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2025 Vol.67, Issue 4 Preview Page
Ventilation Rate Measurement in a Naturally Ventilated Cattle Barn Using Arduino-Based Anemometers

아두이노 기반 풍속계를 활용한 자연환기식 우사의 환기량 측정

Chae-rin Leea
,
Ji-yeon Parka
,
Se-yeon Leeb
,
Jinseon Parkc
,
Kehinde Favour Daniela
,
Junsu Parkd
,
Jun-yeob Leee
,
Rack-woo Kimf
,
Se-woon Hongg†
이 채린a
,
박 지연a
,
이 세연b
,
박 진선c
,
Daniel Kehinde Favoura
,
박 준수d
,
이 준엽e
,
김 락우f
,
홍 세운g†
aGraduate Student, Department of Rural and Bio-systems Engineering & Education and Research Unit for Climate-Smart Reclaimed-Tideland Agriculture (BK21 four), Chonnam National University
bPh.D. Student, Department of Rural and Bio-systems Engineering & Education and Research Unit for Climate-Smart Reclaimed-Tideland Agriculture (BK21 four), Chonnam National University
cResearch Professor, AgriBio Institute of Climate Change Management, Chonnam National University
dResearcher, Smart Livestock Environment Division, National Institute of Animal Science
eSenior Researcher, Smart Livestock Environment Division, National Institute of Animal Science
fAssociate Professor, Department of SmartFarm Engineering, Kongju National University
gAssociate Professor, Department of Rural and Bio-systems Engineering & Education and Research Unit for Climate-Smart Reclaimed-Tideland Agriculture (BK21 four), Chonnam National University
†Corresponding author Tel.: +82-62-530-2183 Fax: +82-62-530-2150 E-mail: hsewoon@jnu.ac.kr
2025. pp. 51-61
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Abstract

Naturally ventilated (NV) cattle barns contribute significantly to national ammonia emissions, which are precursors to secondary particulate matter in the atmosphere. However, accurately estimating ammonia emissions from NV buildings is challenging due to variations in ventilation rates caused by fluctuating nature of the wind. This study developed a cost-efficient ultrasonic anemometer for direct measurement of ventilation rates in NV cattle barns. The device underwent wind tunnel testing for accuracy validation and used for field experiments conducted in the studied cattle barn for three months. Measured ventilation rates were compared with estimates obtained from the CO2 tracer gas method and the wind pressure-thermal buoyancy (WT) method to assess measurement reliability. The results indicated that ventilation rates were strongly influenced by external wind speed, with peak values occurring between 12:00 PM and 3:00 PM. The ultrasonic anemometer demonstrated a high correlation with direct wind speed measurements. The CO2 tracer gas method showed close agreement with direct measurements, with only a 4% difference, indicating its reliability under specific conditions. In contrast, the WT method tended to underestimate ventilation rates, highlighting the need for further calibration. The findings provide valuable insights into ventilation characteristics in NV cattle barns and offer a foundation for improving ammonia emission measurement in NV buildings.

Keywords
Ammonia emission
CO2 tracer gas method
emission factor
natural ventilation
WT method
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Information
  • Publisher :The Korean Society of Agricultural Engineers
  • Publisher(Ko) :한국농공학회
  • Journal Title :Journal of Korean Society of Agricultural Engineers
  • Journal Title(Ko) :한국농공학회논문집
  • Volume : 67
  • No :4
  • Pages :51-61
  • Received Date : 2025-04-11
  • Revised Date : 2025-06-19
  • Accepted Date : 2025-06-26
  • DOI :https://doi.org/10.5389/KSAE.2025.67.4.051
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