Modeling a Network of Heat Exchangers
Jayathunga, Hemamali Chathurangani Yashika (2015)
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe201505188422
https://urn.fi/URN:NBN:fi-fe201505188422
Tiivistelmä
This research work addresses the problem of building a mathematical model for the
given system of heat exchangers and to determine the temperatures, pressures and
velocities at the intermediate positions. Such model could be used in nding an optimal
design for such a superstructure. To limit the size and computing time a reduced
network model was used. The method can be generalized to larger network structures.
A mathematical model which includes a system of non-linear equations has been built
and solved according to the Newton-Raphson algorithm. The results obtained by
the proposed mathematical model were compared with the results obtained by the
Paterson approximation and Chen's Approximation. Results of this research work
in collaboration with a current ongoing research at the department will optimize the
valve positions and hence, minimize the pumping cost and maximize the heat transfer
of the system of heat exchangers.
given system of heat exchangers and to determine the temperatures, pressures and
velocities at the intermediate positions. Such model could be used in nding an optimal
design for such a superstructure. To limit the size and computing time a reduced
network model was used. The method can be generalized to larger network structures.
A mathematical model which includes a system of non-linear equations has been built
and solved according to the Newton-Raphson algorithm. The results obtained by
the proposed mathematical model were compared with the results obtained by the
Paterson approximation and Chen's Approximation. Results of this research work
in collaboration with a current ongoing research at the department will optimize the
valve positions and hence, minimize the pumping cost and maximize the heat transfer
of the system of heat exchangers.