Study on the Effect of TPR Simulated Skin on Water Cooling Garment

2012 ◽  
Vol 170-173 ◽  
pp. 2554-2557
Author(s):  
Kai Yang ◽  
Ming Li Jiao ◽  
Wei Yuan Zhang
Keyword(s):  
Thermodynamic Properties ◽  
Thermal Manikin ◽  
Water Cooling ◽  
Climate Chamber ◽  
Series Of Experiments ◽  
Cooling Garment ◽  
Heat Property ◽  
Fuzzy Mathematic ◽  
Synthetic Evaluation

A novel TPR simulated skin was applied in the system of thermal manikin and water cooling garment, and the satisfying result in improving the heat dissipating efficiency of water cooling garment was achieved. Firstly, five kinds of elastomer were selected as candidate simulated skin. To evaluate the synthetic performance of these materials, a series of experiments characterizing material's mechanical and thermodynamic properties was performed, including stiffness test, heat property test, TGA test and so on. Then, fuzzy mathematic method was employed to perform synthetic evaluation, which showed that TPR had satisfying optimization performance and can be used as simulated skin. Finally, to verify the function of TPR simulated skin to increase water cooling garment's heat dissipating efficiency, comparative experiments were performed in climate chamber. Results show that TPR simulated skin can effectively improve water cooling garment's heat dissipating efficiency measured by thermal manikin.

A Novel Elastomer Simulated Skin Applied in Measurement of Extravehicular Liquid Cooling Garment

2011 ◽  
Vol 239-242 ◽  
pp. 908-911
Author(s):  
Kai Yang ◽  
Ming Li Jiao
Keyword(s):  
Natural Rubber Latex ◽  
Thermoplastic Elastomer ◽  
Ethylene Vinyl Acetate ◽  
Fuzzy Decision Making ◽  
Thermal Manikin ◽  
Liquid Cooling ◽  
Series Of Experiments ◽  
Cooling Garment ◽  
Heat Property ◽  
Fuzzy Mathematic

A novel thermoplastic elastomer was applied in the measurement of extravehicular liquid cooling garment and the satisfying result in improving the heat dissipating capacity of liquid cooling garment was achieved. Firstly, five kinds of elastomer were selected, which were ethylene-vinyl acetate copolymer (EVA), high temperature vulcanized silicone rubber (HTV), medical used silicon rubber (MSR), natural rubber latex (NRL) and thermoplastic SBS complex (TPR). To evaluate the synthetic performance of these materials, a series of experiments characterizing material’s mechanical and thermodynamic properties was performed, including tensile and compression test, heat property test and so on. Meanwhile, fuzzy mathematic method was employed to get parameters’ weight distribution, and then fuzzy decision-making method was adopted to perform synthetic evaluation, which showed that TPR had satisfying optimization performance and can be used as simulated skin in thermal manikin. Finally, to verify the function of TPR simulated skin, comparative experiments were performed in climate chamber when thermal manikin covered with TPR simulated skin and did not cover with TPR simulated skin. Results show that TPR simulated skin can effectively improve the heat dissipating capacity of liquid cooling garment.

Study on the Effect of Surface Coating on Thermal Manikin's Repeatability

2011 ◽  
Vol 117-119 ◽  
pp. 1425-1428
Author(s):  
Kai Yang ◽  
Ming Li Jiao
Keyword(s):  
Surface Coating ◽  
Surface Condition ◽  
Natural Rubber Latex ◽  
Thermal Manikin ◽  
Rubber Latex ◽  
Coating Materials ◽  
Hard Materials ◽  
Series Of Experiments ◽  
Fuzzy Mathematic ◽  
Effect Of Surface

Thermal manikin is a system of simulating figures and heat states of human body. Present thermal manikin is always enclosed by hard materials, and not covered with surface coating. So the surface condition of thermal manikin is very different with real body, which reduces thermal manikin's repeatability. Therefore the research on thermal manikin's surface coating and its effect on thermal manikin's repeatability are necessary. In this paper, an appropriate material was selected to be thermal manikin's surface coating and the satisfying result in improving the repeatability of thermal manikin was achieved. Firstly, five kinds of candidate surface coating materials were selected, which were HTV, EVA, TPU, natural rubber latex and cotton fabric. To evaluate the synthetic performance of these materials, parameters characterizing material's mechanical and thermodynamic properties were achieved by series of experiments. Meanwhile, fuzzy mathematic theory was employed to do data analysis, which showed that HTV had satisfying optimization performance and can be used as thermal manikin's surface coating. Finally, to verify the function of HTV surface coating in improving thermal manikin's repeatability, comparative repeated experiments were performed in climate chamber when thermal manikin covered with HTV surface coating and did not cover with HTV surface coating. Results show that HTV surface coating can improve the repeatability of thermal manikin obviously.

scholarly journals A heat dissipating model for water cooling garments

2013 ◽  
Vol 17 (5) ◽  
pp. 1431-1436 ◽  
Author(s):  
Kai Yang ◽  
Ming-Li Jiao ◽  
Zhe Liu ◽  
Wei-Yuan Zhang
Keyword(s):  
Human Body ◽  
Heat Balance ◽  
Thermal Manikin ◽  
Water Cooling ◽  
Hot Environment ◽  
Cooling Garment ◽  
Cooling Garments

A water cooling garment is a functional clothing used to dissipate human body?s redundant energy in extravehicular environment or other hot environment. Its heat dissipating property greatly affects body?s heat balance. In this paper, a heat dissipating model for the water cooling garment is established and verified experimentally using the experimental thermal-manikin.

The Effect of Surface Coating on Thermal Manikin’s Stability

2011 ◽  
Vol 413 ◽  
pp. 84-89
Author(s):  
Kai Yang ◽  
Ming Li Jiao
Keyword(s):  
Surface Coating ◽  
Surface Condition ◽  
Soft Materials ◽  
Fuzzy Mathematics ◽  
Thermal Manikin ◽  
Climate Chamber ◽  
Coating Materials ◽  
Hard Materials ◽  
The Stability ◽  
Effect Of Surface

Present thermal manikin is always enclosed by hard materials, and not covered with surface coating. So the surface condition of thermal manikin is very different with real body, which reduces thermal manikin’s stability. Therefore the research on thermal manikin’s surface coating and its effect on thermal manikin’s stability are necessary. In this paper, an appropriate material was selected to be thermal manikin’s surface coating and the satisfying result in improving the stability of thermal manikin was achieved. Firstly, five kinds of soft materials were selected to be candidate surface coating materials, which were EVA, HTV, TPU, medical used silicon rubber and cotton fabric. By lots of experiments and fuzzy mathematics theory, HTV was analyzed to have satisfying optimization performance than other materials and can be used as thermal manikin’s surface coating. Finally, to evaluate the effect of HTV surface coating on thermal manikin’s stability, comparative experiments were performed in climate chamber when thermal manikin covered with HTV surface coating and did not cover with HTV surface coating. Results show that HTV surface coating can obviously improve the stability of thermal manikin.

A Smart Temperature-Regulating Garment for Portable, High-Efficiency and Comfortable Cooling

2021 ◽  
Author(s):  
Weicheng Shu ◽  
Xinfeng Zhang ◽  
Xuan Yang ◽  
Xiaobing Luo
Keyword(s):  
Thermal Comfort ◽  
High Efficiency ◽  
Working Time ◽  
Regulation System ◽  
Thermal Manikin ◽  
Inlet Temperature ◽  
Liquid Cooling ◽  
Work Duration ◽  
Smart Control ◽  
Cooling Garment

Abstract In a conventional liquid cooling garment (LCG), overcooling of the water inlet temperature shortens the working time and worsens thermal comfort. Such problems have not been well solved so far. In this study, we propose a smart cooling garment with a developed temperature regulation system, effectively reducing unnecessary loss of power consumption and hence extending the work duration. Testing on a thermal manikin was conducted to evaluate the performance of temperature-regulating LCG. The results showed that, compared to the conventional LCG, the proposed system achieved the rapid and accurate adjustment of water temperature, improved the working time by more than 37% with the total weight barely increased, and ensured the thermal comfort of the wearers. The developed LCG opens the possibility for the smart control of the temperature, fitting for the user's preferences regarding the working time and thermal comfort sensations.

Study on heat transfer of liquid cooling garment based on a novel thermal manikin

2008 ◽  
Vol 20 (5) ◽  
pp. 289-298 ◽  
Author(s):  
Kai Yang ◽  
Ming‐Li Jiao ◽  
Yi‐Song Chen ◽  
Jun Li ◽  
Wei‐Yuan Zhang
Keyword(s):  
Heat Transfer ◽  
Thermal Manikin ◽  
Liquid Cooling ◽  
Cooling Garment

Simulation of Efficiency of Liquid Cooling Garments

2011 ◽  
Vol 331 ◽  
pp. 636-639
Author(s):  
Ming Wei Tian ◽  
Su Kang Zhu ◽  
Ning Pan
Keyword(s):  
Dynamic Equilibrium ◽  
Three Dimensional ◽  
Characteristic Parameter ◽  
Thermal Manikin ◽  
Liquid Cooling ◽  
Effective Form ◽  
Equilibrium Level ◽  
Cooling Effects ◽  
Cooling Garment ◽  
Cooling Garments

Liquid cooling garment (LCG) is treated as one kind of effective form-fitting garment applied to remove and release extra heat efficiently from human body whose internal temperature can be easily maintained at a safe dynamic equilibrium level under the severe boundary conditions. In this paper, firstly, two specialized types of liquid cooling garments, wrapped around thermal manikin, are designed as the three-dimensional heat-flux coupling models that are solved numerically using a finite element method, and then the effective cooling temperatures of the thermal manikin skin are proposed as the characteristic parameter to evaluate the cooling effects of these garments. Finally, A comparison of thus effective cooling temperature with the experiment data from the existing reference are shown that this simulation model develops very reliable results for the heat transfer between liquid cooling garments and thermal manikin.

Models of Thermodynamic Properties of Prominences

1979 ◽  
Vol 44 ◽  
pp. 349-355
Author(s):  
R.W. Milkey
Keyword(s):  
Thermodynamic Properties ◽  
Mass Transport ◽  
Emission Spectrum ◽  
Thermodynamic Parameters ◽  
Working Group ◽  
Physical Processes ◽  
Theoretical Concepts ◽  
Group 3 ◽  
Observational Techniques

The focus of discussion in Working Group 3 was on the Thermodynamic Properties as determined spectroscopically, including the observational techniques and the theoretical modeling of physical processes responsible for the emission spectrum. Recent advances in observational techniques and theoretical concepts make this discussion particularly timely. It is wise to remember that the determination of thermodynamic parameters is not an end in itself and that these are interesting chiefly for what they can tell us about the energetics and mass transport in prominences.

Nucleation and Early Growth of Sputtered thin Films

1970 ◽  
Vol 28 ◽  
pp. 516-517
Author(s):  
Dudley M. Sherman ◽  
Thos. E. Hutchinson
Keyword(s):  
Thin Films ◽  
Electron Beam ◽  
Ion Beam ◽  
Ion Source ◽  
Water Cooling ◽  
Stages Of Growth ◽  
Lens Assembly ◽  
Microscope Technique ◽  
Ion Beam Sputter Deposition

The in situ electron microscope technique has been shown to be a powerful method for investigating the nucleation and growth of thin films formed by vacuum vapor deposition. The nucleation and early stages of growth of metal deposits formed by ion beam sputter-deposition are now being studied by the in situ technique.A duoplasmatron ion source and lens assembly has been attached to one side of the universal chamber of an RCA EMU-4 microscope and a sputtering target inserted into the chamber from the opposite side. The material to be deposited, in disc form, is bonded to the end of an electrically isolated copper rod that has provisions for target water cooling. The ion beam is normal to the microscope electron beam and the target is placed adjacent to the electron beam above the specimen hot stage, as shown in Figure 1.

X-ray microanalysis of thin specimens in the transmission electron microscope at voltages up to 1000 Kv.

1978 ◽  
Vol 36 (1) ◽  
pp. 540-541
Author(s):  
G. Cliff ◽  
M.J. Nasir ◽  
G.W. Lorimer ◽  
N. Ridley
Keyword(s):  
Electron Microscope ◽  
Transmission Electron Microscope ◽  
Weight Fraction ◽  
Present Series ◽  
Constant Independent ◽  
X Ray ◽  
Transmission Electron ◽  
Series Of Experiments ◽  
Image Position ◽  
X Ray Absorption

In a specimen which is transmission thin to 100 kV electrons - a sample in which X-ray absorption is so insignificant that it can be neglected and where fluorescence effects can generally be ignored (1,2) - a ratio of characteristic X-ray intensities, I1/I2 can be converted into a weight fraction ratio, C1/C2, using the equationwhere k12 is, at a given voltage, a constant independent of composition or thickness, k12 values can be determined experimentally from thin standards (3) or calculated (4,6). Both experimental and calculated k12 values have been obtained for K(11<Z>19),kα(Z>19) and some Lα radiation (3,6) at 100 kV. The object of the present series of experiments was to experimentally determine k12 values at voltages between 200 and 1000 kV and to compare these with calculated values.The experiments were carried out on an AEI-EM7 HVEM fitted with an energy dispersive X-ray detector.

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