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Ventilation is intentional or unintentional flow of air in a certain space or area to add to the quantity of fresh air and pull out the stale air out. Ventilation is essential part of home improvement. A mistake made by not creating proper ventilation places inside any house or building can be very dangerous. Since centuries architects have been taking care of ventilation areas and vents inside various designs of houses. Proper ventilation not just allows air to exchange inside the building but it also assists in maintaining the temperature of the place according to the existing climatic conditions. There are many types of ventilation:

Mechanical ventilation: it is quiet opposite to natural ventilation and takes place through a direct injection or a handling unit to any space using a fan. The exhaust fans can increase the natural ventilation or infiltration process and therefore enhances the rate of the air flow inside the building. Use of artificial or mechanical source is carried out in case of mechanical ventilation. Most of the times use of exhaust fan is made to push out the stale air and bring in oodles of fresh air to maintain the temperature of the building.

Infiltration: It is a process that is different from ventilation and is mostly used to collect ventilation air inside any room or building.

Natural ventilation: it usually involves connect the naturally available sources that remove or supply air within an enclosed space. Natural ventilation is further divided in to two processes like stack ventilation and wind driven ventilation. Both these types of ventilation are different from each other. Stack ventilation depends upon the buoyancy of the heated up air. The more is the amount of heated air the better is the stack ventilation. Wind driven ventilation, on the other hand depends on the force of the existing wind to push and pull the air from an enclosed place. Wind driven ventilation can be easily understood through its name. It is derived through a force, push or thrust of air within a particular space.

DVC or demand controlled ventilation helps in a better ventilation in home improvement designs. It helps in incorporating fresh air and saving the energy. Demand controlled ventilation is used to reduce the sum total of outdoor supply of air. The demand controlled ventilation is fitted with CO2 censors that help in managing the ventilation according to the number of occupants. In design occupancy, the demand controlled ventilation provides the same quantity of outdoor air as done by the ventilation rate method. Although demand controlled ventilation is able to generate considerable amount of energy savings at times when occupied space is below the level of design.

All these types of ventilation are considered while designing a building or house to allow right amount of air inside it. 

Tags: ventilation, different kinds of ventilation, natural ventilation, infiltration

We all know that air conditioning uses a great deal of electricity. Well, those of us who regularly use our air conditioners know that, anyway. We get a monthly reminder from the electric company to hammer the point home.

The amount of money people are spending to keep their homes cool is having a profound effect on the heating and cooling industry. Homeowners are in hot pursuit of efficient cooling systems, hoping to reduce both the sizes of their bills and their carbon footprints.

We all know that summer electric bills can get high and that gives us some clue about the levels of energy consumption associated with cooling. However, our personal experiences don’t provide us with a look at the big picture. When you examine the overall levels of AC power consumption, you begin to understand just how much we’re spending in money and natural resources to stay cool.

Air conditioners use a great deal of electricity because they’re basically doing battle with the Second Law of Thermodynamics, which states that temperatures will always tend to even themselves out. Heat flows to cold. An AC will try to “beat” nature by taking a refrigerant through states of compression and expansion. That refrigerant will absorb heat from the interior of your home and will then be pushed outside where it will “dump” the heat. This only works because of the compression and decompression of the gas and that relies on electrically-powered pumps and compressors.

To make a long story short, when you’re fighting entropy you’re going to use some energy. A lot of energy, actually.

Consider the fact that almost twenty percent of the electricity used in the US every year is used for cooling. That’s right, one-fifth of our electricity consumption is AC-related. That amazing level of use has actually been one of the chief reasons why our power grid is outfitted with excess power generating equipment. The spikes in power use for which those systems are built come from our air conditioning use.

You can think about it this way. If you add up the amount of power we use for cooling, the total quantity is actually more than the TOTAL electricity consumption for Indonesia and India added together. We use more electricity to stay cool than the fourth and second largest countries in the world (in terms of total population size) use for everything.

When you realize just how much juice is mainlined by air conditioners, it’s easier to develop an appreciation for a growing trend of looking for ways to cool homes more efficiently. Air conditioner power consumption is more than just a way to inconveniently raise your summer electric bills. It’s a truly massive use of natural resources.

Tags: air conditioning, energy consumption