Air Conditioning System Model

Product Description

AIR CONDITIONING SYSTEM MODEL

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 .06 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 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.The unit shall perform the following experiments and investigations:

Learning Objectives / Experiments

• Air conditioning system and its components
• Conditioning room air
• Mixing different air flows
• Representation in the h-x diagram for humid air
• Humidification and dehumidification
• Heating and cooling
• Representation of the circuit in the log p-h diagram
• Effect of a cooling load (dry and wet)
• Recirculating and outer air operation
• In conjunction with optional accessories
• Automation in an air conditioning system

Specification

• Model of an air conditioning system with outer air and recirculating operation
• Air duct with transparent front
• Air duct with fan, air cooler, humidifier, flaps, air heater and sensors
• Chamber with wet (latent) and dry (sensitive) heat source as cooling load
• Motorised flaps for recirculating and outer air operation
• Process schematic with signal lamps
• Air conditioning system ready for different automation solutions: 4 data cable connections to integrate the accessories
• Refrigerant R134a, CFC-free

Technical Data

• Air-cooled condensing unit
• Power consumption: 140W at -10°C
• Refrigeration capacity: 320W at +5/40°C
• Humidifier
• Heating power: 400W
• Air heater
• Heating power: 360W
• 2 heaters in the chamber as cooling load
• Power output: 0...250W each, freely adjustable
• Flow cross-section of the air duct
• WxH: 155x155mm

Measuring ranges

• Temperature: 0...50°C
• Humidity: 10...90% r.h.
• Power: 0...600W (power consumption of the
• Compressor in the condensing unit); 2x 0...300W
• (cooling loads)
• Pressure (refrigerant): -1...9bar / -1...24bar
• Flow rate (refrigerant): 1,5...23,5L/h
• Air velocity: 0...2,5m/s

Dimensions and Weight

• LxWxH: 2010x760x1910mm
• Weight: approx. 309kg