Kryo Ice-based Cooling Systems
Why We Need Body Cooling
Our bodies generate heat, even when we are sleeping. The more work we do, the more heat we produce. A person at
rest generates about 100 watts of heat. A person bicycling at 9 mph generates over 400 watts of heat.
If we are not able to cool ourselves, especially because of high temperatures, humidity, or protective clothing, our core
body temperature will rise. As our body temperature rises, we make more mistakes, become dehydrated, and can
suffer heat exhaustion. We become less productive and may have to limit our working time because of heat stress.
Prolonged high body core temperatures can lead to heat exhaustion or heat stroke.
Body cooling systems can help us control our body core temperature, reduce mistakes and dehydration, and help us be
more productive. The U.S. Army uses body cooling systems in its helicopters and in many combat vehicles.
Kryo Ice-based Systems
Kryo ice-based cooling systems provide low-cost, effective, portable cooling for persons working in hot or humid
conditions or who wear protective clothing.
They are especially useful in aviation, vehicles and racing, industrial and rehabilitation, nuclear power, firefighting, and
medical applications.
Cooling System Components
Kryo ice-based systems provide simple, effective, inexpensive body core cooling.
They consist of four main components
1. An ice chiller that pumps ice-cold water through a cooling garment worn by the user
2 A cooling garment that circulates cold water across the body core, removing body heat.
3. An insulated water hose that transports cold water to the user and returns warm water back to the chiller
4. A power source and optional accessories such as extension cables or an on-off switch
Kryo Ice Chillers
Kryo chillers hold ice and water. They pump cold water through an insulated water hose to the cooling garment and return the warm water to the chiller where it is
re-chilled by the ice. Ice absorbs a substantial amount of heat when it changes phase from ice to water. Ice chillers use body heat to melt the ice and heat the ice water. Melting a pound of ice requires 42 watts of heat. Raising the temperature of a pound of water from 32 to 70 degrees requires an additional 11 watts of heat. A good rule of thumb is that an ice chiller will provide 50 watts of cooling per pound of ice. Users typically require 125 to 175 watts of cooling per hour, depending on work load. The type of ice affects the amount of cooling the chiller delivers. Block ice contains the least air and provides the greatest amount of cooling, with ice cubes providing less and crushed ice providing the least.
Ice chillers are available in 13, 19, and 30-quart sizes. They can be secured in a mounting tray or can be carried. The most common size chiller is the 19-quart, representing approximately 85% of chillers in use. When space is limited or cooling times are short, the 13-quart chiller is a good choice. Industrial and rehabilitation users, such as industrial painters or fire fighters, often select 30-quart chillers because of their long cooling time.
Kryo water hoses carry cold water from the ice chiller to the user and return warm water from the user to the ice chiller.
They are insulated with heavy-duty, closed-cell, EDM foam that protects the water lines and keeps the water cold. All fittings are dry-release. The water flow stops when disconnected. They are also emergency release. Give them a sharp pull and they will disconnect.
Hoses are available in 8, 12, 20, 30, and 40 foot lengths. A one-person hose allows one person to connect to the chiller. A two-person hose allows two persons to connect to the chiller without purchasing any additional hose.
Economical Portable Cooling
Battery-powered Kryo cooling systems provide low-cost portable cooling. The 13 and 19-Quart systems are light weight and
are easily carried by the user.
Kryo cooling systems can be operated full-time on the battery. They can also be connected to a fixed power source in a
building, vehicle, or aircraft and operated on the battery when away from the fixed power source.
Kryo Power Sources and Accessories
Kryo ice chillers operate on 12-volt DC power. The power can be supplied by a battery, an AC adapter, a vehicle power outlet
adapter, or a direct connection to a 12-volt vehicle electrical system.
All Kryo electrical components have standard 2.1 mm X 5.5 mm plugs and jacks that plug into each other and lock together so
they don’t accidently disconnect. No electrical knowledge or ability is needed except to connect the direct connection cable
to a vehicle electrical system.
Chiller Electrical
The chiller operates on 12 V DC power and draws
approximately 1.5 amps. It has a 6″ electrical power cable
ending in a locking female jack to accept a power source.
Power Sources
All power sources end in a male plug that can be plugged into the
chiller, an on-off switch, or into an extension cable.
Battery
Kryo’s battery turns Kryo into a portable cooling system
that can be easily carried.
The 8.3 amp-hour battery will run the chiller for approximately 7 hours.
It includes a 110-volt AC charger and 2X4-inch adhesive
Velcro hook-and-loop to attach the battery to the chiller
cover or another flat surface.
AC Power Adapter
The AC power adapter plugs into a standard 110-volt U.S.
electrical outlet. It can use 110-240 volt, 50 or 60 Hz AC
input power.
Power Outlet Adapter
The vehicle power outlet adapter plugs into a standard
12-volt DC automotive power outlet or cigarette lighter
outlet.
Direct Connection Cable
The direct connection cable can be permanently connected
to a vehicle’s 12-volt electrical system.
Accessories
On-Off Switch
When you plug the power source directly into the chiller, the
chiller will begin to pump water at the maximum flow rate.
An on-off switch turns the chiller pump on and off. You can
also use it to turn off the chiller if you feel too cold.
Extension Cables
Power extension cables allow you to place the chiller in a
convenient location and run the power cable to a battery
or power source some distance from the chiller.
For example, you can place the chiller behind your seat
and run an extension cable to the front seat where it will
connect to a power source such as a battery
Kryo Mounting Trays
Kryo trays allow secure location of a Kryo cooler in a
vehicle. It is pre-punched with holes to allow it to be
bolted to a vehicle.
Why Kryo Garments Cool Better
Engineering – Kryo cooling garments are engineered to provide the best combination of effective cooling and comfort.
They have been extensively tested in our heat test chamber using a heated sweating mannequin that simulates the human
body under heat stress.
Tubing Pattern – Kryo’s tubing pattern concentrates the tubing on the front and back of your body core to maximize
your cooling. The tubing is spaced so that the cooling effect is distributed evenly over your entire body core.
More Tubing – Kryo averages 80 feet of water tubing, double the amount used by some manufacturers. More tubing
means more cooling.
More Circuits – Kryo uses eight water circuits, twice as many as some manufacturers. Eight circuits distribute the
cooling water more evenly and send it back to the chiller as soon as it has absorbed your body heat.
Hi-tech Manifolds – Kryo gathers the tubing into a high-performance flexible manifold that has a lower water pressure
drop and 10% more water flow than other designs. It is so innovative that it is protected by Patent No. 9,399,149
“Flexible Fitting for Heat Exchanging Garments.”
Innovative Tubing – Kryo’s proprietary matte-finish tubing is fire-retardant and self-extinguishing. The tubing is 0.096”
ID and 0.156” OD, the exact dimensions identified by researchers as the best combination of cooling effect and comfort.
Dry Release – Water hose couplings are dry release. The flow of water stops when they are disconnected.
Quick Release – Hose couplings are emergency release. They should automatically release when you pull on them
one-by-one. They may not automatically release if you pull on two couplings at the same time
Kryo Cooling T-Shirt
Kryo’s Cooling T-shirt is the perfect low-cost cooling garment.
We start with a Hanes Beefy-T made with 6.1 ounce, 100%
cotton fabric.
Then we carefully stitch 80 feet of cooling tubing to it.
The result delivers superior cooling, can be worn under other
clothing, and is machine washable.
Comfort Features
• Soft, comfortable 100% cotton fabric
• Natural moisture-wicking
Colors: White, Black
Size: X-Small, Small, Medium, Large, X-Large, 2X-Large,
3X-Large
Kryo Fire-Resistant Cooling Vest
Kryo’s Fire-Resistant Cooling Vest, with its smooth front zipper,
is easy to put on and take off.
The vest is made from an incredibly comfortable hi-tech fire-resistant blend of 70 Modacrylic, 23% Tencel, and 7% Lycra knit.
The fabric is breathable, moisture-wicking, and anti-microbial.
Wear it with the smooth comfortable fabric next to your skin or
over a T-shirt with the tubing on the outside. The vest’s four-direction knit gently hugs the tubing close to your body to keep
you cool.
Fire-Resistant Features
• Fire-resistant Modacrylic fabric
• Fire-resistant, self-extinguishing tubing
Comfort Features
• Soft, smooth, comfortable stretch knit fabric
• Superior moisture-wicking
• Anti-microbial protection kills microorganisms such as
bacteria, viruses, mold, and mildew.
Colors: Natural, Black
Size: X-Small, Small, Medium, Large, X-Large, 2X-Large,
3X-Large
Kryo SFI Certified Cooling Shirt
The SFI Foundation has tested and certified that Kryo’s SFI
Certified Cooling Shirt meets SFI specification 3.3 for fire
resistance.
The shirt is made from an incredibly comfortable hi-tech fire-resistant Modacrylic knit fabric that is breathable, moisture-wicking,
and anti-microbial.
Wear it with the smooth comfortable fabric next to your skin and
the tubing on the outside. The shirt’s four-direction knit gently
hugs the tubing close to your body to keep you cool.
Fire-Resistant Features
• Fire-resistant Modacrylic fabric
• Fire-resistant, self-extinguishing tubing
Comfort Features
• Soft, smooth, comfortable stretch knit fabric
• Superior moisture-wicking
• Anti-microbial protection kills microorganisms such as
bacteria, viruses, mold, and mildew.
Colors: Natural, Black
Size: X-Small, Small, Medium, Large, X-Large, 2X-Large,
3X-Large
