จำนวน Repository ( 131 )

ออกแบบและสร้างอุปกรณ์ปั้มน้ำแบบไม่ใช้ไฟฟ้าในการเลี้ยงปลาตู้สวยงาม
ออกแบบและสร้างอุปกรณ์ปั้มน้ำแบบไม่ใช้ไฟฟ้าในการเลี้ยงปลาตู้สวยงาม

This research is designed to Design and construction of non-electric water pump equipment in the aquarium beautiful. And test the efficiency of the device. Designed and built. PVC pipe fittings The diameter is 12 inches high 130 centimeters. The operation of the device using the vacuum. Discharge of water and continuous access to equipment. Experimental results Non-electric water pump in the aquarium beautiful. Average water flow rate is 20 liters / hour.

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Effects of water injection on performance of 5-stroke si engine
Effects of water injection on performance of 5-stroke si engine

The objective of this work is to investigate the effects of water injection on performance of 5-stroke SI engine converted from the conventional 4-stroke SI engine.The cylinder head of the 2ndand3rd cylinder was modified and connected to each other to be the ultra-expansion stroke or second expansion stroke (5thstroke). The engine was performed on a dynamometer at different engine speeds and loads of 1500 to 3000 rpm and 25% to 75% of full load respectively. The water was injected during the second expansion stroke (5th stroke). Fuel and air consumptions engine torque rotational speed air/fuel ratio and temperatures of intake air engine oil cooling water and exhaust gas were recorded to use for calculating brake specific water and exhaust gas were recorded to use for calculating brake specific fuel consumption (BSFC) and engine efficiency. The results showed that at low engine speed of 1500 rpm for all loads the water injection improves BSFC and the engine efficiency by 26% and 3.3% respectively. However a large amount of injected water shows insignificant improvement on BSFC and the engine efficiency due to short residence time especially at high engine speed. The deterioration of engine oil can be observed after test. These findings are relevant to engine design or modification especially at low engine speed.

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การใช้ประโยชน์จากน้ำแช่เมล็ดถั่วดำแห้งในกระบวนการย้อมสีสิ่งทอ
การใช้ประโยชน์จากน้ำแช่เมล็ดถั่วดำแห้งในกระบวนการย้อมสีสิ่งทอ

The purpose of this research was to investigate the use of soaked black bean water and to add value to it otherwise it is considered as colored waste water. The soaked black bean water was analyzed for phytochemicals and dyeing process was carried out silk cotton and polyester fibers. Dried black beans were soaked in water ratio 1:1 for at least 12 hours. The dyeing process involved soaking the fiber in soaked black bean water at 100o for 30 min. to determine the type of fiber staining and color fastness. Results showed presence of Anthocyanin Anthraquinonoid Terpenoid Saponin Tannin and Flavonoids in soaked black bean water. It was found that dye could be absorbed by silk fabric in an acidic condition. The shade appeared red-brown at L*44.17 a*16.88 and b*20.13 color strength was 6.19 and ultraviolet protection was blocked more than 97.5 percentages as UPF 50+. Moreover the color fastness grading in crocking property was very good to excellent (CF 4-5) good washing fastness (WF4) and moderate fastness in the presence of light (LF 4). In conclusion soaked black bean water can be used for dyeing for silk fabric and enhance UV protection.

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การควบคุมคุณภาพการย้อมสีและตกแต่งสำเร็จเส้นด้ายผักตบชวาและวัสดุประกอบเพื่อการแปรรูปผลิตภัณฑ์เชิงพาณิชย์
การควบคุมคุณภาพการย้อมสีและตกแต่งสำเร็จเส้นด้ายผักตบชวาและวัสดุประกอบเพื่อการแปรรูปผลิตภัณฑ์เชิงพาณิชย์

Quality control of dyeing and finishing of Water Hyacinth yarns and their transformed materials for commercial was a main objective to establish the dye database of synthetic dye and natural dye. The dye database was a data for quality control in dyeing process of raw material as Water Hyacinth yarns also it resolved the un-repeatability dyeing problem. Reactive dye was used for synthetic dye database creation on dry Water Hyacinth yarns at 80oC for 30 minutes. Red as Hicion Red He-3B yellow as Hicion Yellow HE-4RN Blue as Hicion Navy Blue HER 150% and black as Hifix Black KNN were the represent synthetic dye and Sodim sulphate 20 g/l and sodium carbo nate 20 g/l were used as auxiliaries. The other hands the natural dye database was forming from Ebony tree Caesalpinia sappan and Turmeric. They were dye on dry Water Hyacinth yarns at 80oC for 30 minutes and Sodim sulphate 20 g/l was the auxiliary. Whereas Butterfly pea were dye at 80oC for 30 minutes by Sodim sulphate 20 g/l and sodium carbonate 20 g/l were the auxiliaries. The whole dye database was defined the totally in Primary Secondary and ternary dye cycle. The transfer knowledge was distributed to the enterprise at Nakhon Prathom Provincd as “Chumchonjaksanpaktobchawha Bann klongnokkratum”. The topics were “How to establish the synthetic and natural dye database” “Water repel lent finishing” and “developed and transformed the Water Hyacinth to products”. The target group was very satisfied in this topic as 4.39. In the result the proportion between economic and social factor by the income increasing in 1 year was 5.04. So the research project was achievement.

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ผลิตภัณฑ์แผ่นฝ้าเพดานผสมขุยมะพร้าวที่มีสมบัติต้านทานการดูดซึมน้ำและเป็นฉนวนป้องกันความร้อนสำหรับชุมชนท้องถิ่น
ผลิตภัณฑ์แผ่นฝ้าเพดานผสมขุยมะพร้าวที่มีสมบัติต้านทานการดูดซึมน้ำและเป็นฉนวนป้องกันความร้อนสำหรับชุมชนท้องถิ่น

This research aims to develop the coconut coir ceiling board mixed with natural latex. The 6 ratios of gypsum plaster: coconut coir: sodium silicate: natural rubber: tap water are equal to 1: 0.15: 0.03: 0.00: 1 1: 0.15: 0.03: 0.01: 1 1: 0.15: 0.03: 0.02: 1 1: 0.15: 0.03: 0.03: 1 1: 0.15: 0.03: 0.04: 1 and 1: 0.15: 0.03: 0.05: 1 by weight. The ceiling boards were produced by casting in normal temperature (30 – 35 degree of Celsius). The properties testing of coconut coir ceiling board mixed with natural latex followed the TIS 219-2009 standard (gypsum plasterboard) including: breaking load nail pull resistance deflection water absorption density thermal conductivity coefficient and real usage. From the results 1: 0.15: 0.03: 0.03: 1 ratio is the most suitable ratio of coconut coir ceiling board mixed with natural latex. This developed ceiling boards can reduce the quantity of coconut coir waste and get the good thermal insulation ceiling board products.

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