Question

Problem #3 The TLV-TWA for hydrogen sulfide gas is 10 ppm. Hydrogen sulfide gas is stored in a tank at 100 psig and 80°F. Estimate the diameter of a hole in the tank leading to a local hydrogen sulfide concentration equal to the TLV. The local ventilation rate is 2500 ft/min and is deemed average. The ambient pressure is 1 atm.

Answer 1

following listed data below are Solution. The are quien which Local ventilation rate Oy= 2500 ft (min. H₂S is stored at: P = 100 Psig = 114.7 Psia & T = 80°F = 540 R moleculare weight of its : Mitzs - 34 fom mole Ambient presswel 1 atm TLV - 10 ppm The average concentration (in ppm) of any Volatile species in an enclosure given a source term Om and a ventilation rate or is given as Cppm = Om Rg I x 100 ---- ----Dr LiM From standard datas. t = non ideal mixing factor le for Hugº -

:. А - 1.6 Хајо“ и - АА -- 4X 1.6 8 10 тузи d = 1.43 x 10 3 in