BTU (int.)-zoll/stunde-fuß²-°F BTU (int.)/stunde-fuß-°F BTU (TChem.)-zoll/stunde-fuß²-°F BTU (TChem.)/stunde-fuß-°F kalorie (int.)/sekunde-centimeter-°C kalorie (TChem.)/sekunde-centimeter-°C kilowatt/meter-K watt/centimeter-°C watt/meter-K