Study.
An Experiment with
Solar powered Hive Ventilator in Southeastern Pennsylvania
The western suburbs of the
Fall honey flows have
occurred, but rare and unusual events. Intense development of the area has
eliminated most of the formerly abundant wild aster and goldenrod. The same
homeowners that didn?t want dandelions in the spring don?t want goldenrod in
the fall.
In this environment, an attempt
was made to evaluate the usefulness and efficiency of the solar powered hive
ventilator. This devise utilizes the suns rays to power a small exhaust fan
located in a wooden container the same length and with of a standard supper,
above the extracting surplus, to generate an air flow from the bottom board up
through the brood chamber and extracting supers out the top of the hive. A
thermostat wired between fan and the solar powered generator permits the
operation of the fan only after the temperature in the hive reaches a
predetermined point.
The purpose of the air
movement is to speed the curing of the
nectar, to reduce the excess
humidity in the hive occurring as a result of the curing of the nectar and
to reduce or eliminate the necessity of
the fanning actions of the bees. Fanning
consumes stores and shortens the nectar gathering ability of the worker bee.
To conduct the test, two
hives of approximately equal weight and strength were selected and mounted on
two platform scales. For the daily readings, which were always taken after
dark, the weight of wooden walls, stores and bees and zeroed out and only the
net daily increase was recorded. Each hive had been started one year previously
form 3 pound packages with Italian queens from Drew Apiaries. Each hive had
produced a surplus of approximately sixty pounds the previous season. There was
no indication of supercedure or swarming previously.
The plan of the experiment
was to place the solar ventilator on one hive (Hive Number One) for a period of
three weeks, then remove it and place on Hive Number Two for the following
three weeks. This rotation was then continued for the balance of the season for
approximately five months, or May through September. The purpose of the
rotation was to cancel out any variation that might exist in the productivity
of the two populations.
The results of the experiment
for the 1996 season are illustrated in tabular and graphic attachments.
Generally the test results showed a 22% increase in hive weight for the hives
with the ventilation in place. Most of the increase occurred during the height
of the main honey flow. Both hives produced a surplus of 75pounds. With the
ventilator in place the hive weight was 205 pounds, ah increase of 37 pounds,
or 22 per cent over the entire season. However, for the period May 13th
through June 21st, were 203 and 158, an increase of 45 pounds or
24.5%.
From this very small sample
test of one ventilator, a tentative conclusion follows that the device pays for itself over a three
year period through greater honey production and hive is healthier and dryer
during the season. This last feature may contribute to a reduction in hive
winter losses.
The solar ventilator was
removed in October and stored indoors for the winter. Both hives which were
treated with Apistan and Terra, brood survived the mild 1996-1997 winter in
good shape and will participate in a continuing experiment using four solar
ventilators and eight hives for the 1997 season.
????????????????????????
I have no interest, financial or otherwise, in the Bee
Cool ? Solar Powered Hive Ventilator Company, other than the use of their
equipment which purchased.
Wlater G. Arader Radnor PA.
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Chalkbrood will flourish in
humid conditions. (full transcript)
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Inventers Comments:
I welcome any organization
that would like to do further testing with Bee Cool Ventilators, that use good
testing measures like above. (Just contact us at beecool@gmavt.net)
Gary Stearns
Note - Since
these studies Bee Cool Ventilator has improved dramatically with reports of up
to 50% increase with stronger than ever hives.?
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Study.
Author: Gregory Eurich,
Subject: Hive With Bee Cool VS. Hive Without
Hive (A) With Bee Cool Prototype,
Hive (B) Conventional Hive.
5-16-95 (May) Weights A=130lbs. B= 75lbs.
Bees were installed and were
placed on scales to record weight changes.
Hives were in a row facing
south with the hive with out the Bee Cool on the east side. Feeding sugar water
and reduced entrance with grass.
The hive with Bee Cool maybe
off for a base weight ? it is my feeling that changes positive and negative
will show up accurately.
5-22-95 Weights A=133lbs. B-86lbs.
Located Queen in both hives.
Egg laying is going well in both?low food storage?purchased 10lbs of sugar and
fed both hives.
Used a 1:1 ratio of water and
sugar by volume.
6-2-95 Weights A=155lbs. B=110lbs.
6-16-95 Weights A=185. B=135.
Both hives doing well.
6-23-95 Weights A=200lbs. B=140lbs.
Fan wasn?t working on Bee
Cool hive, was able to start again.
6-26-95 Weights A=220lbs. B=150lbs.
Fan not operational?called
6-29-95 Weights A=245lbs. B=175lbs.?
Fan working,
6-30-95 Weights A=250. B=185lbs.
Added a shallow super to each
hive?
The two deep supers of the
brood chambers have way to much honey in them?queen must feel crowded?laying is
restricted.
Both queens still have good
laying patterns and seem to be equal in vigor.
No clustering at either hive.
7-5-95 Weights A=260lbs. B=190lbs.
Bee Cool working great
No clustering on either hive.
7-11-95 Weights A=270lbs. B=200lbs.
Bee Cool working great but
bees bring in nectar at a slower rate.
7-19-95 Weights A=290lbs. B=230lbs.
Added a shallow super to each
hive-bees were upset today, may have been to cloudy. Weights before adding
supers were A-280lbs B-210lbs.
8-17-95 Weights A=310lbs. B=275lbs.
Added a shallow super to each
hive.
Bee Cool Ventilator working
great.
The hive with Bee Cool and
the conventional hive are dropping in weight. This is normal for this area
between summer and fall flow.
Note ? the weight with the
additional super body equals the total weight of 8-2-95. Found both queens,
they are both laying well.
8-30-95 Weights A=300lbs. B=265lbs.
9-13-95 Weights A=345lbs. B=315lbs.
9-26-95 Weights A=350lbs. B=325lbs.
Honey was taken off on this
date?three shallows on the hive with Bee Cool contained honey?two shallows on
the hive without the Bee Cool contained honey.
At the time I took the honey
off the hive with Bee Cool seemed to have increased bee activity and vigor.
The remaining weight of the
two hives was equal?weighing the two deeps and one shallow super of each hive
they weighed in at 200 lbs. each.
Gregory P. Euric?Manager
HRC-UVM 10-2-95?
Honey from each hive was kept
separate and extracted?caps drained and the total weight for each hive was
calculated. The hive with the Bee Cool
(A) had 83lbs in the three shallow supers while the two shallows from the conventional hive (B) had 63lbs of honey.
Because there was an increase
in honey yield in the Bee Cool equipped hive it seems as though this devise
does have a positive effect on honey production. To be more conclusive there
would have to be multiple identical hives managed for several years.
Note-As of
7-28-97 (2 years latter) the Bee
Cool is operating well in the field
with no maintenance. With no swarming.
The past two years I have left the Bee Cool on during the winter with no problems in its operation.?
Summary of Study:
Reg. Hive 63Lbs.
Bee Cool Hive 83lbs.
32% increase, No swarming,
Strong hive, Queen Lays strong, Operating well.? ??????
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Author:
Fred F. Fulton
?Installation of the
ventilators was on two single brood hives.
Compared to eleven similar
adjacent hives, honey production was 33% greater, with 3 shallow supers versus
4 with the Bee Cool ventilators after 5 ? months of use. The solar panels and
fans worked fine on sunny day, as advertised. No manipulation of the solar
panels was necessary after attaching it to the adjusting brackets. No propolis
was deposited on the ventilators. No bees were lost due to swarming or disease.?
Fred
F. Fulton October 3, 1997
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Note - Would like to welcome researchers, areas that need to
be studied are the effects that Bee Cool Ventilator has on mites and the hive
beetle. Also to continue honey increase results and on the latest AC unit that
runs 24/7. Also if you have any other studies on ventilation, we would like to
post them on this web site Contact us at beecool@gmavt.net.