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2. Size analysis of solid particles using laser diffraction and sieve analysis

Creator:
Hrnčířová, Michaela, Pospíšil, Jiří, and Špiláček, Michal
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
solid particles, size distribution, laser diffraction, and sieve analysis
Language:
English
Description:
The article compares two methods of determination of the particle size distribution of fine ash. The respective methods compared are the sieve analysis and laser difraction. The former is one of the oldest methods in use, applicable to size separation of large grain size particles. The latter is a modern advanced method that employs lase diffraction to determine the size distribution. For the measurement itself, the sieve analyser Analysette 3 PRO and the universal laser diffraction device Analysette 22 MicroTec plus, both from the Fritsch company, were applied. The comparison was made by analysing fine ash particles from biomass burners. The particles were in the size range of 0.08 μm to 2000 μm. and Obsahuje seznam literatury
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

3. Sprinkled heat exchangers operating at atmospheric pressure

Creator:
Šnajdárek, Ladislav, Kracík, Petr, and Pospíšil, Jiří
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
heat exchanger and atmospheric pressure
Language:
English
Description:
The paper presents a state of the art review of fundamental research of heat transfer process in liquid sprinkled heat exchangers placed in atmospheric and also in vacuum chamber. It compares the structure of atmospheric and vacuum stand. In this article, the temperature falls are experimentally investigated in the condensation and boiling regimes on the experimental tube bundles. The results were obtained by analysis of thermograms of the tube bundles during operation period.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public