Passive Solar Technique: Solar Direct Gain

Solar energy systems are considered as the best alternative to the traditional ones. Solar energy is being converted into other forms of energy pretty successfully now-a-days. This is one of the most reliable and efficient thing to do. You are not required to spend a lot of money on fuel anymore. All you need is sunlight.

Applications of solar energy

Applications of solar energy

Solar energy is available all over the world, and you do not have to pay for it unlike other sources of energy. The function and efficiency of the devices that run on solar energy depends upon the amount of sunlight they are subjected to for the entire day. Lighting and heating are two of the most significant applications of solar energy systems.

Passive solar gain

If you are interested in getting a solar energy system for your house, you are recommended to get quality parts like solar panel, battery, etc. When it comes to heating, direct gain is the simplest technique regarding passive solar gain. You must be aware of the fact that the passive solar heating does not require too much maintenance. In fact this sort of heating needs the minimum amount of maintenance as compared to other techniques.

Active solar gain

On the other hand, the active solar heating totally relies on the mechanical devices for the transfer and distribution of heat, which makes it obligatory for the person to maintain the components well. If you are looking for a home heating system that is sun-based, then you are suggested to consider direct gain solar heating.

Heat absorbents

Special heat absorbent thermal masses are used in the building to make it possible for the system to absorb maximum amount of heat. As the sunlight becomes incident on the surface, this material absorbs it to release heat at night. Convection is the process that is responsible for the distribution of heat at night throughout the building.

Direct gain design

Direct gain design

The windows of the house are kept south, and are insulated with the help of transparent glazing to get the maximum direct solar gain. The insulation help to prevent the out flow of heat once trapped inside. Most of the people get confused between direct and indirect solar gain passive systems, because in both cases similar design materials are used.

Difference between direct and indirect gain

However, the major difference between these techniques lies in the placement of that material. In case of indirect solar gain, the thermal mass is kept between the sunlight and the place that is supposed to be heated. On the other hand in case of direct gain, the collection, distributions and storage of the heat energy is done at the same place.


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