Air Velocity Fields Distribution in Tied Cows Building by Different Roof Cooling Fans Working Regimes
Raspored brzinskih polja vazduha u objektu za vezano držanje krava sa višerežimskim krovnim ventilatorima
View/ Open
Author
Topisirovic, Goran
Radojicic, Dusan
Radivojevic, Dusan
Kalanovic Bulatovic, Branka
Keywords
fan working regimebuilding ventilation
microclimate conditions
breeding zone
režim rada ventilatora
ventilacija objekta
mikroklimatski uslovi
zona disanja
Metadata
Show full item recordAbstract
Analysis of roof cooling fans function in several working regimes is
presented. The main goal of the research was to define the influence of fan working
regime on distribution of air velocity fields. During the different fan speeds, the
measurements were conducted in characteristic building sections. Air flow velocity
measurements were conducted in were 48 measuring points selected, in 4 hight levels,
which totally covered the room. Comparative analysis of air flow velocities showed the
effects of fans function in particular zones, as well as potential problems that ventilation
system may provide. It was concluded that this fans disposal doesn’t achieve satisfactory
results in every experimental setup. Particular fans operation regimes create air flow
velocities above the thresholds. The change of fans setup was recommended, as well as
use of lower fans working speeds. Analiza rada višerežimskih ventilatora u objektu za vezano držanje krava imala je
za cilj da odredi distribuciju brzinskih polja vazduha, kao osnove za provetravanje –
ventilaciju objekta. Ispitivan je uticaj ventilatora pri različitim režimima rada (različitim
brzinama rotora), pri čemu su merenja vršena u karakterisitčnim zonama objekta. Merenje
brzine strujanja vazduha je izvršeno u 48 mernih tačaka, na 4 nivoa merenja, čime je objekat
u potpunosti pokriven. Analiza rezultata merenja je otkrila kakvi su efekti rada ventilatora u
pojedinim zonama objekta, kao i potencijalne probleme primene ovakvog sistema
ventilacije. Zaključak je da ovakva postavka ventilatora ne daje u potpunosti zadovoljavajuće
rezultate, kao i da pojedini režimi rada ventilatora proizvode strujanja vazduha koja po
intezitetu daleko premašuju dozvoljene vrednosti. Preporuka je da se postavka ventilatora
promeni, kao i da se ventilatori koriste uglavnom u nižim režimima rada.