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Search: Posts Made By: jeff5may
Forum: Solar Power 03-18-21, 01:08 PM
Replies: 56
Views: 108,843
Posted By jeff5may
I don't know why I didn't check on this thread...

I don't know why I didn't check on this thread over the years. I actually tried out a couple of experimental rigs using this principle, and they both worked.

The first setup was built in one day...
Forum: Solar Power 05-24-14, 09:19 PM
Replies: 56
Views: 108,843
Posted By jeff5may
For a test run or proof of concept, one could...

For a test run or proof of concept, one could build a "water honcho".
https://ecorenovator.org/forum/attachment.php?attachmentid=8374&stc=1&d=1537877363...
Forum: Solar Power 05-24-14, 04:40 PM
Replies: 56
Views: 108,843
Posted By jeff5may
A new thread recently popped up, introducing a...

A new thread recently popped up, introducing a new concept for indirect evaporative cooling and dehumidification of buildings:
...
Forum: Solar Power 11-20-13, 02:19 PM
Replies: 56
Views: 108,843
Posted By jeff5may
The above example is a plug-and-play, off-the...

The above example is a plug-and-play, off-the shelf example of a dessicant-wheel-powered dehumidifier. From the specs, it is said that the heater used to regenerate the wheel uses 200W, 400W, 600W on...
Forum: Solar Power 11-17-13, 04:57 PM
Replies: 56
Views: 108,843
Posted By jeff5may
AC, The petroleum industry actually uses...

AC,

The petroleum industry actually uses CaCl2 to dry their wet streams of gas, most probably because it is much cheaper and abundant than zeolite. It would be dead simple to rig up an inexpensive...
Forum: Solar Power 11-17-13, 04:10 PM
Replies: 56
Views: 108,843
Posted By jeff5may
For a more effective liquid dehumidifier, we want...

For a more effective liquid dehumidifier, we want to move the most water per btu or watt used to regenerate the dessicant. This means the regenerator should only be heated enough to drive the water...
Forum: Solar Power 11-17-13, 11:22 AM
Replies: 56
Views: 108,843
Posted By jeff5may
Check out these two charts: ...

Check out these two charts:

http://www.magnumsolvent.com/productdata/Product%20Literature/Dehydration%20and%20Acid%20Gas%20Removal/Peladow%20DG%20Calcium%20Chloride.pdf

As AC has described,...
Forum: Solar Power 11-16-13, 02:16 PM
Replies: 56
Views: 108,843
Posted By jeff5may
This is what the dehumidifier takes advantage of!...

This is what the dehumidifier takes advantage of! The affinity for water is greatest near room temps (below 86F, 30C). This is illustrated in the graph above as segments BC and B'C'. Between about...
Forum: Solar Power 11-15-13, 09:07 PM
Replies: 56
Views: 108,843
Posted By jeff5may
it seems with CaCl2, the magic number is 43%....

it seems with CaCl2, the magic number is 43%. Above 43% CaCl2, below 57% H2O, crystals appear in the solution. Above 57% H2O, the salt is fully dissolved. At room temperature.

Calcium chloride has...
Forum: Solar Power 11-15-13, 09:01 PM
Replies: 56
Views: 108,843
Posted By jeff5may
This story just keeps getting more interesting...

This story just keeps getting more interesting the deeper I look. It seems that AIL Research and the DOE/NREL/ORNL did a few proof of concept studies over the last couple of years.

First, AILR...
Forum: Solar Power 11-15-13, 06:28 PM
Replies: 56
Views: 108,843
Posted By jeff5may
A good video describing operation: ...

A good video describing operation:
http://www.advantixsystems.com/video1.php

And here it is on youtube:
http://www.youtube.com/watch?v=WNvxkXyKwGw

Another image I could just not resist to...
Forum: Solar Power 11-15-13, 05:48 PM
Replies: 56
Views: 108,843
Posted By jeff5may
MN, Just imagine something being left in the...

MN,

Just imagine something being left in the desert for a few weeks. Woodwork shrinks and warps. Plants drop their flowers or leaves. People develop dry skin and sinus infections.
When the indoor...
Forum: Solar Power 11-15-13, 01:04 PM
Replies: 56
Views: 108,843
Posted By jeff5may
kind of...

The incoming dry air stream will tend to evaporate the water out of the room: furniture, walls, plants, people, everything with moisture content. This will tend to cool the objects within the room...
Forum: Solar Power 11-13-13, 06:41 PM
Replies: 56
Views: 108,843
Posted By jeff5may
Here is a regenerator that is said to have a...

Here is a regenerator that is said to have a thermal COP of 1.0 or better when used with gas:

http://ailr.com/our-technology/two-stage-regenerator/

The cool thing about this one is that it...
Forum: Solar Power 11-13-13, 01:17 PM
Replies: 56
Views: 108,843
Posted By jeff5may
AC, I have been pondering this idea and...

AC,

I have been pondering this idea and following this thread for awhile. Both solid (silica gel cartridge) and liquid (brine solution) systems have been used in commercial applications since the...
Forum: Solar Power 11-12-13, 11:45 PM
Replies: 56
Views: 108,843
Posted By jeff5may
I found another decent website: ...

I found another decent website:

Scavenging-Air Regen (http://www.ailr.com/scavenging_air_regenerator.htm)

Follow the links scattered on the page for all the info.

A retail, residential,...
Forum: Solar Power 11-12-13, 07:32 PM
Replies: 56
Views: 108,843
Posted By jeff5may
Boz, Please google the term: Hygroscopy ...

Boz,

Please google the term: Hygroscopy

Nature is awesome!
Forum: Solar Power 11-08-13, 01:04 PM
Replies: 56
Views: 108,843
Posted By jeff5may
Peacmar, Here's an idea for you. Since you...

Peacmar,

Here's an idea for you. Since you have a high-grade heat source, you could run a regenerator basically for free. Just run the dehumidifier as a traditional evap-pad cooler, which would...
Forum: Solar Power 11-08-13, 06:51 AM
Replies: 56
Views: 108,843
Posted By jeff5may
Peacmar, It really depends on your...

Peacmar,

It really depends on your dehumidification needs and available resources. It should be fairly simple to run a liquid loop like the university did. Rig up a swamp cooler indoors and fill...
Forum: Solar Power 11-07-13, 10:37 AM
Replies: 56
Views: 108,843
Posted By jeff5may
Some manufacturers are incorporating this method...

Some manufacturers are incorporating this method of dehumidification into their heat recovery ventilators and air handlers.

They call it a dessicant wheel or an enthalpy wheel or a thermal wheel....
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