[labnetwork] Steam Humidifier system question

[Michael Khbeis]

Rick,

There are heater kits and/or boiler units that are rated for DI water.  These usually have a stainless element.  Even 1 Megaohm RO can be corrosive to other metals depending on the incoming water hardness.  I found that buying the stainless elements and running high quality/pure water is far less maintenance than cleaning the boiler from impure water deposits, so it is worth the added upfront cost.

I hope that helps.  

Sincerely,

Dr. Michael Khbeis
Associate Director
Microfabrication Facility (MFF)
University of Washington
Fluke Hall, Box 352143
(O) 206.543.5101
(C) 443.254.5192
khbeis at uw.edu



On Sep 14, 2012, at 12:19 PM, Morrison, Richard H., Jr. wrote:

> Hi All,
>  
> Facilities at my labs want to run 18megohm to a boiler for humidity control in another lab. I think it should be RO water as 18Megohm water is very corrosive. Any thoughts on this?
>  
> Their suggested design would draw 0.5gmp from my supply loop and return it to the DI tank? My belief is that this return water would be contaminated by the boiler system. What do you guys think?
>  
> Rick
>  
>  
>  
> Draper Laboratory
> Group Leader Microfabrication Operations
> 555 Technology Square
> Cambridge Ma, 02139-3563
>  
> www.draper.com
> rmorrison at draper.com
> W 617-258-3420
> C 508-930-3461
>  
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