Radiator valves: Determination of the sound power level in the laboratory (NT ACOU 101)

Report #:NT ACOU 101 Approved:November 1997 Size: 121.90 KB Abstract This Nordtest Method specifies a method of measuring in the laboratory, the noise emission (sound Read more…

Testing and evaluation of long term performance of solar collectors: Thermal performance, reliability and durability after one year’s outdoor exposure under stagnation conditions (NT VVS 112)

Report #: NT VVS 112 Approved: May 1997 Size: 68.51 KB Abstract   The objective of a one-year outdoor exposure under stagnation conditions is to Read more…