| At this hour of energy crisis the need for energy | | | | - It is also important to study the thermodynamics of |
| conservation and sustainable energy development has | | | | that building, the type of material used, and the |
| reached its peak. More and more people are offering | | | | conversion of the sun's energy in to heat inside the |
| to take up energy saving methods of building in their | | | | building. |
| home. One among them is the making of solar passive | | | | - Maintaining the thermal comfort is a real challenge for |
| house where, you build a house to maintain a thermal | | | | the engineers and is one of the main goals of the |
| comfort inside a house without the help of any cooling | | | | passive solar house. The thermal comfort is affected |
| or heating systems. | | | | by many external factors like relative humidity, radiation, |
| Science behind a passive solar house | | | | convection, clothing, conduction, and wind velocity and |
| The sun's daily changing phases and annual cycles are | | | | air temperature. |
| studied to design a building and an active system like | | | | - The sites at which the building is located, the |
| the solar photovoltaic or mechanical ventilation is not | | | | construction, solar orientation, shading and glazing |
| installed. The passive solar systems does not employ | | | | components are all parts of the passive solar housing |
| electrical devices such as inverters, fans, pumps and | | | | system. Windows, doors, floors and walls can be |
| other controls to use the solar heat. | | | | designed so as to reject the surplus heat during |
| - A passive house is the result of an alternate green | | | | summer and absorb enough heat during winter. |
| architecture for buildings. The basis of the passive | | | | Modern technology and computer modeling has helped |
| solar building is developed by studying the path of the | | | | in the application of this technology to a large extent. |
| sun during various seasons such as winter and | | | | The path of the sun has to be studied for finding the |
| summer. | | | | ultimate position of the sun's rays and how it falls upon |
| - There are other factors to be counted such as the | | | | the structure. The traditional device known as the |
| climatology or the study of weather conditions for a | | | | 'heliodon' is used by engineers to study the path of the |
| certain period of time. It tells the various atmospheric | | | | sun. The rooms are later arranged matching with their |
| conditions like the amount of breeze, rain, clouds and | | | | thermal needs in the passive solar house design. |
| much more. | | | | |