Date: Sat, 30 Jul 2011 06:56:10 -0700
Reply-To: Rocket J Squirrel <camping.elliott@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Rocket J Squirrel <camping.elliott@GMAIL.COM>
Subject: Re: [NVC] Create electricity-free cooler
In-Reply-To: <6868A4FA-941A-45FF-BD5C-B1236B530B8D@shaw.ca>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Right, that's self-evident. Evap coolers, whether in the form of a
couple-a terra cotta pots or in the form of swamp coolers, are a good
choice in your arid areas, but not so much in your humid areas.
McNeely must-a thought I was posting the link because I thought the
setup was a one-size-fits-all thing, or haven't been around much to not
know how evap coolers work.
I posted it because I'd never seen anyone build an evap cooler so
simply. And instead of writing,
"Assuming that one needs a way to cool something down, like a couple
bottle of wine, doesn't have an ice chest or refrigerator, but does have
two terra-cotta flower pots, some sand, some water, and a towel."
I guess I should-a wrote,
"Assuming that one needs a way to cool something down, like a couple
bottle of wine, doesn't have an ice chest or refrigerator, but does have
two terra-cotta flower pots, some sand, some water, a towel, AND IT'S A
DRY AND HOT DAY."
But I thought that was self-evident.
--
RJS
On 07/29/2011 06:48 PM, Alistair Bell wrote:
> it's just an evaporative cooler. You can work out the heat used and the rate of water evaporated, knowing the air temp (and water temp) and the rel. humidity.
>
> It would be more effective in hot dry climates than in hot humid climates.
>
> Neither conditions can be found this summer up here on Vancouver Island. Max temp so far has been only around 27 C.
>
> alistair
>
>
>
> On 2011-07-29, at 6:06 PM, Dave Mcneely wrote:
>
>> Nope, just asking a pertinent question. Follow up is up to you, or not. mcneely
>>
>> ---- Vanagon<camping.elliott@gmail.com> wrote:
>>> What-you're giving me a homework assignment?
>>>
>>> Sent from my smartphone with tiny screen& even tinier keypad.
>>>
>>> On Jul 29, 2011, at 5:41 PM,<mcneely4@cox.net> wrote:
>>>
>>>> Sure, it will work. Have you done any experimentation to determine just how cold this "refrigerator" will be compared to ambient, at different relative humidity values? mcneely
>>>>
>>>> ---- Rocket J Squirrel<camping.elliott@GMAIL.COM> wrote:
>>>>> Possibly of interest for camping. Assuming that one needs a way to cool
>>>>> something down, like a couple bottle of wine, doesn't have an ice chest
>>>>> or refrigerator, but does have two terra-cotta flower pots, some sand,
>>>>> some water, and a towel. A fairly unlikely scenario, sure, but hey!
>>>>> Amaze your friends!
>>>>>
>>>>> <http://lifehacker.com/5825676/create-an-electricity+free-refrigerator-with-some-flower-pots-and-sand>
>>>>>
>>>>> --
>>>>> RJS
>>>>
>>>> --
>>>> David McNeely
>>
>> --
>> David McNeely
| 
