.BuildSysPro.Systems.HVAC.Emission.Radiator.HotWaterRadiator

Information

Hypothesis and equations

Hot water radiator taking into account inertias of water filling and radiator body. Room heating needs and radiator control have to be modelled apart from this model as it does not include any control.

The radiator is discretized in horizontal slices with uniform temperature (water + metal). This discretization is detailed in document "Type 13 Radiateur" [EDF2000].

The model is based on dissipated power calculation from French standard with a power law [NF-047]. According to this standard, radiator parameters are standardized to a rated power for which the gap between mean radiator temperature and mean air temperature is 50°K.

Bibliography

Detailed modelling in note : H-E14-2011-01955-FR

[NF-047] NF / AERAULIQUE ET THERMIQUES - Radiateurs, convecteurs et panneaux rayonnants de plafonds - Annexe n°9

[EDF2000] Type 13, Radiateur, Document interne EDF sur la modélisation d'un radiateur à eau, corrigé par M. Raguin

Instructions for use

Setting of inertia is simplified thanks to a list of correlations by radiator type (cast iron, aluminium, steel) from manufactures data.

Known limits / Use precautions

For specific studies needing accuracy, it is possible to develop a pre-processor in order to determine the best value for the corrective coefficient CoeffCorrectif.

In further modelling, if the radiative dissipation become sensitive in comparison with conductive dissipation, it would be good to refine FracRad parameter in order to make it dependent on radiator temperature.

Validations

Validated model - Hubert Blervaque, Sila Filfli 07/2011

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Licensed by EDF under a 3-clause BSD-license
Copyright © EDF 2009 - 2023
BuildSysPro version 3.6.0
Author : Hubert BLERVAQUE, Sila FILFLI, EDF (2011)
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