(e) Heat Exchangers

Figure 13.4

The figure 13.4 explains the working of a simple heat exchanger. The governing equation may be modified for multiple entry and multiple exit of the system as

	(13.12)
	(13.13)
	(13.14)
	(13.15)

Further, and

(13.16)

is the mass flow rate of cold fluid and is the mass flow rate of hot fluid.