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Author(s):	Wiesemeyer, Karin
Title:	Vergleich der Berechnungsmethoden von VDI 2055, EN ISO 12241 und ASTM C 680
Abstract:	Zur Berechnung der Wärme- und Kälteverluste von betriebstechnischen Anlagen sind verschiedene Berechnungsmethoden vorhanden. In dieser Untersuchung werden die Richtlinie VDI 2055 Blatt 1, die EN ISO 12241 und die ASTM C 680 miteinander verglichen. Eine theoretische Betrachtung liefert Unterschiede und Gemeinsamkeiten in den Gleichungen zur Wärmeleitung, Wärmestrahlung und dem Wärmeübergang durch Konvektion. Die Beispiele zeigen zum Teil deutliche Unterschiede im Berechnungsergebnis. Aufgrund der teilweise großen Abweichungen im Berechnungsergebnis sollte immer diejenige Berechnungsmethode angewendet werden, welche in der Ausschreibung gefordert ist, bzw. wenn keine Anforderung an die Berechnungsmethode angegeben ist, sollte die gewählte Methode unbedingt angegeben werden. Comparison of the calculation rules VDI 2055, EN ISO 12241 and ASTM C 680. There are several guidelines to calculate the heat and cold losses of operational installations in the industry and the building services. In this assay the guideline VDI 2055 part 1, the EN ISO 12241 and the ASTM C 680 will be compared. A theoretical approach delivers differences and similarities of the equations regarding heat conduction and heat transfer by radiation and convection. There are partially significant differences in the calculated results of the examples. Due to these differences one should always use the calculation rule which is asked in the tender documents. If no calculation method is specified, the chosen calculation rule should be indicated.
Source:	Bauphysik 39 (2017), No. 2
Page/s:	121-125
Language of Publication:	German

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