THERMAL MODELING OF AIR-CONDITIONED PROTOTYPE ROOM USING MATLAB-SIMULINK

摘要

The paper reports the design and development of simplified thermal model of a prototype room and air-conditioner in Matlab-Simulink environment. For establishment of model, the physical properties of room and air-conditioner have taken into account. The heat transfer among the prototype room has modeled using energy conservation equations. While the vapor compression based air conditioner has modeled using transfer function which is derived experimentally. The total system model so developed has simulated for different compressor speeds, different outside temperatures as well as for different wall materials. The results obtained offer the information pertaining to heat extraction by the air conditioner as well as heat gain through the walls. It also explores the temperature variation within the room for different scenarios. Thus the designed model is helpful in estimating the size of an air-conditioner. It further helps to design a control system as well. The developed model has verified experimentally. It is observed that simulated result and experimental result are in good agreement.