Kalis: Comfort from
cooling, 100% dry
Kalis: Comfort from
cooling, 100% dry
PPE users who perform heavy work in hot and humid conditions face risks of reduced concentration, productivity and safety. The main factors contributing to heat stress are the weather, the intensity of the work, clothing and the characteristics of the individual. There are also non-visible factors that can contribute, such as safety culture, company OSH management and worker training.
Heat stress can result in prolonged illness or injury, and the most serious heatstroke can even cause death if the symptoms are not treated in time.
Cases of heat-related illness among PPE users have been increasing worldwide and are likely to continue to rise due to climate change, especially in the case of outdoor workers with high workloads.
Until recently, wet cooling systems were the possible solution for equipping workers with additional head protection against heat, humidity and direct sunlight.
The least expensive methods of wet cooling involve wetting the equipment (for example, a cushion or fabric), squeezing it, and then using it while the water evaporates. More expensive products use ice or cooling tubes for this purpose. However, in general, moisture cooling systems present problems because they involve being immersed in water, and can never be 100% dry, creating discomfort for the user and posing a risk of bacterial contamination.
In addition, the wet cooling systems available are generally not very compatible with certain types of PPE.
Working at a good pace even in very high temperatures
The requirements for a cooler, cleaner and longer-lasting solution led Centurion to partner with Inuteq in the development of the innovative KALIS Dry Cooling System.
Designed to be comfortable, durable and anti-bacterial, the KALIS Dry Cooling System keeps the wearer up to 15°C cooler than the ambient temperature and completely dry, for long periods. It is compatible with different types and brands of helmets and has been tested with all Centurion helmets.
The Kalis cooling pouch for the helmet hood is activated with 50ml of water, weighing just 40g, provides enhanced cooling for up to 3 days without refilling and does not require submersion, refrigeration or freezing like other cooling products. The technology keeps the fabric dry to the touch, eliminating the discomfort of wet fabric on the skin, while cooling up to 15°C below ambient temperature, even in humid environments.
Wet Cooling VS Dry Cooling
Wet cooling
- They are immersed in water, giving the sensation of wetness directly on the skin and causing discomfort.
- They only provide cooling for a few hours (depending on humidity)
- It can only be activated 100 times*, so if it is reactivated twice a day, it will only last approximately 2-3 months.
- They only provide between 6-12ºC of cooling to the user.
- They are usually specified to be washed by hand (with a brush and soap).
- They are generally not antibacterial, so they can become contaminated and dirty.
*Depending on the brand used
Dry Cooling
- The KALIS Dry Cooling System is 100% dry and therefore comfortable for the user.
- Dry cooling lasts up to 3 days thanks to its internal and external membranes.
- It can be activated 750 times, lasting up to 5 years, depending on how often it is reactivated.
- It can provide up to 15ºC of cooling for the user.
- Machine washable.
- Anti-bacterial solution.
Working at a good pace even in very high temperatures
The requirements for a cooler, cleaner and longer-lasting solution led Centurion to partner with Inuteq in the development of the innovative KALIS Dry Cooling System.
Designed to be comfortable, durable and anti-bacterial, the KALIS Dry Cooling System keeps the wearer up to 15°C cooler than the ambient temperature and completely dry, for long periods. It is compatible with different types and brands of helmets and has been tested with all Centurion helmets.
The Kalis cooling pouch for the helmet hood is activated with 50ml of water, weighing just 40g, provides enhanced cooling for up to 3 days without refilling and does not require submersion, refrigeration or freezing like other cooling products. The technology keeps the fabric dry to the touch, eliminating the discomfort of wet fabric on the skin, while cooling up to 15°C below ambient temperature, even in humid environments.
Wet Cooling VS Dry Cooling
Wet cooling
- They are immersed in water, giving the sensation of wetness directly on the skin and causing discomfort.
- They only provide cooling for a few hours (depending on humidity)
- It can only be activated 100 times*, so if it is reactivated twice a day, it will only last approximately 2-3 months.
- They only provide the user with 6-12ºC of cooling.
- They are usually specified to be washed by hand (with a brush and soap).
- They are generally not antibacterial, so they can become contaminated and dirty.
*Depending on the brand used
Dry Cooling
- The KALIS Dry Cooling System is 100% dry and therefore comfortable for the user.
- Dry cooling lasts up to 3 days thanks to its internal and external membranes.
- It can be activated 750 times, lasting up to 5 years, depending on how often it is reactivated.
- It can provide up to 15ºC of cooling for the user.
- Machine washable.
- Anti-bacterial solution.
Future prospects: Five-year costs
The improvements of the KALIS Dry Cooling System over competing wet cooling technologies are designed to go beyond comfort and performance.
Certain advantages of KALIS, such as four times longer cooling and up to five times greater overall performance, can bring great advantages to companies from an investment point of view.
It is possible to halve the cost per use with dry cooling.
The data illustrates why dry refrigeration is an attractive value proposition:
The improvements of the KALIS Dry Cooling System over competing wet cooling technologies are designed to go beyond comfort and performance.
Certain advantages of KALIS, such as four times longer cooling and up to five times greater overall performance, can bring great advantages to companies from an investment point of view.
It is possible to halve the cost per use with dry cooling.
The data illustrates why dry refrigeration is an attractive value proposition:
How does KALIS dry cooling technology work?
Water is a vital ingredient in both wet cooling and the KALIS Dry Cooling System, but with very different results. Because of water’s propensity to evaporate in hot environments, KALIS can achieve maximum cooling performance lasting up to three days, compared to just five to ten hours with wet cooling.
The KALIS Dry Cooling System is designed for environments where cooling is desired and resources are limited. To activate the technology, the user applies a limited amount of water inside the pad. The water is then stored between two membranes: the outer layer is semi-permeable and allows water vapor to pass through; while the inner layer is waterproof to protect the user’s skin and keep it 100% dry.
The water vapor flows through the porous material and evaporates, cooling the user.
Kalis technology membranes
More specifically, the KALIS system is a “heat sink” activated by water’s propensity to evaporate when combined with energy (heat) from the local environment. Water is also safe, environmentally friendly and generally available, so the KALIS Dry Cooling System can be refilled easily and at no extra cost.
When water is added to KALIS, the rate at which it cools the user depends on two factors. The first is the size of the holes (or pores) in the permeable semi membrane, which acts as a ‘gate’. Larger holes mean that water vapor can advance more quickly and provide faster cooling for the wearer.
The second factor is how the relative humidity in the environment reacts with the air flow over the product. When the difference between the inside of the pad (retaining 100% relative humidity) and the ambient atmosphere (including how fast the air moves) is greater, this in turn creates a greater driving force for evaporation and will increase the cooling rate. Kalis will work best in ventilated helmets.
The KALIS Dry Cooling System helps improve workers’ concentration and performance, reduces perspiration and sweat and prevents symptoms of heat stress. By ensuring comfort, the worker is more likely to wear a helmet, making it an added safety factor. In addition, its compatibility with most helmets is second to none.
How does KALIS dry cooling technology work?
Water is a vital ingredient in both wet cooling and the KALIS Dry Cooling System, but with very different results. Because of water’s propensity to evaporate in hot environments, KALIS can achieve maximum cooling performance lasting up to three days, compared to just five to ten hours with wet cooling.
The KALIS Dry Cooling System is designed for environments where cooling is desired and resources are limited. To activate the technology, the user applies a limited amount of water inside the pad. The water is then stored between two membranes: the outer layer is semi-permeable and allows water vapor to pass through; while the inner layer is waterproof to protect the user’s skin and keep it 100% dry.
The water vapor flows through the porous material and evaporates, cooling the user.
Kalis technology membranes
More specifically, the KALIS system is a “heat sink” activated by water’s propensity to evaporate when combined with energy (heat) from the local environment. Water is also safe, environmentally friendly and generally available, so the KALIS Dry Cooling System can be refilled easily and at no extra cost.
When water is added to KALIS, the rate at which it cools the user depends on two factors. The first is the size of the holes (or pores) in the permeable semi membrane, which acts as a ‘gate’. Larger holes mean that water vapor can advance more quickly and provide faster cooling for the wearer.
The second factor is how the relative humidity in the environment reacts with the air flow over the product. When the difference between the inside of the pad (retaining 100% relative humidity) and the ambient atmosphere (including how fast the air moves) is greater, this in turn creates a greater driving force for evaporation and will increase the cooling rate. Kalis will work best in ventilated helmets.
The KALIS Dry Cooling System helps improve workers’ concentration and performance, reduces perspiration and sweat and prevents symptoms of heat stress. By ensuring comfort, the worker is more likely to wear a helmet, making it an added safety factor. In addition, its compatibility with most helmets is second to none.
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