Hi
I have designed a stainless steel storage tank of horizontal cylindrical type (1 m dia, 2.2 m length and 10 mm thick, glass wool insulation of 50 mm thick ). In which R134a needs to be stored at a temperature of 14 deg C and pressure of 4.75 bar . Outside air temperature is 30 deg C. My process requirement is 20% of liquid in tank but I feel some additional liquid has to be stored as buffer. May I please know how much I have to store like 50% of 60% etc., and what would be the evaporation rate and pressure built up over a period of time. My tank design pressure is 12 bar. How long the evaporation takes to reach this design pressure?
Any help and suggestions are welcome.
Nataraj K