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(i) What is the wetted area of the vessel? (ii) What is the required relief rate of the PRV? (iii) What is the required orifice area, and letter designation of the PRV?

(i) What is the wetted area of the vessel? (ii) What is the required relief rate of the PRV? (iii) What is the required orifice area, and letter designation of the PRV?

Refrigeration and Air Conditioning Technology (MindTap Course List)
Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Chapter9: Refrigerant And Oil Chemistry And Management-recovery, Recycling,
Section: Chapter Questions
Problem 28RQ: Briefly describe the types of piercing valves used in the industry, and list some advantages and...
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(i) What is the wetted area of the vessel? (ii) What is the required relief rate of the PRV? (iii) What is the required orifice area, and letter designation of the PRV? (iv) What is the rated relief rate of the PRV?
Transcribed Image Text:(i) What is the wetted area of the vessel? (ii) What is the required relief rate of the PRV? (iii) What is the required orifice area, and letter designation of the PRV? (iv) What is the rated relief rate of the PRV?
Question 9 A 10m diameter above-ground uninsulated steel spherical pressure vessel contains liquified butane (CaH10) and is controlled to be filled to within 3m of the top. There is a risk that the tank could be surrounded by fire. Your task is to choose an appropriate pressure relief valve that will discharge to atmosphere and will not have a rupture disk fitted. Answer the questions that follow the data below; Butane Vessel MAWP = 1500 kPag boiling point = -1°C compressibility (Z)=0.9 orifice gas constant (C) = 335 latent heat vaporisation (AH.) = 386 kJ/kg overpressure = +21% atm. pressure = 101 kPaa actual coeff. of discharge (Ka) = 1
Transcribed Image Text:Question 9 A 10m diameter above-ground uninsulated steel spherical pressure vessel contains liquified butane (CaH10) and is controlled to be filled to within 3m of the top. There is a risk that the tank could be surrounded by fire. Your task is to choose an appropriate pressure relief valve that will discharge to atmosphere and will not have a rupture disk fitted. Answer the questions that follow the data below; Butane Vessel MAWP = 1500 kPag boiling point = -1°C compressibility (Z)=0.9 orifice gas constant (C) = 335 latent heat vaporisation (AH.) = 386 kJ/kg overpressure = +21% atm. pressure = 101 kPaa actual coeff. of discharge (Ka) = 1
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