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AIR INFILTRATION, INSULATION AND WINDOWS ARE THE LARGEST CULPRITS. LC
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∙ 15y ago
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How do overhanging eaves keep a house cool?
By reducing the amount of direct sunlight that hits the walls of a house, thereby reducing the amount of heat that is absorbed through walls and into the interior of a house. Longer eaves means more shade and less heat....
5 ways in which friction is not useful?
I am aware of three, that can be relevant in some cases. 1) Energy losses, 2) increases wear and tear, 3) produces heat.
Ways to reduce the heat from a house?
Open windows and doors. Turning the heat off works too!!!
What generates heat when the motor is running?
The frictional losses and the resistive losses generate heat in a motor
Why cant a machine be one hundred percent affective?
The reason why amachine cant be one hundred percent effective is as a result of losses.For Electrical machine such as alternator we have Mechanical losses(such as windage and frictional losses)and Electrical losses(such as copper loss in the rotor winding and stator winding).In Mechanical machine the main losses are windage and frictional losses.NOTE;ALL THIS LOSSES RESULT IN THE PRODUCTION OF HEAT,THUS REDUCING THE EFFICIENCY OF THE MACHINE.
Is a transformer heat neutral?
All transformers produce some heat, and reducing the heat is an design aim in transformers because heat, like all energy, costs money. Heat losses can be reduced in a transformer by using thicker copper wire in the windings and a thicker iron magnetic core. Obviously there is an optimum somewhere in the middle that transformer designers aim for.
What is airconditioning?
Usually it is a machine for reducing the temperature of the air inside a house or car by using a heat-pump that works on the same principle as a refrigerator. It just makes your house a big refrigerator that you sit inside.
Is hysteresis loss considered heat loss?
In general even though energy is lost during hysteresis it is not called as heat losses . Generally I2R losses are called as heat losses because in these tye of only in these energy is lost in the form of real heat
Ways to reduce heat from a house?
There are several ways to reduce heat from a house. This included opening the windows and doors at least once a day. This is known as cross ventilation, which helps secure cool air in homes and offices. You can also increase airflow by using fans and the AC system.
What is wave sapping?
Reducing the temperature of a heat-wave.
Is no heat loss and no core loss the same thing?
No. Core losses would be hysterisis loss and eddy current losses. Heat losses most likely is referring to I2R (I squared R) losses, which is losses due to the resistance of windings, and is dependent upon loading. There are other losses that are not heat related and core related - such as losses due to vibrations (the core is a major player here, but part of the noise is from windings and cooling systems). I've never heard someone refer to losses as "no heat" or "no core". These are fundamentally impossible - there WILL be core losses, and there WILL be I2R losses if you have a transformer and it is loaded.
How do you get bumps?
There are many many many ways to get goosebumps, one of the more common ways is when you are cold. Goosebumps are really tiny muscles in your skin contracting, making the skin bunch up that surround the hair, which result in goosebumps. The body preserves heat this way, which is why the hairs stand up, thus reducing heat loss. :)
