Project Summary: Radiantec Office Building and Warehouse, St. Johnsbury, VT

This page provides information about solar thermal technology at the Radiantec Office Building and Warehouse. View the full list of Commercial Solar Thermal Projects.

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Project Name Radiantec Office Building and Warehouse
Owner/Operator Robert J. Starr
City/County St. Johnsbury
State Vermont
Date Operational October 2009
Application Space heating
Building Type Office
Building or Application Size 12,000 ft2
Collector Type Flat-plate
Collector Area 768 ft2
Collector Manufacturer Alternate Energy Technologies (AET)
Storage System Type Other
Storage Size 12,000 other
Auxiliary Fuel Propane
System Installation Contractor Ruggco Construction
Contractor Contact Larry Ruggles
Brief Project Description

This solar space heating project uses a large storage mass below the slab. Pex tubing was installed in a 6" flowable fill slab which sits below a 6" concrete slab with another set of tubes (for backup if used). Any time solar energy is available, it is actively gathered and sent into the storage mass for passive discharge.

This allows for high collector efficiency because of the low temperature operation and the lack of heat exchangers.

In the harsh Northern Vermont climate, 500 gallons of propane was used between October 2009 and May 2010 for a 12,000 sq. ft. building.

For More Information Radiantec Web site, Rodale's New Shelter Magazine
Project Contact Kevin Ingalls