In this study, we aimed to assess the spatial variability of microclimate inside a closed compost-bedded pack barn (CBP) with a negative ventilation system during summer and winter. The research was carried out in a CBP located in the Zona da Mata region, Minas Gerais, Brazil. For each of the stations analyzed, the following environmental mean variables observed inside a CBP were measured: air dry-bulb temperature (tdb), air relative humidity (RH), and windspeed, Temperature-Humidity index, and specific enthalpy. The kriging maps showed that the most critical housing conditions in the thermal environment were found, mainly, from the central part of the CBP, close to the exhaust fans. The analyses also pointed out that the system presented temperature gradients along the length, up to 3°C. During the summer afternoon, the entire region of the CBP was in a discomfort situation (tdb>26°C; RH>75%). During the winter, the measured environmental data remained within the comfort zone throughout the facility. However, probably due to the lack of thermal insulation of the material used to close the sides of the CBP, it did not allow spatial thermal uniformity for both seasons. It was also inefficient to keep the animals within the comfort zone for lactating cattle during the critical summer period.

Spatial analysis of microclimatic variables in compost-bedded pack barn with evaporative tunnel cooling / ANDRADE, RAFAELLA R.; TINÔCO, ILDA DE FÁTIMA F.; DAMASCENO, FLÁVIO A.; FERRAZ, GABRIEL A.S.; FREITAS, LETÍCIA CIBELE S.R.; FERREIRA, CECÍLIA DE FÁTIMA S.; BARBARI, MATTEO; TELES JUNIOR, CARLOS G.S.. - In: ANAIS DA ACADEMIA BRASILEIRA DE CIÊNCIAS. - ISSN 0001-3765. - ELETTRONICO. - 94:(2022), pp. 1-23. [10.1590/0001-3765202220210226]

Spatial analysis of microclimatic variables in compost-bedded pack barn with evaporative tunnel cooling

BARBARI, MATTEO;
2022

Abstract

In this study, we aimed to assess the spatial variability of microclimate inside a closed compost-bedded pack barn (CBP) with a negative ventilation system during summer and winter. The research was carried out in a CBP located in the Zona da Mata region, Minas Gerais, Brazil. For each of the stations analyzed, the following environmental mean variables observed inside a CBP were measured: air dry-bulb temperature (tdb), air relative humidity (RH), and windspeed, Temperature-Humidity index, and specific enthalpy. The kriging maps showed that the most critical housing conditions in the thermal environment were found, mainly, from the central part of the CBP, close to the exhaust fans. The analyses also pointed out that the system presented temperature gradients along the length, up to 3°C. During the summer afternoon, the entire region of the CBP was in a discomfort situation (tdb>26°C; RH>75%). During the winter, the measured environmental data remained within the comfort zone throughout the facility. However, probably due to the lack of thermal insulation of the material used to close the sides of the CBP, it did not allow spatial thermal uniformity for both seasons. It was also inefficient to keep the animals within the comfort zone for lactating cattle during the critical summer period.
94
1
23
Goal 12: Responsible consumption and production
ANDRADE, RAFAELLA R.; TINÔCO, ILDA DE FÁTIMA F.; DAMASCENO, FLÁVIO A.; FERRAZ, GABRIEL A.S.; FREITAS, LETÍCIA CIBELE S.R.; FERREIRA, CECÍLIA DE FÁTIMA S.; BARBARI, MATTEO; TELES JUNIOR, CARLOS G.S.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2158/1277099
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