%0 Journal Article
%T MODELING OF A NEW STRUCTURE OF PRECISION AIR CONDITIONING SYSTEM USING SECONDARY CONDENSER FOR RH REGULATION
%A Aries Subiantoro
%A Nasruddin
%A Feri Yusivar
%A Muhammad Idrus Al-Hamid
%J Makara Seri Teknologi
%D 2012
%I Universitas Indonesia
%X A dynamic mathematical model for a new structure of precision air conditioning (PAC) has been developed. The proposed PAC uses an additional secondary condenser for relative humidity regulation compared to a basic refrigeration system. The work mechanism for this system and a vapour-compression cycle process of the system are illustrated using psychrometric chart and pressure-enthalpy diagram. A non-linear system model is derived based on the conservation of mass and energy balance principles and then linearized at steady state operating point for developing a 8th-order state space model suited for multivariable controller design. The quality of linearized model is analyzed in terms of transient response, controllability, observability, and interaction between input-output variables. The developed model is verified through simulation showing its ability for imitating the nonlinear behavior and the interaction of input-output variables.
%K modeling
%K multivariable model
%K precision air conditioning
%K vapour-compression cycle
%U http://journal.ui.ac.id/index.php/technology/article/viewFile/1287/1183