Core Insights - The United Nations Environment Programme (UNEP) projects that global cooling demand will triple by 2050, exacerbating global warming and increasing the burden on power grids [1][2] - The report titled "Global Cooling Outlook 2025" highlights that the fastest growth in cooling demand will occur in Africa and South Asia due to rising population, wealth, and extreme heat events [1] Group 1: Environmental Impact - Greenhouse gas emissions related to cooling are expected to rise significantly, reaching 7.2 billion tons of CO2 equivalent by 2050, nearly double the levels of 2022 [1] - UNEP emphasizes the need to rethink cooling as a cornerstone of heat resilience and sustainable development rather than a source of emissions [1] Group 2: Sustainable Cooling Solutions - UNEP recommends adopting "sustainable cooling pathways," focusing on passive cooling technologies, low energy consumption, and hybrid cooling methods that combine fans and air conditioning [2] - If widely implemented, these sustainable cooling methods could reduce greenhouse gas emissions by 64% by 2050, protect 3 billion people from extreme heat, save $17 trillion in energy costs, and avoid $26 trillion in grid investments [2] Group 3: Passive Cooling Strategies - UNEP particularly advocates for passive cooling solutions, such as optimizing wall and roof designs, shading, and improving ventilation, which can lower indoor temperatures by 0.5 to 8 degrees Celsius [2] - The executive director of UNEP stresses that cooling facilities must be regarded as essential infrastructure, akin to water, energy, and sanitation, and that passive, energy-efficient, and nature-based solutions are crucial for meeting growing cooling demands while achieving global climate goals [2]

联合国环境规划署11日发布报告，预计到2050年全球制冷需求达到现在的三倍多，会进一步加剧全球变 暖趋势和电网负担。为此，环境规划署呼吁采取更可持续的制冷方案，如改进建筑设计、改善通风等。 环境规划署建议采用"可持续制冷途径"，重点关注被动制冷技术、低能耗以及将风扇和空调结合使用的 混合制冷方式等。据估算，若这些制冷方式得以广泛采用，到2050年，与制冷相关的温室气体排放量将 较预期水平减少64%，30亿人可免受愈演愈烈的高温天气影响，能源成本可节省17万亿美元，同时避免 高达26万亿美元的电网投资。如果全球电力行业实现快速脱碳，与制冷相关的温室气体排放量还可能进 一步下降。 据法新社报道，环境规划署尤其推荐被动制冷方案，比如优化墙壁和屋顶设计、遮阳、改善通风等。这 些策略有助将室内温度降低0.5摄氏度到8摄氏度。 "随着致命的热浪越来越频繁且极端，制冷设施必须被视为不可或缺的基础设施，与水、能源和卫生设 施一样。"联合国环境规划署执行主任英厄·安诺生说，"但我们不能靠空调来摆脱高温危机，这会助推 温室气体排放，增加成本。被动、节能和基于自然的解决方案可以帮助满足日益增长的制冷需求，在我 们追求全球气候目标的 ...