Question

A certain quantity of gas is head at constant pressure from 35 °0 to 185°c. Estimate Theamount of hem transferred, ideal work done, change in internal energy, when the initial volumeof the gas is 0.6 m3.​

Answer 1

Answer:

A brief literature review related to the blowdown of pressure vessels / pipelines’, accentuating

the development of a simple steady-state gas flow model in a vent pipe, provides research

progress to date. An extensive literature on blowdown modeling and experimentation related to

pressure vessels and pipelines exists and is discussed in this section of the thesis.

The first section of the literature review explains comprehensively the purpose of blowing down

a pressure vessel / pipeline followed by a brief description of blowdown process in pressure

vessels and pipelines. Different release cases are tabulated and the need to design Emergency

Depressurization System is highlighted in this section. The second section emphasizes on the

typical pressure relief valve. The third section involves reviewing of thermodynamic JouleThomson phenomenon taking place during the blowdown. This part will also provide insights

into the responsible parameters for causing changes in process conditions during blowdown. The

fourth section provides details of hazards related to depressurizing a pressure vessel / pipeline.

This part also provides an insight of the brittlement theory related to metals. The next section is

introduced here, which gives an extensive review on blowdown process modeling from safety

perspective and provides detailed investigations performed by various researchers on blowdown

modeling. A quick summarization of the available literature review is provided towards the end

of this chapter with an objective to focus on a simple gas flow vent model.

2.1 Blowdown

In the last few decades, oil & gas industries have shown excellent developing trends with respect

to production and technology. National Petroleum Council (NPC) of United States evaluated the

future demand and supply in oil and gas. This showed a growth by 50-60% in the demand for

natural resources such as oil and gas, coal, nuclear energy etc. calls for a strengthening in