What is heat flow?

Some articles on heat flow, heat, heat flows:

Pipe Insulation - Heat Flow Calculations and R-value
... Heat flow passing through pipe insulation can be calculated by following the equations set out in either the ASTM C 680 or EN ISO 12241 standards ... Heat flow is given by the following equation Where is the internal pipe temperature, is the external ambient temperature, and is the sum total thermal resistance of all insulation ... In order to calculate heat flow, it is first necessary to calculate the thermal resistance ("R-value") for each layer of insulation ...
Apollo 15, Lunar Surface - EVA-2
... them more time to finish the drilling the holes for the heat flow experiment ... began another attempt at drilling holes for the heat-flow experiment ... to this was far enough as they were well below the depth of the heat-flow probes, the main reason for taking the core sample ...
Cordwood - Thermal Mass and Insulation
... This is because the specific heat capacity of clay brick is higher (0.84 versus wood's 0.42), and is denser than airy woods like cedar, cypress, or pine ... daily temperature swings thermal mass will absorb and then slowly release the midday heat and nighttime cool in sequence, moderating temperature fluctuations ... However, wood is an anisotropic material with respect to heat flow ...
Geothermal - Heat Flow
... Heat flows constantly from its sources within the Earth to the surface ... Total heat loss from the Earth is estimated at 44.2 TW (4.42 × 1013 watts) ... Mean heat flow is 65 mW/m2 over continental crust and 101 mW/m2 over oceanic crust ...
Pipe Insulation - Applications - Energy Saving
... can operate at temperatures far removed from the ambient temperature, and the rate of heat flow from a pipe is related to the temperature differential between the pipe and the surrounding ... In many situations, this heat flow is undesirable ... of thermal pipe insulation introduces thermal resistance and reduces the heat flow ...

Famous quotes containing the words flow and/or heat:

    The first principle of a free society is an untrammeled flow of words in an open forum.
    Adlai Stevenson (1900–1965)

    For, ere Demetrius looked on Hermia’s eyne,
    He hailed down oaths that he was only mine,
    And when this hail some heat from Hermia felt,
    So he dissolved, and showers of oaths did melt.
    William Shakespeare (1564–1616)