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Dynamic Thermal Performance and Controllability of Fan Coil Systems

Arghand, Taha ; Trüschel, Anders ; Dalenbäck, Jan-Olof and Javed, Saqib LU (2018) Cold Climate HVAC 2018 In Springer Proceedings in Energy p.351-361
Abstract
In order to characterize and control a system properly, it is inevitably necessary to understand and define the interactions between various design parameters and the controllability of the system. This study experimentally investigates effects of three design parameters, including supply water temperature, fan speed, and room heat load, on the dynamic response of a fan coil system. The experiments have been performed in a mock-up of an office room equipped with a fan coil unit (FCU). A direct ground cooling system has been used to supply the FCU with high-temperature chilled water ranging between 15 and 23 °C. The dynamic response of the system to step changes in the design parameters has been studied using room operative temperature as... (More)
In order to characterize and control a system properly, it is inevitably necessary to understand and define the interactions between various design parameters and the controllability of the system. This study experimentally investigates effects of three design parameters, including supply water temperature, fan speed, and room heat load, on the dynamic response of a fan coil system. The experiments have been performed in a mock-up of an office room equipped with a fan coil unit (FCU). A direct ground cooling system has been used to supply the FCU with high-temperature chilled water ranging between 15 and 23 °C. The dynamic response of the system to step changes in the design parameters has been studied using room operative temperature as an indicator. The results of this study indicate that the system behaves as a first-order system without a time delay. The results also suggest that the time constant and the characteristic of the dynamic response of the fan coil system are not affected by the initial room temperature. Among the design parameters, fan speed is observed to have the most significant effect on the dynamic response of the system. Supply water temperature and room heat load are both found to have insignificant effects on the dynamic response characteristics of the system. (Less)
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author
; ; and
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Controllability, Fan coil unit, Dynamic response
host publication
Cold Climate HVAC 2018 : Sustainable Buildings in Cold Climates - Sustainable Buildings in Cold Climates
series title
Springer Proceedings in Energy
editor
Johansson, Dennis ; Bagge, Hans and Wahlström, Åsa
pages
351 - 361
publisher
Springer
conference name
Cold Climate HVAC 2018
conference location
Kiruna, Sweden
conference dates
2018-03-12 - 2018-03-15
ISSN
2352-2542
2352-2534
ISBN
978-3-030-00661-7
978-3-030-00662-4
DOI
10.1007/978-3-030-00662-4_30
language
English
LU publication?
no
id
beede88a-f7e1-4e7c-ab2a-1119d94e82da
date added to LUP
2019-05-15 22:10:55
date last changed
2019-05-17 11:47:03
@inproceedings{beede88a-f7e1-4e7c-ab2a-1119d94e82da,
  abstract     = {In order to characterize and control a system properly, it is inevitably necessary to understand and define the interactions between various design parameters and the controllability of the system. This study experimentally investigates effects of three design parameters, including supply water temperature, fan speed, and room heat load, on the dynamic response of a fan coil system. The experiments have been performed in a mock-up of an office room equipped with a fan coil unit (FCU). A direct ground cooling system has been used to supply the FCU with high-temperature chilled water ranging between 15 and 23 °C. The dynamic response of the system to step changes in the design parameters has been studied using room operative temperature as an indicator. The results of this study indicate that the system behaves as a first-order system without a time delay. The results also suggest that the time constant and the characteristic of the dynamic response of the fan coil system are not affected by the initial room temperature. Among the design parameters, fan speed is observed to have the most significant effect on the dynamic response of the system. Supply water temperature and room heat load are both found to have insignificant effects on the dynamic response characteristics of the system.},
  author       = {Arghand, Taha and Trüschel, Anders and Dalenbäck, Jan-Olof and Javed, Saqib},
  booktitle    = {Cold Climate HVAC 2018 : Sustainable Buildings in Cold Climates},
  editor       = {Johansson, Dennis and Bagge, Hans and Wahlström, Åsa},
  isbn         = {978-3-030-00661-7},
  issn         = {2352-2542},
  language     = {eng},
  month        = {12},
  pages        = {351--361},
  publisher    = {Springer},
  series       = {Springer Proceedings in Energy},
  title        = {Dynamic Thermal Performance and Controllability of Fan Coil Systems},
  url          = {http://dx.doi.org/10.1007/978-3-030-00662-4_30},
  doi          = {10.1007/978-3-030-00662-4_30},
  year         = {2018},
}