So-called "passive" houses are built using special materials, insulation, and heating technology so they use almost no energy for heating.

这些“被动式”房屋采用特殊的建筑材料、隔热方式和供暖技术，几乎不消耗能源用于采暖。

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Some companies have developed stoves that use passive air flows, better insulation and 60% less wood to reduce black carbon emissions by around 70%.

一些公司已相继开发出一些新型炉灶，这些炉灶使用被动气流、绝热性更好、木材消耗减少60%、同时也相应减少黑碳排放量70%左右。

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Passive heating and cooling with thermal mass and insulation, Geothermal, radiant cooling and heating along with solar and photovoltaic panels contribute to the house's energy efficiency.

采用保温隔热材料被动供暖和制冷，同时利用太阳能板和光电板采集地热能和光辐射能制冷与采暖，提高了房屋的能源效率。

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This approach is described as a "passive" system because once initial conditions are set inside the flask, a continuing presence of helium and good insulation is all that is required to maintain those conditions.

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