Defines passive solar design using glazing

1. What is Passive solar design?It is usually a part of the design of a building that uses sunshine to heat and light a building without mechanical or electrical devices.In this case:South Facing Glass Information source of picture

2. What is Direct Gain? It is when sunlight enters a building through windows, warming the interior space. The living space is a solar collector, heat absorber and distribution system because south facing glass admits solar energy into the house. Then it is stored in the thermal mass materials in the house, such as masonry floors and walls. Adirect gain system will use 60 - 75% of the sun’s energy striking the windows. Source of Picture

3. South facing glass, also known asglazing, is a key component of any passive solar system in the northern hemisphere. The system must include enough solar glazing for good performance in winter, but not so much that cooling performance in summer will be compromised. Source of Picture

4. direct-gain systems are more dependent on double or triple glazing windows to reduce heat loss Source of picture

5. Double glazing is a bit pricey, you'll pay about £300 for a window Source

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