
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Abstract
The present paper shows the use of refrigeration units in a 12-building complex with a view to reduce power and heat consumption.
Public utility buildings with a total usable area of 55,425.9 m2 are considered. Cooling power of the installed cooling system is 1188 kW.
Free cooling was proposed to be used in the cooling system, as cool sources are operational for the whole year without interruptions. With
refrigeration units up and running, refrigerant superheat recovery was also proposed for hot water preparation. Next, chillers were
replaced by more energy-efficient devices. Technologies and costs involved in the proposed modification, and payback time are also
presented. A summary of the resulting power and cost savings for proposed variants is included.
Keywords: refrigeration unit; free cooling; superheat; energy efficiency; energy conservation.
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