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2025 Vol.34, Issue 4 Preview Page

Original Articles

Assessment of Evaporative Cooling Pads Operation on Thermal Stress Reduction in Broiler Houses Using BES Technique

BES 시뮬레이션 기법을 이용한 쿨링패드의 육계사 고온스트레스 저감 효과 분석

Taehwan Ha1*
하 태환1*
1Assistant Professor, Department of Agricultural and Rural Engineering, College of Agriculture and Life Science, Chungnam National University, Daejeon 34134, Korea
1충남대학교 지역환경토목학과 조교수
*Corresponding Author
31 October 2025. pp. 437-443
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Abstract

This study evaluated the effectiveness of evaporative cooling pads in mitigating heat stress in mechanically ventilated broiler houses using a Building Energy Simulation (BES) approach. The developed BES model was validated with field data collected from a mechanical-ventilated broiler house in Jeongeup, South Korea. Validation results satisfied established criteria, with air temperature showing CvRMSE of 2.93－3.69% and MAPE of 2.20－3.17%, while THI showed RMSE of 1.308－2.157 and MAPE below 2.1%. Subsequently, 3,072 simulation cases were conducted by combining factors of regional location, building length, wall and roof thermal transmittance, broiler body weight, cooling pad operation (ON/OFF), and weather scenarios, under summer ventilation rates applied dynamically on an hourly basis. Analysis of variance indicated that regional location and cooling pad operation significantly affected heat stress, whereas building size, insulation level, and broiler weight showed no significant differences. The accumulated duration above the THI threshold of 78 decreased across all regions when cooling pads were operated. Post-hoc tests revealed that Jeju consistently formed the high-risk group, while Wonju (no cooling) and Incheon (with cooling) were classified as low-risk regions. In contrast, the annual maximum THI decreased only slightly (typically <1) under cooling conditions, suggesting limited mitigation of extreme peaks.

Keywords
building energy simulation
evaporative cooling system
extreme weather hear stress
TMY

본 연구는 기계식 환기 육계사에서 증발식 쿨링패드가 고온 스트레스 완화에 미치는 효과를 건물에너지시뮬레이션(BES) 기법으로 평가하였다. 개발된 BES 모델을 전북 정읍에 위치한 강제환기식 육계사 현장실험 자료로 검증한 결과, 온도는 CvRMSE 2.93－3.69%, MAPE 2.20－3.17%를, THI는 RMSE 1.308－2.157, MAPE 2.1% 미만을 보여 검증 기준을 충족하였다. 이후 지역, 건물 길이, 벽체 및 지붕 열관류율, 육계 체중, 쿨링패드 가동 여부, 기상 시나리오를 조합한 3,072개 케이스를 하절기 환기량을 적용하여 시간별로 동적으로 모의하였다.

분산분석 결과, 지역과 쿨링패드 가동 여부가 고온 스트레스에 유의한 영향을 미쳤고, 건물 규모, 단열수준, 체중은 유의한 차이가 도출되지 않았다. THI 기준 78을 초과한 누적 시간은 쿨링패드 가동 시 전 지역에서 감소하였으며, 사후검정에서 제주 지역은 쿨링패드의 가동과 상관없이 일관되게 가장 많이 기준을 초과하였다. 이와 함께 원주와 인천 지역은 THI 기준을 가장 적게 초과하는 지역으로 분류되었다. 반면 연간 최대 THI는 쿨링패드 가동 시 소폭(대부분 1 미만)만 감소하여, 최대 THI 저감 효과는 제한적인 것으로 분석되었다.

종합하면, 증발식 쿨링패드는 장시간 고온 노출을 효과적으로 단축하나, 피크 THI 저감은 제한적이므로 극한 상황에서는 보조 냉방과의 복합 적용이 필요함을 알 수 있었다. 아울러 본 연구는 지역 기후를 고려한 육계사 설계 및 운영 의사결정에 BES가 유효한 도구임을 입증한다.

키워드
건물에너지시뮬레이션
고온스트레스
극한기상
쿨링패드
표준기상년
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Information
  • Publisher :The Korean Society for Bio-Environment Control
  • Publisher(Ko) :(사)한국생물환경조절학회
  • Journal Title :Journal of Bio-Environment Control
  • Journal Title(Ko) :생물환경조절학회지
  • Volume : 34
  • No :4
  • Pages :437-443
  • Received Date : 2025-10-02
  • Revised Date : 2025-10-12
  • Accepted Date : 2025-10-13
  • DOI :https://doi.org/10.12791/KSBEC.2025.34.4.437
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