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Part 4- Comparing, House B -169 Sullivan Ave, to House C the Adjacent Home
Sensors installed on House B coincide with sensors on House C. Sensors installed 6" below grade level, indicate the soil temperature next to house AC@ is consistently 5ྻC warmer than the soil temperature next to house AB@(See chart C1).
Sensors installed 2.5' below grade also indicate the soil temperature next to house AC@ is consistently 5°C warmer than the soil temperature next to house AB@ (See chart C2). Sensors installed 5.5' below grade indicate the soil temperature next to house AC@ is consistently 4°C warmer than the soil temperature next to house AB@ (See chart C3). Sensors installed at the footing level indicate the soil temperature next to house AC@ is consistently warmer than the soil temperature next to house AB@ (See chart C4).
Through out the duration of the project House AC@ has consistently generated a far greater heat loss than that of House AB@. The elevated heat loss in House AC@ has been large enough to generate and maintain a plus 5°C difference in soil temperatures and extends from footing to grade level, spanning the entire perimeter of the home.
As you can see in Chart C1, C2, C3, C4 the outside temperatures play a role in soil temperatures showing a higher effect at ground level. As you go deeper into the ground, the outside temperature and climate has a less effect on temperatures.
Comparing Full Basement Envelope System House AA@ to Ground Level Basement Envelope System House AB@
Records indicate the full basement envelope system has out performed the ground level basement envelope in several ways.
Using the ground level envelope system, interior basement wall temperatures are directly affected by the outside air temperature. The sensor on the top of the inside basement wall, which is marked 8' on our charts, shows that the outside temperature plays a major role in the changes in temperature on the interior basement wall. At certain times during the winter, this sensor has shown a negative temperature reading (See Chart G1). As you proceed down the wall to the 6' mark, which is approximately at ground level, the temperature is a little bit lower then the 8' mark because of the ice frozen on the basement wall at this point (See Chart G2). The concrete slab sensor in House B is attached to the basement floor, measuring 8' from the foundation wall toward the basement center. The graph will also show the inside foundation wall surface temperatures to occasionally drop below freezing during the winter months. As you proceed down the wall to the 4' and 2' mark the outside temperature has less effect on the inside wall temperature readings. (See Chart G3, G4) The concrete core temperature is down because of the exposed basement wall, this causes the humidity to be higher because of the low temperature in the basement wall.
Using the full basement envelope system, outside air temperatures have very little effect on the interior foundation wall surface temperature (See Charts F1, F2, F3, F4).
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