09-02-2013, 03:23 PM
An Experimental Study on Clothes Drying Using Waste Heat from Split Type Air Conditioner
An Experimental Study .pptx (Size: 2.97 MB / Downloads: 115)
introduction
What is Drying process?
When the material, which has moisture inside, is contacted to the hot air, the heat transfer will occur at the surface of the material. The temperature of the material will be increased and the moisture inside the material will evaporate to the surrounding.
The process of drying is related to the mass transfer from moisture inside the material to the surrounding.
Drying will be completed when the temperature is in equilibrium with surrounding.
DRYING THEORETICAL CONSIDERATION
The process of drying is related to the mass transfer from moisture inside the material to the surrounding.
A typical drying curve, where the drying rate (kg/s) is plotted against moisture content.
Reduction of moisture in the material will be divided in 3 periods as shown as a typical drying curve:
Initial heating stage.
Constant drying rate period.
Falling rate drying period.
Clothes Drying with Auxiliary Fan Unit
The 120 watts of fan unit with vary speed control was used in the experiment.
The air flow rate at the exit of drying chamber was controlled.
From collecting the experimental data, the drying rate from the experiment was examined.
Maximum drying rate of 2.26 kg/h, which was close to that of theoretical (2.38 kg/h).
The results were shown that the suitable number of clothes in this chamber was eight pieces.
CONCLUSION
Effective in residential areas.
Reasonably short drying duration.
High energy efficiency during air conditioning seasons.
The drying rate of clothes drying using waste heat from air conditioner is between 1.1-2.26 kg/h.
Better than that of clothes drying with commercial dryer And natural indoor drying.