Energy-saving air space capable of exhausting and foaming

Abstract

The energy-saving air space capable of exhausting and foaming can be used for ultra-low energy consumption buildings, and can solve the problems that a closed ventilation air space is weak in heat preservation capacity in winter and the heat loss of exhaust air of the buildings is large. Comprising a bottom module, a bottom plate insulation board, a wall module, a top module, a wall body insulation sun shield, a top plate insulation sun shield, an openable low-radiation air interlayer, a water system pipeline, a water pump and a miscellaneous water tank, wherein the wall module and the top module are provided with flow blocking layers; the wall body insulation sun shield and the top plate insulation sun shield are provided with openable ventilation openings; the system is characterized by comprising a layer-by-layer exhaust system, a foam liquid supply and foaming system capable of opening and closing a low-radiation air interlayer, a foam liquid supply control system for the low-radiation air interlayer capable of opening and closing, low-radiation heat storage and heat preservation layers attached to the outside of a wall module and a top module, and an energy-saving ventilation structure of the low-radiation air interlayer capable of opening and closing. According to the energy-saving air interlayer capable of exhausting and foaming, double energy-saving gains of heat preservation in winter and indoor exhaust heat recovery of a building with an airtight enclosure structure and a seasonal adjustable ventilation air interlayer can be remarkably enhanced.

Description

technical field [0001] The invention relates to the technical fields of building energy saving and building enclosure structures. Background technique [0002] Ventilated air interlayers are often used to cool buildings in summer. For example, the openable and closable low-radiation air interlayers in Patent No. 2017113026094 "A Composite Enclosure Structure for Low-Energy Consumption Container Houses" use thermal pressure and wind to Ventilation and heat dissipation, reduce the surface temperature of the air space and improve the heat insulation of the building in summer; in order to reduce air resistance, the thickness of the ventilation air space will be appropriately increased, generally between 50mm and 1000mm; EN ISO6946-2007 "Building components and building elements — Thermal resistance and thermal transmittance — Calculation method" shows that: For horizontal air interlayers that transmit heat upward (such as in horizontal roofs in winter air space) or vertical air...

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Problems solved by technology

[0003] At present, the outer envelope structure of ultra-low energy consumption or near zero energy consumption buildings usually adopts airtight air barrier film and doors and windows with good airtightness to reduce the heat loss of air infiltration; the outer envelope structure of the current container house Due to the use of airtight materials such as steel plates, such as doors and windows with good airtightness, the overall airtightness of this energy-saving container house is also very good; the improvement of airtightness makes this type of building unable to rely on air infiltration to provide enough fresh air To maintain the healthy breathing of indoor personnel, the lack of indoor fresh air volume makes it necessary for such airtight buildings to adopt mechanical ventilation in winter; in order to avoid the heat loss of ventilation in winter, most of the existing ultra-low energy or near zero energy The recovery unit recovers part of the heat from the exhaust air; the core component of the fresh air heat recovery unit is an air heat exchanger, such as a rotary air heat exchanger, which has a heat exchange surface for cold and hot air; because the air in the existing air conditioning system The size of the heat exchanger limits the contact area of ​​hot and cold air, and the contact time in the flow of hot and cold air is relatively short, so it is difficult to achieve a large proportion of exhaust heat recovery through the existing fresh air heat recovery unit; the current general exhaust heat recovery efficiency Only about 65%, the air temperature at the exhaust air outlet in winter is still higher than the outdoor air temperature, resulting in a large heat loss in the building exhaust air in winter, which affects the improvement of the energy efficiency of existing ultra-low energy consumption or near zero energy consumption buildings

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