Re: [Phys-l] Heat transfer lab

[Bernard Cleyet <bernardcleyet@redshift.com>]

This reminds me of my (Costco) one pipe circulation system to preheat the water in the am.  The hot and cold are connected by a relief valve (under the upstairs sink) so when the timer at the hot water heater turns on the hot water pump the hot water from the heater flows up to the sink and back thru the cold to the cold supply, neat-oh.   All the previous systems I've seen use an extra small pipe for the return.  

bc thinks the inventor was very shmart.


On 2010, Nov 17, , at 07:43, LaMontagne, Bob wrote:

> Steam systems, like the one in my old house, use no aids. The boiler turns water to steam and it travels through the pipes to the radiators. There are small vents on the radiator that pop open when the pressure rises and produce a dressure differential allowing the steam to travel to the radiator. After condensation in the radiator, the water flows back to the furnace purely by gravity - the pipes are pitched to allow the return.
>
> Bob at PC