22 May 2008

MODELING AND TESTING OF ROOM AIR CONDITIONERS IN HEATING AND COOLING MODES


This paper presents some simulation models and testing methods applicable to
reversible room air conditionners. The first part of the paper describes the reference
(“mother”) model. This model is an assembly of real and/or fictitious physical processes. It
needs some tuning, in order to fit with the behavior of a given component. The tuning is
made with help of manufacturer information and/or of test results. The second part of the
paper presents the test method, some test results and reference model validation. The
testing method described here is based on a double energy balance: one on refrigerant side
and one on air side. The third part of the paper presents a simplified (“daughter”) model,
reduced to a set of polynomial expressions, easy to use and to integrate into a global
building simulation software.