is part of the HSI training system for refrigeration and air conditioning technology. In combination with the base unit the operational model of a simple air conditioning system is created. The model is plugged onto the base unit, secured using fasteners and connected with refrigerant hoses to become a complete refrigeration circuit for the air cooler.
In systems for room cooling the air to be cooled is aspirated from the room by a fan, cooled and fed back into the room. This model demonstrates the principles of room cooling and the components of an air conditioning system.
The model includes an air duct with transparent front, fan for air transport, an evaporator as air cooler and an expansion valve. All components are clearly arranged on a panel.
The individual components of the system, here the compressor and the fan, are operated via the software. The software offers the option to simulate faults.
The volumetric air flow rate is determined via a differential pressure measurement. Temperatures and humidity before and after the evaporator are recorded by sensors, digitised and dynamically represented in the software.
Fundamentals and individual components are represented in the educational software for . Performance assessments check the learning progress. With the aid of the authoring system further exercises and performance assessments can be created.
Technical details
Specification
model of a simple air conditioning system to plug onto the base unit SR 915
training system with HSI technology
air duct with transparent front
evaporator as air cooler
radial fan with throttle valve
thermostatic expansion valve as expansion element
sensors to record temperature, humidity and differential pressure for determining the volumetric air flow rate
Evaporator as air cooler
transfer area: approx. 900cm2
Radial fan
max. power consumption: 80W
max. flow rate: 255m3/h
Measuring ranges
temperature: 2x ±50°C, 2x 0…100°C
differential pressure: 0…10mbar
humidity: 2x 10…100% rel.

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