Sentences with phrase «crawlspace temperatures»

Figure 2: Old Crawlspace Temperatures — Surface temperatures are dominated by radiation and conduction, not by convection.

Not exact matches

For example, an aerial robot equipped with a radiation detector, 3D camera system, and temperature and humidity sensors could inspect something like the Fukushima nuclear reactors, where the radiation level is too high for humans, or fly into tight crawlspaces such as mines or collapsed buildings.

Crawlspace surface temperatures are dominated by radiation and conduction, not by convection (Figure 2).

The exposed surface of the fiberglass batt insulation is below the dewpoint temperature of the air in the crawlspace as is the exposed portion of the wood floor joists and condensation forms on both the surface of the insulation and the surface of the exposed wood.

A reasonable rule - of - thumb to estimate crawlspace ground surface temperatures is to use the average annual ambient air temperature for that location.

We don't get much ventilation air change in crawlspaces — the typical ventilation air change rate in a crawlspace is approximately 1 air change per hour (ach).2 In determining crawlspace surface temperatures we can pretty much ignore the ventilation air change.3 We can't ignore the ventilation air in the moisture balance but we can in the energy balance.

Now that we insulate floors, crawlspaces are within a degree or two of ground temperature.

In most regions the exterior air is above the dewpoint temperature of both the ground surface temperature in crawlspaces and the temperature of the floor assembly.