1. Definition of passive solar energy

Passive solar energy is a kind of solar energy technology that utilizes the building itself without solar panels to heat and cool the house.

2 The direction of passive solar energy

The direction chosen should ensure full contact with the sun, and the direction towards the south can have the most contact time with the sun, so the direction of passive solar energy is the best towards the south.

3. Classification of passive solar energy

(1) direct beneficiary type: directly through the sun irradiated by the south to heat-absorbing buildings, indoor walls and furniture, so that they can absorb most of the heat energy, so that the temperature rises, there is a part of the heat to save the heat, and then the release of the absorbed heat, so that the temperature at night and cloudy days to achieve a suitable temperature, south-facing curtains should be well sealed to ensure that the loss of heat to minimize.

(2) indirect sunlight: sunlight through the glass window or easy to collect heat in the building for indirect heating, the other part is absorbed by the ground and wall between the sun, and the interior of the room and the outside to have contact with the room’s temperature through the heat cycle to the room temperature to reach the warmth of the room both to provide heat to the room can also reduce the loss of heat in the room

(3) heat storage wall type: the southern wall can be fully heated to leave a suitable area to absorb sunlight, through the conduction of sunlight, irradiation of the temperature sent to the room, the easy to absorb the sunlight of the building is painted black or easy to sunlight absorption of the color, to fully absorb more sunlight

(4) roof pool type: suitable for that kind of summer especially hot place, the plastic bag filled with water as a tool to save heat, set up a thermal insulation device, open the thermal insulation device in winter, so that the plastic bag filled with water to fully absorb the energy generated by the sun to make the house heated, close the thermal insulation device in the summer, the cooler water plastic bag to absorb the heat of the room for refrigeration.

(5): combined type: the type with their own advantages for combined use, can improve the collection of heat time, the different lighting system of light can be better combined to improve the efficiency of the collection of sunlight

4. Advantages of passive solar energy

A way of heating or cooling without solar panels, cost reduction, simple construction and easy management, health, higher efficiency, is a kind of environmental protection, resource-saving technology, can be a good solution for the purpose of heating and cooling, will be stored in the building, can also be used for indoor lighting

5. Disadvantages of passive solar energy

Such a technology is relatively single, slower response, there are still some adjustments in the process of use, how to choose a better location, choose a more suitable material, colder regions there are still challenges to conserve heat technology           

6. Application of passive solar energy

Passive solar energy is widely used in Germany, the United States, Australia and other developed countries, as well as our homes, schools, hotels, and some office buildings.

Summarize

Passive solar energy is a kind of technology that does not need solar panels to heat and cool houses, simple structure, easy to manage, when choosing passive solar energy, you have to choose the right environment to make the building fully absorb the sunlight to heat and cool the house, the direction of the windows towards the south, so that the sunlight is more adequate, avoid being blocked by tall buildings or tall trees to affect the efficiency of energy saving efficiency, good, protect the environment and save resources. Good, protect the environment and save resources.