| Title |
Surface Temperature Control of an Insulated Horizontal Pipe under Thermal Radiation Environment |
| Authors |
강병하(Byung Ha Kang) ; 피창헌(Chang Hun Pi) ; 김석현(Sukhyun Kim) |
| Keywords |
단열재 두께 ; 표면온도 제어 ; 수평관 ; 표면복사 ; 복사열 전달계수 Insulation thickness ; Surface temperature control ; Horizontal pipe ; Surface radiation ; Radiation Coefficient |
| Abstract |
Procedures for estimation of insulation thickness for a horizontal pipe for condensation control or personnel protection has been investigated, parallel to the previous work of a vertical wall case. Parameters include pipe diameter, emissivity, thermal conductivity, and operating temperatures. The results indicated that the surface emissivity plays a very important role in the design of insulation, specially for the case of high temperature application with low Bi. The effect of surface radiation in such case could be up to 65% of the total. Required insulation thickness for the surface temperature control increases as pipe diameter increases and as surface emissivity decreases. Adequate revision of specifications or standards to include newly invented insulation materials with high emissivity has been also suggested. |