Browsing by Author "Chotěbor Michal"

Now showing 1 - 8 of 8
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    A study on heat and mass transfer through car seat poly-urethane foam
    (”Gheorghe Asachi” Technical University of Iasi, Romania Faculty of Textile s , Leather and Industrial Management, 2015) Buyuk Mazari Funda; Mazari Adnan Ahmed; Havelka Antonín; Chotěbor Michal
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    Development work gloves for hot operations
    (2016) Havelka Antonín; Chotěbor Michal; Nagy Ladislav
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    A device for measuring the evaporation heat of flat textile materials, in particular automobile seats
    (2017) Havelka Antonín; Kůs Zdeněk; Třešňák Rudolf; Chotěbor Michal
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    Effect of Perforated Polyurethane Foam on Moisture Permeability for Car Seat Comfort
    (2016) Mazari Adnan Ahmed; Buyuk Mazari Funda; Naeem Jawad; Havelka Antonín; Chotěbor Michal
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    The study of fabric performance for car seats
    (University of Ljubljana, 2017) Havelka Antonín; Glombíková Viera; Komárková Petra; Chotěbor Michal
    This paper deals with the investigation of the performance of car seat fabrics in terms of physiological comfort of sitting, specifi cally their water vapour resistance and air permeability. The current work presents an alternative approach to increasing the eff ectiveness of car seat fabrics through a combination of newly designed middle layer with forced convection achieved by a supplementary suction ventilation device. The supplementary device was designed to measure water vapour permeability by means of the sweating guarded hot plate (SGHP) system. It consists of two parts: a frame to grip a tested sample for measurements within the SGHP system and two suction ventilators which are arranged at one end of the mentioned frame in order to provide suction into the tested fabric plane during the SGHP test. The results of this investigation show that water vapour transport is increased by approximately 20% compared to the standard way of measurement by means of SGHP because of forced air fl ow in the plane of ribbed – channelled structure of the car seat middle layer. The fi ndings of this study have a number of important implications for future practice. The combination of a car seat cover with channelled structure and forced air fl ow improves physiological comfort of sitting which is a key issue for both drivers and manufacturers. The suggested device for forced air fl ow convection in the plane of a car seat fabric has not yet been part of an actual car seat, however it is possible to use its principles in a smart car seat prototype. Keywords: physiological comfort, air suction, channelled fabric structure
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    A STUDY ON THE PERFORATED POLY-URETHANE FOAM FOR THE CAR SEAT
    (2016) Buyuk Mazari Funda; Havelka Antonín; Chotěbor Michal; Wiener Jakub; Mazari Adnan Ahmed
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    The thermal insulation properties of high-tech sportswear fillings
    (Emerald Group Publishing Ltd, 2015) Havelka Antonín; Glombíková Viera; Kůs Zdeněk; Chotěbor Michal
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    Thermal Comfort Properties of Different Car Seat Materials
    (Technical University of Liberec, 2015) Buyuk Mazari Funda; Havelka Antonín; Chotěbor Michal