PENGARUH TEKANAN UDARA PADA KOMPOR BENSIN TERHADAP PRESTASI PEMBAKARAN DENGAN METODE PENGUAPAN

Vapor carburetor was invented by Tom Ogle in 1971. By his invention, fuel consumption of vehicle more economic than conventional carburetor. In the rare and high price of LPG, writer made a machine which has same principle with vapor carburetor. Gasoline stove can be an alternative and solution for many problem caused gas stove. Writer used aerator as an air supplier and also as vaporizer of pertalite. Writer compared Specific Fuel Consumption (SFC) every pressure (variable) which is as an indicator of combustion performance. According from this experiment showed smallest SFC number was happened on 0,6 kPa, which at this point was happened optimum combustion. Generally, at pressure range 0,6 kPa to 2,5 kPa, higher pressure will increase Specific Fuel Consumption (SFC) number, but the other way will need shorter time

Hard Candy Lozenges Formulation Of Legundi (Vitex Trifolia L.) Leaf Extract

The purpose of this study is to determine the effect of sugar level variations (sucrose and glucose) to the physical properties and flavor, as well as to determine the level of consumer preferences on hard candy lozenges of Legundi leaf extract. Hard candy lozenges are produced using the fusion method to create three formulas contain combination of sucrose and glucose, which is FI (70%: 30%), FII (50%: 50%), and FIII (30%: 70%). Hard candy lozenges were tested the physical properties include: uniformity of weight, hardness, moisture content test, a soluble and TLC-densitometry and responsive taste test using a questionnaire with scoring assessment by respondents. The test results were analyzed using SPSS 11.0 for windows with a significance level (α) = 0.05. The results showed that the variation of sucrose and glucose levels affect the physical properties of hard candy lozenges of Legundi leaf extract that increases the hardness level, and increase the time to dissolve (p 0.05). The more sucrose is used it increase the hardness of the tablets and dissolve into the longer time. Based on the perceptive sense test results subjectively of hard candy lozenges of Legundi leaf extract, Formula III is the most favored by respondents with sucrose and glucose ratio of 30%: 70%

PENGARUH TEKANAN UDARA PADA KOMPOR BENSIN TERHADAP PRESTASI PEMBAKARAN DENGAN METODE PENGUAPAN

Vapor carburetor was invented by Tom Ogle in 1971. By his invention, fuel consumption of vehicle more economic than conventional carburetor. In the rare and high price of LPG, writer made a machine which has same principle with vapor carburetor. Gasoline stove can be an alternative and solution for many problem caused gas stove. Writer used aerator as an air supplier and also as vaporizer of pertalite. Writer compared Specific Fuel Consumption (SFC) every pressure (variable) which is as an indicator of combustion performance. According from this experiment showed smallest SFC number was happened on 0,6 kPa, which at this point was happened optimum combustion. Generally, at pressure range 0,6 kPa to 2,5 kPa, higher pressure will increase Specific Fuel Consumption (SFC) number, but the other way will need shorter time