Author(s)

B. Pavković

Abstract

This paper presents trends in the application of numerical models for analysis and development of new refrigeration systems and equipment. The application of empirical, theoretical and fundamental principle algorithms and models is discussed. Features of steady-state, quasi steady-state and transient models are analysed and examples are presented. Application of system simulation programs and design programs is discussed. Keywords: models, algorithms, numerical simulation, refrigeration. 1 Introduction Number of papers dealing with numerical modelling and simulation has been increasing during past two decades due to increased computer power which makes possible faster calculations within reasonably acceptable time. In order to get the information on the present state of activities in modelling and simulation of refrigeration equipment, the search was performed for keywords \“numerical, modelling and simulation” in a Fridoc database of International Institute of Refrigeration (IIR). Fridoc contains over 75.000 references concerning articles and books on all refrigeration application sectors published since 1982 and data are derived from all international literature in these fields (journals, conference proceedings, books, etc.) [1]. Results of search have shown that more than 5400 items had been published till 2005. Distribution of total number of papers in Fridoc database for last 15 years is presented in Fig. 1, and it is compared with increase of CPU power related to the state in 1989 evaluated according to data taken from literature [2]. It is obvious that the huge increase of numerical modelling and simulation of refrigerating

Keywords

models, algorithms, numerical simulation, refrigeration.