Stability Performance Dilemma in Hydronic Radiators with TRV

Fatemeh Tahersima, Jakob Stoustrup, Henrik Rasmussen

Publikation: Bidrag til tidsskriftKonferenceartikel i tidsskriftForskningpeer review

6 Citationer (Scopus)
630 Downloads (Pure)

Resumé

Thermostatic Radiator Valves (TRV) have proved their significant contribution in energy savings for several years. However, at low heat demands, an unstable oscillatory behavior is usually observed and well known for these devices. It happens due to the nonlinear dynamics of the radiator itself which results in a high gain and a large time constant for the radiator at low flows. If the TRV is tuned in order to dampen the oscillations at low heat loads, it will suffer from poor performance and lack of comfort, i.e. late settling, when full heating capacity is needed. Based on the newly designed TRVs, which are capable of accurate flow control, this paper investigates achievable control enhancements by incorporating a gain schedulling control scheme applied to TRVs. A suitable linear parameter varying model is derived for the radiator which governs the gain scheduler. The results are verified by computer simulations
OriginalsprogEngelsk
TidsskriftI E E E Conference on Control Applications. Proceedings
ISSN1085-1992
DOI
StatusUdgivet - 2011
BegivenhedIEEE International Conference on Control Applications (CCA 2011) - Denver, Colorado, USA
Varighed: 28 sep. 201130 sep. 2011

Konference

KonferenceIEEE International Conference on Control Applications (CCA 2011)
LandUSA
ByDenver, Colorado
Periode28/09/201130/09/2011

Fingerprint

Radiators
Gain control
Thermal load
Flow control
Energy conservation
Heating
Computer simulation

Citer dette

@inproceedings{64f1d232c07746b6bff4dc96ac1d3d9f,
title = "Stability Performance Dilemma in Hydronic Radiators with TRV",
abstract = "Thermostatic Radiator Valves (TRV) have proved their significant contribution in energy savings for several years. However, at low heat demands, an unstable oscillatory behavior is usually observed and well known for these devices. It happens due to the nonlinear dynamics of the radiator itself which results in a high gain and a large time constant for the radiator at low flows. If the TRV is tuned in order to dampen the oscillations at low heat loads, it will suffer from poor performance and lack of comfort, i.e. late settling, when full heating capacity is needed. Based on the newly designed TRVs, which are capable of accurate flow control, this paper investigates achievable control enhancements by incorporating a gain schedulling control scheme applied to TRVs. A suitable linear parameter varying model is derived for the radiator which governs the gain scheduler. The results are verified by computer simulations",
author = "Fatemeh Tahersima and Jakob Stoustrup and Henrik Rasmussen",
year = "2011",
doi = "10.1109/CCA.2011.6044404",
language = "English",
journal = "I E E E International Conference on Control Applications. Proceedings",
issn = "1085-1992",
publisher = "IEEE",

}

Stability Performance Dilemma in Hydronic Radiators with TRV. / Tahersima, Fatemeh; Stoustrup, Jakob; Rasmussen, Henrik.

I: I E E E Conference on Control Applications. Proceedings, 2011.

Publikation: Bidrag til tidsskriftKonferenceartikel i tidsskriftForskningpeer review

TY - GEN

T1 - Stability Performance Dilemma in Hydronic Radiators with TRV

AU - Tahersima, Fatemeh

AU - Stoustrup, Jakob

AU - Rasmussen, Henrik

PY - 2011

Y1 - 2011

N2 - Thermostatic Radiator Valves (TRV) have proved their significant contribution in energy savings for several years. However, at low heat demands, an unstable oscillatory behavior is usually observed and well known for these devices. It happens due to the nonlinear dynamics of the radiator itself which results in a high gain and a large time constant for the radiator at low flows. If the TRV is tuned in order to dampen the oscillations at low heat loads, it will suffer from poor performance and lack of comfort, i.e. late settling, when full heating capacity is needed. Based on the newly designed TRVs, which are capable of accurate flow control, this paper investigates achievable control enhancements by incorporating a gain schedulling control scheme applied to TRVs. A suitable linear parameter varying model is derived for the radiator which governs the gain scheduler. The results are verified by computer simulations

AB - Thermostatic Radiator Valves (TRV) have proved their significant contribution in energy savings for several years. However, at low heat demands, an unstable oscillatory behavior is usually observed and well known for these devices. It happens due to the nonlinear dynamics of the radiator itself which results in a high gain and a large time constant for the radiator at low flows. If the TRV is tuned in order to dampen the oscillations at low heat loads, it will suffer from poor performance and lack of comfort, i.e. late settling, when full heating capacity is needed. Based on the newly designed TRVs, which are capable of accurate flow control, this paper investigates achievable control enhancements by incorporating a gain schedulling control scheme applied to TRVs. A suitable linear parameter varying model is derived for the radiator which governs the gain scheduler. The results are verified by computer simulations

U2 - 10.1109/CCA.2011.6044404

DO - 10.1109/CCA.2011.6044404

M3 - Conference article in Journal

JO - I E E E International Conference on Control Applications. Proceedings

JF - I E E E International Conference on Control Applications. Proceedings

SN - 1085-1992

ER -