Lecturer Eng. Elena CODĂU (ONOFREI), Ph.D., PhD student Eng. Teodor-Cezar CODĂU
Rezumat
In aceasta lucrare s-a studiat efectul umidităţii asupra transferului de caldura prin materialul textil, in cazul expunerii acestuia unui flux radiativ. S-a investigat transferul de caldura printr-un singur strat de material, cu continut de umiditate diferit. S-a constatat ca in timpul evaporarii umiditatii din materialul textil, temperatura inregistreaza un platou, aceasta ramanand constanta. Consumul de energie pentru schimbarea de faza a umiditatii din materialul textil este procesul care predomina, atata timp cat exista umiditate. Odata ce evaporarea s-a terminat, temperatura creste si se apropie de temperatura masurata in cazul materialului uscat. Umiditatea din stratul de material textil nu a condus la cresterea temperaturii, comparativ cu mostra uscata. Acest studiu confirma faptul ca umiditatea poate influenta pozitiv protectia termica a utilizatorului in cazul expunerii unui flux radiativ relativ scazut.
Cuvinte cheie: transfer de căldurăevaporareconfort termic.
Abstract
In this study we analyzed the effect of moisture on the heat transfer through the textile material in case of exposure to radiant heat flux. We investigated the heat transfer through a single-layer fabric at different moisture content. It was found that during the evaporation of the moisture, a temperature plateau appeared during which temperatures were hardly rising. The energy consumption used for the phase change of moisture located in the textile dominated the heat transfer process as long as there was moisture present. As soon as all water has evaporated, the temperatures approached the temperatures measured for dry samples. The moisture within the mono-layer textile did not lead to increased temperatures compared to the measurements with dry samples. This research has confirmed that moisture can positively affect the thermal protection of the wearer in case of low radiant heat flux.
Din același număr
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- NANOART AS MULTIDISCIPLINARY OF NANOTECHNOLOGY WITH NOVEL ART FOR FASHION AND INTERIOR DESIGN
- INNOVATIVE JUTE PRODUCTS FOR TECHNICAL APPLICATIONS
- ANALYSIS OF MAIN CHARACTERISTICS OF FABRICS USED IN PARACHUTE MANUFACTURING
- AN INNOVATIVE HARNESS/CONTAINER ASSEMBLY FOR SPORT PARACHUTES
- THE INFLUENCE OF REACTIVE DYES ON THE ULTRAVIOLET PROTECTION FACTOR OF THE KNITTED COTTON FABRICS
- BEHAVIOUR OF COATED MAGNETIC WOVEN TEXTILES SUBJECTED TO HAND-WASHING
- THE ANALYSIS OF THE QUALITY CHARACTERISTICS OF FABRICS MADE OF WOOL YARNS USING THE STATISTICAL CORRELATION METHOD
- CONSIDERATIONS REGARDING PROCESSING OF CONDUCTIVE TEXTILE WASTE
- STUDY OF TENSIONAL PROPERTIES OF GORETEX WATERPROOF MEMBRANES
- FUNCTIONAL ANTISTATIC AND DRAPING PROPERTIES OF THE LITURGICAL CLOTHING ENSEMBLE
- PARAMETERS OF THERMO-PHYSIOLOGICAL COMFORT OF THE LITURGICAL CLOTHING STRUCTURE