Thermal use of the underground - Ground source heat pump systems.
NORMA vydána dne 1.6.2019
Designation standards: VDI 4640Blatt2
Publication date standards: 1.6.2019
The number of pages: 139
Approximate weight : 448 g (0.99 lbs)
Country: German technical standard
Kategorie: Technické normy VDI
Thermische Nutzung des Untergrunds - Erdgekoppelte Wärmepumpenanlagen.