The results of past and ongoing activities, in successive IEA SHC (solar heating and cooling) Tasks, suggest enormous potential for solar cooling technologies to reduce greenhouse gas emissions. However, solar thermal cooling still faces barriers to emerge as an economically competitive solution. IEA SHC Task 48 was introduced to gather learnings from existing installations, and to find technological and market solutions, which could enable industry to deliver solar thermal driven heating and cooling systems that are efficient, reliable and cost competitive.

The selected experiences of these research activities were clustered into 10 qualitative key principles for successful design and operation of SHC systems. Three existing systems are fully discussed in a solar cooling design guide (Mugnier et al., 2017). This paper aims to introduce these key principles in its general format. The background to the qualitative statements is explained, supplemented with examples from the context of Task 48 and compared with recent literature. Furthermore, a survey was conducted among SHC experts, who provide an assessment of the importance of the principles.

The result shows that all principles have their eligibility. However, it turns out that there are three main categories of principles: (i) essential, (ii) important and (iii) controversial. Following the key principles is not a guarantee, but they can support researchers, designers and contractors to implement solar heating and cooling systems successfully.

在过去的IEA SHC（太阳能采暖和制冷）任务中，过去和正在进行的活动的结果表明，太阳能冷却技术在减少温室气体排放方面具有巨大的潜力。但是，太阳能热冷却仍然面临着成为具有经济竞争力的解决方案的障碍。引入IEA SHC任务48的目的是从现有安装中收集经验，并找到技术和市场解决方案，这可以使工业界提供高效，可靠且具有成本竞争力的太阳能热驱动供暖和制冷系统。

这些研究活动的选定经验被归纳为SHC系统成功设计和运行的10个定性关键原则。太阳能冷却设计指南中已充分讨论了三个现有系统（Mugnier等人，2017）。本文旨在以一般格式介绍这些关键原则。解释了定性陈述的背景，并补充了任务48中的示例，并与最新文献进行了比较。此外，在SHC专家中进行了一项调查，他们对原则的重要性进行了评估。

结果表明，所有原则都有其资格。但是，事实证明，原则主要分为三类：（i）基本原则，（ii）重要原则和（iii）有争议的原则。遵循关键原则并不能保证，但是它们可以支持研究人员，设计人员和承包商成功实施太阳能采暖和制冷系统。