The influence of the passive evaporative cooling vest on a chemical industry workers and physiological strain level in hot conditions

• Published in: Hemijska industrija
• Main Authors: Karkalić, Radovan, Jovanović, Dalibor B., Radaković, Sonja S., Rajić, Dušan, Petrović, Biljana V., Ivanković, Negovan, Senić, Željko
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Association of Chemical Engineers of Serbia 2015
• Subjects: chemical industry; heat stress; cooling vest; working uniform; physiological strain; Hemijska industrija; Toplotni stres; Rashladni prsluk; Radna odeća; Fiziologija napora; Arctic
• Online Access: http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2888; https://doi.org/10.2298/HEMIND140705079K; http://TechnoRep.tmf.bg.ac.rs/bitstream/id/951/2885.pdf

The present study was conducted in order to evaluate efficiency of a personal body cooling system based on passive evaporative technologies and its effects on test subjects and their psycho-physiological suitability during exertional heat stress in hot environment. Performed results are based on conducted tests in climatic chamber in the Military Medical Academy Institute of Hygiene in Belgrade. Ten male test subjects were subjected to exertional heat stress test consisted of walking on motorized treadmill at a speed of 5 km/h in hot environment. Tests were performed with and without cooling system. As a physiological strain indicator the following parameters have been determined: mean skin temperature, tympanic temperature, heart rate and sweat rate. Results confirmed that cooling vest worn over the clothes was able to attenuate the physiological strain levels during exercise, when compared to identical exposure without the cooling system. Rad predstavlja rezultate naučnih istraživanja na polju efikasnosti sistema za hlađenje tela iz grupe pasivnih sistema na bazi isparavanja i njegov uticaj na fiziološku podobnost ljudi u uslovima izloženosti fizičkom naporu i ekstremno visokim temperaturama. Podaci i dobijeni rezultati zasnovani su na ispitivanjima sprovedenim u klimatskoj komori Instituta za higijenu VMA u Beogradu. Deset ispitanika muškog pola dobrovoljno je podvrgnuto testovima toplotnog opterećenja usled fizičkog napora, izazvanog hodanjem na pokretnoj traci sa brzinom hoda od 5 km/h, u toploj sredini (temperatura vazduha 40 °C). Testovi su realizovani sa ispitanicima srednjih godina (27.2±2.6), sličnih antropometrijskih parametara (74±7 kg, 184±9 cm), u varijanti nošenja radne odeće bez ikakvog rashladnog sistema (opcija NoCOOL) i uz upotrebu rashladnih prsluka za hlađenje tela, model Arctic Heat® (opcija ACOOL). Kao pokazatelji fiziološkog opterećenja određivane su: srednja temperatura kože (Tsk), timpanična temperatura (Tty) i frekvencija srčanog rada (HR), dok je intenzitet znojenja (SwR) izračunat ...