既有公共建筑制冷机房运行能效评价体系完善与实证
Improvement and empirical evaluation of operational energy efficiency assessment system for refrigeration plants in existing public buildings
摘要：
目前公共建筑能耗中制冷机房能耗占比超过60%,合理的能效评价指标能指导既有公共建筑节能改造以实现节能减排目标。在实际工程应用中发现,当前国内相关评价标准不够完善。对此,本文提出了一套可以快速、有效指导既有公共建筑节能改造的运行能效评价体系,在现有评价体系基础上,完善基于运行数据的机房评价方法与指标,实现对机房系统及设备的分级评价与能效诊断。为验证该评价体系的可用性、准确性,使用该评价体系对重庆某商业建筑制冷机房设备进行了诊断分析,并与现场设备实测数据进行了对比。结果表明,使用该评价体系可以准确地反映公共建筑制冷机房运行情况及存在问题。
Abstract：
At present, the energy consumption of refrigeration plants accounts for more than 60% of the energy consumption of public buildings. Reasonable energy efficiency evaluation indicators can guide the energy-saving renovation of existing public buildings to achieve energy conservation and emission reduction goals. In practical engineering applications, it has been found that the current national evaluation standards are insufficiently comprehensive. To address this, this paper proposes a set of operational energy efficiency evaluation systems that can quickly and effectively guide the energy-saving renovation of existing public buildings. Based on the existing evaluation systems, this study improves the evaluation methods and indicators for refrigeration plants based on operational data, enabling graded evaluation and energy efficiency diagnosis of plant systems and equipment. To verify the usability and accuracy of this evaluation system, a diagnostic analysis is conducted on the refrigeration plant equipment of a commercial building in Chongqing, using actual field data for comparison. The results show that the proposed evaluation system can accurately reflect the operational status and problems of the refrigeration plant in public buildings.
Keywords:existing building; operational energy efficiency evaluation; energy-saving renovation; refrigeration plant; energy efficiency analysis