일사량과 경사각에 따른 응축특성에 관한 연구

Abstract

To develope the water purifying system using the economical solar thermal energy, the box with the tilted angle of 15o, 30o, 45o, 60o and same basic area was made. The condensation characteristics with the influences of solar radiation and tilted angle of boxes were experiments and analysis. They were concluded as follows :

1) The condensation characteristics with the inner temperature The heat equilibrium that upper temperature and lower temperature is equal by way of solar radiation and outer temperature is equal to the October. and March. At pm 1:00 the inner temperature was the highest. After whenever heat equilibrium the increasing rate of amount of condensation was high, after 2 hours of heat equilibrium the amount of condensation was the largest.

2) The condensation characteristics with the solar radiation From may to September more solar energy and higher temperature, the amount of condensation water was apt to depend upon outer temperature, and express as follows : 『 CW30 = 0.0625 x SR + 324.44 』 3) The condensation characteristics with the outer temperature From April to October the amount of condensation water was influenced by the outer temperature because of the differences between the inner temperature and outer and express as follows : 『 CW30 = 50.992 x OT + 366.92 』

4) The condensation characteristics with the tilted angle The optimum tilted angle with the solar radiation is supposed to be 22° from April to October and the maximum amount of condensation water was measured to be 3,088 ml/m2∙d at tilted angle of 15°.

5) The condensation characteristics with the season On spring(from March to May) and autumn(from September to November), the amount of condensation water was depend upon the outer temperature than the solar radiation, and summer(from June to August) solar radiation than outer temperature.

6) Required bottom collector area For the producing of 2,000 ml/d required bottom collector area was 1.207 m2 at tilted angle of 22o.

7) The equation for the calculating the amount of condensation water The equation for the calculating the amount of condensation water can be expressed as 『 CW = 62.2662 + 168.766 x AE - 5.423 x AE2 + 0.0476 x AE3 』