In this paper, the experimental results of a detonation chamber fed by air from a centrifugal compressor are presented. The detonation chamber was equipped with many different sensors, mostly thermocouples, which were placed in 11 different positions. The distribution of temperature changes along the chamber and radial temperature profile at the outlet are provided. The results here confirm the existence of high mixture stratification. Such mixture stratifications and temperature profiles may be used as an additional chamber wall cooling method. The experiments performed, address key issues regarding the chamber choking problem caused by turbines. The relationship between the turbine performance and detonation chamber are crucial for proper control of turbine jet engine.
1. Korczewski Z.: An entropy function application within the selection process of diagnostic parameters of marine diesel and gas turbine engines. Polish Maritime Research, 2(65)/2010, Vol.17, p. 29-35.
2. Korczewski Z.: Exhaust gas temperaturemeasurements in diagnostic examination of naval gas turbine engines. Part III. Diagnostic and operating tolerances. Polish Maritime Research, No. 4(71)/2011, Vol.18, p. 49-53.
3. Korczewski Z.: Analysing possible use of the diagnostic model of internal
Pawlak W., Wiklik K., Morawski J.M.: Synthesis and investigations of aircraft turbine engine control systems using computer simulation methods (in Polish). Instytut Lotnictwa, Warszawa 1996
Szczeciń ski S.: Aircraft turbine engines (in Polish). Wydawnictwo MON, Warszawa 1965
Wiśniewski S.: Temperaturemeasurements in investigations of thermal engines and systems (in Polish). WNT, Warszawa 1983
Technical and operating documentation of naval turbine engines GTU6a, DE59, ZORYA type UGT
aromatic compounds formed by pyrolysis of the aliphatic hydrocarbons of tobacco; Acta Pathol. Microbiol. Scand. 39 (1956) 207.
6. Lam, 5. Some considerations on the mechanism of high temperature pyrolysis of aromatic and aliphatic hydrocarbons; Acta Pathol. Microbiol. Scand. 45 (1959) 237·
7. Laszlo, T. 5., and F. M. Watson, Ill: A scanning infrared tedmique for cigarette coal peak temperaturemeasurements; Beitr. Tabakf. 7 (:1974) 2.69.
8a. Keith, C. H.: Laboratory measurements of the smoking characteristics of human
Article highlights practical issues concerning temperature measurements using thermal sensitive paint (abbrev. TSP). TSP paint after blue light excitation emits red light with intensity dependent on its temperature. Temperature measurements are preceded with paint calibration, according to exact experiment conditions. Purpose of calibration is to find transfer function between intensity of emitted radiation and surface temperature. To achieve this goal, special computational procedure is implemented. Devices and methodology used for paint calibration are briefly described as well as measuring sample preparation process. Short description is devoted to the procedure for calculation temperature using recorded intensity. Results obtained during calibration are presented. Final conclusions about perspective of using thermal sensitive paint in laboratory are presented, as well as advantages and disadvantages of TSP method versus other methods currently used in temperature measurements.
B. Freliha, K. Kondratjevs, N. Kunicina and A. Zabasta
1. Patent of the Republic of Latvia No.14639 “A method for determination of heat consumption in premises by temperaturemeasurements of heat carrier” (“Telpu siltumenerģijas patēriņa noteikšanas paņēmiens ēkās ar vertikālo siltumnesēja sadales sistēmu, izmantojot siltumnesēja temperatūras mērījumus”, in Latvian).
2. Bruelisauer, M., Meggers, F., Saber, E., Li, C., and Leibundgut, H. (2014). Stuck in a stack - Temperaturemeasurements of the microclimate around split type condensing units in a high rise building in
do sieci IMGW. Annales UMCS, 61: 256–266.
ŁABĘDZKI L., ROGUSKI W., KASPERSKA W., 2001, Ocena pomiarów meteorologicznych prowadzonych stacją automatyczną. Przegląd Naukowy Wydziału Inżynierii i Kształtowania Środowiska SGGW, 21: 195–201.
NASH J., 2006, Challenges posed by the WMO Integrated Observing System. WMO Technical Conference on Instruments and Methods of Observations, Geneva, Switzerland, 4–6 December 2006.
NAGY Z., 2006, Effect of thermometer screens on accuracy of temperaturemeasurements. WMO Technical Conference on Instruments and
V. Isakovs, K. Kondratjevs, N. Kunicina, B. Freliha and A. Zabasta
Smart meters will be at the centre of the integrated solutions, including interaction with other networks in the next decade. The developed solution for multi-apartment building ventilation and heating parameter monitoring aims to increase energy efficiency and optimal control of the existing system. Dynamic control of heat and ventilation systems, heat loss detection, calculation and mitigation, and individual heat energy accounting are difficult tasks to accomplish. This article deals with the data transmission system using battery powered ISM band radio transmitters. The temperature measurement sensors with cumulative temperature reading are used as sensor part for this solution. The offered approach to monitoring system is used for overall building and individual apartment monitoring. Data coding and antenna designs are explained for this particular application.
Journal of Scientific Instrument, Vol. 29, 2008, No 12, 2581-2586.
7. Danping , Jia , Lele Lin,Weiqi Yuan , Yingwen Lin. A Study for Stability of High Precision Optical Fiber Fluorescent TemperatureMeasurement System. - Acta Metrologica Sinica, Vol. 29, 2008, No 2, 129-133.
8. Danping , Jia , Ting Jia , Lu Gao , Y i n g w e n L i n . Optimal Design of Optical Fiber Fluorescent Thermometry. - In: Proc. of SPIE, 7156, 2008. Doi 1117/12.896.808.
9. Danping , Jia, Peng Gao , Hongli San . Data Processing for Temperature
Dominik Sankowski, Marcin Bakala and Rafał Wojciechowski
The good quality of several manufactured components frequently depends on solidliquid interactions existing during processing. Nowadays, the research in material engineering focuses also on modern, automatic measurement methods of joining process properties, i.a. wetting force and surface tension, which allows for quantitative determination of above mentioned parameters. In the paper, the brazes’ dynamic properties in high-temperatures’ measurement methodology and the stand for automatic determination of braze’s properties, constructed and implmented within the research grant nr KBN N N519 441 839 - An integrated platform for automatic measurement of wettability and surface tension of solders at high temperatures, are widely described