运输断奶猪的车辆内外温差实验研究

IF 4.4 1区 农林科学 Q1 AGRICULTURAL ENGINEERING
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引用次数: 0

摘要

猪的运输对保持适当的车内热量条件提出了巨大挑战。本研究在丹麦进行了 36 次实地试验,分别收集了一辆经过认证的牲畜运输车辆在 8 小时和 23 小时旅程中的数据。本研究旨在调查运输过程中牲畜车内的空气温度,以及以下五个因素对 DT(车内外空气温度差)的影响:车厢位置、甲板高度、自然通风开口高度、风速和车速。车厢位置是影响车内空气温度的最重要因素。在拖车前部车厢观察到的空气温度超过 30 °C 的最大时间百分比为 13.6%。在同一甲板上,货车前后车厢平均 DT 的最大差异为 11.0 ± 0.67 °C。货车(70 厘米对 90 厘米)和拖车(60 厘米对 80 厘米)两个调查甲板高度之间的平均 DT 最大差异分别为 1.2 ± 0.39 °C和 0.9 ± 0.26 °C。随着自然通风开口高度和风速的增加,DT 下降,而 DT 对车速不敏感。在最后 4 次旅程中,安装在前隔墙上的额外传感器显示,车厢内的温度变化很大(最高达 12 °C)。需要进一步研究如何有效监测猪运输车辆的热状况并及时进行车内环境控制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Experimental study on temperature difference between the interior and exterior of the vehicle transporting weaner pigs

Transporting pigs poses a significant challenge in maintaining proper interior thermal conditions. This study conducted 36 field trials run in Denmark and collected data from a certified livestock vehicle, during journeys of 8 h and 23 h respectively. This study aims to investigate the air temperature inside a livestock vehicle during the transportation and the influence of five factors on DT (difference in air temperature between interior of the vehicle and exterior): compartment location, deck height, height of openings for natural ventilation, wind speed and vehicle speed. The compartment location was the most important influencing factor of interior air temperature. The maximum percentage of time when air temperature exceeded 30 °C was 13.6% observed in the front compartment of trailer. The maximum difference in mean DT between the front and rear compartments at the same deck was 11.0 ± 0.67 °C occurred in the lorry. The maximum differences in mean DT between the two investigated deck heights were 1.2 ± 0.39 °C in the lorry (70 vs. 90 cm) and 0.9 ± 0.26 °C in the trailer (60 vs. 80 cm), respectively. The DT decreased with increasing height of opening for natural ventilation and wind speed, while the DT was insensitive to vehicle speed. Extra sensors installed on the front partition wall during the last 4 journeys showed significant temperature variability (up to 12 °C) within compartment. Further studies identifying the efficient monitoring of thermal condition and prompt interior environmental control are needed in vehicles for pig transport.

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来源期刊
Biosystems Engineering
Biosystems Engineering 农林科学-农业工程
CiteScore
10.60
自引率
7.80%
发文量
239
审稿时长
53 days
期刊介绍: Biosystems Engineering publishes research in engineering and the physical sciences that represent advances in understanding or modelling of the performance of biological systems for sustainable developments in land use and the environment, agriculture and amenity, bioproduction processes and the food chain. The subject matter of the journal reflects the wide range and interdisciplinary nature of research in engineering for biological systems.
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