The performance of thermal devices such as
evaporators is greatly affected due to flow mal-
distribution in the parallel channels. There is
inherent flow mal-distribution in manifolds
involving single-phase flow which is a result of non-
uniformity of the pressure drop across each lateral
channel. This will even be more complicated when the
flow involves two phase, which is often the case in
refrigerant flow of multi-pass evaporators, since
there is gravity induced preferential phase
separation at the entrance to lateral channels in
manifolds.
In this book, the result of experimental and
theoretical study of single-phase and two-phase flow
mal-distribution performed on a model brazed
aluminum evaporator having horizontal headers is
presented. The analytical method presented here
provides a scheme on how to predict the flow split
in a downward dividing header. Possible means of
reducing mal-distribution is also discussed based on
the result of flow visualization test.
evaporators is greatly affected due to flow mal-
distribution in the parallel channels. There is
inherent flow mal-distribution in manifolds
involving single-phase flow which is a result of non-
uniformity of the pressure drop across each lateral
channel. This will even be more complicated when the
flow involves two phase, which is often the case in
refrigerant flow of multi-pass evaporators, since
there is gravity induced preferential phase
separation at the entrance to lateral channels in
manifolds.
In this book, the result of experimental and
theoretical study of single-phase and two-phase flow
mal-distribution performed on a model brazed
aluminum evaporator having horizontal headers is
presented. The analytical method presented here
provides a scheme on how to predict the flow split
in a downward dividing header. Possible means of
reducing mal-distribution is also discussed based on
the result of flow visualization test.