Graph For Conversion Pressure Ba Cylinder 6L & 6.8L
Graph For Conversion Pressure Ba Cylinder 6L & 6.8L
Graph For Conversion Pressure Ba Cylinder 6L & 6.8L
8L
TEMP C MAX. PRESS MIN. PRESS 6L MIN. PRESS 6.8L DURATION PRESSURE 6.8L
-5 27.9 18.6 16.5 0 0.0
0 28.4 19.0 16.8 3 17.6
5 29.0 19.3 17.1 6 35.3
10 29.5 19.7 17.4 9 52.9
15 30.0 20.0 17.7 12 70.6
20 30.5 20.3 18.0 15 88.2
25 31.0 20.7 18.3 18 105.9
30 31.6 21.0 18.6 21 123.5
35 32.1 21.4 18.9 24 141.2
40 32.6 21.7 19.2 27 158.8
45 33.1 22.1 19.5 30 176.5
50 33.6 22.4 19.9 33 194.1
55 34.2 22.8 20.2 36 211.8
60 34.7 23.1 20.5 39 229.4
65 35.2 23.5 20.8 42 247.1
70 35.7 23.8 21.1 45 264.7
75 36.3 24.2 21.4 48 282.4
80 36.8 24.5 21.7 51 300.0
85 37.3 24.9 22.0 54 317.6
90 37.8 25.2 22.3 57 335.3
95 38.3 25.6 22.6 60 352.9
40.0
35.0
30.0
25.0
20.0
15.0
10.0
5.0
0.0
-5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
0.0
-5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
40.0 400.0
60.0 350.0
80.0
300.0
100.0
120.0 250.0
140.0 200.0
160.0
150.0
180.0
200.0 100.0
220.0 50.0
240.0
0.0
260.0 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60
280.0 6L Cyli nder 6.8L Cyl i nder
300.0
320.0
340.0
360.0
380.0
400.0
5 90 95
5 90 95
LNG/C TANGGUH PALUNG
40.0
35.0
Allowable
range
30.0
Pressure (MPa)
25.0
20.0
15.0
10.0
-5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Temperature (℃)
350.0
Min. Duration
300.0
Pressure (Bar)
250.0
100.0
Whistle
50.0
activated
0.0
0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60
Duration (Min)
�_1/𝑇_1
FROM THE FORMULA WE CAN MAKE EQUATION =�_2/𝑇_2
WHEN YOU NEED TO FIND CONVERTED PRESSURE, YOU SHOULD CHECK YOUR BA CYLINDER REFERENCE TEMP. FOR MAX. PRESSURE
OUR BA CYLINDER HAVE 2 KINDS OF QUANTITY : 6L (METAL CYLINDER) AND 6.8L (KEVLAR COMPOSITE CYLINDER)
BOTH OF THEM USING SPEC FOR MAX. PRESSURE 300BAR AT REFERENCE TEMP. 15°C
FROM THAT REFERENCE YOU CAN FIND CONVERTED PRESSURE AS BELOW
THE MOST IMPORTANT THING THAT YOU SHOULD CONVERT TEMPERATURE INTO DEGREE KELVIN BY ADDING 273 FROM DEGRE CELCIUS
FOR EXAMPLE WHEN TEMPERATURE AT THAT TIME IS 25°C AND IT SHOWS 300BAR, HOW MUCH THE CONVERTED PRESSURE?
�_2=(�_1×𝑇_ �_2=(300×(15℃
2)/𝑇_1 >>>>>>>> +273))/((25℃+273)) >>>>>>>> 289.93BAR
OUR BA CYLINDER HAS QUANTITY OF 6.8L AND 6L. IT IS MEASURED USING WATER QUANTITY WITH 1 BAR PRESSURE (ATMOSPHERE PRESS)
WHEN AIR IS FILLED INSIDE, IT WILL MAKE PRESSURE TO SHRINK THE AIR IN ATMOSPHERE PRESS. UNTIL REACH MAX. PRESSURE 300BAR
SO YOU NEED TO FIND ACTUAL VOLUME OF AIR IF IN ATMOSPHERE PRESSURE (1 BAR) USING IDEAL GAS LAW FORMULA
FOR EXAMPLE HOW MUCH MAX. QUANTITY AIR INSIDE BA CYLINDER OF 6.8L?
𝑉_2=(�_1×𝑉_ 𝑉_2=(300×6.8�
�_1 𝑉_1=�_2 >>>>>>>> 1)/�_2 >>>>>>>> )/(1 𝐵𝐴𝑅) >>>>>>>> 2040L AIR
� _2
NORMALLY ADULT WILL BREATHE BETWEEN 5-8LITRES AIR PER MINUTES, DURING MODERATE EXERCISE BETWEEN 40-60LITRES
AS GUIDE WE USE 40LITRES PER MINUTE TO CALCULATE DURATION OF BA CYLINDER AS BELOW