The use of heated models to describe the thermal environment in shelters for farm animals
The dry bulb air temperature is still the most commonly used parameter to characterize the thermal environment, even though it disregards the effect of air velocity and the thermal properties of the flooring material on the heat loss from the animal. Measurements in the laboratory confirmed that an...
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| Format: | Article |
| Language: | English |
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Scientific Agricultural Society of Finland
1992-12-01
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| Series: | Agricultural and Food Science |
| Online Access: | https://journal.fi/afs/article/view/72466 |
| _version_ | 1819150844904341504 |
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| author | Markus Pyykkönen |
| author_facet | Markus Pyykkönen |
| author_sort | Markus Pyykkönen |
| collection | DOAJ |
| description | The dry bulb air temperature is still the most commonly used parameter to characterize the thermal environment, even though it disregards the effect of air velocity and the thermal properties of the flooring material on the heat loss from the animal. Measurements in the laboratory confirmed that an uninsulated heated model with an overall thermal resistance of 0.11 m 2 KW-1 is sensitive enough to differentiate between changes in conduction, convection and radiation conditions. Measurements on farms showed that the heat loss simulated by mechanical models gives a more diversified description of the thermal environment than the dry bulb air temperature. Although the uninsulated mechanical model is not a standardized device, it is a useful method for measuring the thermalenvironment especially under sheltered winter conditions. |
| first_indexed | 2024-12-22T14:23:58Z |
| format | Article |
| id | doaj.art-cbee547923aa432cadf3ab7e671af5dc |
| institution | Directory Open Access Journal |
| issn | 1459-6067 1795-1895 |
| language | English |
| last_indexed | 2024-12-22T14:23:58Z |
| publishDate | 1992-12-01 |
| publisher | Scientific Agricultural Society of Finland |
| record_format | Article |
| series | Agricultural and Food Science |
| spelling | doaj.art-cbee547923aa432cadf3ab7e671af5dc2022-12-21T18:22:54ZengScientific Agricultural Society of FinlandAgricultural and Food Science1459-60671795-18951992-12-0116The use of heated models to describe the thermal environment in shelters for farm animalsMarkus Pyykkönen0Department of Agricultural Engineering and Household, Technology, Viikki F, SF-00014 University of Helsinki, FinlandThe dry bulb air temperature is still the most commonly used parameter to characterize the thermal environment, even though it disregards the effect of air velocity and the thermal properties of the flooring material on the heat loss from the animal. Measurements in the laboratory confirmed that an uninsulated heated model with an overall thermal resistance of 0.11 m 2 KW-1 is sensitive enough to differentiate between changes in conduction, convection and radiation conditions. Measurements on farms showed that the heat loss simulated by mechanical models gives a more diversified description of the thermal environment than the dry bulb air temperature. Although the uninsulated mechanical model is not a standardized device, it is a useful method for measuring the thermalenvironment especially under sheltered winter conditions.https://journal.fi/afs/article/view/72466 |
| spellingShingle | Markus Pyykkönen The use of heated models to describe the thermal environment in shelters for farm animals Agricultural and Food Science |
| title | The use of heated models to describe the thermal environment in shelters for farm animals |
| title_full | The use of heated models to describe the thermal environment in shelters for farm animals |
| title_fullStr | The use of heated models to describe the thermal environment in shelters for farm animals |
| title_full_unstemmed | The use of heated models to describe the thermal environment in shelters for farm animals |
| title_short | The use of heated models to describe the thermal environment in shelters for farm animals |
| title_sort | use of heated models to describe the thermal environment in shelters for farm animals |
| url | https://journal.fi/afs/article/view/72466 |
| work_keys_str_mv | AT markuspyykkonen theuseofheatedmodelstodescribethethermalenvironmentinsheltersforfarmanimals AT markuspyykkonen useofheatedmodelstodescribethethermalenvironmentinsheltersforfarmanimals |