Li Ning, Cui Zengguang, Zhang Xinrong. Optimization Design of the Heat Exchangers in Fan Coil Units Using Genetic Algorithm[J]. Journal of refrigeration, 2015, 36(4).
DOI:
Li Ning, Cui Zengguang, Zhang Xinrong. Optimization Design of the Heat Exchangers in Fan Coil Units Using Genetic Algorithm[J]. Journal of refrigeration, 2015, 36(4). DOI: 10.3969/j.issn.0253-4339.2015.04.035.
Optimization Design of the Heat Exchangers in Fan Coil Units Using Genetic Algorithm
an optimization method based on genetic algorithm and entransy dissipation theory is applied to the optimization design of the plate fin and tube heat exchangers in fan coil units. Two examples
i.e. the heat exchanger in a cooling dry fan coil unit and the heat exchanger in a heating fan coil unit
are studied and reported. Both of the two heat exchangers have plate fin and tube structure
but with different conditions and constraints. The optimization objective selected is the entransy dissipation based thermal resistance
and the design variables are the transverse tube pitch
longitudinal tube pitch
tube outside diameter
fin pitch and number of fins. To evaluate the performances of the heat exchanger
the heat transfer rate
air side and water side pressure drop
total pumping power and effectiveness are used as the evaluation index. The optimization results show that both the entransy dissipation based thermal resistance and other performances are improved
under the specific conditions in the current study.