A single acting reciprocating pump running at 20 rpm has a bore and stroke of 40 cm each. The suction and delivery heads are 4 and 20 m. The suction and delivery pipes of 20 cm diameter are 4 m and 20 m long. F = 0.02. Determine the power required if the efficiency is 80%.
Answers
van der Waals radius is defined as half of the internuclear separation of two non-bonded atoms of the same element on their closest possible approach and is denoted rv. ... In addition to not being covalently bonded, the atoms must also not be of the same molecule.
Answer:
this qns refers to the Fluid Machinery.
Explanation:
given data.
N = 20 rpm
bore = stroke = 40 cm
Hs = 4 cm
Hd = 20 cm
diameter D = 4m
length L = 20 m
then,
POWER REQUIRED = ???
now, we know that...
P = ¶×g×Q×H-------------(1 )
where,
¶= row (1000)
g = gravity (9.81)
Q = theoretical discharge (Q =ALN/60)
H = TOTAL HEAD ( Hs + Hd)
now,
Q = ALN/60-----------------( 2 )
:• A = π/4 × D² =12.566 m²
now, from the eqn 2
Q= (12.566×0.4×20)/60
= 1.666 m³/sec
now, putting the all values in the primary equ ( 1 )
P = 1000 × 9.81 × 1.66 × (20+4)
= 390830.4 watt
OR
P = 390.8×10³KW answer.
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