Pumps and Turbines

The 24th week
Pumps and Turbines
As mentioned before the pumps add energy to the liquid while the turbines take energy. The energy equation of flowing system( as shown in the fig.) contains both of them will be:
p_1/?+(V_1^2)/2g+z_1+E_P-E_T=p_2/?+(V_2^2)/2g+z_2
Where:
- Section 1 and 2 will be before and after pump or turbine respectively.
- EP, and ET= energy added by pump.
Ep. = weight of fluid added (W) X hp,. units= N. m
hp= head added by pump, units= N. m/N
- ET= energy removed by turbine.
ET = weight of fluid removed(W) X ht,. units= N. m
hT= head removed by turbine, units= N. m/N
the power of pump or turbine in watt units is:
Prp= Q?hp

Prt= Q?ht
Where:
- Section 1 and 2 will be before and after pump or turbine respectively.
- EP, and ET= energy added by pump.
Ep. = weight of fluid added (W) X hp,. units= N. m
hp= head added by pump, units= N. m/N
- ET= energy removed by turbine.
ET = weight of fluid removed(W) X ht,. units= N. m
hT= head removed by turbine, units= N. m/N
the power of pump or turbine in watt units is:
Prp= Q?hp

Prt= Q?ht