This educational simulator is designed for the training in the field of computer-aided control of industrial systems: it simulates the operation of a set of power distribution systems for heating residential buildings. In detail it includes:
• a central heating system with radiators and water delivery temperature outdoor reset
• an underfloor heating system with proportional controller
• a fan-coil heating system with outdoor reset control
• a zone heating system with radiators for two rooms.
It also includes an industrial digital multi-controller that automatically decides the actions to be carried out according to the set parameters, thus enabling to check the system behaviour and to assess the values of the involved parameters, after the reference variables set points have been fixed. When connected with a PC (supplied on demand), the simulator allows the supervision of the system by using a dynamic graphics.
TRAINING PROGRAM
Theoretical topics
• Studying the emission curve of a heating element, the characteristic curve of a three-way mixing valve and the
emission of a heating element versus the position of the valve shutter
• Open-loop and closed-loop control
• Studying the performance of a fan coil
Practical topics
• Analyzing the operation of an outdoor reset controller
• Analyzing the operation of a controller for radiant systems with limit function
• Analyzing the operation of a controller for zone heating system with continuously controlled 2-way valve
• Analyzing the operation of a room thermostat
• Testing ON/OFF and PI control logics
TECHNICAL SPECIFICATIONS
• Painted metallic framework
• Insulating material front panel reproducing the dissipation systems
• 5 potentiometers with 2-mm holes for simulating the analog inputs
• 3 bargraph LEDs with 2-mm holes for simulating the analog outputs
• 6 switches for simulating the digital inputs
• 4 LEDs for simulating the digital outputs
• Web access controller, with remote LCD display, including:
– 10 universal inputs,
– 8 digital inputs,
– 4 analog outputs,
– 4 configurable outputs,
– 7 digital outputs
– PC connection via net cable
– Controller access via Web browser
• Power supply: 230 Vac 50 Hz single-phase – 220 VA (Other voltage and frequency on request)
