I have those old, vintage cast iron radiators in my house on a wood boiler. They are not marked for direction of flow as far as I can see but I always assumed the hot should come in the bottom and as I recall from the early days of owning the house, thats how it was. But when someone installed a new boiler on my existing pipes some years ago, they reversed the flow-hot goes in top, flows out the bottom. I immediately realized an increase in wood consumption. Not being a heating contractor myself, I only figured out today that is what happened and I wonder how much money I've thrown away because of this contractor mistake. So I'm trying to figure out in real numbers how much less efficient these radiators are when flow is reversed. Any ideas how I can find out??
- posted
13 years ago