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Description: Ventilating dairy barns in cold weather without adding supplemental heat has often been unsatisfactory. In many cases, the heat produced by the cattle is insufficient to maintain desirable barn temperatures at the ventilation rate necessary to prevent moisture build-up. Pattie (1966) and Pattie and Lederer (1973) proposed the use of a porous ceiling air inlet which could allow some of the moisture to diffuse from the animal room, thereby permitting a reduction of the ventilation rate and consequent ventilation heat loss. A recent and more extensive literature review of laboratory studies and actual farm installations was given by Honey and Wrubleski (1977). Previous papers by Turnbull and Hickman (1974) and by Turnbull and Darisse (1975) de scribed the winter performance of porous ceiling ventilation systems the latter paper reviewed winter inside-outside temperature correlations in an exhaust-ventilated free-stall dairy barn at Normandin, Quebec. This particular barn was 15 m wide and fitted with a porous ceiling. A 9.6-m wide longitudinal strip down the center of the ceiling consisted of 63 mm of fiberglass

Keywords: cold weather conditions in a free-stall barn fitted with a porous ceiling
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Citation: Munroe, J. A., Wolynetz, M. S., Turnbull, J. E. and J. P. F. Darisse 1981. COLD WEATHER CONDITIONS IN A FREE-STALL BARN FITTED WITH A POROUS CEILING. Canadian Agricultural Engineering 23(1):17-22.
Volume: 23
Issue: 1
Pages 17 - 22
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Date: 1981
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Publication type: Journal
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Coverage: Canada
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