Competition: Answer the quiz and win a €500 voucher!

Thank you for registering/taking part in the webinar “Get the most out of your dew point measurement”.

To tribute your interest in this webinar, VPInstruments have organized a small competition on the dew point topic. Answer the quiz below to win a €500 voucher for your first order with VPInstruments!

One lucky participant with the right answer will be picked by VPInstruments. The result will be announced on our LinkedIn page on November 1^st, 2022!

Quiz

A 25hp compressor produces about 100 SCFM (standard cubic feet per minute) at 100 psig.  During a working week of 40 hours, it would discharge approximately 240,000 SCF (standard cubic feet) into the piping system (100 SCFM x 60 min x 40 hours = 240,000 SCF).

Assume at the aftercooler outlet, the air temperature is 80°F and saturated. Each SCF contains 1.42 grains of moisture vapor at 80^oF. The air surrounding the airlines is 70^oF. At 70^oF, a SCF of free air holds 1.03 grains of moisture vapor at 100% relative humidity.

How many grains of moisture will be condensing in one week due to a 10⁰ reduction in temperature?

A. 340,000 grains

B. 247,200 grains

C. 93,600 grains