Expert Civil, Structural and Environmental Engineers in Saint Albans

Quick Guide To Determine Pressure Drops Need a quick way to determine what happens if you increase or decrease a water flow through a Plate Heat Exchanger ? Do not have time to phone up the supplier, talk to someone who is not really interested in helping you because there is no potential sale involved, only to receive the immortal line of “I’ll get back to you” ? Look no further – below is a quick reference table that provides an indication of a new pressure drop figure if the flow rate is increased or decreased. It is necessary to know the pressure drop at a given flow rate as a starting point. The same figures can be used for other Newtonian fluids as long as there are no significant changes in the temperature / viscosity of the fluid when the flow rate is altered. Increasing the flow: 10% increase in flow Pressure drop goes up 20% 20% increase in flow Pressure drop goes up 40% 30% increase in flow Pressure drop goes up 60% 50% increase in flow Pressure drop doubles 100% increase in flow Pressure drop goes up 4 times Decreasing the flow: Reduce flow by 10% Pressure drop goes down by 19% Reduce flow by 20% Pressure drop goes down by 37% Reduce flow by 30% Pressure drop halves Reduce flow by 50% Pressure drop goes down by 74% Reduce flow by 75% Pressure drop goes down by 93% Technical Guide-lines brought to you by © TimSmith Heat Exchangers Ltd 2020...