Title of article :
Simultaneous synthesis of flexible heat exchanger network
Author/Authors :
Juha Aaltola، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2002
Abstract :
A framework is presented for generating flexible heat exchanger networks (HENs) over a specified range of variations in the flow rates and temperatures of the streams. The flexible HEN is synthesised using a combination of a multiperiod simultaneous MINLP model and search algorithms, where the total annual costs due to utility duties, exchanger areas and selection of matches are optimised. The simultaneous HEN synthesis allows the data to be distributed according to a probability distribution and it does not rely on the concept of pinch point. Both search algorithms involve a developed multiperiod NLP/LP model where utility costs are minimised. The proposed procedures are explained through an example including variations resulting in a network with variable splits and bypasses. This framework results in a HEN working under variations without losing stream temperature targets while keeping an economically optimal energy integration.
Keywords :
Flexible heat exchanger network , Multiperiod optimisation
Journal title :
Applied Thermal Engineering
Journal title :
Applied Thermal Engineering