Reversible water / water or air / water heat pump

The machine is mounted on a frame equipped with casters for easy movement.

A space work plan is available.

The machine is equipped with a touch screen for viewing information and performing commands.

The refrigeration circuit is '' split '' allowing perfect visibility and access to all system components.

Composition of the bench:

·   A frame supporting the elements of the bench is made of welded 304L stainless steel tube. It is mounted on casters, two of which have brakes.

• The refrigeration circuit is in welded copper tube and assembled by fittings, with drain, filling and isolation valves. The refrigeration circuit is insulated.
• A hermetic piston compressor, 279W at-10 ° C, 3A
• A high pressure R134a pressure and temperature graduated manometer and / or a pressure sensor for the acquisition option.
• A low pressure R134a pressure and temperature graduated manometer and / or a pressure sensor for the acquisition option.
• One (air / water version) or Two (water / water version) R134a / water exchangers: with stainless steel coil of about 0.2m², thick borosilicate glass shell.
• One (air / water version) or Two (water / water version) R134a / air exchanger with 5W fan, 650 m ³ / h. The fan is variable speed.
• An electrically controlled 4-way cycle reversal valve
• A set of solenoid valve for cycle reversal and 2 non-return valves
• A steel liquid reservoir bottle
• A filter drier
• A fluid status indicator
• Two adjustable thermostatic expansion valves
• A steel anti-blow bottle
• An HP and LP safety pressure switch
• A float flowmeter for water, with flow adjustment valve. With electronic transmitter for the acquisition option
• 12 PT1000 class A temperature probes:
  • 9 on the refrigerant circuit
  • 2 on the water circuit
  • 1 on the air circuit

• Cooling water tank made of PE, with cover. Volume: 60 liters. Equipped with a stainless steel submersible pump (4.8 m ³ / h, 6 mCE, 250W), and a drain valve in the lower part.

 

• A control box comprising:
  • A set of fuses
  • A differential circuit breaker
  • On / off button
  • Emergency stop button
  • General disconnect switch
  • 9.7 '' color touchscreen allowing you to:

1. View:
   • Measurements of temperature sensors (12),
   • The electrical power consumed by the compressor
   • This information is visible instantaneously and on a curve as a function of time.
   • The synoptic of the machine
2. Order
   • Starting the compressor
   • Switching on the air / refrigerant exchanger fan (according to air / water or water / water, air / air)
   • Starting up the water pump
   • The cycle reversal
3. Save the data and restore them in a .csv format usable on any spreadsheet. The data should be loaded onto a USB stick.

Ooption 1: measurement of the refrigerant flow rate (recommended for complete studies of the performance of the refrigeration cycle), including a refrigerant flowmeter.

Option 2: Data acquisition
o The measurements of the HP and BP sensors
o The flow of refrigerant and water (requires having taken option 1 for the flow of refrigerant)

Option 3: a portable device for measuring the speed and temperature of the air using a hot wire air sensor: measurable air speed 0.15 to 30 m / sec; air temperature: 0 ° C -50 ° C.
Supplied with a tube that fits on the exchanger to calculate the air flow from the measured speed. This option is not available for the water / water version.