Subject: Heat exchanger Lab
Question:
1.1) in heat exchanger analysis, the following quantities areused. Explain what each means and give
a formula for each. Assume the mass flow rates, fluid properties,inlet, temperatures, and length
and diameters of the heat exchanger are known.
a) Overall heat transfer coefficient. UA.
b) A number of transfer units, NTU.
c) Effectiveness, e
1.2) what is the hydraulic diameter and why is it useful fordouble-pipe heat exchanger analysis?
