จำนวน Repository ( 32 )
การสร้างและหาประสิทธิภาพชุดทดลองเพื่อพัฒนาทักษะการเรียนรู้วิชากลศาสตร์ของไหล
The Experiment Set of Pipe’s Loss Flow is intended to design and create a trial version of the loss of flow in the pipe and the objective is to find the speed of the flow through the pipe by reading the difference of pressure The Experiment Set of Pipe’s Loss Flow is equipped with the structure of a width of 86 centimeters long 120 cm high 171 centimeters and have a trial version which contains the water pump the Centrifugal pump size 0.5 HP 220 – 240 volt 1 set. The tanks for trial 28 liters
Continuous production of biodiesel in a continuous reactor with minimal
The yield of biodiesel from a base catalyzed transesterification in a batch system is generally low due to the reversed reaction. In addition the process tends to generate high amount of waste water in the washing step. In order to overcome the above problems a continuous process was adopted in this study. Solid alum was used to stop the reaction and filtered off from the biodiesel products. The results showed that biodiesel production from palm oil in a 2.8 liter continuous reactor filled with stainless steel wool acted as a static mixer gave biodiesel of 99.6% purity in 10 minutes at the flow rate of 280 milliliter per minutes. KOH was used as the reaction catalyst at a concentration of 0.75% based on ethanol. The molar ratio of ethanol to oil was 9:1. Three hundred and fifty gram of alum could satisfactorily neutralize one liter of biodiesel.