Answer :

Final answer:

The percent of blowdown for a boiler safety valve set to lift at 2450 psig and reset at 2364 psig is calculated using the formula (Lift Pressure - Reset Pressure) / Lift Pressure * 100, which in this case is 3.51%.

Explanation:

To calculate the percent of blowdown for a boiler safety valve, you would use the difference between the pressure at which the valve is set to lift (the lift pressure) and the pressure at which it resets (the reset pressure). You then divide this difference by the lift pressure and multiply by 100 to get the percentage.

The formula for blowdown percentage is:

Blowdown (%) = ((Lift Pressure - Reset Pressure) / Lift Pressure)
* 100

In this case, the lift pressure is 2450 psig and the reset pressure is 2364 psig. Plugging these values into the formula:

  • Blowdown (%) = ((2450 - 2364) / 2450) * 100
  • Blowdown (%) = (86 / 2450) * 100
  • Blowdown (%) = 0.0351 * 100
  • Blowdown (%) = 3.51%

Therefore, the percent of blowdown for the safety valve is 3.51%.

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Rewritten by : Barada