New Ulm review. (New Ulm, Brown County, Minn.) 1892-1961, 1916-04-19
ENGINEER REPORTS
ON HEATING PLANT
Continued from first page.)
of the amount that would be used during
the months of the heating season as

December ......-...18 1873 per cent
January ........1 1875 per cent
February 17.2 per cent
March .--.-. LID per cent
April Ct per cent
May ....... 81 per cent
The following table will illustrate the
amount of steam to be furnished, the
losses and the amount used for each of
these months with the probable
amount of live steamand coal required
to furnish same. During the months of
December, January and February it is
unlikely that any exhaust steam will be
wasted. In the months of November
and March it is quite likely that during
two or three hours during the peak light
ing load some exhaust steam will be
wasted, but during the remainder of the
day it is expected that quantity of live
steam will be required to furnish enough
for heating purposes should the weather
be severe. From the foregoing table it
is evident that 1853, 626 lbs. of live steam
would be required for the entire heating
season (plus the exhaust) basing the
evaporation at lbs. of water per pound
OF coal as before, there would be required
apis tons of coal to furnish this steam.
During the months of November and
March at the time of peak load exhaust
steam probably will be wasted, and at
certain times when the electrical load is
light, Should the weather be cold) it will
be necessary to admit quantity of live
steam to the heating system. We have
allowed 100000 pounds of live steam for
each of these months.
The transmission losses will not be in
direct proportion to the load at all times
but will remain practically constant over
wide range of load. The table will
indicate how this will probably range.
The unavoidable losses and station losses
should be in proportion to the amount
of steam furnished and condensed. The
amount of exhaust steam as taken in the
above table is computed from the actual
coal burned (taken from station record)
Tor the months of October, November,
December, January, February, and was
estimated for the other months and are
sufficiently correct as the amount of
exhaust is in excess of the steam required
for heating. If the amount of steam
as above estimated would be used land
this amount would be required should the
amount of radiation as listed be connect
ed and used) the following will indicate
the probable income, operating expenses
and fixed charges
Income 100000 lbs. of steam
at SOC per NJ. $40, 100000
Expenses:
Fixed Charges:
Interest at per cent. ....... 81 100000
Depreciation, per cent ..... 100000
axes. ........... v
$4,000
Operating Expenses:
Fuel, 421.6 tons coal at
$3.50. Observation-Disclosures. $1,517.76
Repairs, per cent. ...... 100000
Labor (extra above present
City Engineering force, read
ing meters, inspecting, etc., =. $4,000
$2,767.76
Total Cost Of Operation ..... $4,967.76
1t is not expected that this net profit
will be realized the first year as it is
doubtful whether the amount of radiation
as estimated would be connected or in
constant use.
To the above must be added the credit
due for the water which would return
from the heating system due to the exhaust
steam condensed. From the table it
would appear that this amount would be
approximately 100000 lbs. for the
season.
Also during the six months of the year
but little boiler compound will be re-
quired as but little water (other than
that returning from the heating system)
would be used in the boilers, and the use
OF this water from heating system will
add life to the boilers as it would contain
no scale forming material.
From the above it will be readily seen
that the advantages derived from the
heating system would be:
First Increased revenue to the plant.
Second-Return of much condensed
steam to the boilers, and the desirability