""Are u saying pumping water cost more than air??"
Some engineer here ought to be able to calculate the cost difference of moving water with an air pump vs water pump. I do know it takes much more electricity to circulate & move water with a fountain compared to using a air pump.
Think about it. Water weighs 999.972 kilograms/cubic meter. Weight of air is 1.225 kg/m3 difference is 816 times heavier for water compared to air. Thus is is much more energy efficient to pump air than water. This translates into you can move or circulate much more water much more efficiently if you use air lift rising bubble technology compared to moving water with an electric pump. Now what you do with that compressed air can be efficient or inefficient.
Last edited by Bill Cody; 02/13/17 02:55 PM.
