Steam Loss in Orifices
Steam Loss in Orifices
(OP)
People please help, I have been usuing this formula to calculate steam loss in orifices for years:
Q = 24.24 x Pa x d^2, Q = lbs/hr, Pa = Steam pressure, psia, and d = orifice diameter in inches. My boss wants to know where the constant 24.24 came from. I understand this is a variation of Navier's formula, I tried every formulation of Navier's formula and none gave me the constant 24.24, Does anybody know something that I missed?
Please help.
Q = 24.24 x Pa x d^2, Q = lbs/hr, Pa = Steam pressure, psia, and d = orifice diameter in inches. My boss wants to know where the constant 24.24 came from. I understand this is a variation of Navier's formula, I tried every formulation of Navier's formula and none gave me the constant 24.24, Does anybody know something that I missed?
Please help.





RE: Steam Loss in Orifices
Regards
RE: Steam Loss in Orifices
C ranges from 0.6 to 1. It should be noted that this is for sonic flow, i.e., P2 < P1*(2/(k+1))^(k/(k-1))