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Main Title: New absorption chiller and control strategy for the solar assisted cooling system at the german federal enviroment agency
Author(s): Albers, Jan
Type: Book Part
Language: English
Language Code: en
Abstract: Typically the cooling capacity of absorption chillers is controlled by adjusting the driving hot water temperature according to the load. Meanwhile the cooling water temperature is controlled to a constant set value. In order to increase the solar cooling fraction and/or to decrease the operating costs of solar assisted cooling systems (SAC-systems) a new control strategy has been developed which controls hot and cooling water temperature simultaneously. Hereby the specific cost of cold – generated from solar or conventional heat – can be reduced. The basic concept of the strategy is explained and first results are shown for the SAC-system at the German Federal Environment Agency in Dessau. Here a recently developed absorption chiller is now used instead of a former adsorption chiller. With the new absorption chiller and the control strategy a seasonal energy efficiency ratio SEER above 0.75 is achieved. In addition the replacement of the adsorption chiller results in a 35% higher electric efficiency and a reduction of about 70% of the costs for spray water consumption in the reject heat device.
URI: urn:nbn:de:kobv:83-opus4-61941
Issue Date: 2013
Date Available: 16-Jan-2015
DDC Class: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
Subject(s): absorption chiller
adsorption chiller
cold price
control strategy
heat pump
thermally driven
Book Title: Thermally driven heat pumps for heating and cooling
Publisher: Universitätsverlag der TU Berlin
Publisher Place: Berlin
Page Start: 127
Page End: 138
Notes: Part of: Thermally driven heat pumps for heating and cooling. – Ed.: Annett Kühn – Berlin: Universitätsverlag der TU Berlin, 2013 ISBN 978-3-7983-2686-6 (print) ISBN 978-3-7983-2596-8 (online) urn:nbn:de:kobv:83-opus4-39458 []
Appears in Collections:Zentrale & sonstige Einrichtungen » Publications

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