Heating direct gain

solar radiation accumulated inside

heating direct gain

The direct gain is the accumulation of solar radiation inside living spaces.

This practice saves money due to the use of solar radiation: you use the space as a collector needed to accumulate heat during the day and release them during the night.

During the day the solar radiation passes through a glass facing south, and preferably inclined, said collector and the floor and walls must be constructed appropriately to accumulate heat.

There are various types of accumulators:

  • Masonry thermal accumulator Thermal Wall made of fired bricks, earthen bricks or stone.
  • Floor accumulator, the heat of radiation is retained by the pavement hit by the sun.
  • Water accumulator, which is usually contained in the wall of water . He is struck by the sun for as many hours as possible. The materials used are plastic or metal containers.


The modern fireplaces


Passive solar heating


The first chimneys leaning against the wall


The fireplace in the center


Heating in homes, is it healthy?


The hearth and seasoned wood

Portaombrelli design Luca Perlini

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