The placement and size of registers is critical to HVAC efficiency. Place your cold air return vents on the inside walls of buildings at the lowest point. The return vent pulls cold air from the bottom of the room and returns it to the furnace to be reheated and returned as warm air. Unlike supply vents, return vents do not need to be cased in metal.
Supply air from furnaces and air conditioners should be on outside walls. The return air vent openings need to be on the opposite side of the room so the conditioned air is pulled across the room. If the supply ducts are in the floor, then the return air should be located up high. Wood floor registers are perfect for newer or newly built homes, while nickel, cast iron, copper, bronze, and brass floor registers are perfect for older homes and homes that are decorated in a more traditional style.
They even make granite registers to match granite tiled floors and countertops. Not keeping all air vents open can also lead to: Increased energy use. According to energy. Closing vents might seem like a good solution in some cases, such as when furniture blocks them, but vent deflectors offer a better, more energy-efficient solution. Here are some benefits to using these deflectors and how using them the right way can conserve energy in your home.
Your email address will not be published. In our living area though, we have a vent on the furthest part of the west wall, in the floor under a window Would make better sense to be on an interanl wall, but I guess for spacing out I see why it was put here. The other vent in that space is approximately 2m along the floor from the return vent!
The other vents are under windows in 2 bedrooms, but against internal walls in the 3rd and the bathroom. Airflow to the return vent would not be improved or hampered by moving these vents so they were all on internal walls. The return vent and the controller are both themselves within a meter of 3 doors, one of which is external, so things get a little confused there. They are supposed to be under the window both vents and hydronic panels to generate convection currents which distribute the heat For example: Powered by Google Docs.
Joined RF in Resigned in The placement of forced-air heat registers or baseboard heating units under the windows counteracts this process by sending up warm air to mix with the cool. Supply register vents should be in every room as well. Located on the outer walls, under windows, in the ceiling, or on the floor, placement depends on the heating or cooling system as well as the construction of the home.
Ceiling Registers: a Good Choice for Cooling In a warm climate where you need cooling most of the year, ceiling registers are generally preferable. Since hot air rises and cool air sinks, having vents in the ceiling is the best way to get cool air dispersed throughout your home. Floor mounted vents will usually make your unit work harder to get your home at the right temperature. When you point your vents upward, the expelling force of the AC pushes cold air into the top part of the room, displacing or cooling through the transfer of thermal energy down the temperature gradient the warm air here.
Moisture Control Static vents, positioned throughout older homes, controlled moisture. I don't know if anyone else has noticed this but in most buildings and most rooms, radiators are predominantly placed under a window. Now, in my eyes, that is the worst place to put them; hot air rises, reaches the window which no matter how well insulated it's still letting out heat, in loose terms and the thermal energy of the air disperses around the window area, thus not doing much to warm up the room.
Am I wrong to think this? I mean, I can hold my hand close to my window and feel that it is colder there than at the other end of my room, but then again, my room does warm up when the radiator is on. The reason is because the heat loss occurs mostly in the windows and the fenestration. The idea is that you would like the incoming air to be heated up. Also, it creates an air curtain that prevents more heat from being lost through these exposed areas.
Finally, it makes the temperature of the room more or less uniform. If the heaters were placed at the center of the room, you would create a large temperature gradient, resulting in drafts and discomfort for the occupant. Since this is a physics forum I assume the OP is interested in a quantitative answer in terms of the efficiency of the system and how it differs based on the relative positioning of heat sources and heat sinks. 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. The dissipation of heat within the room follows the inverse square law subject to perturbations such as drafts, etc. Partly practical, the wall under the windows isn't useful for anything else. We had a house where the heaters were placed in the middle of the only empty walls, so nowhere you could put furniture, bookcases, etc.
Before double glazing there would be a draft from the windows so the idea was to heat this incoming air by having a radiator immediately below the window. As described in the other answers, putting the radiators or hot air vents in a forced-air system under the windows offsets the greater heat loss of the windows, but there is another reason.
As room air flows over the surface of a window, it will lose heat to the window and the outside. This can cause moisture in the air to condense out onto the window. In cold enough conditions, the window will accumulate frost or even layers of ice on the inside surface. The hot air rising off a radiator will have less tendency to deposit moisture onto the window the glass surface will be somewhat warmer.
As Programmer mentions, by putting the radiator in front of the area most prone to heat loss and ingress of cold air, you are effectively screening off the room from cold air. However, there is also the fact that radiators are often quite a bit hotter than other heat sources such as forced air. Therefore it makes sense to put it in the coldest part of the room, not only due to efficiency reasons, but due to the fact that if it gets too hot you can easily open the window and let out some of the excess heat.
As the hot air goes up and the cold air goes down, the radiator is located where there is a better circulation, i.
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