2. CONFIGURATION OF HEAT EXCHANGERS

2.1. PARALLEL

In the picture below there is a double tube heat exchanger with parallel configuration:

Where the fluid 1 is the hot fluid (red) flowing through the tube and the fluid inside the fluid 2 is cold (blue) circulates through outer tube.

The following chart shows the different distribution of temperatures, depending on whether there is any change in the fluid phase or not (the blue fluid is flowing cold and warm red fluid):

 

In this first graph, none of the fluid undergoes a phase change.

In this graph, the hot fluid condenses, that is, the phase change temperature, remains constant.

In this last graph, you can see that the fluid remains constant cold, because there is a phase change, is evaporating.