Water absorbs more heat per weight than almost any other material on Earth

| by David Velan
Water absorbs more heat per weight than almost any other material on Earth

Ordinary water has extraordinary properties. It can absorb more heat per weight than almost any other material on earth. Put another way, it takes a lot of energy to increase the temperature of water, and as water decreases in temperature, it gives off a lot of energy. This property explains why a pool stays relatively cool on a hot day and also why heating water is typically one of the largest components of any energy bill despite only using hot water for a small part of the day compared to other activities like heating or cooling the house, and lighting it. Because of water’s ability to retain heat, typically only a small part of the heat energy is consumed in use, such as in a shower, and the rest is lost down the drain. This warm drain water is a source of untapped clean energy. It can be used to preheat incoming fresh water in order to cut the amount of energy consumed to heat water to a comfortable temperature.

Warm water down the shower drain

About EcoDrain: The EcoDrain™ is a unique patent-pending heat exchanger which transfers heat from hot shower waste water to cold incoming water. Visit the EcoDrain website for more information.

Topics: Bathroom, Heating & Cooling, Kitchen, Plumbing & Fixtures, Water Heaters, Water Saving Devices

Companies: EcoDrain

David Velan
David Velan is the founder and CEO of Ecodrain Inc. Ecodrain designs and sells heat exchangers to recapture heat from warm drain water. Ecodrain has conducted extensive research, building many prototypes and conducting thousands of experiments in order to build high performance devices that are safe and easy to use. David Velan has a bachelor’s of applied science in mechanical engineering degree from the University of British Columbia, and an MBA from McGill University.

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