Abstract Heat Exchanger Network (HEN) synthesis is normally carried out in two stages, targeting and design. In the past, most researchers have focused on developing design methods for hand calculations (e.g. the Pinch Design Method). In the present paper, an algorithm for automated synthesis of HEN is presented, which is based on the block concept proposed by Zhu et al (1994a). The basic idea is to simplify a design problem by decomposing it into a number of blocks. In each block, piece-wise stream composites present similar profiles and hot streams are in energy balance with cold streams. After the block decomposition, design is carried out using area targeting principles and a number of newly developed heuristic rules and a best set of matches is selected simultaneously. The initial designs produced by such a method can closely approach the energy and area targets with a small number of units. Good initial solutions are then provided for subsequent cost optimisation. The main advantage of this design strategy is that designs with good quality can be achieved efficiently.
[1]
Robin Smith,et al.
Cost optimum heat exchanger networks—2. targets and design for detailed capital cost models
,
1990
.
[2]
R. M. Wood,et al.
A new method for heat exchanger network synthesis using area targeting procedures
,
1995
.
[3]
E. Rev,et al.
Diverse pinch concept for heat exchange network synthesis: the case of different heat transfer conditions
,
1991
.
[4]
R. Smith,et al.
Targets and design for minimum number of shells in heat exchanger networks
,
1989
.
[5]
Bodo Linnhoff,et al.
Cost optimum heat exchanger networks—1. Minimum energy and capital using simple models for capital cost
,
1990
.
[6]
B. Linnhoff,et al.
The pinch design method for heat exchanger networks
,
1983
.
[7]
Bodo Linnhoff,et al.
A User guide on process integration for the efficient use of energy
,
1994
.