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Glossary of Solar Radiation Resource Terms |
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Other relevant glossaries
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Kelvin -
the temperature unit based on the theoretical minimum temperature, used in many
physical calculations. The relationship between Kelvin and
Celsius is
K = C + 273.16
KD -
the ratio between
diffuse sky radiation and
extraterrestrial radiation,
used as a normalization of the diffuse sky radiation because KD removes
the effect of low sun angle and reduces the scale of values to between 0 and 1.
KT = KN + KD
KN -
the ratio between
direct normal irradiance and
tracking
extraterrestrial radiation,
used as a normalization of the direct normal irradiance because KN removes
the effect of low sun angle and reduces the scale of values to between 0 and 1.
KT = KN + KD
KT -
the ratio between
global horizontal radiation and
extraterrestrial radiation,
used as a normalization of the global horizontal radiation because KT removes
the effect of low sun angle and reduces the scale of values to between 0 and 1.
KT = KN + KD
kW -
kilowatt, or 1000 Watts, a unit of power.
kWh -
kilowatt-hour, a unit of energy equivalent to (1000 = kilo) x (3600 seconds) = 3,600,000
Joules, or 3.6 MJ; the amount of energy a kilowatt
source produces in one hour
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