[BLDG-SIM] Thermal Ice Storage using Phase Change Material

William Bahnfleth wbahnfleth at psu.edu
Thu Mar 15 09:27:58 PDT 2007


There were one or two US manufacturer of 
alternative PCMs for cool thermal storage during 
the height of the TES boom (Transphase) that are 
no longer in business.  Sounded like a great idea 
at the time, but the economics never worked 
out.  Storage density was not as good as water and cost was far greater.

The main manufacturer of such media that I am aware of today is Cristopia.

http://www.cristopia.com/

Their web site indicates, however, that they only 
offer media with 0C (water) and 27C phase change temperatures.

The 1993 ASHRAE Design Guide for Cool Thermal 
Storage (currently out of print) has a chapter on eutectic materials.

Bill Bahnfleth

At 06:51 PM 3/14/2007, John Aulbach wrote:
>Ian:
>
>As I recall, DOE-2.1E used 5 styles of Ice TES, 
>including Eutectic Salts. Not sure how TES was 
>translated into eQuest (DOE-2.2).
>
>-----Original Message-----
>From: BLDG-SIM at gard.com [mailto:BLDG-SIM at gard.com] On Behalf Of Ian Doebber
>Sent: Wednesday, March 14, 2007 1:41 PM
>To: BLDG-SIM at gard.com
>Subject: [BLDG-SIM] Thermal Ice Storage using Phase Change Material
>
>Does anyone know whether a product exists or 
>research has been done on using replacing water 
>with Phase Change Material for thermal storage 
>systems.  The phase change should have a similar 
>heat of fusion as water (314 kJ/kg) but a melting point at ~40-45°F.
>
>Thanks
>Ian
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_________________________________________________

William P. Bahnfleth, PhD, PE, FASHRAE
Professor of Architectural Engineering
Director, Indoor Environment Center

The Pennsylvania State University
104 Engineering Unit A
University Park, PA 16802 USA

voice: 814.863.2076 / fax: 814.863.4789
e-mail:  wbahnfleth at psu.edu
www.arche.psu.edu/faculty/WBahnfleth/
http://www.engr.psu.edu/ae/iec/
_________________________________________________


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