MODELING OF A NEW STRUCTURE OF PRECISION AIR CONDITIONING SYSTEM USING SECONDARY CONDENSER FOR RH REGULATION
| Main Authors: | Aries Subiantoro; Electrical Engineering Department, Faculty of Engineering University of Indonesia, Depok 16424, Indonesia, Nasruddin .; Mechanical Engineering Department, Faculty of Engineering University of Indonesia, Depok 16424, Indonesia, Feri Yusivar; Electrical Engineering Department, Faculty of Engineering University of Indonesia, Depok 16424, Indonesia, Muhammad Idrus Al-Hamid; Mechanical Engineering Department, Faculty of Engineering University of Indonesia, Depok 16424, Indonesia, Bagio Budiardjo; Electrical Engineering Department, Faculty of Engineering University of Indonesia, Depok 16424, Indonesia |
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| Format: | Article application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Directorate of Research and Community Engagement, Universitas Indonesia
, 2012
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| Online Access: |
http://journal.ui.ac.id/index.php/technology/article/view/1287 |
Daftar Isi:
- 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.Keywords: modeling, multivariable model, precision air conditioning, vapour-compression cycle