Thermal use of the underground - Ground source heat pump systems.
NORMA vydána dne 1.9.2001
Designation standards: VDI 4640Blatt2
Note: NEPLATNÁ
Publication date standards: 1.9.2001
The number of pages: 43
Approximate weight : 129 g (0.28 lbs)
Country: German technical standard
Kategorie: Technické normy VDI
Thermische Nutzung des Untergrundes - Erdgekoppelte Wärmepumpenanlagen.