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Prasit Phoosomma 제어로봇시스템학회 2018 제어로봇시스템학회 국제학술대회 논문집 Vol.2018 No.10
The objectives of research are prototyping renewable energy from solar dryers can be used by a nipa palm, and comparing the performance and efficiency of solar energy. In order to use a niba palm drying and analyze the breakeven by electrical power for the nipa palm use the power replacement type of solar energy. An experiment, the effects of solar drying cabinet, there are three drying temperatures control settings at 50℃, 60℃, and 70℃. The drying time of 6 hours. By choosing niba palm as the raw material for the experiment. The results show that the average solar energy intensity was 750.58 W/m². Initial moisture content of 39.65% dry basis and the final moisture content of 17.04% dry basis. The humidity decreases with time and temperature raise. Drying the nipa palm with solar dryer was very well dried and clearly, when set up the controlling temperature higher than 50℃. Also, set up the controlling temperature at 60℃ that the temperature inside the fumigator averaged at 57.52℃. The drying time of 6 hours per day, when consider a solar dryer, it would be costed more than two units. Considering the electricity consumption between solar drying and conventional electric dryers. The breakeven point is 371 days.
Prasit Phoosomma,Nat Kasayapanand,Narong Mungkung 대한전기학회 2019 Journal of Electrical Engineering & Technology Vol.14 No.2
This paper presents the charge and discharge combination of the supercapacitors and the AC power source in storing and supplying energy for computer backup power. According to the behavior of storing and supplying energy, the SC can be charged with high currents. Whereas the battery cannot. The supercapacitors effi ciency in storing and supplying power at high voltage and low current is 95.20%. An analysis also revealed that the charging time of the supercapacitors is less than 199 s. The combination of the supercapacitors and the battery required 604 s for charging time. The battery alone is the longest at 1080 s. Moreover, the study showed that the discharging time of the supercapacitors and the battery combination was more than 610 s. The discharging time of the battery and the supercapacitors were 285 and 579 s, respectively. Therefore, the combination of the supercapacitors and an AC power source can replace battery in the design of computer backup.