What's the coefficient of HSD if :
1) Temperature 32°C and SG 0.822
To calculate the coefficient of HSD at a temperature of 32°C and a specific gravity (SG) of 0.822, we would first need to determine the density of HSD at those conditions.
The formula to calculate the density of HSD is:
Density = 141.5 / (131.5 + °API)
Where °API is the American Petroleum Institute (API) gravity of HSD, which can be calculated using the formula:
°API = (141.5 / SG) - 131.5
Given SG = 0.822, we can determine the API gravity first:
°API = (141.5 / 0.822) - 131.5
°API = 172.22 - 131.5
°API = 40.72
Now we can calculate the density of HSD at 32°C and SG 0.822:
Density = 141.5 / (131.5 + 40.72)
Density = 141.5 / 172.22
Density ≈ 0.8217 g/cm3
Next, we need to determine the coefficient of HSD at 32°C:
Coefficient of HSD = Density / SG
Coefficient of HSD = 0.8217 / 0.822
Coefficient of HSD ≈ 0.9996
Therefore, the coefficient of HSD at a temperature of 32°C and SG 0.822 is approximately 0.9996.