Plate Heat Exchanger Calculation Example

1 2 example for estimate vapour flow rate requirement to achieve required outlet temperature of the cold fluid.

Plate heat exchanger calculation example. The six most important parameters include. Combining each of these resistances in series gives. 1 1 example for finding cold fluid outlet temperature. The following data must be defined in order to size a plate and frame heat exchanger.

An estimate of the overall heat transfer coefficient the required. Plate heat exchanger calculation method. An example of this type of heat exchanger is a cooling tower where water is cooled through direct contact. Calculate the required heat transfer rate q in btu hr from specified information about fluid flow rates and temperatures.

Heat exchanger types 4 calculation method temperature program heat load logarithmic mean temperature. Preliminary design of heat exchangers is an iterative process for determining the heat exchanger surface area needed for known heat load and fluids. Calculate the required heat transfer area based on values needed. Heat exchangers 73 individual thermal resistances of the system.

1 plate heat exchanger heat transfer area calculation phe design calculation. Fluid properties viscosity specific heat. Make an initial estimate of the overall heat transfer coefficient u based on the fluids involved. Get the design data.

Further data can then be determined. 2 1 step 1. To solve a thermal problem we need to know several parameters. The amount of heat to be transferred heat load the inlet and outlet temperatures on the primary and secondary sides.

1 ua 1 ηoha i 1 skw 1 ηoha o 5 7 where η0 is the surface efficiency of inner and outer surfaces h is the heat transfer coefficients for the inner and outer surfaces and s is a shape factor for the wall. Here is a set of steps for the process. Heat exchanger design includes various aspects including determination of heat transfer area choice of heat exchanger type and detailing of the heat exchanger configuration. Plate heat exchanger is equal to the heat gained by the other.

1 3 online steam table for saturated steam. If possible as a function of temperature. Download the excel spreadsheet templates in this article to make preliminary heat exchanger design calculations. These templates use s i.

Within a plate heat exchanger the fluid paths alternate between plates allowing the two fluids to interact but not mix several times in a small area. Design of a heat exchanger is an iterative trial error process. Plate heat exchanger sizing how to design a plate heat exchanger.