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An optimal two-bout strategy with phase change material ...

Cooling vests incorporating phase change material (PCM) packets are used to improve comfort of workers in hot environments. This work aims to investigate by modeling and experimentation the effect of dividing the working duration into two bouts, where different PCM melting temperatures are used in e …

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Lightweight Phase Change Cooling Vest with Ice Packs ...

Designed to be 30%-60% lighter weight than other cooling vests on the market, the Chill-Its Lightweight Phase Change Cooling Vest keeps workers cooler, safer and more productive. Its biodegradable phase change cooling material maintains a 64° F / 18° C …

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Techniche CoolPax Phase Change Cooling Vests

Techniche Coolpax Phase Change Cooling Vest comprises of PCM (Phase Change Material) cooling technology that uses non-toxic carbon-based liquid that freezes at 58F/14°C and remains at that temperature for 2-3 hours. Coolpax vest is a V-neck vest with zipper closure and shoulder adjustment. It's made of cotton and has a thermal liner.

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Processing technology and ballistic-resistant mechanism of ...

When the impact disappears, it undergoes a reversible phase transition and returns to a liquid state. This intelligent bulletproof material can not only guarantee the basic protection function but also guarantee free and flexible movement, which can be applied widely in the whole ballistic-resistant vest or protective parts.

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Soldier Cooling System Market - Global Analysis, Size ...

There are systems available for dismounted soldiers that ventilate the air layer created by spacer materials under the ballistic vest. The ice vest is one such example of phase change material technology which absorbs heat when it changes form from solid to liquid. Currently, advancements are being made in the field of active thermal control.

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Evaporative Cooling Vests vs. Phase Change Cooling Vests

As the phase change cooling pack absorbs heat, it will begin to phase change from a solid to a liquid. Because of the constant temperature behavior of phase change material technology, the cooling packs will maintain a constant temperature during this transition. ... let a cooling vest change your outlook on the hot weather to come! 110 views 0 ...

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K9 Cooling Vests - Nonprofit providing stab/bulletproof ...

The vests also have velcro strips along both sides for agency identification patches if needed. The cooling vest uses a unique Phase Change Material (PCM), a non-toxic chemical that freezes at 58F and stays at that temperature for 2-3 hrs. PCM absorbs heat away from the K9. This is not an ice pack device which uses frozen ice packs to cool.

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Cooling vests with phase change materials: the effects of ...

A previous study by the authors using a heated thermal manikin showed that the cooling rates of phase change material (PCM) are dependent on temperature gradient, mass, and covering area. The objective of this study was to investigate if the cooling effects of the temperature gradient observed on a thermal manikin could be validated on human subjects in extreme heat. The subjects …

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MC Armor Men's Bulletproof Perfect Tank Top- NIJ Level II ...

Part of their Gold line of products, this latest version of their Tank Top vest incorporates NASA space technology in microencapsulated phase change materials, or micro-PCMs. These micro-PCMs infused within the carrier thermoregulate the vest which disperses body heat to maintain a temperature responsive vest that stays much cooler than vests ...

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The torso cooling of vests incorporated with phase change ...

Cooling vests incorporated with phase change materials (PCMs) add extra insulation and restrict sweat evaporation. It is still unclear how much cooling benefit they can provide. The aim of this study was to investigate the torso cooling of the PCM vests in two hot environments: hot humid (HH, 34°C, 75% relative humidity (RH)) and hot dry (HD ...

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Phase Change Solutions

Phase Change Solutions is a global leader in temperature control and energy-efficient solutions, using phase change materials that stabilize temperatures across a wide range of applications. Customers across transportation of perishables and pharmaceuticals, buildings and structures, telecom and data centers – use BioPCM® to maintain optimum ...

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Corporate Resume - Mawashi

the ballistic vest. The objective is to combine a smart air convection element with a cold or hot conduction element to enhance the bodys natural thermoregulation and keep the skin dry. TRL 4 2013 Project P99 Firefighter PCM Vest – Design and development of a Phase Change Material (PCM) Vest destined to the firefighters.

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US6418832B1 - Body armor - Google Patents

US6418832B1 US09/558,496 US55849600A US6418832B1 US 6418832 B1 US6418832 B1 US 6418832B1 US 55849600 A US55849600 A US 55849600A US 6418832 B1 US6418832 B1 US 6418832B1 Authority

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Facts about phase change material cooling vests | 2013 …

Question #3: Phase Change Materials are non-toxic – True or False? There are many variations of phase change material inserts and vests on the market today. Some phase change materials are suspended in water and are relatively nontoxic. Others are hydrocarbons or other flammable materials and are toxic.

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Facts about phase change material cooling vests | 2013-06 ...

Question #3: Phase Change Materials are non-toxic – True or False? There are many variations of phase change material inserts and vests on the market today. Some phase change materials are suspended in water and are relatively nontoxic. Others are hydrocarbons or other flammable materials and are toxic.

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TechKewl™ Phase Change Material by TechNiche Benelux

A phase-change material (PCM) is a substance with a high heat of fusion which, melting and solidifying at a certain temperature, is capable of storing and releasing large amounts of energy. Heat is absorbed or released when the material changes from solid to liquid and vice versa; thus, PCMs are classified as latent heat storage (LHS) units.

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Sweat Suits: Ballistic Vests - Patrol - POLICE Magazine

Available from Torrance, Calif.-based Cool Sport, these cooling vests work as simply as putting an ice cube on your forehead. Using cooling packs containing phase change material, the vest maintains a comfortable and constant 62-degree Fahrenheit temperature against the body. They're also much easier to use than ice cubes or even freezer packs.

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Vibranium? This new body armor could be close

The phase change that happens in boron carbide is the same type of phenomenon you see when ice melts to water, except in this case the boron carbide turns into a glassy material that fractures easily. Atoms that were ordered in its crystalline state will end up arranged haphazardly, which weakens boron carbide at the point of contact.

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Phase Change Materials for Temperature-Regulating Textiles ...

By Dr. Tanveer Hussain Phase Change Materials (PCMs) Matter is known to have four physical states, viz., solid, liquid, gas and plasma. Phase change refers to the process in which a material goes from one physical state to another, e.g., from solid to liquid or vice versa. Phase change materials have ability to absorb or…

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Material Combination Strengthens Body Armor - Tech Briefs

Using a touch of silicon in boron carbide changes the spacing between atoms and the empty spaces created might be good sites to absorb harmful radiation from nuclear reactors. Watch a demo of the new armor material on Tech Briefs TV here. For more information, contact Kelvin Xie, Assistant Professor, at [email protected]; 979-458-3184.

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China PCM Cooling Vest - phasechange-material.com

Grey 20 Degree Nomex Fireproof PCM Cooling Vest. Name of Item:Flame-resistant PCMs cooling vest. Vest Material: Nomex. Phase change Material:Ice pouches filled or …

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Solicitation: Body Armor for Law Enforcement and Corrections

ballistic performance of the armor. F. Armor size and gender specification performance evaluation. NIJ seeks to evaluate the effect of armor size and gender specifications on ballistic performance. NIJ has recently made changes in the body armor compliance testing program to address armor size (e.g., introduction of a sizing template in March ...

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Bullet proof clothing - BULBUL - SlideShare

Definition of Bullet proof clothing A bullet-resistant vest is an article of protective clothing that works as a form of armor to minimize injury from projectiles fired from handguns, shotguns and rifles . They are commonly worn by police forces, the military, and private security and civilians where legal. 4.

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Cooling Vests - Body Cooling | Polar Products

Cooling vests with Cool58® Phase Change Cooling Packs: Phase change packs fully charge (freeze) at 58ºF (14.4°C) and provide a comfortable, constant cooling temperature of 58ºF. Ideal choice when freezers are not available; these packs can be activated in 15 to 20 minutes in a container of ice water!

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Programma ECPC met posters

42 The effect of temperature gradient on the cooling rate of phase change material vests .....51 43 Analysis of thermal resistance for insulation adjustable jacket and determining the temperature rating

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Cooling vests with phase change materials: the effects of ...

Cooling vests with phase change materials: the effects of melting temperature on heat strain alleviation in an extremely hot environment Eur J Appl Physiol . 2011 Jun;111(6):1207-16. …

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Experimental and numerical performance evaluation of a ...

Cooling vests containing phase change materials (PCMs) are one way to confront the effects of personal heat. These vests reduce the body's temperature by absorbing the excess body heat with PCM. This study aimed to investigate the performance of a cooling vest and its efficacy on physiological parameters in extremely hot and humid conditions ...

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Potential Applications of Titanium Alloys in Armor Systems

of titanium alloys into an armor system may offer greater ballistic advantages when the total performance is evaluated and this paper will examine potential ... excellent material for many military applications. ... phase change. Alloy additions to titanium, except tin and

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Techniche TechKewl 6626 Phase Change Cooling Vest …

TechNiche's Phase Change Cooling Vests maintain a comfortable 14 degrees C (58 degrees F) for up to 3 hours of critical heat stress relief. Size: M/L=100-175lbs L/XL=175-250lbs XXL=250-300lbs They are commonly used under high heat protective clothing, hazardous material suits, military body armor, and mascot costumes. TechKewl™ Phase Change Cooling Vests keep you cool when you need it most!

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