Area 1 Flashcards
Agricultural and Biosystems Power, Energy, and Machinery Engineering Formulas
1
Q
Power formula
A
P=NT/1000 (kw)
N=rad/sec
T=N-m, kg-m
2
Q
Max speed
A
V=πDN
3
Q
mechanical efficiency
A
ME=BHP/IHP X 100
4
Q
BRAKE THERMAL EFFICIENCY
A
BHE=BRAKE POWER/(MASS OF FUEL per HOUR x CALORIFIC VALUE)
5
Q
Piston Displacement
A
PD=πD^2L/4
6
Q
Drawbar Horsepower
A
DHP= Force x Speed
7
Q
Indicated Hp
A
IHP=PLANn/33000c if P=psi
= PLANn/4500c if P=kg/cm^2
8
Q
shaft diameter
A
=[(16xT)/(πDS)]^1/3
9
Q
A
