Browsing by Author "Hanuš, Jaroslav"
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- ItemAKUSTICKÝ PRVEK Z RECYKLOVANÝCH SUROVIN(Technická Univerzita v Liberci, 2006) Poláček, Michal; Hanuš, JaroslavThis diploma thesis deals with waste textile and waste plastic utilization for production of acoustic components. The thesis contains two designs of acoustic components, the results of measurements of sound absorption coefficient and it discusses test data, the possibilities of production and aplications of these designed components.
- ItemAplikace techniky "kvazi-přízí" ke zvýšení pevnosti netkaných textilií(Technická Univerzita v Liberci, 2012) Svobodová, Věra; Hanuš, JaroslavPráce se zabývá vlivem vybraných technologických parametrů používaných k aplikaci kvazi-přízí na vlastnosti produktů vyrobených vertikálním skládáním NT a produktů armovaných armovací sítí. Obsahuje jednak stručnou rešerši prací obecně spojených s aplikací kvazi-přízí, jednak výsledky provedeného experimentu zpracované do grafů znázorňujících závislost sledovaných vlastností produktu na vybraných technologických parametrech.
- ItemFiltering function of vertically pleated textile products (ROTIS II)(Technická Univerzita v Liberci, 2010) Maduna, Lebo; Hanuš, JaroslavThere is a growing use of nonwovens in technical applications such as filtration. The ability to understand the parameters that influence the filter medium is important for the use of filter media. Parameters like pressure drop and efficiency are the two most important parameters that filter media designers consider when designing filter media. The aim of this study is to test if the geometry of pleated filters produced by the ROTIS II technology has influence on the following filtering parameters: pore size, pressure drop and filtration efficiency. This will also involve comparing these parameters to find if there is linear relationship between them. For this study pleated filter media was prepared using the ROTIS II technology and tested. Their results were compared to that of flat filter media to find out if the is an influence on filtering parameters. The permeability coefficient results have shown that pleating the filter media increases its permeability coefficient than flat filter media. However if were to use the same weight of material for flat filter as in pleated filter media we will increase permeability coefficient slightly higher than that of double layered filter media. Pleating the filter media changes the pore sizes. Pores can be smaller or larger than that of flat filter media depending on the pressure. There is no linear relationship between pore size and permeability coefficient. There are varied results for pore size against dust starting pressure as such we could not come to the conclusion that there is linear relationship between pore size against dust starting pressure. Pleating the filter media increases the efficiency of the filter media that do not have 100 percentage efficiency. The pore size influences the efficiency of the filter media. The smaller the pore size the higher is the efficiency and the larger the pore size the smaller is the efficiency however this linear relationship does not apply to filter media that have 100 percentage.
- ItemKompozit z 3D pleteniny a PU pěny(Technická Univerzita v Liberci, 2007) Hakl, Zdeněk; Hanuš, JaroslavDiplomová práce se zabývá výrobou a vlastnostmi kompozitu složeného z měkké polyuretanové pěny jako matrice a distanční pleteniny použité jako výztuže. Je popsán postup výroby kompozitu, jsou porovnávány vlastnosti kompozitu s vlastnostmi jeho komponent. K testování jsou využívány postupy vypracované pro polyuretanové pěny. Sledovanými parametry jsou kompresní odpor, relaxace napětí, podpěrný faktor, trvalá deformace a tlumící práce. V závěru je diskutován projev synergického efektu na testovaných vlastnostech kompozitu a je nastíněn další vývoj studovaného kompozitu.
- ItemKvazi příze v netkaných textiliích(Technická Univerzita v Liberci, 2010) Singh, Rubal; Hanuš, JaroslavThe Scope of project is selection of materials for production of nonwovens fixed by quasi-yarns with the aim of maximum quasi-yarns tensile strength. Results of material testing methods and their link to quasi-yarns tensile strength are described; quasi-yarns tensile strength and technology parameters of nonwovens production are discussed.
- ItemLight oil phase textile sorbent into remediation wells(Technická Univerzita v Liberci, 2012) Molefe, Dimpo Alfred; Hanuš, JaroslavThere is a great need to keep environment safe from huge threat of contaminants that are spreading at high speed above and below the ground. The main reason evolves from the dramatically increase in the usage of chemicals in many sectors and machinery where oils and fuels are demanding. This paper is based on studying the efficiency of a designed textile sorbent from nonwoven material (made from polypropylene fibers) when it is applied in light oil phase into remediation wells. The following tests were carried: capillary action tests included plain strips, tubular sorbent in oil and weight test (oil only). The absorption and capillary action include test in measuring cylinder (oil on water) and this is last test which reflects nature situation. The trip tests categorized polypropylene materials made of different nonwoven technologies and different properties according to their efficiency in absorbing oil. Two different types of sorbents were compared, completely hydrophobic ECT and ECT U that possesses both hydrophobic and hydrophilic properties. Among each of these sorbents comparison was also done, heavy (high density) against light (low density) samples. The main experimental parameters are the following: time taken for sample to reach maximum capacity, height travelled by oil during capillary action and gram oil per gram textile ratio. It was also interesting to check whether the sorbent sink at the end of experiment. The experimental results showed that ECT and ECT U heavy samples have high oil absorption capacity compared to light samples due to their better retention time. ECT U sorbents have better affinity to oil than to water. In nature simulating tests (test in measuring cylinder) absorption rate is very higher because 200ml oil is absorbed within 5-7 minutes and 396.8 ml within one hour for cylinder with 50mm diameter and 250mm long. The sorbents will not sink if used in nature.
- ItemNetkaná textilie s lokálně rozdílným kompresním odporem(Technická Univerzita v Liberci, ) Hanuš, Jaroslav
- ItemPřádelna bavlnyHanuš, Jaroslav
- ItemStavební izolace z vlněného vlákna(Technická Univerzita v Liberci, 2006) Tuvora, Jan; Hanuš, JaroslavThe thesis deals with the research of the heat insulating nature of wool isolation (cover) and moisture. Experimentally test influence of the isolation density {$\varrho$} to heat conductance {$\lambda$}, volume heat capacity c.{$\varrho$} and thermal diffusivity a in the defined ambient conditions. Experimentally test influence of the moisture in the isolation absorbed from surroundings to the mentions parameters.