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2018-10-19, 08:19:55
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Pages: 1 [2]
Author Topic: Lead-out/Bring-in Energy - kinetic energy of air molecules  (Read 15892 times)
Group: Moderator
Hero Member
*****

Posts: 931
Can a spiral pipe in an air+water pumping system increase efficiency?

The assumption is that when air bubbles rise, they expand and get cooler.  Energy is then absorbed from the surrounding.  This means thermal energy enters the system and helps to lift the air+water mixture to a greater height. 

If this thermal exchange process is improved, can we lead-out or bring-in more energy from the environment?

One reasonable suggestion is to increase the time for the thermal exchange.  A spiral pipe will allow more time for this to happen.  Furthermore, if the spiral pipe is tapered, the velocity of the air+water mixture may even increase as the air expands.  Experimental verification will be helpful.

From existing data, the maximum mechanical efficiency of air pumps is around 40% in raising water as in airlift pumps.  The maximum mechanical efficiency of a water pump  can be close to 70%.

The question is – if energy of air were led-out or brought-in in the air+water pumping system, to pump a given amount of water to a given height, the supplied pumping energy may be deduced.  Is it possible to take advantage of this fact in a specially designed pump?

May God guide us.  Amen.
   
Group: Moderator
Hero Member
*****

Posts: 931
Can a spiral pipe in an air+water pumping system increase efficiency?

The assumption is that when air bubbles rise, they expand and get cooler.  Energy is then absorbed from the surrounding.  This means thermal energy enters the system and helps to lift the air+water mixture to a greater height. 

If this thermal exchange process is improved, can we lead-out or bring-in more energy from the environment?

One reasonable suggestion is to increase the time for the thermal exchange.  A spiral pipe will allow more time for this to happen.  Furthermore, if the spiral pipe is tapered, the velocity of the air+water mixture may even increase as the air expands.  Experimental verification will be helpful.

From existing data, the maximum mechanical efficiency of air pumps is around 40% in raising water as in airlift pumps.  The maximum mechanical efficiency of a water pump  can be close to 70%.

The question is – if energy of air were led-out or brought-in in the air+water pumping system, to pump a given amount of water to a given height, the supplied pumping energy may be deduced.  Is it possible to take advantage of this fact in a specially designed pump?

May God guide us.  Amen.
   
Pages: 1 [2]
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