They used to make those in the 60-70s with a fan attachment that was off to the side and blowed air into the tubes and forced heat out the top tubes … but any heat you get would be sucked up the chimney with the draft of a open fireplace
My grandparents had a whole fireplace insert. It was awesome. It was a metal stove insert that had a firebox and pipes around the sides and top that it forced air in and out. It was extremely efficient. You would build a fire and have the doors open all day, and at night you would put a big log on, close the doors, crack the vent, turn the fan on, and it would heat the house all night long. I miss those days, and my grandpa.
Thanks! I bet, with longer pipes sticking out a little further and bent upwards, and with no washer which i would reason would just cause air resistance, there would be better "draft" and thus greater heat. However, there must be something to that Venturi effect, so maybe some twisty metal thing where "the washer goes"? But afaik, the object is to not restrict airflow.
I'm actually thinking yes, since the washer would have created a venturi effect the air may have shot out faster which seems reasonable that it woukd help. Thanks!!
I'd go with a larger pipe opening where the air comes in cold that tapers down all the way so it speeds up the air and shoots it out the top tubes. Also I'd make that whole contraption go in along the floor of the firebox, the bend up along the back wall and then come out at the very top of the firebox so it's not so obvious and actually hidden more.
@@groverscorner2364 That isn't the venturi effect. Yes, the fluid will increase velocity if you restrict the area in a jet stream, but only if you assume a constant flow rate (thank you Bernoulli). The venturi effect is a completely different animal. Welding a washer in place might speed up the jet stream, but it will more likely create backpressure that works against what you're trying to accomplish and reduce the overall flow rate.
