Bulk soybean grain mass temperature in warehouses with isolated vents and vent-exhaust combined systems/Temperatura da massa de graos de soja a granel em armazens com respiros isolados e em conjunto com exaustores

• Published in: Ciência rural Vol. 47; no. 1
• Main Authors: de Pontes, Eliza Rigoni, Neto, Pedro Henrique Weirich, Justino, Altair, Rocha, Carlos Hugo, Garcia, Luiz Claudio
• Format: Journal Article
• Language: English
• Published: Universidade Federal de Santa Maria 01.01.2017
• Subjects: Brasil
• ISSN: 0103-8478; 1678-4596
• DOI: 10.1590/0103-8478cr20151157

This study aimed to compare the temperatures in the mass of bulk soybeans (Glycine max) in warehouses with isolated vents and vent-combined exhaustion. A completely randomized design was used, with two treatments and ten repetitions. Treatments consisted of warehouse with curved vents and warehouse with curved + static exhaust vents. Each repetition contained the average of all readings in three days in all cables of the warehouse part under study, totaling 10 repetitions per month. The variable analyzed was the temperature in the grain mass in the lower, middle and upper parts of the warehouse from January to May 2012. The environment temperature and humidity were also registered. Static hoods, along with curved vents on the roof of the warehouse showed a tendency to reduce the temperature of the soybean mass with decrease in environmental temperature and increase in relative environmental humidity. Key words: static exhaust, Glycine max, post-harvest and curved vents. Este trabalho teve por objetivo comparar as temperaturas na massa de graos de soja (Glycine max) a granel, em armazens verticais metalicos munidos de respiros isolados e em conjunto com exaustores. Foi utilizado o delineamento experimental inteiramente casualizado, sendo dois tratamentos com dez repeticoes. Os tratamentos consistiram em armazem com respiros curvos e armazem com respiros curvos + exaustores estaticos. Cada repeticao continha a media das leituras de tres dias em todos os cabos do setor do armazem em estudo, totalizando as 10 repeticoes por mes. A variavel analisada foi a temperatura na massa de graos nos tercos inferior, medio e superior do armazem, do mes de janeiro ao mes de maio de 2012. Tambem se registrou a temperatura e umidade relativa ambiente. Conclui-se que os exaustores estaticos, agregados aos respiros curvos no teto do armazem, apresentam tendencia de reducao da temperatura na massa de graos de soja com decrescimo da temperatura e aumento da umidade relativa do ar ambiente. Palavras-chave: exaustores estaticos, Glycine max, pos-colheita e respiros curvos.