Development and validation of an air recirculated ventilation system, Part 1: Application of system in a pig farm and evaluation of pig productivity during winter

Jun Gyu Kim, In Bok Lee*, Andre Aarnink, Bong Joo Lee, Deuk Young Jeong, Hyo Hyeog Jeong, Se Han Kim, Bong Kuk Lee, Dong Kyu Lee

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)

Abstract

The pig industry needs strategies to solve problems such as poor rearing environment, diseases, odours, and high energy loads. In this study, an air recirculated ventilation system (ARVS) was developed with optimally designed modules and an operating algorithm. Validation experiments conducted in winter and reported here but experiments carried out during the summer and during changes in season and reported in Kim et al. (2023). Environmental data (air temperature, relative humidity, carbon dioxide, ammonia, and ventilation rate) were automatically collected during winter and livestock disease and stress of piglets were evaluated by sampling. In winter the ARVS reused internal heat energy to satisfy the pig thermal demand. Each module of ARVS modules was designed and integrated based on the previous researches. Environmental factors were monitored in real time, and then ARVS was automatically controlled using developed algorithm. The ventilation rate of the ARVS was about 3 times more than that of the conventional ventilation system (CVS). Air temperature, relative humidity, and ammonia gas inside the ARVS piglet room were optimally maintained. Also, by reusing about 73% of internal energy, it was possible to reduce heating costs. The average concentrations of ammonia and odour measured at the outlet were 2.1 ppm and 251 OU. Piglets of the ARVS weighed 1.6 kg more than those of the CVS. The disease detection rate was <1% with beneficial bacteria increased and harmful bacteria decreased.

Original languageEnglish
Pages (from-to)106-130
Number of pages25
JournalBiosystems Engineering
Volume230
DOIs
Publication statusPublished - Jun 2023

Keywords

  • Air recirculated ventilation system (ARVS)
  • Energy saving
  • Livestock disease
  • Odour emission
  • Optimal environment
  • Pig productivity

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