### Abstract

A heat exchanger and the fluid mover that delivers a working fluid to the exchanger inlet may experience profound interactions, which argues against treating them as separate entities. On the other hand, the design practice commonly assumes that the fluid delivered to the heat exchanger inlet is specifiable without consideration of any possible influence of the exchanger. The magnitude of the flow rate arriving at the exchanger inlet is generally based on the pressure rise—flow rate (P-Q) curve supplied by the manufacturer of the fan and coupled with the assumption that that flow is uniformly distributed across the exchanger inlet. It was found that the complexity of the fluid flow delivered by the rotating fan gives rise to a large fluid resistance within the pin-fin array, such that the delivered air flow rate was only about 37% of that for the P-Q case. On the other hand, the corresponding reduction in the rate of heat transfer was, at most, 27%.

Original language | English (US) |
---|---|

Pages (from-to) | 964-979 |

Number of pages | 16 |

Journal | Numerical Heat Transfer; Part A: Applications |

Volume | 70 |

Issue number | 9 |

DOIs | |

State | Published - Nov 1 2016 |

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### Cite this

*Numerical Heat Transfer; Part A: Applications*,

*70*(9), 964-979. https://doi.org/10.1080/10407782.2016.1214480

**Investigation of coupled systems consisting of fluid movers and heat-exchange devices.** / Ahn, J.; Sparrow, E. M.; Gorman, J. M.; Minkowycz, W. J.

Research output: Contribution to journal › Article

*Numerical Heat Transfer; Part A: Applications*, vol. 70, no. 9, pp. 964-979. https://doi.org/10.1080/10407782.2016.1214480

}

TY - JOUR

T1 - Investigation of coupled systems consisting of fluid movers and heat-exchange devices

AU - Ahn, J.

AU - Sparrow, E. M.

AU - Gorman, J. M.

AU - Minkowycz, W. J.

PY - 2016/11/1

Y1 - 2016/11/1

N2 - A heat exchanger and the fluid mover that delivers a working fluid to the exchanger inlet may experience profound interactions, which argues against treating them as separate entities. On the other hand, the design practice commonly assumes that the fluid delivered to the heat exchanger inlet is specifiable without consideration of any possible influence of the exchanger. The magnitude of the flow rate arriving at the exchanger inlet is generally based on the pressure rise—flow rate (P-Q) curve supplied by the manufacturer of the fan and coupled with the assumption that that flow is uniformly distributed across the exchanger inlet. It was found that the complexity of the fluid flow delivered by the rotating fan gives rise to a large fluid resistance within the pin-fin array, such that the delivered air flow rate was only about 37% of that for the P-Q case. On the other hand, the corresponding reduction in the rate of heat transfer was, at most, 27%.

AB - A heat exchanger and the fluid mover that delivers a working fluid to the exchanger inlet may experience profound interactions, which argues against treating them as separate entities. On the other hand, the design practice commonly assumes that the fluid delivered to the heat exchanger inlet is specifiable without consideration of any possible influence of the exchanger. The magnitude of the flow rate arriving at the exchanger inlet is generally based on the pressure rise—flow rate (P-Q) curve supplied by the manufacturer of the fan and coupled with the assumption that that flow is uniformly distributed across the exchanger inlet. It was found that the complexity of the fluid flow delivered by the rotating fan gives rise to a large fluid resistance within the pin-fin array, such that the delivered air flow rate was only about 37% of that for the P-Q case. On the other hand, the corresponding reduction in the rate of heat transfer was, at most, 27%.

UR - http://www.scopus.com/inward/record.url?scp=84992034621&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84992034621&partnerID=8YFLogxK

U2 - 10.1080/10407782.2016.1214480

DO - 10.1080/10407782.2016.1214480

M3 - Article

AN - SCOPUS:84992034621

VL - 70

SP - 964

EP - 979

JO - Numerical Heat Transfer; Part A: Applications

JF - Numerical Heat Transfer; Part A: Applications

SN - 1040-7782

IS - 9

ER -