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ISSN 2029-7092 online
ISBN 978-609-457-690-4 CD
ISBN 978-609-457-640-9
Energy for Buildings

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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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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