In this study, the effects of malfunctions and problems occurring in the system components of air handling units, which are the main elements of the air conditioning system, on the energy consumption were investigated. Investigations were carried out in 10 air handling units located in 5 different shopping centers of Turkey. The malfunctions and problems that may occur in operation of air handling units were determined and the problems causing the decrease in the efficiency prescribed by the design characteristics were determined. For this purpose, rod-type anemometer measuring the airflow in the air handling unit ducts, propeller-type anemometer, and thermal camera were used to measure air tightness and heat losses in the body structure. Also, the tension control of the belt of the fan motors, which is one of the main components of the energy consumption unit, and the pollution control of the air filter have also been carried out. The flow rate of water circulating in air handling units was determined, and losses were detected by energy and exergy analyses with thermodynamic parameters for summer and winter periods. As a result of the calculations, it was determined that the energy efficiency of the air handling units in the cooling period was 63.7% and the exergy efficiency was 59.6%. The energy loss is 471 kW and the exergy loss is 27 kW in the cooling period. The energy loss is 957 kW and the exergy loss is 127 kW in the heating period. The energy efficiency and the exergy efficiency during the heating period was calculated to be 75% and 41.7%, respectively.

中文翻译：

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空气处理机组中的故障对能量和运动效率的影响

在这项研究中，研究了作为空调系统主要部件的空调机组的系统组件中出现的故障和问题对能耗的影响。对位于土耳其5个不同购物中心的10个空气处理机组进行了调查。确定了空气处理单元运行中可能发生的故障和问题，并确定了导致设计特征所规定的效率降低的问题。为此，使用杆型风速计测量空气处理单元管道中的气流，螺旋桨型风速计和热像仪来测量车身结构中的气密性和热损失。另外，风扇马达皮带的张力控制 作为能源消耗单元的主要组成部分之一，空气滤清器的污染也得到了控制。确定了空气处理单元中循环水的流量，并通过能量和火用分析以及夏季和冬季的热力学参数来检测损失。计算的结果是，确定在冷却期间的空气处理单元的能量效率为63.7％，并且（火用）效率为59.6％。在冷却期间，能量损失为471 kW，火用损失为27 kW。在加热期间，能量损失为957 kW，火用损失为127 kW。加热期间的能量效率和火用效率分别计算为75％和41.7％。空气滤清器的污染也得到了控制。确定了空气处理单元中循环水的流量，并通过能量和火用分析以及夏季和冬季的热力学参数来检测损失。计算的结果是，确定在冷却期间的空气处理单元的能量效率为63.7％，并且（火用）效率为59.6％。在冷却期间，能量损失为471 kW，火用损失为27 kW。在加热期间，能量损失为957 kW，火用损失为127 kW。加热期间的能量效率和火用效率分别计算为75％和41.7％。空气滤清器的污染也得到了控制。确定了空气处理单元中循环水的流量，并通过能量和火用分析以及夏季和冬季的热力学参数来检测损失。计算的结果是，确定在冷却期间的空气处理单元的能量效率为63.7％，并且（火用）效率为59.6％。在冷却期间，能量损失为471 kW，火用损失为27 kW。在加热期间，能量损失为957 kW，火用损失为127 kW。计算出加热期间的能量效率和火用效率分别为75％和41.7％。通过能量和火用分析以及夏季和冬季的热力学参数来检测损失。计算的结果是，确定在冷却期间的空气处理单元的能量效率为63.7％，并且（火用）效率为59.6％。在冷却期间，能量损失为471 kW，火用损失为27 kW。在加热期间，能量损失为957 kW，火用损失为127 kW。计算出加热期间的能量效率和火用效率分别为75％和41.7％。通过能量和火用分析以及夏季和冬季的热力学参数来检测损失。计算的结果是，冷却期间的空气处理单元的能量效率为63.7％，火用效率为59.6％。在冷却期间，能量损失为471 kW，火用损失为27 kW。在加热期间，能量损失为957 kW，火用损失为127 kW。计算出加热期间的能量效率和火用效率分别为75％和41.7％。在冷却期间，能量损失为471 kW，火用损失为27 kW。在加热期间，能量损失为957 kW，火用损失为127 kW。加热期间的能量效率和火用效率分别计算为75％和41.7％。在冷却期间，能量损失为471 kW，火用损失为27 kW。在加热期间，能量损失为957 kW，火用损失为127 kW。加热期间的能量效率和火用效率分别计算为75％和41.7％。