hydronic heating - book recommendation [RE-wrenches]

[Dean T. Newberry]

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Here's my 2 cents on that concept

The heat capacity of dry sand is .2 that of water the thermal 
conductivity is similar. I strongly recommend using the guidlines of the 
RPA and IGSHPA. I talked to a GSHP dealer in Phoenix AZ who closed down 
his AC business and bought a Postbox business because the conductivity 
and capacity of dry sand made the business model fail.  The GSHP systems 
in CA that have been tested in 200 foot bores 1 per ton, run excessive 
return water temperatures ~120 degF at peak air conditioning load 
conditions I cannot recommend using a sand box as a thermal storage 
device, and the IGSPHA guidline designs in this climate zone have 
serious problems at limit conditions too.  Fine homebuilding sells 
advertising, not houses.

Use ASHRAE handbook of fundamentals as the place to start
Use the ACCA Manual J for room by room loads.
Use the RPA Radiant Basics as a guidline for designing radiant heating 
and cooling distribution systems.
Use IGSHPA guidlines for designing ground source heat storage systems.
Use the RIMA handbook of radiant insulation to design the radiant 
insulation.

Build whatever you want for your own house.
Build what works for your customers.
Ask around your area, there are strange systems all over the place. See 
what others have done, and talk to the people who live there now and see 
how they like it.

The most comfortable systems are the radiant chilled ceiling, radiant 
heated floor homes with good radiant and conductive insulation. 
Condensation in cooling is always a concern. Use glazing appropriate for 
the climate. Use plant shading appropriate for the climate

I am using Valance convectors for heating cooling distribution, 
evaporative precooled high performance AC systems with condensing 
boilers for heating and hot water, and PV intertie on time of use 
metering, on systems I sell to my custormers.

cul  deant

Jay Peltz, Peltz Power wrote:

>I just saw in Fine Homebuilding  (  march 2004, pg 74)  a interesting option
>for solar hydronic.  It uses the solar to heat the sand under the floor
>which is then heated normally ( fossil fuel)  Sure can make for some simple
>plumbing!!
>
>jay
>
>Peltz Power
>
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-- 

 
* Cooperative Community Energy* 	*Dean T. Newberry*

430 D Street, Davis CA, 95616
Tel: 530 758-6064
Fax: 530 758-3684
Email: deant at dcn.org
Web:  CCEnergy.com       
      Talbott Solar <http://www.dcn.davis.ca.us/go/deant/>

Contr. Lic. # B-667908

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