Tag Archives: measurement

245-252 J. Papez and P. Kic
Heating and ventilation in milking parlours
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Heating and ventilation in milking parlours

J. Papez* and P. Kic

Czech University of Life Sciences Prague, Faculty of Engineering, Kamycka 129, 16521 Prague 6, Czech Republic; *Correspondence: papez@tf.czu.cz

Abstract:

The aim of this paper is to show the results of the measurement of main microclimatic parameters (temperature and relative humidity) in milking parlours and compare the obtained results with values recommended in relevant standards. Temperature and relative humidity can affect animal welfare as well as the well-being of workers. These parameters were measured in three rotary milking parlours with herringbone type of stalls, each for 24 dairy cows. Two of these milking parlours were built in 2001 and one was built in 2009. Measurements were taken during the winter and summer periods, under extremely cold or high temperature conditions. Measurements were taken during the milking process for about two hours using suitable sensors for measurement of indoor temperature and relative humidity. The data of outside temperature and relative humidity were also obtained and compared with indoor data. The final results of the research were generalized. It is obvious from the results of measurements of selected milking parlours that heating and ventilation of milking parlours is insufficient. To set up adequate heating power, the heat balance of milking parlours was calculated. For adequate ventilation, the necessary flow of fresh air was calculated for both winter and summer periods. Also the methods of how to achieve these air flows are presented.

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759-764 P. Kic
Dust pollution in University offices
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Dust pollution in University offices

P. Kic

Czech University of Life Sciences Prague, Faculty of Engineering, Kamycka 129, CZ-16521 Prague 6, Czech Republic;
e-mail: kic@tf.czu.cz

Abstract:

The aim of this paper is to present results of microclimatic research focused mainly on dust pollution in several offices of Departments in the Faculty of Engineering at Czech University of Life Sciences Prague. The attention is paid to the dimensions of the room, floor covering, furniture, equipment, ventilation, frequency of the use and period of the year. In the frame of this research the concentration of air dust was measured by special exact instrument Dust-Track aerosol monitor. After the installation of different impactors the PM¹, PM².⁵, PM⁴, PM¹0 size fractions were also measured. The obtained results of measurements were evaluated by the statistical instruments and concentrations of different size of dust particles were analyzed. Results of different indoor conditions were generalized. Based on the results of measurements practical recommendations for the design, use, cleaning and ventilation of these types of rooms and buildings were summarised in the conclusions.

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505-512 J. Papez and P. Kic
Wood moisture of rural timber constructions
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Wood moisture of rural timber constructions

J. Papez and P. Kic*

Czech University of Life Sciences Prague, Faculty of Engineering,Kamycka 129, 16521, Prague 6, Czech Republic;
*Correspondence: kic@tf.czu.cz

Abstract:

The aim of this paper is to present the methodology of measurement of moisturecontent of wood and show some results of this measurement in application on constructions ofagricultural buildings. Wood moisture can affect the durability of buildings. Measurements arein two different animal houses, which varied in design and implementation of the constructionmaterial (steel-wood and steel with wooden rafters). Both these buildings are relatively new(built in 2001 and 2009). There was measured also an older shed attached to the barn, which hasa storage and protective function. All these buildings are from spruce wood. The measurementwas based on the use of resistive sensor and capacitive sensor. Also determined was thetemperature and humidity of the air.From the results of measurements of tested buildings it is obvious that the moisture of the woodis in direct proportion with the relative humidity of the air. There are different results measuredby capacitive and resistive sensors. The suitability of the sensors for determination of woodmoisture was verified by gravimetric method, that is direct method and the results are veryaccurate. In the case of coniferous wood (especially spruce wood), there can be used withsufficient accuracy a capacitive sensor, which was used in all examined buildings. Key word: animal houses, wood, measurement, moisture content.

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