محاسبه نرخ تهویه سالن پرورش جوجه‌های گوشتی به روش موازنه کربن‌دی‌اکسید و مقایسه آن با روش اندازه گیری مستقیم

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه مهندسی مکانیک بیوسیستم، دانشکده کشاورزی، دانشگاه فردوسی مشهد

2 استاد تمام وقت و عضو هیئت علمی گروه مهندسی مکانیک بیوسیستم. دانشکده کشاورزی، دانشگاه فردوسی مشهد.

چکیده

نرخ تهویه سالن‌های پرورش مرغ گوشتی به دو روش مستقیم و غیر ‌مستقیم قابل محاسبه است. در این پژوهش برای مقایسه‌ی این دو روش، از یک مرغداری با ظرفیت 18 هزار قطعه جوجه گوشتی در شهرستان سبزوار استفاده شد. ابتدا نرخ تهویه با تعیین سرعت هوای خروجی در هر یک از فن‌ها در 24 نقطه و محاسبه سطح عبور هوای هر فن، به روش مستقیم اندازه‌گیری شد، سپس نرخ تهویه به روش موازنه کربن ‌دی‌اکسید نیز با محاسبه نرخ تولید گاز CO2 توسط جوجه­ها و ردیابی گاز CO2 در ورودی‌ها و خروجی‌های هوای سالن و استفاده از معادلات تعادل گاز در حجم کنترل محاسبه شد. نتایج نشان داد که تفاوت دو روش اندازه گیری در شرایط مختلف سالن کمتر از 22 درصد (12500 متر مکعب در ساعت) بوده و با افزایش نرخ تهویه، تفاوت دو روش تا 2 درصد نیز کاهش می‌یابد.

کلیدواژه‌ها


عنوان مقاله [English]

Calculating the Ventilation Rate of Broiler Chick Salon by Carbon Dioxide Balance Method and Comparison with Direct Measurement Method

نویسندگان [English]

  • Mousareza Baghani 1
  • Mohammad Hossein Aghkhani 2
1 Department of Biosystems Mechanical Engineering, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
2 Professor in Department of Mechanical Engineering Biosystem. Faculty of Agriculture. Ferdowsi University Of Mashhad. Iran.
چکیده [English]

Ventilation rate of the poultries can be calculated by directly and indirectly method. This research was carried out in poultry with population of 18,000 broiler chicks in Sabzavar to compare these two methods. The output air velocity was measured in each of the fans at 24 points of the fan surface to measure the ventilation rate directly. The average speed at the effective surface of the fans was also calculated. The ventilation rate in the CO2 equilibrium method was obtained by calculating the CO2 production rate of chicks and measuring the CO2 concentration at the air inlets and outlets of the poultry, using the equations of gas balance in control volume. The results showed that the difference in two methods of measurement in different conditions of the salon was less than 22% (12500 m3/h) and with increasing ventilation rate, the difference between the two methods decreased to 2%.

کلیدواژه‌ها [English]

  • ventilation
  • Poultry
  • carbon dioxide balance method
  • direct
  • indirect
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