Paweł Jamróz

Paweł Jamróz
Polish Academy of Sciences | PAN · Strata Mechanics Research Institute

PhD

About

14
Publications
794
Reads
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35
Citations
Citations since 2017
9 Research Items
27 Citations
201720182019202020212022202302468101214
201720182019202020212022202302468101214
201720182019202020212022202302468101214
201720182019202020212022202302468101214

Publications

Publications (14)
Article
Full-text available
the paper presents the results of works related to the analysis of microclimate hazards in the crystal caves of the wieliczka Salt mine. the paper focused on the development of a device for monitoring, testing and preliminary measurements of the gravimetric water content of rock in the crystal caves. the multisensory measurement system equipped wit...
Article
Full-text available
Hot-wire anemometric measurements are often related to the determination of flow parameters in a high frequency range. Such knowledge is particularly important when analyzing the flow phenomena in the vicinity of wind turbines. The reliability of obtained results is determined by the knowledge of the properties of the system used for measurements....
Article
Full-text available
Changes in the temperature of the medium significantly affect the static characteristics of hot-wire anemometry measuring wires, which causes errors in the results of flow velocity measurements. High temperatures of the medium make it necessary to additionally heat the sensor to even higher temperatures, which may lead to its damage due to wire bur...
Article
Full-text available
The complex ventilation system development process is associated with the stages of modelling, design, execution, and testing. Each of these steps requires the use of measuring equipment that is capable of determining the basic parameters of the flow. In the process of calibrating instruments for measuring flow velocity, one of the limitations is t...
Article
Air flow velocity measurements are the key issues in examining the condition and progress of mine ventilation process. In addition to standard measurements carried out in the stock exploitation process, it is necessary to conduct cognitive scientific research in this area. One of the important issues here is the measurement of fast-changing fluctua...
Article
Tachometric and thermal anemometers are two types of instruments mainly used in typical standard measurements in meteorology, ventilation, air conditioning, technical and industrial measurements. Both types of these instruments have many beneficial metrological properties, which causes their widespread use in many measurement issues. However, the s...
Chapter
Rapid development of motorization at the beginning of the twentieth century was the reason for engineers to set more and more difficult tasks. They wanted to increase their knowledge of physicochemical processes taking place in such hardly accessible places like interior of combustion engine and particularly in the combustion chamber. Nevertheless,...
Conference Paper
Full-text available
The maintenance of an old mine excavations is often related to making them accessible to visitors by means of appropriate protection and ensuring proper ventilation. A special topics are related to the areas where nature reserves are located. Individual procedures for protection cultural heritage are developed for such places. Those procedures depe...
Article
The paper presents an analysis of experimental data that include space–time distributions of methane concentration at the shearer-exploited longwall. The main objective of the observation was to identify the sources of methane emission and determine the methane distribution along the longwall and the adjacent workings. At present, numerical simulat...
Article
Full-text available
This paper discusses the problem of measuring the average velocity at the cross-section of mine heading with the use of the continuous traverse method. Based on model testing, it has been shown that measurement signals, obtained along the traversing trajectory, belong to the group of non-stationary signals. The methodology of the traversing method...
Conference Paper
Full-text available
Monitoring the air parameters in mine dispatching systems by stationary sensors is an important element of amine’s ventilation control system. The use of computers in conjunction with the dispatching system offers more and more opportunities to use data for the assessment of the mine’s ventilation, provided the data is reliable and properly represe...
Article
Full-text available
The use of measurement apparatus under conditions which differ significantly from those under which the apparatus was adjusted carries the risk of altering the previously determined measurement characteristics. This is of special concern in the case of apparatus which is sensitive to external measurement conditions. Advanced measurement systems are...
Article
A two-sensor correction method employs a relationship between the dynamic coefficients of the probes. This algebraic relationship is reduced to a proportion or a hyperbola and it depends on the sensors diameter ratio. It results from the application of fundamental equations governing the Nusselt number. This paper presents the analytical results of...
Article
The article presents simulation study of the influence of variable flow parameters (velocity, temperature and pressure) on the dynamic properties of temperature sensors. The numerical analysis has been done to several different models of heat transfer coefficient related to shape of sensors (sphere for thermocouple, cylinder for thermoresistor). Th...

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