ISO 13790国际标准给出了一种简化的计算方法，用于评估住宅或非住宅建筑或其一部分的空间供暖的年度能源使用。该方法基于准稳态近似。它包括计算建筑物加热至恒定内部温度时的热损失、内部和被动太阳能热增益，以及维持建筑物内指定设定点温度所需的年热量。与其他类似标准（如ISO 9164）相比，本标准有几个新特点，例如被动太阳能装置的太阳能增益、间歇加热，以及应用于住宅、非住宅和多区域建筑。 引文:研讨会，ASHRAE交易，第108卷，pt。2.

The ISO 13790 international standard gives a simplified calculation method for assessment of the annual energy use for space heating of a residential or a nonresidential building or a part of it. This method s based on the quasi-steady-state approximation. It includes the calculation of the heat losses of the building when heated to constant internal temperature, internal and passive solar heat gains, and the annual heat required to maintain the specified setpoint temperatures in the building. When compared to other similar standards, such as ISO 9164, this standard has several new features, such as solar gains of passive solar devices, intermittent heating, and application to residential, nonresidential, and multi-zone buildings.