- #1
Ayrity
- 92
- 0
http://www.gizmag.com/go/4936/
theres the link in case anyone hasnt seen it already. pretty simple concept, and it sounds like a great idea to me, but I don't quite understand 2 areas of the specific design, maybe somone can help.
Firstly, is the heat from the exhaust gasses really enough to instantaniouslly boil water? and in that same light, how is the water not pumped through the turbine? in other words, how can they make sure that only steam is used to spin the turbine? do they use gravity in their setup so that the turbine just sits higher?
secondly, in the article they say that the turbine will be connected directly to the crankshaft. I do not understand how this would be possible, won't the turbine be spinning at a variety of different speeds and be somewhat unpredictable in RPM because of the dramatic lag that the heat transfer and spin up in the turbine would cause? so even if it was geared down, you wouldn't know what ratio to have put inbetween the turbine shaft and the crank. the only solution i could think of (since i have been researching them recently) is to put a type of CVT (continuously variable transmission) between the two so that the gear could be selected depending on what speed the crank was turning at.
thanks for any help guys
theres the link in case anyone hasnt seen it already. pretty simple concept, and it sounds like a great idea to me, but I don't quite understand 2 areas of the specific design, maybe somone can help.
Firstly, is the heat from the exhaust gasses really enough to instantaniouslly boil water? and in that same light, how is the water not pumped through the turbine? in other words, how can they make sure that only steam is used to spin the turbine? do they use gravity in their setup so that the turbine just sits higher?
secondly, in the article they say that the turbine will be connected directly to the crankshaft. I do not understand how this would be possible, won't the turbine be spinning at a variety of different speeds and be somewhat unpredictable in RPM because of the dramatic lag that the heat transfer and spin up in the turbine would cause? so even if it was geared down, you wouldn't know what ratio to have put inbetween the turbine shaft and the crank. the only solution i could think of (since i have been researching them recently) is to put a type of CVT (continuously variable transmission) between the two so that the gear could be selected depending on what speed the crank was turning at.
thanks for any help guys