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I am not sure but I think it's convection because convection is when Convection is broadly the movement of any molecules through any fluid state, including liquids and gasses. So when you open a window in a hot room you are allowing the fresh cool air from outside to come into the hot room
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What is the mode of heat transfer from a room heater?
room heater warm by radiation
Which process do air currents transfer heat energy throughout the room?
convection
How can a Black board in a room stays at the same temperature as rest of the room?
A blackboard would be the same temperature as the rest of the room. If the sun shone through the window directly onto the blackboard, the blackboard would absorb more of the sun's heat, and become warmer that the rest of the room.Dark colours absorb heat better than light colours.
When a room is being cooled by a fan which method of heat transfer is being used?
A fan does not cool a room. It only cools moist objects in the room, so the method of cooling is evaporation.
In which direction did transfer of heat occur in your finger dipped in cold water?
Assuming that 'cold' means normal room temperature, then heat would flow from your finger to the water.
How to calculate percentage of natural lighting in a room?
Calculate the area of the room. Calculate the area of the window (or whatever opening) Room Area*100/Window Area
Is opening the windows in a hot room an example of conduction?
Well conduction in the movement of heat through air or liquid. So I wouldn't say that opening the window is try something like water being boiled:)
What is the mode of heat transfer from a room heater?
room heater warm by radiation
Which process do air currents transfer heat energy throughout the room?
convection
What does the word ventilate mean?
To provide air. Such as--> Opening the window allowed us to ventilate the room.
How do you change the window safety?
There is no window safety. If you look at contour of door there is no room for a full piece of glass because of rear wheel opening.
Why does a room heat up or cool down?
the heater may be turned on more people more heat if window opened it gets colder and less people in the room less heat
How does a fireplace heat a room?
A fireplace heats a room by radiation. That radiation is the direct transfer of energy by electromagnetic waves.
Can you use a window air conditioning unit in a room that does not have windows and just put it on a counter?
There are A/C units available that do not require window installations, they are stand alone units. If you have a window unit and use it on a counter, you will not only have a flood (condensation)but you will notice that the back of the air conditioner is very hot, thus heating the air that you are trying to cool. It will work for a bit but you will eventually reach a plateau where the air will not get cooler. A portable A/C needs an exhaust pipe to expel the heat and condensate out of the room. If you put a window A/C unit on a counter, not only will you get a pool of water, the room temperature will increase as the only thing being added to the room is heat in the form of electricity. An A/C unit works by moving heat from one place (the room) to another place (outdoors). In doing this work, it uses electricity that is given off as additional heat. If the entire unit is inside the room, it will move heat from one side of the room to the other, but because of the added energy, the average room temperature will continue to increase to the point where the heat transfer out of the room through walls is equal to the electricity coming into the room. That will not happen until the room temperature is higher than that of the adjoining rooms.
Use more heat with window open if thermostat in another room?
Even if the thermostat is in another room, you are releasing some heat out that open window. This means that the furnace (or boiler) will have to run longer to make up for that loss of heat, and the room in which the thermostat is located will take longer to come up to the set point of the thermostat.The HVAC Veteran
How can a Black board in a room stays at the same temperature as rest of the room?
A blackboard would be the same temperature as the rest of the room. If the sun shone through the window directly onto the blackboard, the blackboard would absorb more of the sun's heat, and become warmer that the rest of the room.Dark colours absorb heat better than light colours.
Differentiate the three methods of heat transfer?
Convection, radiation, and conduction are the 3 types of heat transfer... Compare They all transfer heat from a hotter mass to a cooler mass. Contrast Conduction transfers heat through solids. Convection transfers heat through liquids and gases. Radiation transfers heat through electromagnetic waves.
