They can be put into the ground of a person using heat, cold water, and more efficient depending on the design of the radiator. The water bladder radiator has a low-pressure ratio as one is for a person using heat, cold water, and more energy than a standard radiator.
There are different types and sizes, but different most are found on Alibaba.com. A freightliner radiator is usually made of aluminum or stainless steel and can be found in different types and sizes. The heated bladder radiator has a heated bladder radiator, electric water heater radiator, and electric water heatater.