The volume flow hood testo 420 sets new standards regarding weight and precision. With only 2.9 kg and ergonomic handles, frequent or difficult measurements too, can be carried out comfortably, without inducing fatigue, and therefore safely..

The article describes a case study of a retrofit undertaken at a large IT office building, which had been impacted by corrosive external environment leading to high incidence of equipment failure and how the problem was addressed through innovative ventilation design…

An existing energy guzzler and reciprocating chillers were replaced with two units of highly efficient YORK water cooled screw chillers...