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  1. #1
    Join Date
    Nov 2009
    Location
    Sde-Boqer, Israel
    Posts
    196

    Default Relieving the heat- is it make sense?

    Hi,
    My 30 hives are located in a desert climate
    and now it's getting hot till the peak in the end of August.

    In the last 3 years i shadowed the hives and take care
    for sufficient amount of fresh water and in spite of that,
    they seems to suffer from the high Tempratures.

    After i will take off the second honey supers, i thought to replace them with
    empty shallow super for extra space so the bees won't be too crowded
    and suffer less from the high temperatures.

    Can it be practically idea?

    Thanks,

  2. #2
    Join Date
    Jul 2011
    Location
    Crenshaw County, Alabama
    Posts
    1,999

    Default Re: Relieving the heat- is it make sense?

    I'm really curious as to everything you've done so far in reducing the solar gain. I'm in south Alabama, which isn't desert but can get in the 100+F degree range in the summer with high humidity at times. 90+F days are common. My hives are in full sun to combat small hive beetles.

    Top venting? I've cut an extra 70mm hole in my inner covers (using telescoping covers) and have the outer covers propped up about 1/2 inch.

    Bottom board? I use screened bottom boards.

    How have you shadowed your hives? I have thought of basically building some window screens with a shade cloth...and build them with a 5-inch overhang on each side. I want something that wind will somewhat pass through (so as not to become a sail). I'm also trying to figure out how to place the screen on top of the covers...if I simply lay it on top and put a brick on it then the corners of the cover may start cutting into the screen...I feel like I need something to keep it off the corners. How are you doing your shade/shadow?

    I have seen some boxes/supers made with holes cut into the sides of them and screen over the holes. Two or three good sized (an inch or two in diameter) in each side. These go on top of the hives above the inner covers and allow some good ventilation. It's your option to screen the vent holes in the inner cover...without screening the bees will keep the box cleaned of ants and other critters...screening on the inner cover *might* cut down on air flow, too. If using migratory covers I would imagine you could use the same boxes but keep a check on them for burr comb getting built...during the summer dearth I doubt that would be a big problem.

    Here's some thoughts on venting and heat with some pictures... http://www.beebehavior.com/hive_ventilation.php

    Here's a very good article on ventilation/air-flow by Dave Cushman... http://www.dave-cushman.net/bee/ventilation.html

    Here's the basic idea of the vented top box from Honey Run Apiaries... http://www.honeyrunapiaries.com/stor...ver-p-232.html

    Kol Tuv,
    Ed

  3. #3
    Join Date
    Jul 2011
    Location
    Evansville, IN
    Posts
    2,572

    Default Re: Relieving the heat- is it make sense?

    You can also use what we call shade boards -- typically these days a sheet of plywood large enough to provide a spot of shade around the hive during the hottest part of the day, maybe a meter square or so. Space it up off the top of the hive with some wood blocks and weight it down so it won't blow away. This provides considerable cooling from the shade and the air space between the hive top and shade board.

    Empty supers with holes drilled in them (large holes, 10 cm or so) above the inner cover will help along with the shade boards.

    A slatted fence to the east and west will also reduce the solar heat loading on the hives in the early morning and late evening, but if you have cold nights you should not do this.

    Peter

  4. #4
    Join Date
    Dec 2002
    Location
    Denver, Colorado
    Posts
    5,113

    Default Re: Relieving the heat- is it make sense?

    I stand by upper entrances. Shade helps as well.
    Solomon Parker, Parker Farms, ParkerFarms.biz
    11 Years Treatment-Free, ~25 Colony Baseline

  5. #5
    Join Date
    Nov 2009
    Location
    Sde-Boqer, Israel
    Posts
    196

    Default Re: Relieving the heat- is it make sense?

    Many thanks for the replies and usfull information i got hear.

    I am shading with dense polysterene cubes (the ones used for isolation when building concrete houses)
    their size is 1x1 Meter and they are deep and hollow in the middle. The problem is that they are very good
    to protect the hive top cover and not the sides or at least part of them.

    I also plant trees near and among the hives (Ecalyptuses)
    and irigate them manually .

    For the ventilation methods, i think they are great and efficient
    but i have a big problem hear with dust storms that happened every week
    and enter to every little holes all over (especially my house ), so i can't
    use it hear with screen coard or Inner Cover with an additional entrance
    for ventilation.

    As you wrote me, in the summer dearth i am not affraid from wild comb building
    and second empty super will help, so i will try it.

    Thanks alot,
    Randi

  6. #6
    Join Date
    Jul 2011
    Location
    Crenshaw County, Alabama
    Posts
    1,999

    Default Re: Relieving the heat- is it make sense?

    Wow rand, you've got a square meter of shade over the hive and it isn't good enough? That seems like it would cover the sides pretty good for the hottest time of the day. I was planning on just extending my shade frames about 5 inches/13cm on each side...I figured that would cover the hives during the hottest time of the day.

    I understand about the sand...maybe build some baffles into the ventilation holes?

    Sounds like the empty supers would be a good thing. Get them on there and you can still experiment with other ways.

    Best wishes,
    Ed

  7. #7
    Join Date
    May 2002
    Location
    San Mateo, CA
    Posts
    5,041

    Default Re: Relieving the heat- is it make sense?

    Would an empty super on top possibly make for a heat sump like an unventilated attic keeping the hive hotter? It would have to be well vented to be of help. Maybe an upside down slatted rack and bottom board on top?

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