Personal cooling garments (PCGs) have gained increased attention in recent years due to heat stress and strain in the working environment. The present study was conducted in hot environments of an iron foundry to evaluate the efficacy of a battery-operated PCG. Twenty-four workers were exposed to climatic conditions of 35.89 ± 1.25 °C, 35% relative humidity during 90-min work with PCG and habitual clothing (HC). Mean weighted skin temperature was significantly lower by 4.84 ± 1.05 °C compared with HC 0.38 ± 1.02 °C (p < 0.05). A statistically significant difference was also observed for 0.492 ± 0.26 g mean sweat loss in the PCG group compared with 0.775 ± 0.42 g in the HC group (p < 0.05). Heart rate, and back and chest skin temperatures were comparatively more reduced in the PCG group compared with the HC group. PCG provides a practical and economical way of alleviating the physiological effects of heat stress when environmental control is not feasible.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1080/10803548.2016.1181484 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Evaluating the Appropriateness of Selected Foundry Sands for the Casting of Reactor Housings: A Study Based on Physicochemical Characterization Outcomes.
Materials (Basel)
December 2024
Faculty of Geology, Geophysics and Environmental Protection, AGH University of Krakow, al. A. Mickiewicza 30, 30-059 Krakow, Poland.
In the case of desulfurization and spheroization of cast iron using the in-mold method, in which the treated cast iron is poured into the reaction chamber and placed in the casting mold, the mineral raw material of the mold should support these processes. Therefore, it is important to know the physicochemical properties of the materials selected for the production of casting molds and to learn about the phenomena occurring during their pouring. The research presented in this paper was carried out on quartz, magnesite, chromite, and olivine sands.
View Article and Find Full Text PDFMicrostructure of the Working Layer of X46Cr13 Steel in a Bimetal System with Gray Cast Iron.
Materials (Basel)
December 2024
Department of Foundry Engineering, Silesian University of Technology, 7 Towarowa Street, 44-100 Gliwice, Poland.
The research conducted in this study aimed to determine whether the production of a layered casting in the material system of X46Cr13 steel (working part) and gray cast iron (base part) can be integrated with the hardening process of this steel within the conditions of the casting mold. Accordingly, a series of layered castings was produced by preparing the mold cavity, where a monolithic steel insert was poured with molten gray cast iron with flake graphite. The variable factors in the casting production process included the pouring temperature T and the thickness of the support part g.
View Article and Find Full Text PDFExperimental and Numerical Analysis of Thermal Fatigue of Grey Cast Iron Ingot Mould.
Materials (Basel)
November 2024
Faculty of Foundry Engineering, AGH University of Krakow, Reymonta 23 St., 30-059 Krakow, Poland.
This article presents the results of experimental studies and numerical calculations that were conducted to analyse the phenomena that occur during the operation of an ingot mould that is designed for casting steel ingots. The studies were conducted on an experimental stand in a foundry on an ingot mould that was designed to make ingots that weigh up to six tons; they consisted of determining the temperature of the ingot mould and measuring the displacements of its walls during filling with steel and cooling. These studies were used to create and verify a numerical model that was used to determine the temperatures, displacements, deformations, and stresses in ingot mould walls during the operating cycle using the FEM method.
View Article and Find Full Text PDFSelective Reduction of Iron in High-Phosphorus Oolitic Ore from the Lisakovsk Deposit.
Materials (Basel)
October 2024
Department of Metallurgy and Materials Science, Karaganda Industrial University, Temirtau 101400, Kazakhstan.
Reduction of iron in high-phosphorus oolitic ore from the Lisakovsk deposit using solid carbon, carbon monoxide, and hydrogen. An X-ray phase analysis was used to determine the phase composition of the samples after reduction roasting. When reduced with carbon monoxide or hydrogen, α-iron appears in the samples, while phosphorus remains in the form of iron, calcium, and aluminum phosphates.
View Article and Find Full Text PDFThe Influence of Iron Content on the Porosity of AlSi9 Alloy Intended for Alfining Piston Ring Inserts.
Materials (Basel)
October 2024
Faculty of Science and Technology, Institute of Biomedical Engineering, University of Silesia in Katowice, Będzińska 39 Street, 41-205 Sosnowiec, Poland.
Due to its tendency to increase the power of engines, improving their reliability and operational efficiency, the compression ring in combustion engine pistons is embedded in a cast iron insert, which is subjected to the process of "alfining". This involves covering the insert with an Al-Si alloy, which increases the iron content. Research has shown that the β-AlFeSi phases crystallizing in the area of the insert-piston connection are the main cause of an unstable connection between the silumin casting of the piston and the ring insert.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!