Q.14)Stem enters in a condenser at
360 C and with barometer reading
760 mm. If the vacuum of 695 mm is
produced. Then vacuum efficiency is
Answers
Answered by
0
Answer:
the area of a parallelogram is 44.7 mm square and perpendicular distances 7.9 mm then the base will be
Answered by
1
Answer:
120.70%
Explanation:
Vacuum Efficiency : It is defined as the ratio of the actual volume recorded by the gauge inside the condenser to the ideal volume.
Vacuum Efficiency =Actual vacuum /Ideal vacuum
Actual volume = Barometric pressure - Actual absolute pressure of the condenser
Ideal volume = Barometric pressure - Absolute pressure of steam
Actual volume =condenser volume =695 mm Hg
Barometer reading = 760 mm Hg
Condenser temperature = 360° C
Pressure @ 360° C =Absolute pressure head of steam =184.2 mm Hg
Vacuum Efficiency is:
nv = Actual vacuum/ Ideal vacuum
= 695/760 - 184.2
= (695/575.8) * 100
= 120.70%
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