Abstract:
With the increase in population centered around
cities and improvement in living standard, there has
been a considerable upsurging in the consumption of
water, which necessarily calls for extension of facilities
for its treatment and distribution.
On the other hand, facilities are required for control
of floods which occur in heavy rains, for supply of
industrial water which is indispensable for expanding
industry, as well as for discharge of waste water from
plants and treatment of such water. No undertaking
relating to water, which is directly connected to human
life, can be achieved without pumps. Centrifugal
pumps have been used in waterworks in Korea for
drawing water from the lower reaches of rivers or
under-ground, and pressure-feeding of water to reservoirs
at higher levels. Among water pumps, the small type
centrifugal pumps enjoy a large demand being
extensively used, in the fields of agriculture, civil
engineering, chemical industry, water works, minding
and air-conditioning, and for many other industrial
purposes.