Answer:
I think the answer is button.
Explanation:
Answer and Explanation:
The parameter which affect the heat transfer coefficient in a heat exchanger are
- Viscosity of the liquid, thermal conductivity,density , specific heat
- Geometry of heat exchanger that length width and height of heat exchanger
- Velocity of fluids
- It also depends on the type of flow of liquid that laminar flow ,turbulent flow
Answer:
The pump operates satisfactorily.
Explanation:
According to the NPSH available definition:
Where:
The absolute pressure is the barometric pressure Pb minus the losses: Suction Lift PLift and pipe friction loss Ploss:
To convert the losses in head to pressure:
So:
The absolute pressure:
replacing on the NPSH available equiation:
As the NPSH availiable is higher than de required the pump should operate satisfactorily.
Answer:
Q=8.375 KW
Explanation:
Given that
Change in temperature ΔT = 4°C
Mass flow rate m = 125 kg/min
We know that
1 min = 60 sec
m= 125/60 kg/s
m = 2.08 kg/s
The heat transfer Q given as
Q= m Cp ΔT
Given that Cp = 1.005 kJ/kg·K.
By putting the values
Q= m Cp ΔT
Q= 2.08 x 1.005 x 4 KW
Q=8.375 KW
Therefore heat loss from air is 8.375 KW.