Velocity and Velocity with density correction: For Standard Air (70F @ 29.92"): ⎛ V ⎞ ⎟ VP = ⎜ ⎝ 4005 ⎠ V = 4005 × VP 530 BAR × Den = 0.075 × 460 + T 29.92
For Other Than Standard Air:
2
VP Den
V = 1096.7 ×
Airflow stations flow: CFM = CV × ∆P(inches) H 2o
Cv = 2
CFM ∆P(inches) H 2o
2
⎛ CFM⎞ ∆P(inches)H 2o = ⎜ ⎟ ⎝ Cv ⎠
Air Thermal calculations: sp.ht = 0.24 13.3 cu.ft. = 1 lb. 0.075 lbs. = 1 cu.ft. .075 lbs. x 60 min. = 4.5 lbs per hour 4.5 x 0.24 = 1.08 BTUH = M × sp. ht .× ∆T