Albuquerque evening herald. [volume] (Albuquerque, New Mexico) 1911-1914, 1912-01-15

other For example the pump capac-
iity should depend upon the water sup
Iply; Ia other words Il Is a waste of
money to purchase a pump so large
! that II Is Impossible TO get water sui
! iicient 20 supply the rated capacity OF
I the pump This is a common mistake
and Is due 10 improper initial invesu'
cation regarding the water supply.
Again, the engine horsepower (act-
uaJ should be based upon the dis
charge desired and the lift. Likewise,
the size OF the piping should be such
as 20 limit the lost head" due 90 fric-
ton, elbows and the energy OR dis.
charge
/ wish now TO take up specific
case and discusse the cost OF insialla-
ton and give little Hight on the cost
OF raising water per acre-foot. Take
the one / mentioned earlier In my ad.
dress--that OF irrlgating alfalfa.
stated that II takes between 40 and
as inches OF water 20 mature cops
In the Mesilla valley and also stated
that !, 100 gallons OF water per minute
would be required for this purpose aH-
Stunning about l40-aere tracts, u
takes from seven 20 eight gallons per
minute per acre for alfalfa In the
Mesilla valley water can be obtained
al a depth OF 10 feet With q draw
down of 20 feet we would then have
head OF 80 feet 10 pump against.
not including Losses by friction. etc.
A number six low pressure, single
stage, vertical centrifugal pump Will
handle this very nicely and will cos,
about $3.50 20 si7b. II Il Is possible 10
haH hal
about three days pumping a number
live centrifugal pump OF the same
type may be used at saving OF the
initial cost A number i've centri-
rugal pump costs Si25 and viii de-
liver $50 gallons per minute when
run az the speed indicated by the
manufacturers To raise 100 gallons
per minute through 30 feet would re-
quire a 22 horsepower engine costing
about 5000
To raise $50 gallons per minute
through the same height would re-
qulre "a i6-horsc power gasoline en-
CINE costing about $500. These fig
ures are based on "a pump efficiency
OF so per cent and transmission o.
93 per cent, These efficiencies are
conservative. although manufacturers
guarantee higher Those given above
have been found, however, 90 be a
good average. II has been found by
experience that an 5 inch casing IS
about the most economical size Tor
the average pumping plant. This cas-
ing weighs about 2s pounds per foot
and the cost Of putting down well,
including the casing, amounts TO
about SO per foot. Larger castings
| than the S-inch are used but there h.
/ "a question as 60 whether Il q an
economy 60 fnllw such practice, az
the increased strainer area possible
with 40 or l2-inch casing Is scarcely
balanced by tho greater difficulty OF
handling the larger casing and the
increased difficulty IA sinking it. The
strainer area necessary may boz OBJ
tanned quite easily with either the
g OF S-inch casing by using a longer
strainer. and this h iustlflahle. since
the greater number OF water-bearing
strata cut across the greater the
Yield OF water viii H.
The question has often been asked,
/ what lH the cost OF lifting water per
acre f0otg And I wish at this time
to give some idon OF this matter We
viii revert again 10 the Irrigation Of
alfalfa, using flow OF ice gallons,