Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

Copyright © Wydawnictwo Akademii Rolniczej we Wroclawiu, ISSN 1505-0297

Kuczyński T. , Przybyła K. 2002. POROUS CEILING AIR INLET AS A POTENTIAL SOURCE OF UNCONTROLLED AIR EXCHANGE AT NURSERIES WITH EXHAUST MECHANICAL VENTILATION , EJPAU 5(1), #02.
Available Online: http://www.ejpau.media.pl/volume5/issue1/engineering/abs-02.html

ABSTRACT

The purpose of the research was to compare uncontrolled air exchange at nurseries with different air inlet solution. Four identical 400 m² nursery departments were investigated. Three of them used porous ceiling as an air inlet, with different area of ceiling designed to be permeable. The areas of porous ceiling tested were 300, 150 and 75 m² respectively. In fourth department ventilation air entered the room through, also located in the ceiling, high speed inlet systems. Actual air exchange in the departments was evaluated from H₂O balance. The data required for calculation, i.e. inside and outside temperatures and humidities were being continuously monitored and registered from mid of December, 2000 to early February, 2001 to include first 5 weeks after moving piglets to each departments. Propane consumption was checked every day. U – value for the outside walls was calculated and additionally checked by means of thermovision. The number of piglets moved t

Key words: pigs, nurseries, weaners, porous ceilings, uncontrolled air exchange.

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