But the remaining fraction of the fluid will flow through bypass areas. The flow paths in the heat exchanger with signal baffles are described in the schematic diagram shown in figure.4 [5]. The temperature of two fluids will tend to equalize. Heat is simply exchanged from one fluid to another. No energy will be added or removed. References [1] Industrial shell and tube heat exchanger. Available from URL: http://www.hrsfunke.com/products/shell-tube-heat-exchangers/industrial-shell-and-tube.aspx[2] Heat exchanger process. Available from URL: http://www.wermac.org/equipment/heatexchanger_part2.html[3] Shell and tube heat exchanger. Available from URL: http://www.thomasnet.com/articles/process-equipment/heat-exchanger-types[4] Industrial application of shell and tube heat exchangers. Available from URL: http://www.shell-tube.com/Shell-Tube-Applications.html[5] Single-phase shell-tube flows and heat transfer. Available from URL: