need help with some homework please!! i have no idea what to do
If you are speaking of boilers that heat the the older style radiators without using a pump I can try and explain. They were set up with large pipes that often sloped downward toward the boiler. The way water flowed was that the hot water would rise up toward the radiators and the colder water would just return by gravity back to the boiler to continue the cycle. The same way warm air rises and colder air falls only water is the vehicle.
