Approaches to net zero , IOT home automation:
- selected as one of thirteen patents of 2015 by United States Patent and Trademark Office (showcased in Smithsonian American History Museum for innovation festival)
- selected by department of energy building technology as one of 32 emerging technology to market 2016
The following technology is concentrated in:
- Doing air exchange between higher elevation (heat energy) and lower elevation (cool energy) for thermal adjustment purpose. If we look at the operation of ceiling fan it exactly does this method for heating and cooling.
ceiling fan is the most efficient way per kilo watt hour . I do the same thing using clean energy such as solar and wind turbine, I put DC powered fans (powered by renewable energy like solar0 in regular ceiling and floor registers . For heating higher elevation register would blow air down while at the same time lower elevation would take the air out . for cooling the exact opposite . Thus the smartest thermostat would sense three zone at least higher elevation, lower elevation, living space (there can be one more sensor that can sense the outside air temperature for interaction with higher elevation or lower elevation air). The run time will be decided by a logic circuit that also controls the polarity on DC driven fans for rotation direction.
- Using geo thermal for heating and cooling . Ten feet Below the surface there is a constant temperature of 54 degree. Metal vent can be place 10 feet below the surface with one side above the grade outside the building envelop with DC fans to suck outside air to the vent assembly. the other side is attached to a floor register as needed (There should be a time delay for air inside the vent to become 54 degree). for cooling the required air will blow to building envelop until thermal comfort is reached . for heating the room temperature can be adjusted to assisted temperature of 54 degree in case the living space temperature is below that.
- Using water as thermal storage in triple paned clear glasses windows. For heating, the cavity filled with water faces living space and the other cavity is filled with air as insulation. during the day water absorb the sun heat energy and it reflect it back gradually at night. For cooling the cavity filled with water is facing outside to prevent heat to get into the building envelop.