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Primary energy used in centralized and decentralized ventilation systems measured in field tests in residential buildings
Merzkirch, Alexander; Maas, Stefan; Scholzen, Frank et al.
2015In Proceedings of the 26th AIVC Conference, Effective Ventilation in high performance buildings
Peer reviewed
 

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Keywords :
Primary Energy; Residential Ventilation; Decentralized
Abstract :
[en] Ventilation systems can save heat energy by using heat recovery, but consume electrical energy to power the fans. In practice, the energy efficiency of those systems can be lower than expected, when compared to the nominal values provided by the manufacturer. In this paper, results of a comprehensive field tests with 20 centralized and 60 decentralized ventilation systems for residential buildings and the calculation of the primary energy savings of those devices are presented. Factors like volume flow unbalances, shortcuts, temperature change rates and specific fan power have been addressed by tracer gas technology and other means and been used as input factors to calculate the primary energy balance of those devices. Every system showed positive primary energy savings. The mean value for centralized systems was 2.92 Wh/m3 with a high standard deviation of 2.23 Wh/m3, while the decentralized systems showed higher savings of around 4.75 Wh/m3 with a standard deviation of 0.01 to 0.15 Wh/m3. In general, the calculated savings in field tests were significantly lower compared to the case of using nominal values as input parameters.
Research center :
Université du Luxembourg
Disciplines :
Engineering, computing & technology: Multidisciplinary, general & others
Author, co-author :
Merzkirch, Alexander ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Maas, Stefan ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Scholzen, Frank ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Waldmann, Danièle ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
External co-authors :
no
Language :
English
Title :
Primary energy used in centralized and decentralized ventilation systems measured in field tests in residential buildings
Publication date :
September 2015
Event name :
36th AVIC Confer., 5th Tightvent Conf., 3rd. Venticool Conf., Effective ventilation in high performance buildings
Event date :
23-09-2015 to 24-09-2015
Main work title :
Proceedings of the 26th AIVC Conference, Effective Ventilation in high performance buildings
ISBN/EAN :
2-930471-45-x
Pages :
197-203
Peer reviewed :
Peer reviewed
Name of the research project :
R-AGR-0068-1 > EEVS > 01/01/2013 - 31/12/2028 > MAAS Stefan
Funders :
FNR - Fonds National de la Recherche [LU]
Available on ORBilu :
since 30 October 2015

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