Re: thermo syphon

Posted by Wayne Swenson on April 27, 2005 at 20:58:07 from (66.191.70.4):

In Reply to: thermo syphon posted by Mark Hogberg on April 27, 2005 at 20:07:06:

The as the liquid in the engine gets hot, it rises and flows towards the top of the cylinder head and from there to the top of the radiator. at the same time, liquid travels down through the radiator getting cooler because the fan is pulling air past the finned tubes containing the liquid. The cooled liquid collects at the bottom of the radiator and now travels up into the engine block completing the cycle of hot liquid rising & cooler liquid falling.
Basic science that worked very well until engineers started speeding up the engines, enlarging the cylinders, advancing the timing, increasing the compression and modifying the fuels all to get more horsepower. That evolution required water pumps to circulate the liqids more efficiently.
Then the next step was to pressurize the cooling system so a smaller radiator could do the job of a larger one. ($$$ savings??) Copper shortages in WW II required the use of pressurized systems with the non-copper radiator tubes & fins so the tractor would not overheat.

Follow Ups:

• Re: thermo syphon Farmall Mike 18:20:29 02/20/06 (0)
• Re: thermo syphon Hugh MacKay 02:21:01 04/29/05 (0)
• Re: thermo syphon Haas 05:56:05 04/28/05 (0)

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