In this study, an application of the adapted Co-Heating methodology for thermal performance evaluation of closed refrigerated display cabinets (RDCs) has been presented. A novel test series comprising three experiments has been developed and demonstrated on a commercial RDC with four doors to evaluate the envelope heat transfer coefficient, thermal inertia, infiltration at idle state and dynamic infiltration caused by door operations. The latter two experiments were conducted in parallel with the condensate collection method for validation of the results for infiltration. It was concluded with good (<10%) conformance between the methods that the infiltration at idle state for the tested RDC is approximately $0.022\text{kg/s}$ and that one $15\text{s}$ door opening causes approximately $0.94\text{kg}$ of ambient indoor air to infiltrate. Additionally, the time, equipment and associated costs for running the tests were compared, and it was concluded that the adapted Co-Heating methodology could substitute the condensate collection method for the evaluation of infiltration while providing additional results on the thermal performance.

在这项研究中，提出了一种适用的联合加热方法在封闭式冷藏展示柜（RDC）的热性能评估中的应用。已经开发了一个包含三个实验的新颖测试系列，并在带有四个门的商用RDC上进行了演示，以评估包壳的传热系数，热惯性，空载状态下的渗透和门操作引起的动态渗透。后两个实验与冷凝液收集方法并行进行，以验证渗透结果。两种方法之间的良好一致性（<10％）得出结论，被测RDC在闲置状态下的渗透约为$0.022\text{千克/秒}$ 那一个 $15\text{s}$ 门打开大约导致 $0.94\text{公斤}$的室内空气渗入。此外，还对运行测试的时间，设备和相关成本进行了比较，得出的结论是，适用的共加热方法可以替代冷凝水收集方法来评估渗透性，同时提供有关热性能的其他结果。