Now showing items 41-60 of 438

    • Heat transfer enhancement of closed loop cooling tower by using water spray 

      Satthapong, Pornchai; พรชัย เศรษฐพงษ์ (2021-11-03)
      A closed wet cooling tower became popular for heat transfer process, but the existing system was not sufficient for the heat transfer of the manufacturing line. This research aimed at investigating the heat transfer ...
    • Suitability study of using air conditioning system in office building for energy conservation and thermal comfort conditions 

      Mekkhum, Pattana; พัฒนะ เมฆขำ (2021-11-03)
      Presently, Rental office is famous in downtown that near food center and have good transportation. In Thailand, office buildings usually have operating time 8-10 hours per day. So, need to improve the building for energy ...
    • Development of composite materials by laterite and sand as plastic for porous material 

      Ngenprom, Nirojn; นิโรจน์ เงินพรหม; Pradmali, Sajjachan; สัจจะชาญ พรัดมะลิ; Sanyawuth, Thanan; ธนันท์ ศัลยวุฒิ (2021-09-14)
      จากการทดลองวิจัยพบว่าดินเป็นชั้นคุณภาพ A4 ประเภทของดินทรายแป้ง (Silty Soils) ผลการขึ้นรูปตามอัตราส่วนของ ดินลูกรัง – พลาสติก-ทราย ดินลูกรังและทรายที่ไมมีเรซินเป็นตัวประสานไมสามารถขึ้นรูปได้ และ ดินลูกรังและทรายที่มีเรซิน ...
    • The development of econo car by adjusting fuel injection pressure 

      Tinprabath, Padipan; ปฎิภาณ ถิ่นพระบาท (2021-09-14)
      The study of the efficiency of fuel consumption by adjusting the fuel injection pressure is basically one optimization method to maximize the engine combustion. In this current study, the Honda wave 110 cc. engine has been ...
    • Continuing professional development for engineers 

      Rugthaicharoencheep, Nattachote; นัฐโชติ รักไทยเจริญชีพ; Suwantaroj, Kullayot; กุลยศ สุวันทโรจน์; Jiraprasertwong, Pichet; พิเชฐ จิรประเสริฐวงศ์ (2021-09-14)
      Continuing Professional Development for Engineers is any structured process or activity that enhances the competence and quality of a person necessary to perform a professional job. The continuing engineering profession ...
    • A study fatigue of steel S45C subjected to torsion 

      Wirotcheewan, Prasert; ประเสริฐ วิโรจน์ชีวัน (2021-09-14)
      The fatigue testing machine that uses the force of torsion is invented to be a compact machine that uses the torsion as the force in the test. From the tests, it achieved the highest of 200 newton meters using pneumatics ...
    • A study of useage influence affecting tyre rolling coefficient 

      Lakkam, Supachai; ศุภชัย หลักคำ; Suwantaroj, Kullayot; กุลยศ สุวันทโรจน์ (2021-09-14)
      The objectives of this research are to study the rate of deterioration of tyre friction coefficient and investigate the quality of new and old tyres that are currently in use. A set of the rolling resistance testing was ...
    • Improvement of the ultrasonic scaler for mobile dental unit 

      Kongkeaw, Anupong; อนุพงษ์ คงแก้ว (2021-08-27)
      This research presents the development of ultrasonic scaler for mobile dental unit. The operation of the scaler uses a phase-locked loop circuit to generate high frequency electrical signal. Then, the signal is amplified ...
    • Study on accuracy value of resistance measurement by using digital multimeter 

      Threekoson, Jarupong; จารุพงษ์ ตรีโกศล (2017-08-19)
      In general, the measured resistance with a digital multimeter. Users tend to be measured and then displayed on the screen to the user, regardless of the value that is accurate or not. The value displayed on screen digital ...
    • Variable speed drive for energy saving in oil pump 

      Udompornvirat, Weerapon; วีรพล อุดมพรวิรัตน์ (2017-08-19)
      This thesis aims to study the optimization of the supply fuel system of pipeline by improving the pumps system from use pump size 1850 kW (2 pupms) and use only control valve. We design new system by use pump size 1850 kW ...
    • Development efficiency of cemented tungsten carbide insert for rough milling 

      Jongthep, Sarayut; สรายุทธ จงเทพ (2021-02-25)
      Carbide Insert efficiency development of this research equivalent to standard insert type : SEKN1203AFTN. For the higher operating efficiency is the machining time by the tool life increased for rough machine of face milling ...
    • Regression model development for preliminary calculate cost for a large building in Roi Et Province 

      Yoshchaisarn, Patikarn; ปฏิการ โยชน์ไชยสาร (2021-02-25)
      The purpose of this research was to study level of the preliminary cost calculate for a large building in Roi Et province and to study the factors that affected on initial cost reduction of large building constructions in ...
    • Design of experiment for improving wire bonding process of integrated circuit 

      Meemoosor, Apirat; อภิรัตน์ มีมูซอ (2021-02-25)
      Using copper wire instead of gold wire can reduce a lot of cost in IC production of semiconductor industrial. However, the circuit stability (Circuit Reliability) is less than the use of goal wire. Therefore, the study to ...
    • A study of the appropriate factor level for improving annealing process of rolled coil steel sheet 

      Chueaduangkhao, Sittipong; สิทธิพงษ์ เชื้อดวงขาว (2021-02-25)
      The objective of this research is to study the suitable factor level for the improvement of annealing furnace for rolled coils steel sheet. The experimenting has been performed to find suitable oxygen level by 5 annealing ...
    • Determining for evaluated carbon footprint of products form tungsten carbide insert (16ER60) thread turning production using carbon footprint of product by organization management of greenhouse gases plc. guidelines 

      Piamkhum, Jirayut; จิระยุทธ เปี่ยมคุ้ม (2021-02-25)
      The purpose of research is to study the carbon footprint evaluation of products for thread turned Tungsten Carbide 16ER60 of production. To assess amount of greenhouse gas emissions that affect the environment. The key ...
    • Improvement of image sharpness by histogram equalization through two-dimensional wavelet transform 

      Chaidee, Trairong; ไตรรงค์ ใจดี (2021-01-31)
      This thesis emphasizes the improvement approaches of quality on digital data to be more sharpness by two- dimensional technique. Today, the availability from the improvement of Digital Image Processing is used widely in ...
    • Evaluation of lightning performance in subtransmission line 69 kv on electrical monopole 

      Songsang, Arnon; อานนท์ ส่งแสง (2021-01-31)
      Most of Metropolitan Electricity Authority (MEA) electric power system is using overhead line. It is 94% in the system including subtransmission, distribution and low voltage system. All of them were installed on concrete ...
    • The combined loss reduction approach to apply in distribution system 

      Kritavorn, Pairat; ไพรัตน์ กรีถาวร (2021-01-31)
      This thesis presents the combined loss reduction approach to apply in distribution system. The thesis objective reduces the loss in the distribution system, when all voltage magnitude levels at connection points must under ...
    • Energy saving strategies in refrigeration systems by defrost management 

      Meeiam, Teerapong; ธีรพงศ์ มีเอี่ยม (2021-01-31)
      Defrosting at evaporator panel is one of working cycles in freezer. Power consumption in defrosting does not meet the objective of using freezer, therefore, the approach to decrease power consumption in defrosting is one ...
    • Lightning performance assessment of MEA subtransmission and distribution lines 

      Supanus, Kamol; กมล สุภานัส (2021-01-31)
      Design of grounding system to protect against lightning and fault is important for both safety and reliability especially for Metropolitan Electricity Authority (MEA) as mostly Metropolitan Electricity Authority operates ...