Solar-Powered Homes Washington DC
Am Pm Emergency Service
First Class Plumbing
Atlantic Plumbing Supply Co Inc
807 V St NW
Capon Cleaning Contractors Inc
332 16th St
L Engelking Inc
Acme-National Gutter & Window Cleaning
James Vosburg Roofing Contractors
Thomas Plumbing Company
High Performance House
High Performance House
We set out to see if we could use the sun to cost-effectively do four key things:
- Heat the House (In the Winter)
- Heat the Water (Year round for all Showers, Sinks, Washing Machine, and Dishwasher )
- Cool the House (In the Summer)
- Power the House (Year round for all Lights, TVs, Appliances, and Mechanical Systems)
We developed an innovative system: SSI (Szoradi Solar Integration)
Here is how our integrated high performance system works.
1) Solar - Heating the House (In the Winter)
To heat the house in the winter, the Solar Integration system uses rooftop Solar Hot Water Panels to heat water that is then used for radiant floor coils via a 250 gallon insulated tank in the basement. All of the electrical needs for the pumps are met by a companion rooftop Photovoltaic system that generates the power for the whole house. To put the water tank size in perspective, a typical home hot water tank is 50 or 80 Gallons. On even overcast winter days, the sun heats the water in the panels up to over 100°F and in the summer the temperature can exceed 180°F. The hot water is then piped from the basement tank through radiant floor coils that are encased in 1.25” of Gyp Crete that has an additional half inch of stone tile on the upper walking surface. This radiant ‘Thermal Mass’ warms your feet and then rises through the rooms. One of the advantages of radiant over forced air heat is that the heat stays around your body rather than blowing up towards the ceiling. Szoradi Solar Integration also includes Multi-zone in-floor thermostats and Energy Star Programmable Thermostats that you can set for maximum comfort and energy savings.
One of the advantages of the combined Gyp Crete and stone tile is that ‘Thermal Mass’ holds the heat longer than wood or other materials and then releases it back into the room. So, you benefit well after the sun goes down. As well, with the proper southern orientation and the Low-E energy efficient windows the sun actually heats up the floor when the light comes through the windows. Solar Integration involves calculating the proper overhang so that the sun is well shaded during the summer from heating the house and welcomed in over the winter to warm it. As an example, at the latitude of Philadelphia, PA the angle of the sun is about 85% off of the horizon at noon in the summer but it drops down to an angle that is only about 25% off the horizon over the winter. So in this area, overhangs of 18” can effectively shade all of the direct sunlight over the summer peak hours and let all of it in over the winter peak hours. As well, super insulated walls help hold the heat inside the house. The combination of the double insulated walls and low-tech Passive Solar overhang calculations is key to Solar Integration and it is often overlooked by home builders and even many architects. An additional feature ...
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