Password recovery. Home Thermodynamics Heat Why are radiators usually located under a window? Learn in this article, why radiators are usually located under a window? Figure: Heat transfer using the example of a central heating system Not only in the pipes but also inside the room to be heated, thermal convection is formed around the radiator due to the heated air.
Animation: Convection current for radiators located below a window The relatively cool air near the floor is heated by the radiator.
Figure: Convection current for radiators placed below a window This is ultimately the reason why radiators are usually installed underneath windows! Animation: Convection current for radiators placed opposite a window If the radiator would not be installed under the window, but on the opposite wall, for example, the cold air at the window would immediately sink to the floor.
Figure: Convection current for radiators placed opposite a window. Cooling drinks with ice cubes Derivation and calculation with formula. Why does water boil faster at high altitudes? Difference between latent heat of vaporization and enthalpy of vaporization. Vineyard Frost Protection sprinkling with water.
You will want to ensure that you windows are in tip top condition and if you are losing heat through draughts or want to upgrade your windows an Evesham Double Glazing company can help you. Even with modern windows, placing the radiator under the window might still be the best option when it comes to optimising the space in your rooms. If you have smaller rooms, tucking the radiator under the window saves wall space for other items. And to get the most out of your radiator, avoid blocking it with a sofa or other large piece of furniture.
The heat will be absorbed into the furniture rather than being pushed out into the room. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment.
This site uses Akismet to reduce spam. Learn how your comment data is processed. It is another question anyway. My guess would be it's there to prevent the cooling air from accumulating below the window and flowing into the rest of the room.
A number of reason: - the wall under the window is basically useless - placing the heater under the window allows you have a more even temperature throughout the room: the window is the coldest place in the room, if you were to place a heater on the other side of the room and wanted to reach a certain temperature by the window, the other part of the room would have to be much hotter.
As the hot air goes up and the cold air goes down, the radiator is located where there is a better circulation, ie, even though the window is double glazed, there will always be cold air entering the division by the material itself. Its because the hot air that is created by the radiator heats the colder window making the glass warmer Sign up to join this community.
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Create a free Team What is Teams? Learn more. Why are radiators always placed under windows? Ask Question. Asked 8 years, 1 month ago. Active 1 year, 11 months ago. Viewed 57k times. Improve this question. Brandon Enright Placing a radiator under a window evens up the feel of a room. This is fairly uncomfortable for the occupants. Add a comment. Active Oldest Votes. Improve this answer.
No, indeed the heat loss increases as the difference in temperature is bigger, so wouldn't it be the opposite? That creates a "curtain" of moving air that helps insulate the interior of the room from the chill of the window. Moving hot air has less time to transfer its heat to neighboring cold air. Whether that's actually what happens seems like a hard-to-answer empirical question. The math required to analyzed such a system is too much for me to manage right now, but I believe the following principles apply and are objectively correct: The dissipation of heat through the glass will increase in proportion to the difference of the indoor and outdoor temperatures; the larger the gap, the faster the loss of energy to the room.
To optimize the room for minimum heat loss, move the heat sources away from the windows. To optimize the room for maximum heat uniformity, move the heat sources near the windows. John Wu John Wu 4 4 silver badges 9 9 bronze badges. But ignoring convection means this isn't necessarily a correct conclusion. A convection cell could counterintuitively see Mpemba effect produce higher heat transfer. Also: radiators usually radiate into the room, not out of the window follow-on question: why are they painted white?
One I'm looking at has a metal baffle between radiator and external wall, converting some radiated heat into convected heat.
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