TH771 · Heat Pumps

Experimental Apparatus for the Study of Heat Pumps for Heating and Cooling

Anodised aluminium frame and painted steel panels
Main metal components in stainless steel
Front-panel diagram laying out the components as they are physically arranged
Hermetic compressor, power: 3/8 HP, computer controlled
Water-cooled condenser, capacity: 1580 W
Air-cooled condenser, computer controlled
High-pressure control
Storage vessel to prevent compressor malfunction, capacity: 0.5 l
Working-fluid filter
Expansion valve
Water-side evaporator, capacity: 1580 W
Air-side evaporator, computer controlled
Liquid separator to prevent liquid entering the compressor
- capacity: 0.73 l

Pressure gauges (4) located at the key points of the unit
Temperature sensors - type "J" (10 sensors): compressor outlet, condenser outlet / evaporator inlet, evaporator inlet / condenser outlet, compressor inlet, water inlet, water outlet from the condenser, water outlet from the evaporator, air inlet, air outlet from the condenser, air outlet from the evaporator
Cooling circuit flow sensor, measuring range: 5-60 l/h
Water circuit flow sensor (water-cooled condenser), range: 0.25-6.5 l/min
Water circuit flow sensor (evaporator), measuring range: 0.25-6.5 l/min
Compressor outlet pressure sensor, measuring range: 0-25 bar
Compressor inlet pressure sensor, measuring range: 0-10 bar
Instrument for measuring the electrical power drawn by the compressor
4-way valve (electrically actuated) for reversing the cycle
Valves (4) for directing the refrigerant through the condensers and evaporators
Refrigerant used: R513a
Representation of the cycle on the lg p-h diagram
Real-time acquisition and display of the measured data (via SCADA)
Dedicated software for controlling the unit
Remote operation and control for users
Remote control for technical support
Safe operation (ensured mechanically, electrically, electronically and in software)
Connects to a PC (included) with touchscreen and Windows operating system

Control interface with a process diagram on the front panel
The control elements of the unit are permanently computer controlled
Simultaneous on-screen display of every parameter involved in the process
All sensors involved in the process can be calibrated
Real-time plotting of the system response curves
Real-time computer control, with the flexibility to change parameters from the computer keyboard at any moment during the process

16 analogue inputs (single-ended) or 8 (differential) with 16 bit resolution
2 analogue outputs with 16 bit resolution
24 digital inputs/outputs

Includes all the cables and accessories needed for normal, safe operation of the experimental apparatus
Includes manuals covering: installation, start-up, safety, service, the interface and control software, and calibration

Water Supply