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			<title>Green Building Forum - Removing moisture in air</title>
			<lastBuildDate>Thu, 30 Apr 2026 16:16:04 +0100</lastBuildDate>
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		<title>Removing moisture in air</title>
		<link>https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=904&amp;Focus=9832#Comment_9832</link>
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		<pubDate>Sat, 24 Nov 2007 17:26:15 +0000</pubDate>
		<author>thumpin206</author>
		<description>
			<![CDATA[I was wanting to know if anybody has any info on removing moisture from the air from an earth duct system.  <br />We do not want to use air dryer. We want to use a natural process.  Someone has mentioned<br />waterfalls.  The calcium in the water actually draws moisture to the waterfall.  Does anyone have<br />any info or can enlighten me on this subject.  Thanks]]>
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		<title>Removing moisture in air</title>
		<link>https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=904&amp;Focus=9902#Comment_9902</link>
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		<pubDate>Mon, 26 Nov 2007 17:38:03 +0000</pubDate>
		<author>chuckey</author>
		<description>
			<![CDATA[I was taught at school that a waterfall results when a stream/river falls over a precipice. Not sure how the calcium attracts water into the stream.<br />  Calcium Chloride is Hydroscopic, i.e. it removes water from the air as does common salt. The problem is how do you get the whole volume of air in contact with the chemical. It is normally only  a surface effect.<br />      Frank]]>
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		<title>Removing moisture in air</title>
		<link>https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=904&amp;Focus=9982#Comment_9982</link>
		<guid isPermaLink="false">https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=904&amp;Focus=9982#Comment_9982</guid>
		<pubDate>Wed, 28 Nov 2007 15:25:39 +0000</pubDate>
		<author>pauljaquin</author>
		<description>
			<![CDATA[If you use an earth wall or block of earth or similar, that will act to even out the relative humidity between the inside and the outside of the building. I don't know what an earth duct system is, but you can definitely use unstabilised earth (bricks or rammed earth) to change the internal relative humidity of a space, which is really what you are trying to do. Contact me if you want more details about how the process works.<br /><br />Paul]]>
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