HomeMy WebLinkAboutThe Lucknow Sentinel, 1986-01-22, Page 3Heating efficiency addressed
By Ron Fleming
Agricultural Enginer for Huron County
How much does it cost to heat your
livestock barn?
Most barns housing calves, pigs, broiler
hens and a few other types of livestock
need supplemental heat through at least
part' of the winter. Why? The animals give
off moisture as they., breathe, The moisture -
has to be removed by ventilation. But, the
ventilation removes heat as well as
moisture. Animals produce some heat, but
they sometimes can't produce enough to
make up what is removed by ventilation.
This is especially true of small animals. In
a well -insulated building ventilated at
"correct" ratbs, about 3/4 of the heat loss is
throue the fans and only 1/4 is through the
walls, ceiling, etc. _.
The problem often seen in farm visits is
that the buildings are, often ventilated at
rates greater than necessary. When this
happens, .a surprising amount of heat is
lost. It has to be made up somehow in order
to maintain a certain room temperature.-
This
emperature.-This leads to high heating costs. The trick
is getting the fans set up to exhaust the
"correct .rate. In winter, the main function
of the fans is to reduce moisture. The
relative humidity should be in the range 60
to 75%. This can be measured fairly
accurately and cheaply with a household
hygrometer or with a more sophisticated
sling psychrometer (some versions cost $30
or less). I've been in barns where the RH
was less than 50%. The farmer was
spending two or three times what he
needed to on supplemental heat.
Usually one or more of four solutions will
reduce heating costs without adversely
affecting the animals.
1. Improve the air circulation. Sometimes
unsaturated air is exhausted while there
may be some very humid, dead air pockets
in the room.
2. Size the fans correctly. This usually ties
in with step three.
3. Improve the controls on the heating
ventilation system. The thermostats built
into the 4800 watt electric heaters aren't
very accurate. We often see a vicious cycle
the heater tries to heat the air and as the
air warms up, more exhaust fans come on.
This lowers the temperature, making the
heater work more. There is a fine line when
it comes to setting this to work efficiently
using thermostats. It's worth it to spend
$50 on a better thermostat for the heater,
or to spend a bit more fora heating
interlocking relay.
4. Insulate the building or check the
condition of existing insulation. Even
ensuring that the ceiling in a two-storey
barn is covered with two feet of straw will
help considerably.
These are some of the obvious measures.
Sometimes more subtle changes are
needed. Heat isn't cheap and the payback
period' on some of these measures can
make there very attractive.
Libera1' to hold hearings
Maurice Foster, M.P. for Algoma Riding.
and federal Liberal caucus spokesman for
agriculture, said recently that 'a series of 10
public hearings will be held throughout On-
tario during the week of January27,
One of these meetings of the National
Liberal Task Force :on Agriculture is plann-
ed for Wingham Legion Hall on Victoria
Street, West on Thursday, January 30 from
9:30 a.m. until noon. Persons or organiza-
tions wishing to make a presentation should
contact Bruce McDonald at (519)367-2297 or
367-5666.
`,`Our Task Force held a series of very suc-
cessful . meetings in the four Western ,pro -
vices :during November/iepresentations
made to the Task Force by, approximately
100 witnesses will help our caucusmembers
in the House of Commons, as, well as con-
tribute valuable insight to our policy
building process", said Dr. Foster.
"We look forward to this series of very
helpful meetings throughout Ontario".
Lucknow
Sentinel, Wednesday, January 22, 1986—pagc 3
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PRESBYTERIAN CHURCH
SUNDAY, JANUARY 26
Worship Service 11:00 a.m.
Sunday School 9:45 a.m.
REV. ALLISON J. RAMSAY, MINISTER
Nursery Downstairs
For little Ones Under Four
EVERYONE W ELCOME
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SUNDAY, JANUARY 26
Sunday School 9:45 a.m.
Worship Service 11:00 a.m.
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Nursery and junior congregation provided
EVERYONE WELCOME
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10 a.m. and 2:30 p.m.
Nursery downstairs morning & evening
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