The food sector is a major consumer of energy and growing efforts are being made in the search for solutions that will guarantee the efficient and sustainable use of energy resources. Among the different sectors, wineries are attracting particular interest due to the continuous growth of the global market and production. Surveys conducted in the winemaking sector have highlighted the importance of performing accurate energy audits and have identified the installation of efficient refrigeration systems as a promising solution in a variety of cases. Unfortunately, the savings achievable by efficient cooling technologies are often estimated using simplified approaches which do not take into consideration the actual operating conditions of the equipment typically variable on seasonal and daily bases. In this paper a novel bottom-up procedure is presented, aimed at developing reliable profiles for refrigeration and air-conditioning loads and at assessing the extent to which more efficient chilling units could contribute to reducing electricity consumption. The use of standard Seasonal Energy Efficiency Ratios is critically discussed and a novel customized indicator is proposed. The method is applied to a medium-scale winery producing still red and white wines and sparkling wines, for which only aggregated energy consumption data are available. After deriving detailed load profiles, it is proven that the use of standard seasonal indicators leads to 56.85% and 83.87% overestimation of potential energy savings, respectively, for low and medium temperature cooling energy uses, confirming the importance of adopting seasonal indicators customized on the actual operating conditions of chillers.

粮食部门是能源的主要消耗者，并且在寻找能够保证有效和可持续地利用能源的解决方案方面，人们正在做出更大的努力。在不同的行业中，由于全球市场和产量的持续增长，酿酒厂引起了特别的兴趣。在酿酒行业进行的调查强调了进行准确的能源审核的重要性，并确定了在各种情况下安装高效制冷系统是一种有希望的解决方案。不幸的是，通常使用简化的方法来估算通过有效的冷却技术可实现的节省，这些方法没有考虑到设备的实际操作条件，这些条件通常会在季节性和日常基础上变化。在本文中，提出了一种新颖的自下而上的程序，旨在为制冷和空调负载开发可靠的配置文件，并评估更有效的冷却装置在多大程度上有助于减少电力消耗。严格讨论了标准季节性能效比的使用，并提出了一种新颖的定制指标。该方法适用于生产静止的红，白葡萄酒和起泡酒的中型酿酒厂，其仅提供了汇总的能耗数据。在得出详细的负载曲线后，事实证明，使用标准的季节性指标会分别低估中低温冷却能源的潜在节能量的56.85％和83.87％，