| dc.description.abstract | This report contains an overview of designing a heat exchanger used as an economizer used to
recover heat from hot flue gas to pre-heat boiler feed water at Century Bottling Company, Mbarara.
In order to achieve a good heat transfer, a tubular heat exchanger was selected for the application.
Among the different types of tubular heat exchangers, a fixed tube type shell and tube heat
exchanger was taken into consideration due accompanying pros such as availability, cost and
design convenience.
Two heat exchangers were designed for comparison purposes and Kern’s method was used to size
both. Heat Exchanger 1 is 2m with an overall heat transfer coefficient of 10.8 W/m2oC, surface
area of 13.6 m2
and a tube bundle containing 16 tubes. Heat Exchanger 2 is 3m with overall heat
transfer coefficient 9.4 W/m2oC, surface area of 18m2
and a tube bundle containing 12 tubes.
Material of construction used is stainless steel 18/8 due to its corrosive resistant properties since
flue gas is corrosive.
Finally heat exchanger 1 was recommended for installation following the discussion. | en_US |
