The modern and powerful software is an integral part of the training system in the form of hardware/software integration (HSI). It enables the comfortable execution and analysis of the experiments. The experimental unit is connected to the PC via a USB interface. The models are plugged onto the base unit and connected hydraulically with refrigerant hoses and electrically with cables. Self-sealing couplings reduce the refrigerant loss to a minimum. All components are arranged well visible to allow their operation to be monitored. The refrigerant mass flow rate is calculated in the software from the recorded measured values. The effect of parameter changes can be tracked in log p-h and h-x diagrams. The system is also operated via the software. Temperatures and pressures in the system are recorded by sensors and displayed dynamically in the software for system operation and data acquisition. The software consists of a software for system operation and for data acquisition and an educational software. Each model has its own software matching the learning objectives. With the aid of an authoring system, the teacher can create further exercises. With explanatory texts and illustrations the educational software significantly aids the understanding of the theoretical principles. 

Ltekonline are the manufacturers of HSI Training System Refrigeration and Air Conditioning used to demonstrate engineering principles in Engineering Colleges, Engineering Schools and Heat Transfer Lab Equipments for Engineering Teaching Lab in Universities