This poor boy never heard sarcasm before.
This poor boy never heard sarcasm before.
Nope, no idea what sarcasm is, he really thinks I think He's smart. LOL!
He does! He really thinks I think He's smart. LOL!
Plonk! Not worth my time.
The only benifit of cast iron is it doesn't rust much. There are lots of disadvantages. As they are made in sections they often leak if taken out and the joints are stressed. They are very expensive and labour intensive to make. They heat up and cool slowly due to their mass.
Radiators made in Europe are indeed made of pressed steel. Cast iron radiators went out in the 1950's. They rely on the water inside being chemically treated to prevent corrosion. (The pipes are often copper). Hower we are moving away from this technology towards plastic pipes buried in the floor (usually though not always concrete). Water temperatures are then much lower so increasing boiler efficiency. Boiler efficiencies of over 100% are possible.
Steam radiators don't have to be very hot.
k
hak
You are showing your ignorance here. The temperature of steam depends on it's pressure. That pressure can be above or below atmospheric pressure. If it is sub-atmospheric the temperature can be as low as
120degF. If it is at amospheric pressure the temperature is 212degF. The upper limit can be as high as you like.:
ak
shak
- Hide quoted text -
Afraid not. Lower temperature systems have a higher efficiency. BTW, there are no efficient heating systems in America.
As compared to copper or aluminum, which ... don't rust at all, actually.
Yeah, that's a pretty frequent occurrence, too, taking them out and stressing the joints.
What planet did you grow up on?
That is one of the biggest advantages.
Untrue. In a closed system, once all of the dissolved oxygen reacts with the iron, no further oxidation will take place (unless additional oxygen is introduced later).
huh? rust is the metal changing into an oxide. both copper and aluminium rust, forming copper oxide (green) and aluminim oxide (white). they just don't rust orange like iron does.
How many steam heating systems are you aware of that operate at, or below, atmospheric pressure? Please cite specific examples.
I thought we were talking about a one pipe system? Maybe that was another thread, maybe not??
Sure, thermodynamics requires things to be symmetrical, that way. ;-) However, the time ramping up and down are inefficient. Waiting for the ramp up, your cold. On the way down, you've wasted that heat. Nothing for nothing.
Poor dork can't read.
I think you're illiterate. In fact I *know* it.
Facts, apparently, never are.
Not much less at the first radiator - certainly not 20F lower. Ideally there is no loss inbetween the furnace and the first radiator (wasted heat). Obviously the water is going to cool as it winds through the loop.
Hide quoted text -
Wrong. In this case, the gas fire is hotter than the loop. You want the loop to be as hot as possible to minimize the heat lost in the heat exchanger. Heat pumps operate at a lower temperature for similar reasons (lower delta-T).
Now you're just being stupid.
Wrong. Rust is, by definition, hydrated iron oxide. Copper and aluminum
*oxidize*, but only iron can rust.
Perhaps you live someplace where you turn your heat on and off every day. Where I live, it's cold enough in the winter that we leave the heating system on all the time. We *want* those radiators to stay warm.
When we lived in VT we changed it several times a day, four times automatically and another one or two manually. Here we have heat pumps, so no fiddling with the thermostat.
I like sleeping in a cold house and reasonable during the day (VT house
59night/64day with a boost to 68F in the evening) .HomeOwnersHub website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.