Zeolite Cooling Properties
Zeolite’s cooling process is similar to transpiration—according to the United States Geological Survey, transpiration is the process by which moisture is carried through plants from roots to small pores on the underside of leaves where it changes to vapor and is released into the atmosphere. Because Zeolite Max is a naturally porous material and has a crystal lattice structure, it can absorb and hold water vapor for long periods of time.
The typical zeolite cooling system requires cycling between absorption and desportion. While heat is released in the zeolite, the cooling is seen at the evaporation level. Evaporation accounts for the movement of water to the air from the zeolite granule. If absorption proceeds in an evacuated environment, zeolite will attract the water with such force that the internal pressure will drop dramatically. The remaining water in the attached vessel evaporates and cools down turf fibers due to evapotranspiration (ET). According to the U.S. Geological Survey, evapotranspiration is defined as the sum of evaporation and transpiration, or the water that is lost to the atmosphere from the ground surface. This process is an important part of the water cycle and also aids in cooling your turf!
Figure 5 shows the desorption phase. For a comparison to the absorption and transpiration of heat, the left container (sorber) in takes on the role of a single zeolite granule saturated with water under sunlight, and the right container is the (condenser) after evapotranspiration effect. When the zeolite is saturated with water either by soaking using any water source or condensation, desorption is initiated by heat from sunlight at high temperatures. The adsorbed water molecules are forced to evaporate (desorption), and condensation takes place in the condenser. The sequence of adsorption/desorption processes is completely reversible.
The absorption of Zeolite Max is very strong and therefore permits this product to produce extremely high efficiencies for absorption with synthetic turf. Zeolite Max allows heating and cooling at the same time and will create an ideal temperature for your synthetic grass application. It is key to rinse your Zeolite Max with water in order for evaporation to occur.
Currently the zeolite mines produces more than 1.4 million tons of zeolite annually and it can be expected that the worldwide demand and consequently the production will further increase for a multiple of uses. Only 97% + pure zeolite is adequate for use as an infill for any synthetic turf application as lower purity can destroy turf fibers and/or cause drainage issues due to the negative elements it holds.