Browsing Journal Articles by Author "eng@rmutp.ac.th"
Now showing items 1-14 of 14
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Analysis and control of Shunt-Compensator for mitigating Unbalanced Voltages
Srisongkram, W.; Phanthuna, N.; Boonchiam, P.; Subsingha, W.; Mithulananthan, N. (IEEE, 2008-08-05)This paper presents the analysis and the control of shunt-compensator for improving unbalanced voltages of power distribution systems in Thailand. The shunt-compensator is connected to the low voltage level in power ... -
The Analysis of high-Voltage Electric Field Stress in Lp and Ls coils of Tesla Transformer for studying the efficiency design
Thongkeaw, Somkieat; Nedphograw, Supawud; Plangklang, Boonyang; Apiratikul, Promsak (icee2008, 2008)This article presents The Analysis for high-Voltage Electric Stress in Lp and Ls coils of Tesla Transformer for studying the efficiency design. The tesla transformer is designed at 350kV rating Voltage and 120 kHz resonant ... -
Design CPW Fed Slot Antenna for Wideband Applications
Nithisopa, K.; Nakasuwan, J.; Songthanapitak, N.; Anantrasirichai, N.; Wakabayashi, T. (PIERS Online, 2007)In this paper, a CPW-fed slot antenna for wideband application was designed and simulated. In order to examine the performances of this antenna, a prototype was designed at frequency 2.4 GHz and simulated with various width ... -
Design Narrow Slot Antenna for Dual Frequency
Chulvanich, C.; Nakasuwan, J.; Songthanapitak, N.; Anantrasirichai, N.; Wakabayashi, T. (PIERS Online, 2007)The narrow slot loop antenna and linear slot antenna fed by microstrip line are designed for dual frequency at 2.44 GHz and 5.25 GHz on the standard of IEEE 802.11b/g (2.4{2.4835 GHz), IEEE 802.11j/a (5.15{5.35 GHz), and ... -
Development program for heat balance analysis fuel to steam efficiency boiler and data wireless transfer
Phanthuna, Nattapong; Srisongkram, Warunee; Pasuk, Sunya; Trongtirakul, Thaweesak (World Scientific and Engineering Academy and Society (WSEAS), 2009)This research aim to improve a combustion system of boiler within increase combustion efficiency and use all out of the energy. The large boilers were used in the industrial factories which consume a lot of energy for ... -
The factors of resource and educational investment affecting to the number of the post graduate students of Rajamangala University of Technology Phra Nakorn
Wirotcheewan, Prasert (2008)The objective of this research is to study the factors of resource and investment affecting to the number of post graduate students of Rajamangala University of Technology Phra Nakorn. The samples of this research are to ... -
Finned-Tube Condenser Cleaner Machine
Puangcharoenchai, Somjin (2007)Now a day the mostly air condition are use the air for reducing the temperature at the condenser unit. Moreover, many dusts are adhering in area of fin coil. From this reason, the heart reduction efficiency is decreased ... -
Insulator testing set for finding the efficiency in Ozone generator design
Nedphograw, Supawud; Phupha, Vallop; Boonchiam, Paisan (ISH 2007, 2007-08-27)This paper presents a testing of three insulators namely solid, fluid and gas for choosing the best electric insulators. In order to generate the ozone gas, the insulator must be selected in electrode set. Nowadays, the ... -
A Microstrip Folded Resonator Sensor for Measurement of Dielectric Constant
Seewattanapon, Somporn; Wattakeekamthorn, Thanakit; Somwong, Tanee; Akkaraekthalin, Prayoot (IEEE ECTI-CON 2008, 2008-07-23)A microstrip folded ring resonator sensor for measurement of dielectric constant in a compact area of material under test is proposed. The resonant characteristics of resonator vary with dielectric constant of material. ... -
A Study and Development of Solar Hybrid Energy Oven
Suwantaroj, Kullayot (2010-02-28)The objective of this paper is to design and develope solar hybrid oven for common usage heat energy between sunshine and heater. The technology improvement of integrated solar dryer cabinet aims to prove that the solar ... -
Study of Ozone Generator with Electric Fields Distribution on Water Surface
Charlangsut, Aroon; Boonthienthong, Manat; Thongkeaw, Somkieat; Boonchiam, Paisan (ISH 2007, 2008-08-27)This paper proposes a study of an Ozone generator. The generator under the study is designed using the electrode with uniform field. The electrode is constructed in the plane shape with positive potential. The transformer ... -
Using Condensate Water to Reduce Heat for Finned-Tube Condenser of Air Conditioning System
Puangcharoenchai, Somjin (2007)Now a day the mostly air condition are use vapor compression refrigeration system in which R-22 refrigerant is used as a working substance. From the results of study, it found that the quantity of water vapor or moisture ... -
การวิเคราะห์ความอยู่รอด : การศึกษาการออกกลางคันของนักศึกษา ปวส. สายช่างอุตสาหกรรม มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร วิทยาเขตพระนครเหนือ
แสงมา, วัชรินทร์; ทองขาว, พิษณุ; ศิริมา, พรพิศ (2008)The objectives of the study were to find the survival probabilities, the hazard rates of dropping out of the technical diploma level students at Rajamangala University of Technology Phra Nakhon, North Bangkok Campus, and ... -
การวิเคราะห์ระบบแถวคอย, กรณีศึกษาการรับสมัครนักศึกษามหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร วิทยาเขตพระนครเหนือ
พลสุวัตถิ์, ดำรงฤทธิ์ (2008)The objectives of the study were to find the arrival rate of applicants who applied to study at Rajamangala university of Technology Pra Nakhon, North Bangkok Campus, the service rate of admission officers, and to analyze ...