Railways
NTPC (Technical Ability)
Refrigeration and Air-Conditioning
Question Bank
Refrigeration and Air-Conditioning
question_answer
The expression, where \[\frac{0.622{{p}_{v}}}{{{p}_{b-}}{{p}_{v}}}\] where \[{{p}_{v}}\,=\] partial pressure of water vapour: \[{{p}_{b}}\,=\] atmospheric barometric pressure, is used for calculating: