중온형 원통다관형 수증기 개질기의 부분단열 및 반경방향 분배 구조의 영향
Partial Insulation and Heating Tubes Configuration of Shell and Tube Steam Reformer at Medium Temperature
Steam reformer(수증기 개질기), Shell and tube type(원통다관형), Partial insulation(부분 단열), Medium temperature heat source(중온열원), External air heat transfer(외기 열전달)
DAIN PARK1, SANGSEOK YU2,†
Conventional high temperature reformers are not suitable for hybrid
fuel cell systems that use waste heat as a heat source. So, development of a low
temperature type reformer is needed. However, the analysis was conducted in
two ways to increase the thermal efficiency, because of low reforming rate due
to the low heat source. First, it is a way to ger thermal gain from the outside
through partial insulation. In the case of one heat source tube and several heat
source tubes, we analyzed the effect of partial heat insulation in some cases.
Second, we found the most efficient arrangement of the heat source tubes by
changing the location of the heat source tubes. The interpretation was carred out
using the COMSOL Mutiphysics program.