Temperature reduction in shaded versus unshaded area under the Sun
Temperature reduction in shaded versus unshaded area under the Sun
(OP)
The Steam for humidification of supply air is injected in the supply Air Duct by a standalone humidifier at the Roof that is open to the Sun.
The maximum ambient temperature for the electronic controls of this humidifier as specified by the manufacturer is 40C.
The ambient temperature at the location actually goes to above 52 degrees centigrade, therefore this humidifier must be housed in a shaded portion to bring down the temperature.
Would it be sufficient to simply enclose this humidifier in a non air conditioned but louvered steel enclosure as the means for reducing the temperature from 50 degrees to 40 degrees, or must some air conditioning be provided to bring the ambient temperature down? Would an insulation lining in the weather box (but without any air-conditioning or forced ventilation) be sufficient?
The maximum ambient temperature for the electronic controls of this humidifier as specified by the manufacturer is 40C.
The ambient temperature at the location actually goes to above 52 degrees centigrade, therefore this humidifier must be housed in a shaded portion to bring down the temperature.
Would it be sufficient to simply enclose this humidifier in a non air conditioned but louvered steel enclosure as the means for reducing the temperature from 50 degrees to 40 degrees, or must some air conditioning be provided to bring the ambient temperature down? Would an insulation lining in the weather box (but without any air-conditioning or forced ventilation) be sufficient?





RE: Temperature reduction in shaded versus unshaded area under the Sun
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RE: Temperature reduction in shaded versus unshaded area under the Sun
The concern is about the electronic control circuitry portion of the humdifier which should not be in more than 40 degrees temperature.
I am not sure whether putting the controls inside this metal enclosure alone will bring the outside air temperature to the required 40 degrees C or not.
RE: Temperature reduction in shaded versus unshaded area under the Sun
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RE: Temperature reduction in shaded versus unshaded area under the Sun
RE: Temperature reduction in shaded versus unshaded area under the Sun
They're trying to say that your box temperature cannot fall below 52°C if the temperature outside is 52°C, unless you put an air conditioner in it. Shade does not help.
Good on ya,
Goober Dave
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RE: Temperature reduction in shaded versus unshaded area under the Sun
RE: Temperature reduction in shaded versus unshaded area under the Sun
Is this for school?
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Chinese prisoner wins Nobel Peace Prize
RE: Temperature reduction in shaded versus unshaded area under the Sun
: existing or present on all sides : encompassing
RE: Temperature reduction in shaded versus unshaded area under the Sun
I had to deal with a similar issue with variable speed drives on the roof exposed to the sun that were tripping out on high temperature days.Shielding with scraps of ducwork were tried and did not work.We ended up relocating them indoor.
Though the metal enclosure may cut out the radiant component for a while,it will get heated up above ambient in a while and will start radiating to the protected body as well probably worsening your situation.Maybe a black umbrella might work!
RE: Temperature reduction in shaded versus unshaded area under the Sun
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Chinese prisoner wins Nobel Peace Prize
RE: Temperature reduction in shaded versus unshaded area under the Sun
Good basic heat tranfer lessons to be learned. I suggest that solidspaces study them thoroughly.
Good on ya,
Goober Dave
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RE: Temperature reduction in shaded versus unshaded area under the Sun
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Chinese prisoner wins Nobel Peace Prize
RE: Temperature reduction in shaded versus unshaded area under the Sun
RE: Temperature reduction in shaded versus unshaded area under the Sun
RE: Temperature reduction in shaded versus unshaded area under the Sun
"
OK, try again
> No. Shade will help keep the box temperature from EXCEEDING 52°C
> Yes. You have air at 52°C. You need AC to get down to 40°C
> That will make it infinitely worse. The objective, to reiterate, is to reject heat from the electronics into an ambient of no greater than 40°C. Insulation increases the thermal resistance.
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RE: Temperature reduction in shaded versus unshaded area under the Sun
RE: Temperature reduction in shaded versus unshaded area under the Sun
- did you talk with manufucturer?
- use two termometers, one under the sun the other in sahded area and check the difference
- you said your box will be louvered, will you use a fan too or just two louvers?
- if maufucturer limit is 40C then you may be have choosen the wrong product,this product may be for in house use only.
RE: Temperature reduction in shaded versus unshaded area under the Sun
Thanks a lot to all who responded
RE: Temperature reduction in shaded versus unshaded area under the Sun
Therefore proving a simple shading structure may not reduce the temperature below the ambient temperature of 52 degrees but will prevent the equipment from heating up above 52 degrees which is what would happen if is was not shaded and located in direct sunlight.
RE: Temperature reduction in shaded versus unshaded area under the Sun