7.2. Experimental validation
The commercial thermoelectric module TEC1-12706 type and
the resistance wire silicon rubber heater TY-SRH were tightly
clamped between the upper frame and the circulating water reservoir.
The silicon rubber heater glued to the module using epoxy
the data acquisition multimeter, ‘‘K’’ type thermocouples were
used to measure the temperatures of heat sink, the hot and cold
surfaces of the thermoelectric module, the heater and the ambient.
The Circulating water used for heat sink had a maximum flow
rate of 8.3 L min_1 and a maximum head of 0.8 m. The study used
two different sample sizes of silicon rubber heaters. The first sample
covered the whole upper surface of the thermoelectric module
as seen from Fig. 9a which has the same size with the thermoelectric
module, 40 mm by 40 mm and delivers uniform temperature
distribution. As seen from Fig. 9b, the second sample size was
15 mm by 40 mm and covered and heat up some part of the upper
surface of the thermoelectric module. When the experiment performed,
we used the insulating material (i.e. asbestos) to cover
the surroundings of the heater and the uncovered parts of the
module.
In the experiment, the parameters for the two cases were the
same only the coverage of the heater. When we performed the
experiment, we connected an external electrical load of 1.5 X.
Fig. 10 shows the experimental results on the effect of temperature
non-uniformity over the heat spreader. As seen from the figure, if
we keep the temperature distribution uniform over the hot surface
of the thermoelectric module, we can get better output.
7.2. Experimental validationThe commercial thermoelectric module TEC1-12706 type andthe resistance wire silicon rubber heater TY-SRH were tightlyclamped between the upper frame and the circulating water reservoir.The silicon rubber heater glued to the module using epoxy the data acquisition multimeter, ‘‘K’’ type thermocouples wereused to measure the temperatures of heat sink, the hot and coldsurfaces of the thermoelectric module, the heater and the ambient.The Circulating water used for heat sink had a maximum flowrate of 8.3 L min_1 and a maximum head of 0.8 m. The study usedtwo different sample sizes of silicon rubber heaters. The first samplecovered the whole upper surface of the thermoelectric moduleas seen from Fig. 9a which has the same size with the thermoelectricmodule, 40 mm by 40 mm and delivers uniform temperaturedistribution. As seen from Fig. 9b, the second sample size was15 mm by 40 mm and covered and heat up some part of the uppersurface of the thermoelectric module. When the experiment performed,we used the insulating material (i.e. asbestos) to coverthe surroundings of the heater and the uncovered parts of themodule.In the experiment, the parameters for the two cases were thesame only the coverage of the heater. When we performed theexperiment, we connected an external electrical load of 1.5 X.Fig. 10 shows the experimental results on the effect of temperatureไม่ใช่รื่นรมย์กว่า spreader ความร้อน เห็นจากรูป ถ้าเราให้การกระจายอุณหภูมิสม่ำเสมอทั่วพื้นผิวร้อนโมแบบเทอร์โมอิเล็กทริกส์ เราสามารถได้ดีกว่าแสดงผล
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