ไม่ปรากฏบทคัดย่อ

ไม่ปรากฏบทคัดย่อ

This research was aimed to investigate for pineapple leaf paper drying. In this study process of drying the paper as a final step after the other. Paper drying time takes in solar energy to dry naturally for at least 2-3 days or more without natural sunshine. Solar hybrid energy dryer was designed for drying faster than traditional drying. The development of solar hybrid energy dryer ability to operate continuously. The solar dryer receives the heat from sunshine by passing into the solar panel dimension 1 x 2.6 m2 . The panel was installed on the top of the oven which declined 15 degree from the ground. The dimension of the oven is 1 x 1.05 x 1.30 m3 and have added heat to paraphrase another 2 rooms and heater 4 kW with controller and have added heat to paraphrase another 2 rooms. The dryer installed heater 4 kW with temperature controller and blower 0.22 kW serves as the circulation of heat in the oven to constant flow of 0.138 m3 / s. Experiment research test 3 types ; the use of solar energy alone the use of solar heater with a temperature of 50 55 and 60 °C and the heater only at 50 55 and 60 °C with three temperature settings. The variables in the study such as temperature humidity in the dryer humidity and Solar energy affect the pineapple leaf paper drying time. Experimental results from solar heater hybrid with 60 °C temperature setting was dried in minimum period of 3 hours and half at an average initial moisture content 1043.70% db to the final moisture content of 9.12% db. Highest average temperature in the dryer was 64.33 °C with electrical energy consumption 10.5 kWh. The use of only solar drying was dried in maximum period of 5 hours at an average initial moisture content 1070.98% db to the final moisture content of 15.84% db. Highest average temperature in the dryer was 39.89 °C with minimum electrical energy consumption 10.5 kWh.

The objectives of this research were to 1) develop the Multimedia Computer Assisted Instruction for Teaching Illuminant Engineering on Interior Lighting Design 2) compare learning achievement between before and after learning 3) evaluate students’ learning progress and 4) study students’ satisfaction on the Multimedia Computer Assisted Instruction. The sample studied were 28 third year students belonging to the field of electrical power engineering faculty of Industrial Education Rajamangala University of Technology Phra Nakon. The instruments of this research included 1) the Multimedia Computer Assisted Instruction for teaching Illuminant Engineering on Interior Lighting Design 2) an quality evaluation questionnaire of the Multimedia Computer Assisted Instruction 3) pretest and posttest of learning achievement and 4) student satisfaction questionnaire on the Multimedia Computer Assisted Instruction. The results were as follow: 1. The efficiency of the Multimedia Computer Assisted Instruction for teaching Illuminant Engineering on Interior Lighting Design was 81.45/85.71 which was higher than the criteria set of 80/80. 2. The mean score of posttest ( X = 12.68) was significantly higher than pretest ( X = 5.54) at .01 level. ง 3. The evaluation result of learning progress by the method of Average Normalized Gain was 0.77 which was in a high progress level. 4. Students’ satisfaction on the Multimedia Computer Assisted Instruction for teaching Illuminant Engineering on Interior Lighting Design was at the level of the most satisfaction ( X = 4.80).

This research presents the development of a low rate and low power consumption low rate wireless network. Low rate wireless networks are cheap and comprised of a small fully autonomous processing communication and remote control devices. The purpose of this study is to develop the system for remote wireless lighting system. They will work with wireless network system (WNS). WNS has been restricted power supply communication distance and low computing power. But they will work with network in vast area send and receive raw data from each network node. It has the ability to cooperatively collect data and retransmit in order to process or alert. The step of the experiment is creating main node and sub node in lighting area and transmission of control data between them with less electrical wiring. When wireless node not receiving or transmitting data the module can be switched into the sleep mode low power consumption mode. We can reduce the use of electrical wiring; insulated insulation material or other that related to and include energy too.