联合国预计到2050年全球制冷需求增两倍以上

Core Insights - The United Nations Environment Programme (UNEP) predicts that global cooling demand will triple by 2050, exacerbating global warming and straining electrical grids [1] - UNEP emphasizes the need for sustainable cooling solutions, such as improved building designs and ventilation [1] Group 1: Predictions and Trends - The report titled "Global Cooling Outlook 2025" forecasts that demand will grow fastest in Africa and South Asia due to population and wealth increases, as well as more extreme heat events [1] - 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] Group 2: Recommendations - UNEP advocates for a "sustainable cooling pathway," focusing on passive cooling technologies, low energy consumption, and hybrid cooling methods that combine fans and air conditioning [1] - If these sustainable cooling methods are widely adopted, greenhouse gas emissions could be reduced by 64% by 2050, benefiting 3 billion people from worsening heat and saving $17 trillion in energy costs while avoiding $26 trillion in grid investments [1] Group 3: Passive Cooling Solutions - UNEP particularly recommends passive cooling strategies, 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 UNEP Executive Director stresses that cooling facilities must be viewed as essential infrastructure, akin to water, energy, and sanitation, and that reliance on air conditioning alone is not a viable solution to the heat crisis [2]