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Prediction of sprinkler off-times during frost protection of apple buds: a heat transfer model



Prediction of sprinkler off-times during frost protection of apple buds: a heat transfer model



Transactions of the ASAE American Society of Agricultural Engineers 26(5): 1430-1434



A heat transfer model was developed that predicts the maximum off-time of a pulsed overhead sprinkler system used for frost protection of apple buds. The model predicts the time required to freeze a thin, evenly distributed layer of water encapsulating a bud. Two independent freezing fronts develop; one freezing outwards from the solid-liquid interface, and the other, inwards from the air interface. When the 2 freezing fronts meet, heat generation stops and the bud begins to cool.

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Accession: 001237158

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