Plate type heat exchangers are, in many ways, superior to the original shell and tube design. As with any heat exchanger, you must calculate the operating temperatures so it works as desired.
Cold Leg Heat Transfer Coefficient
Calculating the temperature of your cold legs requires knowing the mass flow rate, cold inlet temperature, cold outlet temperature and specific heat of the fluid in the system. To calculate the heat transfer rate, multiply the mass flow rate by the specific heat of the fluid, by the difference of the outlet, minus the inlet temperature.
Hot Leg Heat Transfer Coefficient
Calculating the temperature of your hot leg is similar to the cold leg with a minor difference. You need all the same data, but the equation is figured by multiplying the mass flow rate by the specific heat of the fluid, by the difference of the inlet temperature, minus the outlet temperature.
Heat Transfer Coefficient
This calculation lets you know how efficient your heat exchanger is, plate type heat exchangers will generally be three-and-a-half to four times more efficient than shell and tube designs. One over the overall heat transfer coefficient is equal to one over hot leg heat transfer coefficient, plus one over cold leg heat transfer coefficient, plus the fouling coefficient.
How to Build Water-to-Water Heat Exchangers
A heat exchanger is a device for transferring thermal energy from one substance to another. Heat exchangers are commonly used in solar...
How to Design Heat Exchangers
Heat exchangers are devices that transfer thermal energy from one substance to another. Heat exchangers can be found in a variety of...
How to Size a Heat Exchanger Plate
Heat exchangers are systems used to move thermal energy from a hot flowing substance to a cold flowing substance. A plate heat...
- How to Calculate Heat Exchanger Efficiency
- How to Calculate Steel Plate Bending