Preface - kmutt

KMUTT Annual Research Abstracts 2005
The analytical results agree well with the
experimental results in the case that the ratio of
the water flow rate. It was found that the
generally the water flow rate in the tube
increased the thermal efficiency. For example,
the increase in the thermal efficiency for
turbulent flow was about 10 % when the inlet
water temperature was same ambient air
temperature. And laminar flow, larger increase
of the thermal efficiency, as much about 20 %,
war obtained. The effect of the water flow rate
and initial temperature on the CPC solar
collector efficiency was also discussed.
IC-164 THERMAL AND HEAT TRANSFER
CHARACTERISTICS OF A PCM STORAGE
SYSTEM
Taveewat Suparos, Boonsong Hemwat,
Chamnan Ratsame
International Conference on Recent Advances in
Mechanical and Material Engineering
(ICRAMME'05), May 30-31, 2005, Kuala
Lumpur, Malaysia, p. 26
The thermal and heat transfer
characteristics of paraffin (PCM) during the
melting and solidification processes were
determined experimentally in a vertical
cylindrical thermal and energy storage system.
The inlet temperature, the flow rate of water
uses as the heat transfer fluid. The heat transfer
coefficients obtained between the PCM and the
cylindrical tank are larger than the calculated
values based on the theory of steady-state heat
conduction due to the dendritical crystal growth
of PCM (using Lumped Technique). The
experimental results proved that the PCM melts
and solidifies congruently also indicated that the
everage heat transfer coefficient and the heat
flow rate to the storage tank could have effect
system performance.
IC-165 INVESTIGATION OF THE THERMAL
EFFICIENCIES OF A SOLAR DRYER
OPERATED BY SUN-TRACKING PARABOLIC
TROUGH COLLECTORS
Taveewat Suparos, Boonsong Hemwat,
Chamnan Ratsame
International Conference on Recent Advances in
Mechanical and Material Engineering
(ICRAMME'05), May 30-31, 2005, Kuala
Lumpur, Malaysia, p. 68
131
This paper deals with the construction
and performance of a solar powered drying
system consisting of two parabolic through
collectors (PTC) and a drying chamber. The
thermal efficiency of both the solar water heater
or PTC and the drying system as a function of
typical physical parameter and the experimental
results for difference fruit and vegetable
products at different water flow rate are
discussed. The results of this study indicate that
the present process drying system has thermal
efficiency between 0.4 and 0.85 drying
experiments and that the higher water flow rates
increase the overall drying performance and
thermal efficiency.
IC-166 THE CONSTRUCTION A COMPUTER
ASSISTED INSTRUCTION PACKAGE ON
MULTIMEDIA TECHNOLOGY
Paiboon Kiattikomol, Sakesun Yampinij
The 19 th International Conference, “Learning
Organization in a Learning World” (ICLORD
2005), April 18-22, 2005, King Mongkut’s
University of Technology Thonburi, Bangkok,
Thailand, pp. 420-425
The purposes of the research were to
construct a Computer Assisted Instruction (CAI)
package on multimedia Technology and to
evaluate efficiency, satisfaction and learning
achievement, and users' satisfaction.
The research tools were 1) a Computer
Assisted Instruction Package on Multimedia
Technology; and 2) an achievement test. The
research sample consisted of 32 students who
were studying in the School of Industrial
Education, King Mongkut's University of
Technology Thonburi.
The research results revealed that
the efficiency of the Computer-Assisted
Instruction was 85.03/82.65, which was higher
than criteria set 80/80. The analysis of pretest
and posttest scores for learning achievement
found that the effectiveness after the process
(E post ) = 82.65 was higher than the achievement
before study (E pre ) = 31.92 .The results could be
concluded that "A Computer Assisted
Instruction Package on Multimedia Technology"
was able to learning effectiveness of students =
50.73. As a result, the CAI package on
Multimedia Technology could be need for self
learning. The mean of satisfaction of the sample
group was in good level = 4.16.
International Conference