Thermophysical properties of chosen biooils
The presented article deals with thermal properties of selected biooils (Plantohyd 46 S - biooil No1 and Plantohyd 40 N - biooil No2). Plantohyd 46 S is a synthetic, rapidly biodegradable fluid which is based on sustainable raw materials. It is exceptionally suitable for applications in mobile and s...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
National Society of Processing and Energy in Agriculture, Novi Sad
2014-01-01
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| Series: | Journal on Processing and Energy in Agriculture |
| Subjects: | |
| Online Access: | https://scindeks-clanci.ceon.rs/data/pdf/1821-4487/2014/1821-44871401008B.pdf |
| _version_ | 1811186807688134656 |
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| author | Božiková Monika Hlaváč Peter |
| author_facet | Božiková Monika Hlaváč Peter |
| author_sort | Božiková Monika |
| collection | DOAJ |
| description | The presented article deals with thermal properties of selected biooils (Plantohyd 46 S - biooil No1 and Plantohyd 40 N - biooil No2). Plantohyd 46 S is a synthetic, rapidly biodegradable fluid which is based on sustainable raw materials. It is exceptionally suitable for applications in mobile and stationary hydraulic systems. Plantohyd 40 N is multigrade hydraulic oil based on rapeseed oil used in agricultural and construction machinery. For thermal parameters measurements was used Hot wire method. The experiment is based on measuring of the temperature rise vs. time evaluation of an electrically heated wire embedded in the tested material. The thermal conductivity is derived from the resulting change in temperature over a known time interval. For two samples of biooils - Plantohyd 40 N and Plantohyd 46 S were determined basic thermophysical parameters - thermal conductivity, thermal diffusivity and volume specific heat. For each biooil samples were made two series of measurements. In the first series were measured thermal conductivity and thermal diffusivity at constant room temperature 20 °C. Every thermophysical parameter was measured 10 times for each sample. The results were statistically processed. For biooil No1 thermal conductivity was 0.325 W.m-1.K1, it was higher value than we obtained for biooil No2 - 0.224 W.m-1.K1. The similar results were obtained for thermal diffusivity of biooil No1 2.140.10-7 m2.s-1 and biooil No2 2.604.10-7 m2.s-1. For samples with constant temperature were calculated basic statistical characteristics as: standard deviation for λ - biooil No1 (± 0.056 W.m-1.K-1) and biooil No2 (± 0.054 W.m-1.K1); probable error of the arithmetic average for λ - biooil No 1 (± 0.012 W.m-1.K1) and biooil No 2 (± 0.005 W.m-1.K1); relative probable error in % for λ - biooil No1 (± 3.69 %) and biooil No2 (± 2.23 %). The same statistical characteristics were calculatedfor thermal diffusivity. In the second series of measurements were measured relations of thermal conductivity and thermal diffusivity to the temperature in temperature range (20 - 29) °C. From results was evident that all measured dependencies are nonlinear. For both thermophysical parameters were obtained polynomial functions of the second degree described by the polynomial coefficients. Type of function was selected according to statistical evaluation based on the coefficient of determination for every thermophysical parameter graphical dependency. The results obtained by the implementation of thermophysical measurements on samples of biooils are in good agreement with values known from the literature. |
| first_indexed | 2024-04-11T13:52:40Z |
| format | Article |
| id | doaj.art-469aca816b2342deaa5b6c55327f4d1d |
| institution | Directory Open Access Journal |
| issn | 1821-4487 2956-0195 |
| language | English |
| last_indexed | 2024-04-11T13:52:40Z |
| publishDate | 2014-01-01 |
| publisher | National Society of Processing and Energy in Agriculture, Novi Sad |
| record_format | Article |
| series | Journal on Processing and Energy in Agriculture |
| spelling | doaj.art-469aca816b2342deaa5b6c55327f4d1d2022-12-22T04:20:30ZengNational Society of Processing and Energy in Agriculture, Novi SadJournal on Processing and Energy in Agriculture1821-44872956-01952014-01-011818101821-44871401008BThermophysical properties of chosen biooilsBožiková Monika0Hlaváč Peter1Slovak University of Agriculture in Nitra, Faculty of Engineering, Department of Physics, Nitra, Slovak RepublicSlovak University of Agriculture in Nitra, Faculty of Engineering, Department of Physics, Nitra, Slovak RepublicThe presented article deals with thermal properties of selected biooils (Plantohyd 46 S - biooil No1 and Plantohyd 40 N - biooil No2). Plantohyd 46 S is a synthetic, rapidly biodegradable fluid which is based on sustainable raw materials. It is exceptionally suitable for applications in mobile and stationary hydraulic systems. Plantohyd 40 N is multigrade hydraulic oil based on rapeseed oil used in agricultural and construction machinery. For thermal parameters measurements was used Hot wire method. The experiment is based on measuring of the temperature rise vs. time evaluation of an electrically heated wire embedded in the tested material. The thermal conductivity is derived from the resulting change in temperature over a known time interval. For two samples of biooils - Plantohyd 40 N and Plantohyd 46 S were determined basic thermophysical parameters - thermal conductivity, thermal diffusivity and volume specific heat. For each biooil samples were made two series of measurements. In the first series were measured thermal conductivity and thermal diffusivity at constant room temperature 20 °C. Every thermophysical parameter was measured 10 times for each sample. The results were statistically processed. For biooil No1 thermal conductivity was 0.325 W.m-1.K1, it was higher value than we obtained for biooil No2 - 0.224 W.m-1.K1. The similar results were obtained for thermal diffusivity of biooil No1 2.140.10-7 m2.s-1 and biooil No2 2.604.10-7 m2.s-1. For samples with constant temperature were calculated basic statistical characteristics as: standard deviation for λ - biooil No1 (± 0.056 W.m-1.K-1) and biooil No2 (± 0.054 W.m-1.K1); probable error of the arithmetic average for λ - biooil No 1 (± 0.012 W.m-1.K1) and biooil No 2 (± 0.005 W.m-1.K1); relative probable error in % for λ - biooil No1 (± 3.69 %) and biooil No2 (± 2.23 %). The same statistical characteristics were calculatedfor thermal diffusivity. In the second series of measurements were measured relations of thermal conductivity and thermal diffusivity to the temperature in temperature range (20 - 29) °C. From results was evident that all measured dependencies are nonlinear. For both thermophysical parameters were obtained polynomial functions of the second degree described by the polynomial coefficients. Type of function was selected according to statistical evaluation based on the coefficient of determination for every thermophysical parameter graphical dependency. The results obtained by the implementation of thermophysical measurements on samples of biooils are in good agreement with values known from the literature.https://scindeks-clanci.ceon.rs/data/pdf/1821-4487/2014/1821-44871401008B.pdftemperaturethermal conductivitythermal diffusivitybiooils |
| spellingShingle | Božiková Monika Hlaváč Peter Thermophysical properties of chosen biooils Journal on Processing and Energy in Agriculture temperature thermal conductivity thermal diffusivity biooils |
| title | Thermophysical properties of chosen biooils |
| title_full | Thermophysical properties of chosen biooils |
| title_fullStr | Thermophysical properties of chosen biooils |
| title_full_unstemmed | Thermophysical properties of chosen biooils |
| title_short | Thermophysical properties of chosen biooils |
| title_sort | thermophysical properties of chosen biooils |
| topic | temperature thermal conductivity thermal diffusivity biooils |
| url | https://scindeks-clanci.ceon.rs/data/pdf/1821-4487/2014/1821-44871401008B.pdf |
| work_keys_str_mv | AT bozikovamonika thermophysicalpropertiesofchosenbiooils AT hlavacpeter thermophysicalpropertiesofchosenbiooils |