|
1.�떎�뿕紐⑹쟻
怨좎껜�몴硫댁뿉�꽌 蹂듭궗�뿴 �쟾�떖�뿉 �쓽�븳 �뿴�쟾�떖�웾怨� �몴硫� �삩�룄瑜� 痢≪젙�븯�뿬 �몴硫댁쓽 諛⑹궗�쑉�쓣 痢≪젙�븳�떎.
2.諛곌꼍�씠濡�
�몺 Stefan-Boltxmann Law for Blackbody :
q`` = �� Ts4
q`` = Emissivity Power from Surface [W/m2]
�� = 5.67 횞 10-8 [W/m2K4]
Ts = 蹂듭궗泥� �몴硫댁쓽 �젅����삩�룄 [K]
�몼 �떎�젣�쓽 �몴硫�(�쉶泥� : grey surface)�뿉�꽌 �뿴蹂듭궗�쑉
q`` = 琯�� Ts4
琯 = emissivity (諛⑹궗�쑉) (�쓳泥대뒗 1, �쉶泥대뒗 1�씠�븯�엫)
�몾 蹂듭궗泥� �몴硫닿낵 二쇱쐞�쓽 �떒�쐞 �떆媛꾨떦, �떒�쐞 硫댁쟻�떦 net 蹂듭궗 �뿴援먰솚�쑉�쓽 痢≪젙
q``net = 琯�� (Ts4 - Ta4)
q`` = 5.59 횞 reading from radiometer (R)
Ta = 二쇰���쓽 �젅��� �삩�룄 (蹂� �떎�뿕�뿉�꽌�뒗 ���湲곗쓽 �삩�룄) [K]
3.�떎�뿕諛⑸쾿
INVERSE SQUARE LAW FOR RADIATION HEAT TRANSFER
�몺 Power Control Unit�쓽 異쒕젰�쓣 6V濡� 怨좎젙�떆�궓�떎.
�몼 嫄곕━(X)瑜� 100mm濡쒕���꽣 600mm源뚯�� 100mm�떒�쐞濡� 利앷���떆耳� 媛�硫댁꽌 �젙�긽�긽�깭�뿉�꽌�쓽 蹂듭궗�웾�쓣 湲곕줉�븳�떎.
�몾 �떒�쐞硫댁쟻�떦 蹂듭궗�뿴�웾�쓣 怨꾩궛�븳�떎.
EMISSIVITY (琯)
�몺 Heat Source�븵�뿉�꽌遺��꽣 110mm�쓽 �쐞移섏뿉 Silver Metal Plate�쓣 �몦�떎.
�몼 Power Control Unit�쓽 異쒕젰�쓣 6V, 5V濡� 諛붽퓭媛�硫� Silver Metal Plate�쓽 �몴硫댁삩�룄��� Radiometer�쓽 �닔移섎�� 湲곕줉�븳�떎.
�몾 EMISSIVITY (琯)�쓣 怨꾩궛.
3.�떎�뿕 �뜲�씠�꽣
Test No.
1
2
3
4
5
6
嫄� 由� (mm)
100
200
300
400
500
600
蹂� �궗 �웾 (W/m2)
1562
588
259
133
68
35
q``net (W/m2)
8731.58
3286.���(�깮�왂)
|
�뒗 �븯����쑝�굹 援됱옣�엳 留롮�� �떆媛꾩쓣 �븘�슂濡� �븯�뒗 �떎�뿕�씠�뿀怨� 以묎컙 以묎컙 �뜲�씠�꽣 媛믪씠 �옄二� 蹂��빐�꽌 醫뗭�� 寃곌낵瑜� �뼸湲� 源뚯���뒗 �돺吏� �븡�븯�떎. �궡媛� 留≪�� �떎�뿕�씠�땲留뚰겮 �꽦�쓽瑜� 媛�吏�怨� �떎�뿕�뿉 �엫�뻼怨� 蹂듭궗�뿴�쟾�떖�뿉 ����븳 �씠濡좎쟻 吏��떇�쓣 �떎�뿕�쓣 �넻�빐 �솗�떎�븯寃� �씠�빐�븷 �닔 �엳�뒗 醫뗭�� 湲고쉶媛� �맂 寃� 媛숈븘�꽌 �쓽誘� �엳�뒗 �떎�뿕�씠�뿀�뜕 寃� 媛숇떎.
인 쇄
바로가기
湲곌퀎怨듯븰 �쓳�슜�떎�뿕 - 蹂듭궗 �뿴�쟾�떖 �떎�뿕.hwp
[Size :
45 Kbyte
]
장바구니
