Prediction for Energy Loads of Air Conditioning System

Modeling and Control of Air Conditioning Loads for Consuming Distributed Energy Sources

Abstract: This paper aims to tap the potential of air conditioning loads (ACLs) for consuming photovoltaic power (PV) and wind power (WP). By fully considering different thermal comfort of different users, an ACL twice-clustered model based on different ACL parameters and users tolerance values (UTV) is built. Then, a two-stage ACL control method based on both temperature control (TC) and switc...

Energy Saving System for Air Conditioning of Clean Room for Semiconductor Factory (Estimation of FMU System)

The total power consumption of all semiconductor plants exceeds 100 million kWh per year, with about 43% of this consumption to operate air conditioning facilities. This high power consumption is due to the requirement of the cleanliness kept for clean rooms, with extremely high power consumed to the air transferring power. Oki developed the fan module unit (FMU) type air conditioning system to...

Fully Fresh Air Air-conditioning System Equipped with Double Heat Pipe Based Heat Recovery Technology

The using of double heat pipe based heat exchanger (HPHX) in a conventional fully fresh air air-conditioning (AC) system was examined in the present study. The fabricated HPHXs were tested under the actual conditions and the measured data were used to study the performance of the existing AC system (System A) and AC system equipped with the double HPHX (System B) for a yearly operation through ...

A new procedure for performance prediction of air conditioning coils

A new numerical model has been developed for the simulation of pate-fin-tube type of cooling and dehumidifying coils widely used in the air conditioning industry. The model discretizes the coil into nodes along the coolant path and carries out repetitive marches from the coolant inlet to its outlet while simultaneously updating the values of the air stream properties for obtaining quick converg...

Air-Conditioning PID Control System with Adjustable Reset to Offset Thermal Loads Upsets