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The impact of a DCV-system on the IAQ, energy use, and moisture safety in apartments - a case study

Abdul Hamid, Akram LU orcid ; Johansson, Dennis LU ; Wahlström, Åsa LU and Fransson, Victor LU (2022) In International Journal of Ventilation 21(1). p.35-52
Abstract

A novel DCV-system controls the air-change rate for each apartment in multifamily buildings based on two indoor air parameters: 1) the moisture load (supply), and 2) volatile organic compounds. With a central fan, but decentralized control boxes placed outside each apartment, the system controls the air-change rate for each apartment. This paper’s main aim is to determine the potential of this DCV-system, through a case study, to: 1) achieve good IAQ, 2) handle the moisture loads appropriately, and 3) achieve good energy efficiency in multifamily buildings. Furthermore, the paper aims to assess the possibility to achieve good IAQ by validating the DCV-system’s VOC-controls through measurements of CO2 in apartments. Field... (More)

A novel DCV-system controls the air-change rate for each apartment in multifamily buildings based on two indoor air parameters: 1) the moisture load (supply), and 2) volatile organic compounds. With a central fan, but decentralized control boxes placed outside each apartment, the system controls the air-change rate for each apartment. This paper’s main aim is to determine the potential of this DCV-system, through a case study, to: 1) achieve good IAQ, 2) handle the moisture loads appropriately, and 3) achieve good energy efficiency in multifamily buildings. Furthermore, the paper aims to assess the possibility to achieve good IAQ by validating the DCV-system’s VOC-controls through measurements of CO2 in apartments. Field measurements show that the system responds appropriately to apartment-specific loads, and that acceptable emission and moisture loads are achieved in most apartments in the case study. The impact that the system has on the energy use was assessed through calculations based on the field measurements. The calculations show that the DCV-system saves energy used for heating the supply-air by 86% in comparison to a mechanically balanced ventilation system without heat recovery, and 22% in comparison to the same system but with heat recovery.

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Please use this url to cite or link to this publication:
author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Demand control, energy, indoor air quality, moisture, ventilation, volatile organic compounds
in
International Journal of Ventilation
volume
21
issue
1
pages
35 - 52
publisher
Taylor & Francis
external identifiers
  • scopus:85090449014
ISSN
1473-3315
DOI
10.1080/14733315.2020.1818375
language
English
LU publication?
yes
id
c2296b3e-e1e4-4bb5-8f75-33f5759cc43e
date added to LUP
2020-10-02 15:05:47
date last changed
2022-06-29 11:15:45
@article{c2296b3e-e1e4-4bb5-8f75-33f5759cc43e,
  abstract     = {{<p>A novel DCV-system controls the air-change rate for each apartment in multifamily buildings based on two indoor air parameters: 1) the moisture load (supply), and 2) volatile organic compounds. With a central fan, but decentralized control boxes placed outside each apartment, the system controls the air-change rate for each apartment. This paper’s main aim is to determine the potential of this DCV-system, through a case study, to: 1) achieve good IAQ, 2) handle the moisture loads appropriately, and 3) achieve good energy efficiency in multifamily buildings. Furthermore, the paper aims to assess the possibility to achieve good IAQ by validating the DCV-system’s VOC-controls through measurements of CO<sub>2</sub> in apartments. Field measurements show that the system responds appropriately to apartment-specific loads, and that acceptable emission and moisture loads are achieved in most apartments in the case study. The impact that the system has on the energy use was assessed through calculations based on the field measurements. The calculations show that the DCV-system saves energy used for heating the supply-air by 86% in comparison to a mechanically balanced ventilation system without heat recovery, and 22% in comparison to the same system but with heat recovery.</p>}},
  author       = {{Abdul Hamid, Akram and Johansson, Dennis and Wahlström, Åsa and Fransson, Victor}},
  issn         = {{1473-3315}},
  keywords     = {{Demand control; energy; indoor air quality; moisture; ventilation; volatile organic compounds}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{35--52}},
  publisher    = {{Taylor & Francis}},
  series       = {{International Journal of Ventilation}},
  title        = {{The impact of a DCV-system on the IAQ, energy use, and moisture safety in apartments - a case study}},
  url          = {{http://dx.doi.org/10.1080/14733315.2020.1818375}},
  doi          = {{10.1080/14733315.2020.1818375}},
  volume       = {{21}},
  year         = {{2022}},
}