|Document ID (ISN)||31868|
|ISSN - Serial title
||Mehanizacija i ėlektrifikacija socialističeskogo sel'skogo hozjajstva
|Convention or series no.
||Device for controlling the concentration of toxic gases
||Ustrojstvo dlja regulirovanija koncentracii jadovityh gazov [in Russian]|
||Dec. 1978, No.12, p.46-48. Illus. 3 ref.
||An air-conditioning installation for cattle sheds and poultry farms which automatically regulates air temperature and humidity has been equipped with a gas analyser which, by means of a relay, switches on ventilation fans as soon as the atmospheric concentration of ammonia in the premises exceeds the displayed threshold. Description of the regulatory system which includes safety relays to prevent excessive lowering of the air temperature, and an acoustic warning signal which sounds if the threshold concentration is considerably exceeded. The electrical system is reproduced, together with the equations used for calculating the values to be regulated and a graph illustrating the response of the regulator. The principle described can be applied to other toxic gases.
||livestock rearing; ammonia; ventilation; toxic gases; regulating systems
||description of equipment; air conditioning; continuous monitoring; mathematical analysis; poultry farming
||Heating, ventilation and climate
|Broad subject area(s)