Soccer Moms and Kangaroos: Playing It Cool

evaporative cooling

Nature has some really cool ways to beat the heat! Just like humans, animals sometimes suffer on hot, sweltering days and scramble to find a cool hideout or ways to cool down. Because heat is life threatening in many areas of the world, living creatures have evolved to survive in scorching temperatures. That’s why humans sweat, evaporating high energy molecules from the skin and body, thus lessening our core temperature. Like humans, animals have also evolved, using evaporative cooling tricks to stay cool in hot climates. These techniques are so efficient, that hardly any energy is necessary to cool off on a hot day, whether you’re a worker on a hot production line, a soccer mom or a kangaroo.

Water has a high latent heat, meaning it requires a lot of energy (heat) to change phase from a liquid to a gas. When water absorbs that much heat from other surfaces, it evaporates. The water cools the air and surfaces it contacts as it evaporates. Animals take advantage of this scientific principle. When a dog pants, it rhythmically generates air over the moist surfaces of its mouth, throat, and tongue. The excess moisture evaporates, cooling the dog’s throat surfaces, dilating blood vessels, and resulting in cooled blood that circulates throughout the dog’s body. Kangaroos lick their forearms to utilize evaporative cooling in the scorching grasslands and deserts of Australia. In upwards of 120 degrees, the saliva evaporates and their warmer blood circulates past the cool forearms to reduce their core body temperature. A very cool video shows the effect using thermal images here: The thermal images are at about 2:21 in the video. This shows the amazing versatility of evaporative cooling, which has allowed many animals to adapt to potentially deadly heat.

For example, birds and other mammals employ unique ways to incorporate evaporative cooling techniques in their daily lives as well. Vultures, for instance, urinate on their legs when daytime temperatures are high. The urine then evaporates, cooling the legs while drawing more heat from the body. Owls, on the other hand, will flap the loose skin under their throats to move air over their mouth orifice during hot nights. This “gular fluttering” achieves the same result as panting. Both panting and gular fluttering are extremely energy efficient movements which generate very little added heat.

Even fungi are getting into the act. Some mushrooms release their water to evaporation. As the air cools beneath the mushroom cap, it sinks, creating a small wind. The mushroom spores spread by floating on this wind, helping ensure propagation of the species. Plants use evaporative cooling as well, through a process called transpiration. The plant pumps water up to its leaves through tiny water channels in their xylem, then the water evaporates through pores in the leaves called stomata. The evaporation cools the plant and allows it to continue growth, flowering, and other important functions. In fact, plants are terrifically efficient at this, evaporating 90% as much as a leaf sized patch of water directly in the sun, despite stomata only covering a couple percent of the surface area of the leaf. A large maple tree can evaporate up to 60 gallons of water per hour. And, best of all, the water evaporated from trees and plants helps cool the global climate – so plant more trees!

Yes, nature certainly has some very cool ways to use evaporative cooling. While we don’t want to challenge Mother Nature (we live in Florida… it wouldn’t be wise!), Breezer Mobile Cooling technology mimics the fundamental principles of evaporative cooling that many plants, fungi, and animals use to survive, and we are bringing this technology to the human species. Businesses can stay cool using much less energy than refrigeration, and with a significantly smaller carbon footprint by using nature’s low energy evaporative cooling techniques. The power of evaporative cooling improves quality of life, raises worker morale, improves air quality, and offers other tangible benefits (higher profits for example). Like the trees above maintaining productivity through evaporative cooling, workers produce 2% more output for each degree cooled. Breezer’s mobile evaporative air cooling design conditions provides very efficient low cost cooling. Using principles harnessed by kangaroos evolving in harsh conditions, the passive evaporative cooling strategy of the Power Breezer solves the same problems as mechanical evaporative cooling systems or swamp coolers, but without the complex equipment or messy maintenance problems.

To learn more about the Power Breezer’s clean atomizing technology that provides only cool, refreshing air with no chemicals, visit