Comfort is of great importance in the air conditioning of rooms and buildings. The comfort depends on the temperature, the relative humidity and the flow velocity of the air. Unlike small systems that use conventional climate controllers, this experimental system is equipped with a modern building management system for control. This corresponds to the state of the art for large air-conditioning systems and is advantageous when presenting complex learning content.
ET 611 is a full air conditioning system with comprehensive test options. The effect of the air humidity and temperature on the comfort is examined. The system has a climatic chamber designed for test persons to be inside. This allows the trainee to study the effect of different system operating states on his own well-being. The components used, such as radial fan, electric air heater, steam humidifier and water chiller are all used in commercial air conditioning and ventilation technology. The active components can be run either manually individually or via a central PLC in automatic operation. The PLC controls the temperature and air humidity independent of each other.
Sensors record air humidity, temperature, power, flow rate, and flow velocity. The full air conditioning system consists of two independent system components: main unit and water chiller. The connection is performed via hoses.
The experimental plant is controlled by the PLC via touch screen. By means of an integrated router, the experimental plant can alternatively be operated and controlled via an end device. The user interface can also be displayed on additional end devices (screen mirroring). Via the PLC, the measured values can be stored internally. Access to stored measured values is possible from end devices via WLAN with integrated router/LAN connection to the customer’s own network. Via direct LAN connection the measured values the measured values can be transferred to a PC and stored there (e.g. via MS Excel).