Abstract:
Thesis research was to develop and analyze the perfonnance of a saving energy steaming cabinet.
The cabinet has a dimension of 31 cm in width and 55 cm in height. Its wall is made of 0.1 cm-thick
aluminuam laminated with insulations of three types and thicknesses. The insulations are fiber glass,
rock wool, and ceramic fiber, each of which has thicknesses of 1.5 cm, 2.5 cm, and 5 cm. To
compare the cabinet perfonnance with the nonnal pot based on a I-dimensional heat transfer, the
experiments with conditions of opened and closed cover are conducted by boiling water of 5 L
using LPG at a constant rate of 0.71 Lih. The results of experiment reveal that the cabinet laminated
with 5 cm-thick fiber glass gains heat loss of 51.66 watt whereas the heat loss of the nonnal pot is
116.55 watt. The difference in heat loss is approximately two times. Considering how economic is
the cabinet is, with 8,000 baht investment and saving cost of 10,372 per year, the cabinet saves the
cost of LPG used at the rate of 34.15 baht per day, in which case the break even point would be
reach in 0.642 year.