This module has been specifically designed for educational aims and it concerns the study of different engineering solutions used at present in heating systems for civil applications: underfloor heating or heating with radiators, with outdoor reset control of water delivery temperature; heating with radiators and zone valves; fan-coil heating with fan speed control. A control unit enables the autonomous operation (via local joystick) or remote operation (by optional PC via USB connection cable) of the system.
TRAINING PROGRAM
• Procedures for water filling and air bleeding from the system
• Data acquisition via PC (values of water/air temperature, flow rate, pressure in different points of the circuit)
• Calculating the heat emission curve of a heating element
• Studying the operation of a mixing valve and determining its characteristic and authority with respect to the controlled circuit
• Studying the operation of an outdoor reset controller
• Studying the operation of a proportional controller
• Modality for calculating the used thermal energy
TECHNICAL SPECIFICATIONS
• Steel structure mounted on wheels, painted and treated in the oven
• Color schematic diagram
• Heating system including:
– 50-liter electric boiler, expansion vessel, automatic bleed valves, automatic filling unit, safety valve, distribution manifolds;
– mixed system with three-way motor-driven valve, calibration valve, circulation pump, radiator and underfloor system, with proportional control of delivery temperature versus outdoor temperature (simulated by PC)
– distributed system with circulation pump, radiator with zone valve and fan coil with proportional control of fan speed versus room temperature
• Control unit with the following characteristics:
– autonomous operation and remote-controlled operation (via optional PC)
– USB interface for connection with PC
– LCD display for displaying the analog outputs, the faults, the input signals: temperatures, pressures, flow rates
– electronic board and converters for input/output signals
– multi-function interface board that transforms the module or PC into an industrial apparatus controlling and processing the analog inputs and analog/digital outputs such as the state of solenoid valve, the state of pumps, etc…
– fault insertion
– keyboard
• 6 Pt100 probes for detecting temperature
• 2 flow sensors
• 3 pressure sensors
• Thermomagnetic – earth leakage control button
• Emergency button
• Power supply: 230 Vac 50 Hz single-phase – 1500 VA (Other voltage and frequency on request)
