Answer / murthy

dew point temp is temp at which the first dew will be
formed if compressed. air dew point is defined because of
dew formation due to C02 & water which forms dry ice ,not
because of air liquefication.air with dew point -40C means
it is temperature upto which there will be no dew formation
upto this temp if pressure is increased even upto critical
pressure

Answer / vaibhav v t

-40C dew point in air drying means air will be condensed
at -40 deg.c only.-40 C means good dry air.

Answer / ramana reddy

at -40c the air will become to liquified. above this temp.
air in vapor state.

Answer / samy

Air dew point is -40C because of decC and decF are meet in -40

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Explain how can one quickly estimate the additional pressure drop to be introduced with more tube passes?

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CHEMICAL ENERGY BALANCE - EXAMPLE 11.5 : According to Margules Equation, P = x(1) p(1) g(1) + x(2) p(2) g(2) for a two-component mixture where P is bubble pressure, x is mole fraction, p is saturation pressure, g is constant given by ln g(1) = x(2) A x(2). Find the value of A as a constant when P = 1.08 bar, p(1) = 0.82 bar, p(2) = 1.93 bar in a 50 : 50 mole fraction mixture. Estimate the pressure required to completely liquefy the 30 : 70 mixture using the same equation, by proving P = 1.39 bar. Take note that ln g(2) = x(1) A x(1), ln g(1) = x(2) A x(2).

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MY generator water cooler inlet line height - 11 mtr inlet water line height - 7 mtr water come into the line from overhead tank, O/H tank height - 20 mtr the first tapping in the inlet line is 2" line which down to 4 mtr level plateform., second tapping in inlet water line goes to a pump 6" line installed at 4 mtr level plateform, pump capacity 200m3/hr, head- 30 mtr, hp-40. the outlet of pump of 6" water line connected to a header of 6 mtr long of 6" line, on this header the six tapping are connected, 4 nos. 3" line goes to 11 mtr height water cooler the pressure of the line is 0.15 to 0.25 kg/cm2, 2" and 4" pipe line connected to a cooler at 4 mtrlevel plateform. my question is, at 11 mtr height level the quantity of water and flow is not sufficient for my cooler, the temp. of cooler is rises much more. you are requested to suggest the modification of pipe line/ pump for take more water flow and pressure (desired pressure is 1 kg/cm2)

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What is Draft? It releavent to furnace.

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Explain how can you determine the largest impeller that a pump can handle?

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