[MakeLV] Make Leigh Valley Digest Subject: Fans

[Rob Roschewsk]

Now that you mention Allentown ..... I'm thinking we bill this as some
sort of "GREEN INITIATIVE" .... hell the local power company may even
give us a grant .... think about the electric savings ....

On Fri, Jun 22, 2012 at 2:58 PM, Josiah Ritchie
<josiah at josiahritchie.com> wrote:
> Oh, there is a stream, but it is a good distance. We'd certainly need
> some impressive pumps to get the water up the hill and lots of tubing
> and insulation between the river and the building. Might also need to
> check with Allentown and there is a park on the other side so
> maintenance might be an issue.
>
> JSR/
>
> On Fri, Jun 22, 2012 at 10:45 AM, Rob Roschewsk <rob at pabut.org> wrote:
>> Exactly ..... now if there was a swimming pool or stream nearby we
>> could circulate that water ...... you would need to make up for the
>> temperature difference in the water (stream water about 60F vs. ice
>> water about 40F) with more efficient radiator .... just a simple coil
>> wouldn't cut it ....
>>
>> But I think we're getting there ..... :)
>>
>> On Fri, Jun 22, 2012 at 2:39 PM, Josiah Ritchie
>> <josiah at josiahritchie.com> wrote:
>>> Yeah, scale was the biggest problem mentioned at the meeting last night.
>>>
>>> This is more like geothermal stuff than it is like a swamp cooler or a
>>> traditional A/C unit. The heat being put into the coil is then put
>>> into evening out the room and the ice in the cooler. In other words,
>>> transferring heat from one location to another using the liquid in the
>>> pipe. In my mind, the biggest problem of scale is keeping enough ice
>>> around to keep it operating on the hackerspace to a point of
>>> usefulness. This doesn't matter as much if you're just trying to cool
>>> your bathroom I guess. Basically the cooler is operating like the
>>> ground in a geothermal system. It's just a lot colder so long as you
>>> keep ice in it.
>>>
>>> JSR/
>>>
>>> On Fri, Jun 22, 2012 at 10:17 AM, Rob Roschewsk <rob at pabut.org> wrote:
>>>> Agree ... with what you're saying 100% ...
>>>>
>>>> http://www.fiscalgeek.com/2009/07/homemade-air-conditione/
>>>>
>>>> but I don't think this is a "swamp cooler" in that it's not using the
>>>> evaporation of water to reduce the temperature ...... it's passing
>>>> chilled water through a coil which air is moving over ... so in fact
>>>> it should cause humidity to condense .....
>>>>
>>>> Problems I see are those of scale ..... water cold enough ..... water
>>>> supply large enough ..... need more cow bell !!!!
>>>>
>>>> On Fri, Jun 22, 2012 at 2:03 PM,  <rsjames at ix.netcom.com> wrote:
>>>>> Ever wonder why it is called "air conditioning" instead of "air cooling"?  A
>>>>> key element of air conditioning is the removal of humidity from the
>>>>> air.  That has as much to do with comfort as lowering the temp.  For those
>>>>> of you old enough to remember cars from say, the 70's and earlier, the
>>>>> defrosters never worked really well.  They just blew warm, moist air on the
>>>>> windshields.  In modern cars, when you put the defroster on, it also turns
>>>>> on the A/C.  This pulls the humidity out really fast, and the widows (all
>>>>> the windows) clear up in seconds, rather than minutes.  Swamp coolers work
>>>>> well in places with low humidity.  They don't work if the humidity is high.
>>>>> Let's say you are in a room that is 80 degrees with a relative humidty of
>>>>> 85%.  This is pretty warm, but bearable.  With the breeze from a fan,
>>>>> you probably would not mind it.  Then you run your in-room swamp cooler and
>>>>> knock the temperature down by 5 degrees, to 75, without removing
>>>>> the moisture.  Now the relative humidity about 100%.  You will feel very
>>>>> damp.  And you might even have fog!  This is not comfortable, and not good
>>>>> for equipment.
>>>>>
>>>>>
>>>>>
>>>>> Bob James
>>>>>
>>>>>
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>>>>
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>>>
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>>> http://about.me/josiah
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>
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