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A carpet manufactured from heat set yarn is more attractive, durable and comfortable for the user. The added value of heatset carpet is significant. Normally a heat set carpet can be identified by its grainy structure, which is called "pinpoint tip definition" in the industry. The appearance of the cut pile ends is similar to pin points.
Schematic of the LCL in relation to the temperature (T) and dew point and their altitude (Z); the moist adiabatic temperature curve above the LCL is also sketched for reference The lifting condensation level or lifted condensation level ( LCL ) is the height at which the relative humidity (RH) of an air parcel will reach 100% with respect to ...
A traditional stair carpet was characterized by not covering the full width of the stair but leaving the underlying wood−stone−tile of the tread and risers open to view on the sides. This was sometimes simply to save on carpet and sometimes to expose features while preventing wear to the underlying surface.
Measured in square feet, the reference standard for EDR is the mattress radiator [1] invented by Stephen J. Gold in the mid 19th century. One square foot of EDR is able to liberate 240 BTU per hour when surrounded by 70 °F (21 °C) air and filled with steam of approximately 215 °F (102 °C) temperature and 1 psi of pressure.
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Absolute thermal resistance is the temperature difference across a structure when a unit of heat energy flows through it in unit time.It is the reciprocal of thermal conductance.
Since 1982, STP has been defined as a temperature of 273.15 K (0 °C, 32 °F) and an absolute pressure of exactly 1 bar (100 kPa, 10 5 Pa). NIST uses a temperature of 20 °C (293.15 K, 68 °F) and an absolute pressure of 1 atm (14.696 psi, 101.325 kPa). [3] This standard is also called normal temperature and pressure (abbreviated as NTP).
Thus, indirectly, thermal velocity is a measure of temperature. Technically speaking, it is a measure of the width of the peak in the Maxwell–Boltzmann particle velocity distribution . Note that in the strictest sense thermal velocity is not a velocity , since velocity usually describes a vector rather than simply a scalar speed .