Effect of non-uniform air velocity distribution on evaporator performance and its improvement on a residential air conditioner

Effects of water mal-distribution on thermostatic-expansion-valve stability and its controlled two-circuit evaporator performance

“…The refrigeration plant and the fan-coil unit were placed in the outdoor and the indoor environmental simulation rooms, respectively. The indoor air enthalpy difference method was referred to in the literature (Song et al, 2012). The data acquisition system automatically collected and stored experimental data during the tests.…”

A favorable face velocity distribution and a V-frame cell for power plant air-cooled condensers

“…T'Joen et al [14] experimentally studied the behavior of a heat exchanger under conditions of nonuniform inlet airflow, and the effect of non-uniformities on the performance was found to be substantial. Song et al [5] numerically and experimentally studied the effect of non-uniform air velocity distributions on the performance of a multi-circuit evaporator. The results showed that evaporator capacity under a non-uniform air velocity distribution was 7.78% less than that under a uniform air velocity distribution.…”

“…However, in actual ACHEs, uniform airflow is the exception rather than the rule [3]. Non-uniform flow distributions, so-called maldistributions of flow, may have dramatic consequences on the thermal performance of heat exchangers [4,5]. As early as 1973, Dobryakov et al [6] investigated the effect of nonuniform airflow on the performance of ACHEs with a tube-side fluid temperature drop, and derived a one-dimensional model for prediction of performance deterioration.…”

Investigation of heat exchanger inclination in forced-draught air-cooled heat exchangers

“…More recently, Song et al [13] studied the effects of nonuniform flow on the performance of a multi circuit evaporator. They found that the nonuniform flow reduced the capacity by approximately 8%.…”