Browsing by Subject "High pressure humidifier"

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Untersuchung zu verschiedenen Zuluftführungs- und Kühlungsmöglichkeiten in Mastschweineställen
(2013) Pertagnol, Joachim; Jungbluth, Thomas
The keeping of farm animals, especially of pigs, is often in the public spotlight. A particular focus is on the housing conditions for fattening pigs and related noxious gas emissions, since one of the major problems is maintaining a good stable climate in summer. The solution to this problem can only be found in air cooling systems. Aside this, farmers not only concentrate on animal welfare, but on cost- effectiveness and efficiency. Considering this, there are results available for some cooling systems. However, most of the investigations on such systems have been carried out at different locations and therefore inhibit a direct comparison of the systems. With this in mind, this paper will compare different air supply and cooling systems in pig fattening houses using the parameters energy consumption, concentration and emission of noxious gases, animal welfare, and cost-effectiveness. The main systems studied were the high pressure humidifier, cooling pad, underfloor air inlet and supply, and the reference compartment (without cooling); this research was carried out on the research farm Landesanstalt für Schweinezucht (LSZ) Boxberg. At the beginning of the experiments, the four compartments differed only in the way in which the air was channelled into the compartments (porous ceiling (3 times), underfloor air inlet through the central control passage (once)), and in the number of their outer walls. One compartment held 125 animals per fattening period, and there were six fattening periods in total. Every three weeks, 125 new animals were put into one of the four compartments. The earth tube heat exchanger, the high pressure humidifier and the underfloor air inlet were examined under practical conditions on three working farms.