Refrigeration and Air Conditioning Nusselt number (NN) is given by NN = V²/t.cp NN = ρ V l /μ NN = hl/k NN = μ cp/k NN = V²/t.cp NN = ρ V l /μ NN = hl/k NN = μ cp/k ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In case of sensible heating of air, the coil efficiency is given by (where B.P.F. = Bypass factor) 1 + B.P.F. 1 - B. P.F. 1/ B.P.F. P.F. - 1 1 + B.P.F. 1 - B. P.F. 1/ B.P.F. P.F. - 1 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The undesirable property of a refrigerant is Non-toxic Non-flammable High boiling point Non-explosive Non-toxic Non-flammable High boiling point Non-explosive ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The desirable property of a refrigerant is High latent heat of vaporisation Low boiling point All of these High critical temperature High latent heat of vaporisation Low boiling point All of these High critical temperature ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The operating pressure for refrigerating units using R-12 as a refrigerant is 15 bar 30 bar 8 bar 2 bar 15 bar 30 bar 8 bar 2 bar ANSWER DOWNLOAD EXAMIANS APP
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