1. In normal steady-state or periodic operation, the cold-fluid outlet temperature varies as a…

1. In normal steady-state or periodic operation, the
cold-fluid outlet temperature varies as a function of time for the following
exchanger:

(a) plate exchanger (b) rotary regenerator (c) tube-fin
exchanger

(d) fixed-matrix regenerator (e) double-pipe exchanger

2. The following factors make analysis of regenerators more
complicated than for recuperators:

(a) Thermal resistance of solid material is important.

(b) Thermal capacitance of solid material is important.

(c) Heat transfer coefficients vary with position.

(d) Heat transfer from/to fluid streams occurs
independently.

(e)
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1. In normal steady-state or periodic operation, the
cold-fluid outlet temperature varies as a function of time for the following
exchanger:

(a) plate exchanger (b) rotary regenerator (c) tube-fin
exchanger

(d) fixed-matrix regenerator (e) double-pipe exchanger

2. The following factors make analysis of regenerators more
complicated than for recuperators:

(a) Thermal resistance of solid material is important.

(b) Thermal capacitance of solid material is important.

(c) Heat transfer coefficients vary with position.

(d) Heat transfer from/to fluid streams occurs
independently.

(e) Compactness  (m2/m3) is higher.

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