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In passive solar building design, windows, walls, and floors are made to collect, store, reflect, and distribute solar energy, in the form of heat in the winter and reject solar heat in the summer. This is called passive solar design because, unlike active solar heating systems, it does not involve the use of mechanical and electrical devices. [1]
A double envelope house is a passive solar house design which collects solar energy in a solarium and passively allows the warm air to circulate around the house between two sets of walls, a double building envelope. This design is from 1975 by Lee Porter Butler in the United States.
The term passive house has had at least two meanings in the literature. Its earlier meaning, used since the 1970s, was for a low-energy building designed to exploit passive solar technologies and establish a comfortable indoor temperature with a low-energy requirement for heating or cooling.
1972-1975: Prototype Roof Pond House. This solar house was built in 1972 as a prototype for the roof pond system of heating and cooling invented by Harold Hay. Several aspects distinguish the project: First documented 100 percent heated and cooled passive solar building. Only instrumented solar house in operation during the 1973 energy crisis.
Compared to the roof vents on most houses, a Passive House has just a single air intake. A powerful filtration system is installed to control the flow of air, which helps keep embers out.
The Canadian Passive House standard, administered by the Canadian Passive House Institute [28] In British Columbia the above programs align with the BC Energy Step Code, a provincial regulation to incentivize (or require) a level of energy efficiency in new construction beyond the base building code. The code was designed as a technical road ...