Answer
Ans: For cargo spaces:
A)CO2 sufficient to give min volume of free g as equal to 30% of gross volume of largest cargo space
For machinery space:
B)CO2 sufficient to give min volume of free g as equal to 40% of gross volume of largest machinery space excluding the casing
C)CO2 sufficient to give min volume of free g as equal to 35% of gross volume of largest machinery space including the casing
The greater value of the above A or B or C is taken for calculating the total amount of CO2 required = V
Vol of free CO2 is to be taken as 0.56m3/kg
So ma ss of CO2 required is (V / 0.56) = M kg
CO2 capacity per cylinder = 45.4 kg
No. Of cylinders required = M/45.4 … rounded off to next whole number.