Technical systems for agricultural and meliorative machinery cabs climatization

Abstract

In this paper are presented several types of A/C (Air Condition) systems for climatization of modern agricultural and meliorative machinery cabs. Systems are selected according to the applied cooling fluid, in purpose of technical and exploitation characteristics comparison. Possibilities of two cooling fluids application, both R134a (tera fluoro ethane CH2FCF3) and CO2 (carbon dioxide), are considered and their thermo-mechanical and exploitation characteristics are compared, as well as their influence in sense of ecology and global warming. It should be noticed that CO2 is used in last generation systems and has certain advantages in ecology, which will be mentioned in this paper. Technical and exploitation characteristics of analyzed A/C systems will be analyzed in terms of ergonomic principles that those systems should satisfy, also.

U radu je predstavljeno nekoliko tipova A/C (Air Condition) sistema za klimatizaciju kabina savremenih poljoprivrednih i meliorativnih mašina. Izbor sistema je napravljen na bazi rashladnog fluida koji se koristi kao radna materija, a sa ciljem poređenja tehničkih i eksploatacionih karakteristika. Analizirane su mogućnosti primene dva rashladna fluida R134a (terafluoretan CH2FCF3) i CO2 (ugljendioksid), sagledane i poređene njihove termomehaničke i eksploatacione karakteristike, kao i osobine njihovog uticaja sa stanovišta ekologije i globalnog zagrevanja. Treba napomenuti da se CO2 koristi u sistemima poslednje generacije i da poseduje određene prednosti sa stanovišta ekologije o kojima će u radu biti reči. Tehničke i eksploatacione karakteristike analiziranih A/C sistema biće analizirane i sa strane ergonomskih zakonitosti koje ovi sistemi treba da ispune.