Not true you are only thinking of convection
Leave the oven door open after use in winter?
- Thread starter atikovi
- Start date
I actually wasn't thinking at all about convection. Where do you think the heat inside the oven goes with the door shut vs open?
...and? The word "unless" implies that what follows it would be an exception to what is being stated in the rest of the sentence. So "...unless the heat gets vented directly..." implies unless the OP states it is vented, I'm assuming it is NOT vented to the outside. If it is getting vented then what I'm stating does not apply. I stand behind what I said, unless it is getting vented, 100% of the heat contained in the oven will be released back into the kitchen and opening the door verse keeping the door closed only affects how quickly the heat is released into the kitchen.
Ok but this assumes none is conducted out the back of the oven if oven is on outside wall as pointed out initially.
It depends on how well the wall is insulated and yeah sure, the kitchen is not a perfectly closed system, but for all practical purposes.
Unless the oven is on an outside wall where the heat would go to the outdoors, it makes no difference.
Heat does not "disappear". If it comes out fast or slow, the BTUs are the same.
Heat does not "disappear". If it comes out fast or slow, the BTUs are the same.
Post #9: "Inside wall probably makes no difference assuming no loss through floor. Outside wall? Maybe helps."
Post #17 and others
Even then, that would have to be one poorly insulated outside wall to make any real difference. One step further, if the entire wall was poorly insulated then:
1. If you opened the door heat would leave the oven quickly through convection warming the kitchen room air quickly and causing a greater temperature differential between the room air and the outside wall.
2. Keep the door closed and while some of that heat will inevitably escape through the outside wall directly adjacent to the rear of the oven by conduction/thermal radiation the rest of it will slowly radiate into the room causing a lower temperature differential between the room air and outside wall.
The temperature gradient is found in every equation for thermal conduction/convection as well as thermal radiation. So one scenario increases the room air quickly but creates a greater delta-T with the outside wall and over a greater surface area and the other scenario increases the room temperature more slowly with a lesser delta-T but loses some additional heat to a small area of wall behind the oven. My edumacated guess is they are essentially equivalent for practical purposes and certainly within the limitations of measuring heat transfer in an open system like a kitchen.
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I am thinking the same in
That said, my buddy was an energy use/insulation assessment guy, contracted by Puget Sound Energy some years back. He had his own gear. Pretty easy to tell if folks had the oven on - on outside walls with IR images. So there is some loss there.
I wonder how 2x6 construction with closed-cell foam would perform? My house was built in 1987 with 2x4 construction and fiberglass insulation while my buddy down the street has a new home with 2x6 and closed-cell foam. On a 0F day, my walls are considerably cooler to the touch compared to room air while his walls are (within my ability to detect any difference) exactly the same as the room air. New construction really is considerably tighter than even 30 years ago and I just envision $$$ leaking out through my walls all winter...lol.
The extra from 2x6 and modern insulation is noticeable for sure. Our power bills don’t even vary much in this house. With a heat pump and propane tank - the propane goes to BBQ and water heater hahahaha not much to heater and fakey fireplace
I get it, but I still love this forum. Nothing like a hot cup of coffee standing backwards over an open, shut off, 350 degree oven. The original hot cross buns
Hermann
Site Donor 2023
Right now in moderate weather it is about the same price to heat the home for a hour or so in the morning with my oven. I just sit a fan on the stove top and blow that oven heat into the living room and the ceiling fan sends it upstairs.
Here we get daily electric use on the Evergy (the progressive name for what used to be Kansas City Power and Light) website. I might use 2 Kwh in a hour of use heating with the oven. 35¢ worth. Early last Spring when my furnace was out of service for a week waiting on parts, my electric bill only went up $10 or so compared to a year earlier that had similar temps. Nat Gas for those days would have higher. It is expensive here due to the great Texas energy debacle, which Evergy was part of. And wee's still payin".
Here we get daily electric use on the Evergy (the progressive name for what used to be Kansas City Power and Light) website. I might use 2 Kwh in a hour of use heating with the oven. 35¢ worth. Early last Spring when my furnace was out of service for a week waiting on parts, my electric bill only went up $10 or so compared to a year earlier that had similar temps. Nat Gas for those days would have higher. It is expensive here due to the great Texas energy debacle, which Evergy was part of. And wee's still payin".
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Hermann
Site Donor 2023
They will discuss Salt to the last grain.
Hermann
Site Donor 2023
It's only money. They will print more.
Open or closed, won't make a bit difference on the energy inside your home. open could, in theory, heat up your thermostat resulting in shutting the hear off for a while. Exterior rooms would be cooler for a bit. But as far as your heat bill, it's vasically a wash.
I close it because it's in the way open, might bang my shin or just don't want to have to work around it. Makes no difference really, the heat is still released into the room.
We all know ( Or should know ) that heat travels from a hot object to a cool one . ( Fourier's Law ? ). This means that the stove , the surrounding cabinet , etc, are all Heat Sinks . All of that heat in a closed oven is not always radiating out into the kitchen at a rate that you can enjoy . It's being transferred at different rates depending on MANY variables . I'm convinced that if you want the biggest bang for the buck , open the **** door .
