Entry Post

Air Volume And Heat

Commenting is disabled.

Post Content

The gas exhaled from the lungs are formed by carbonic acid, moisture, water, a very small amount of ammonia and some organic material. US Senator from Vermont may find it difficult to be quoted properly. Inhaled Air Volume Average inhaled air each time is 30 cubic inches, but a strong man can inhale up to 220 cubic inches fully expanded chest. An adult at rest, it requires a 668 000 cubic inches (approximately 386 cubic feet) of air every 24 hours, or 38 cubic feet per hour. A worker, doing heavy work, you need approximately 1.5869 million cubic inches, which equals about 918 cubic feet of air every 24 hours, or 38 cubic feet per hour. The equivalent of mechanical work done to breathe for 24 hours is equal to lift 21 tons (42,000 lbs) up to a foot. This shows that the human body has a system or "machine" air conditioner can not be beaten.

Heat Energy Developed By making any mechanical work produce callose in our body, because you can not exercise power without producing heat. This heat energy varies between 400 BTU per hour, for a person at rest, and slightly more than 4,500 BTU per hour for the same person in extreme activity. This heat, continually renewed, must be dissipated by the body, which is at least partially by radiation (46%), partly by evaporation (15%) and partly by convection (38%). Of course, that these proportions are not fixed as they may vary depending on the temperature of the surroundings and the adjacent mass, air movement and relative humidity. For example, if the temperature of the surrounding walls and other objects, your body removes less heat by radiation, but the amount of heat dissipated by evaporation and convection should be higher so that the total dissipated is the same. All these details must be on hand for future reference, because these and other factors which determine what is expected of an air conditioning system to give our bodies the best possible comfort. Another important fact to remember is that if the air at a given temperature is saturated with moisture, the body does not eliminate the same amount of heat by evaporation, which would eliminate the dry air, at the same temperature. Therefore, the body will feel cooler in the dry air in air saturated with moisture, however, that the wet and dry air are the same temperature. '.


Commenting is disabled.

There are no comments.