Blomberg P., Mundt E., Malmström T.G.
Bibliographic info:
ASHRAE 2004 Annual Meeting, Nashville June 2004, pp 1-9, 8 Fig., 3 Tab., 19 Ref.

Detailed measurements of the thermal characteristics of one one-row and one four-row ducted, hydronic air heating coil have been performed. The measurements were made in a carefully designed and produced laboratory setup, capable of creating almost perfect step changes of both water flow rate and supply temperature. The heaters steady-state characteristics were first modeled. The model was then calibrated with a set of measurements by means of parameter estimation. Then a couple of dynamic models, based on the calibrated steadystate models, were tested. Both the calibrations and the behavior of the dynamic models are discussed. It is shown that if the base has careful calibration of the steady-state characteristics, simple uncalibrated dynamic models can be used.
The measurement files are available on CD for anyone interested in testing heater simulation models.