Attn: Persons Interested in Subject;
I have been asked by a family in New Zealand to publish in the US, subject book,
"Practical Water Power". The books author had over 35 years
developing the subject. His practical experience was written such that any
person interested in harnessing available water as an energy source could
determine the energy (power) available, methods for harnessing, controlling,
types of machines to use this energy, also how to build all the different parts
of the required system, (dams, flumes, pipes, even the wheels, turbines, etc.).
All of the above is presented in simple, practical language, including
calculations and required tables.
I am advising you of the availability of this publication, which can be used as
a complete reference and guidence manual for you, students and those potential
customers of a system that they plan to install.
Following is one (1) page from the book, so you can see the type of
presentation. The book cost is $15.00 each, US funds including regular US mail
shipping in the US and Canada.
Arthur C. Goldsmith
1899 Berry Road
LaFayette, NY 13084
Phone: (315) 683-5310
Chapter 1 The Basis of Water Power
The power that can be derived from water depends on three
things; the amount of fall (generally called head); the volume of water
flowing; the efficiency of the water motor.
The first can be measured quite precisely if required. The
second can be measured fairly accurately in some circumstances. The third can
only be estimated until such time as the machine is tested should that ever take
However before proceeding further let us define power and say
something about the units used to measure it.
Power is the rate of doing work and it is generally measured
in foot-pounds per second or kilogram meters per second and for
convenience this is usually translated into horse power or
Scientists talk about joules and kilojoules and megajoules and
though these units may be well suited to those frequently using them, they are
not quantities which are easy to visualize like horse power and kilowatts which
more readily relate to everyday life.
We will therefore confine our attention to horse power for
mechanical power and kilowatts for electrical power. I know there is a move to
quote all power in kilowatts and I find it most confusing and refuse to use it
for the reason that one kilowatt of mechanical power will not produce one
kilowatt of electrical power.
In Imperial measure one horse power is defined as the amount
of power given out when a weight of 550 pounds falls one foot in one second or
that which it is necessary to supply to lift 550 pounds one foot in one second
or any combination of pounds and feet which will multiply out to 550.
The metric equivalent is 75 kilogram meters per second and
though the two are not exactly equal, the difference is so small as to be of no
Theoretically one horse power equals 746 watts or near
enough to three quarters of a kilowatt. Conversely one kilowatt equals about
one and a third horse power.