A ventilation structure is set on a parting portion between an outer wall member and an eave member, and extends in a longitudinal direction along the parting portion. The ventilation structure includes an outer wall base member, the outer wall member provided on the outer wall base member through a furring strip, the eave member provided upward beyond the outer wall member and an upper end of the furring strip, and a ventilation member set in a space between the outer wall base member, the furring strip, the outer wall member and the eave member for ventilating an aeration layer between the outer wall base member and the outer wall member and an exterior. The ventilation member is constituted of a frame member and an aeration member set on the frame member. The frame member includes a first vertical portion, a top surface portion, a second vertical portion and a bottom surface portion. The aeration member includes a plurality of vent holes passing through the same from an outer surface to an inner surface.

A fenestration assembly comprising a sliding glass assembly that slides between a fully closed position and a fully open position in which the sliding glass assembly is received into a pocket of the fenestration assembly. The pocket is covered on at least one side with insulation. The fenestration assembly may have two sliding glass assemblies. The fenestration assembly may be used in an energy efficient building system.

An improved double skin facade system for buildings is disclosed. In one embodiment, the double skin facade system is a multi-functional device that can be used in a variety of ways to provide heat, produce and store solar and wind electricity, take advantage of natural and biological properties of plants, and provide cooling and natural ventilation. In one embodiment, the device is comprised of a mounting structure, and multiple columns of interconnected modules. Through the interconnected movable modules, the double skin facade system can easily switch functionalities between a heater, ventilator and cooling system. The device is easy and inexpensive to operate and its functionalities can be changed with simple touches of buttons.

A window structure is configured to form a principal chamber enclosing a first window pane installed in an exterior wall of a building. The window structure includes a first surface configured to absorb solar energy and a main frame including a second window pane. An axial hinge is configured to allow to the main frame to tilt between a first position and a second position. When the main frame is tilted in the first position, the first surface is positioned in a first orientation that allows the first surface to directly receive sunlight through the second window pane. When the main frame is tilted in the second position, the first surface is positioned in a second orientation in which the first surface is prevented from directly receiving sunlight through the second window pane. The window structure may be used for ventilating the structure and shading during the warm weather.

A fenestration assembly comprising a sliding glass assembly that slides between a fully closed position and a fully open position in which the sliding glass assembly is received into a pocket of the fenestration assembly. The pocket is covered on at least one side with insulation. The fenestration assembly may have two sliding glass assemblies. The fenestration assembly may be used in an energy efficient building system.

Disclosed herein is a hybrid ventilation apparatus capable of both natural and forced ventilation. In the case of a natural ventilation mode, a worm gear is rotated in a normal direction by drive force of a drive unit under control of a control unit so that a pressing member engages with a rotation guide protrusion and rotates a damper, thus opening a flow passage, and then the worm gear is reversely rotated by drive force of the drive unit to return the pressing member to its original position, thus allowing a user to rotate a roller upwards and downwards and rotate the damper so that the degree of opening of the flow passage can be adjusted. Thereby, rapid inflow of outdoor air can be blocked, and a cold graft phenomenon, in which the temperature of indoor air rapidly drops, can be prevented.

A thermal convection conversion system is provided. The system includes the installation of one or a plural of induction vents at floor level. Cold air at the floor level is drawn into a vertical stud cavity in a wall framing using an intake fan. The vertical stud cavity serves as a duct to allow the cold air to be drawn upward to a top plate of the wall framing. The top plate is modified with a steel supporting bracket that allows passage for the cold air to access a plurality of plenum spaces created between the ceiling joists and ceiling material, such as drywall or plaster. An exhaust duct is formed in an opposite wall, gathering air from the plenum spaces and exhausting the air through a vent at the floor level.

A system and a method are described for the passive conditioning of internal environments having ventilated roofs as coverings; the method involves absorbing at least part of the heat coming from the external environment during the hottest hours of the day, so as to reduce the heat entering the environment to be conditioned and transferring the absorbed heat back to the external environment during the night, the absorption being implemented through Phase Change Materials, PCM, in which the heat exchange between PCMs and the external environment is favored by an air current that is generated spontaneously due to the effect of natural thermal gradients.