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  1. #1
    Join Date
    Jun 2010
    Location
    Virginia Beach, Virginia
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    4

    Cool What do you think about Evaporative Cooling?

    Pretty simplistic question here. What do you think about evaporative cooling (aka swamp cooling) as a whole?

    Would you consider evaporative cooling over other cooling products? Or is there another type of cooling product that you overall prefer?

    thanks for anyone who responds!

  2. #2
    Join Date
    Nov 2005
    Location
    India
    Posts
    46
    For evaporative cooling to be effective you need wet bulb depression i.e. difference between dry bulb temperature and wet bulb temperature . Higher the difference(wet bulb depression evaporative cooling (adiabatic cooling ) will be effective.

    Where the ambient is having Low relative humidity the evaporative cooling is better and economical. The Indoor air quality is also good as the evaporative cooling is 100 % Fresh air system.

  3. #3
    Join Date
    Nov 2005
    Location
    India
    Posts
    46
    Limitations of evaporative cooling are it cannot be used where the relative humidity level is high like in most of the coastal towns.

  4. #4
    Join Date
    Jun 2010
    Location
    Philadelphia PA
    Posts
    2,190
    Actually. in the super commercial world, the lower temps of evaporative cooling are being used with the latest generation of ERVs like Munters Pretty clever stuff

  5. #5
    Join Date
    Apr 2007
    Location
    Kaufman county, Texas
    Posts
    10,082
    Quote Originally Posted by CoolerNowJustin View Post
    Pretty simplistic question here. What do you think about evaporative cooling (aka swamp cooling) as a whole?

    Would you consider evaporative cooling over other cooling products? Or is there another type of cooling product that you overall prefer?

    thanks for anyone who responds!
    I grew up with it. It works. Even in high humidity, you just need to be in the air flow and the temps are cooler anyway with rain/clouds.

    Not good for books over a long period of time. Pages turn yellow.
    "You boys are really making this thing harder than it has to be". Me

    "Who ARE you people? And WHAT are you doing in my SWAMP!?" Shrek

    Service calls submitted after 3PM will be posted the next business day.

    I give free estimates [Wild Ass Guesses] over the phone.

    "I am sorry for interrupting, please continue with your quarreling" Some chick on TV

  6. #6
    Join Date
    Apr 2010
    Location
    Arizona
    Posts
    192
    I hate it! Swamp coolers will make all fabrics smell musty and moldy after time, bugs will be attracted to the cool damp humidity of your house, coolers on the roof are a real bad idea since leaks and tinkering are constant problems, dirt getting into the pads has to be cleaned out regularly and your water bill is going up up up!

    You also have to leave your doors and windows open to let the humidity out meaning you cannot leave your house or you're subject to burglary. Any strenous activity leaves you sweating and when it feels like bugs are crawling all over while sitting on your sofa watching TV, they are! They're call dust mites and the only way to get rid of them is to get AC and run it until your house is cold and dehumidified!

    Not to mention that continous swamp cooler use will permeate gypsum wallboard and weaken it making ceiling sag and your paint job hard to redo when the moisture drives insects like termites into the paper used in gypsum wallboard.

    I think they work great for outside spot cooling where AC is not practical.
    I would remind you that extremism in the defense of liberty is no vice! And let me remind you also that moderation in the pursuit of justice is no virtue!

    The late and greatest ever, Senator Barry Goldwater

  7. #7
    Join Date
    Jan 2007
    Location
    Milwaukee Wisconsin
    Posts
    984
    Personally I think they are disgusting because who knows what is growing in that water?

    The ones I've seen have not been treated (I even walked away from a few or returned later after bleaching it out).

  8. #8
    Join Date
    Jan 2010
    Location
    Oklahoma City
    Posts
    170
    They work well in very dry areas. I have seen them work in El Paso Texas and in the dry SouthWest. They used to work in Oklahoma and I remember them growing up. After the dust bowl the government started to pay for putting lakes and ponds on farmers land. The humidity in the state doubled as the surface acres of water did the same. Now they are not effective.

    Lol I remember puring water on the pads at grandma's house when the pump went out.

  9. #9
    Join Date
    Apr 2007
    Location
    Kaufman county, Texas
    Posts
    10,082
    Quote Originally Posted by mrbenz7 View Post
    I hate it! Swamp coolers will make all fabrics smell musty and moldy after time, bugs will be attracted to the cool damp humidity of your house, coolers on the roof are a real bad idea since leaks and tinkering are constant problems, dirt getting into the pads has to be cleaned out regularly and your water bill is going up up up!

    You also have to leave your doors and windows open to let the humidity out meaning you cannot leave your house or you're subject to burglary. Any strenous activity leaves you sweating and when it feels like bugs are crawling all over while sitting on your sofa watching TV, they are! They're call dust mites and the only way to get rid of them is to get AC and run it until your house is cold and dehumidified!

    Not to mention that continous swamp cooler use will permeate gypsum wallboard and weaken it making ceiling sag and your paint job hard to redo when the moisture drives insects like termites into the paper used in gypsum wallboard.

    I think they work great for outside spot cooling where AC is not practical.
    I don't disagree with anything you just said.

    I think they are perfect for a screened in porch, garage, or workshop.

    Important point made: those things move lots of air, so the air has to have an exit point to work. Location is important in order to manipulate the air stream.

    My grandparents did not even have keys to the doors, lost years and years ago. My, how times have changed. And I was in the habit of shaking my boots out before putting them on. I am not sure the latter had anything to do with the water cooler though.
    "You boys are really making this thing harder than it has to be". Me

    "Who ARE you people? And WHAT are you doing in my SWAMP!?" Shrek

    Service calls submitted after 3PM will be posted the next business day.

    I give free estimates [Wild Ass Guesses] over the phone.

    "I am sorry for interrupting, please continue with your quarreling" Some chick on TV

  10. #10
    Join Date
    Jun 2010
    Location
    Colorado
    Posts
    34
    I used to take care of a couple schools here in Colorado that had big ol' swampers on the roof. They were pretty effective for the most part. The occasional days when the humidity would creep up were always a problem. And when some of the schools switched to a year-round schedule, they weren't nearly as effective with the high summer temps.

    I can't remember now how much cooling we could get out of them... maybe around 20 degrees?

  11. #11
    Join Date
    Jun 2010
    Location
    Virginia Beach, Virginia
    Posts
    4
    Wow some wonderful replies! Thanks everyone

    P.S. I would also like to say that I have found some wonderful reviews about the Evaporative Coolers at a website called CoolerNow (hence my name) it's actually the website that referred me to HVAC-TALK.com You can find it at
    Last edited by beenthere; 07-11-2010 at 08:49 AM. Reason: Removed direct purchase site link

  12. #12
    Join Date
    Nov 2000
    Location
    Eastern PA
    Posts
    68,944
    I recently read in ACHRNews about a new type of evaporative air conditioner that uses a desiccant to enhance it's effectiveness. It's called a DEVap and claims to solve the problem of needing to be in a dry climate by; "relying on the desiccants' capacity to create dry air using heat and evaporative coolers' capactiy to take dry air and make cold air."
    Government is a disease...
    ...masquerading as its own cure…
    Ecclesiastes 10:2 NIV


  13. #13
    Join Date
    Aug 2007
    Location
    Reading, Pa.
    Posts
    456
    I think Evaporative cooling is a life saver! ( not the application your thinking)
    I carry a 1 qt spray bottle with me during the really hot days and spray myself (head,face,arms,and such) while on a 12 F roof fixing someone else's
    A/C and it helps make it alittle more bearable.



    Just my 2 cent's ( It's been in the upeer 90's and 100's the last week here in Pa.)
    We the willing, led by the unknowing, for the ungratefull, have done so much for so long with so little, we are now qualified to do anything with nothing.

    Refrigeration is all the same weather your making Ice, refrigerating or freezing the product.

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