白菜在冷藏室中的半冷却时间

IF 1 Q3 HORTICULTURE
R. Tůma, J. Goliáš
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引用次数: 0

摘要

通过半冷却时间来评估储存在大容量冷却室中的容器中的卷心菜头。通过穿刺温度计测量头部及其附近的周围空气的温度。最短的半冷却时间是在蒸发器附近测量的;相反,在冷却室另一侧的容器中测量了非常长的半冷却时间。测量值长了一个数量级。当卷心菜头在离蒸发器最远的容器内,没有被一层堆叠的容器覆盖时,热传递直接进入环境空气,因此,该容器中的半冷却时间不是最长的。通过半冷却时间(以小时为单位)和冷却结束时间(以h为单位)评估的甘蓝头冷却与储存温度(0°C)成正比。在距离蒸发器14米的容器中,在底部位置,但未被其他容器覆盖的封头的半冷却时间为194.7小时,总时间为973.5小时,因为在容器周围循环的空气永久冷却了储存的封头。计算出的总冷却时间将延长5.0倍。对于位于相同位置但距离蒸发器7m的菜头,底部位置的散热非常慢,半冷却时间为225小时,总时间为1125小时(46.88天),这是菜头冷却时间最长的一次。关键词:白菜头;制冷;容器与蒸发器的距离
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Half-cooling time of cabbage stored in a refrigerated room
Cabbage heads stored in containers in a high-capacity cooling room were evaluated by the half-cooling times. The temperature of the heads and the surrounding air in their immediate vicinity was measured by a puncture thermometer. The shortest half-cooling times were measured in the immediate vicinity of the evaporator; in contrast, very long half-cooling times were measured in a container on the opposite side of the cooling room. The measured values were longer by one order of magnitude. When cabbage heads are inside the container furthest from the evaporator, without being covered by a layer of stacked containers, then the heat transfer passes directly into the ambient air, thus, the half-cooling times in this container were not the longest. The head cabbage cooling, evaluated by the half-cooling time (in hours) and the end of cooling time (in hours), in the chambers to a storage temperature (0 °C) are directly proportional. The heads in a container 14 m from the evaporator, in the bottom position, but not covered by other containers had a half-cooling time of 194.7 hours, with a total time of 973.5 h, because the air circulating around the container, permanently cooled down the stored heads. The total calculated cooling time will be extended 5.0 times. For the heads in the same position, but 7 m from the evaporator, the heat dissipation at the bottom position was so slow that the half-cooling time was 225 hours, and the total time was 1 125 hours (46.88 days), which was the longest cooling time for the cabbage heads. Kewords: head cabbage; refrigeration; distance of container from evaporator
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来源期刊
Horticultural Science
Horticultural Science Horticulture-园艺
CiteScore
2.20
自引率
0.00%
发文量
23
审稿时长
>12 weeks
期刊介绍: The journal publishes results of basic and applied research from all areas of horticulture, fruit-growing, vegetable-growing, wine-making and viticulture, floriculture, ornamental gardening, garden and landscape architecture, concerning plants that are grown under the conditions of European temperate zone, or field plants that are considered as horticultural cultures. Original scientific papers, short communications and review articles are published in the journal. Papers are published in English (British spelling).
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