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Heat Pump D
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Heat Pump D

  
£2,864.85 exc. 20% VAT(£3,437.82 Inc. VAT)

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  • Demonstration model for heat pumps
  • Clear layout of the process
  • Mounted on baseboard for easy display
  • Can be used as air-water or water-water pump
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Heat Pump D

The Heat Pump D is a demonstration model for showing how refrigerators and electrical compression heat pumps work. Consisting of compressor with drive motor, vaporizer, expansion valve, and condenser, it may be used as an air-water or water-water heat pump. Includes wattmeter - for recording the operation time, the mains voltage, instantaneous power input, electrical work - and two thermometers for measuring the temperatures in the two reservoirs.

The components are connected in a closed system by copper pipes and mounted on a base board, and the clear layout makes it possible to directly relate the sequence of changes of state to the cyclic operation of the heat pump. The evaporator and condenser are constructed as copper tubing spirals and each of them is submerged in water filled containers serving as heat reservoirs for determining the heat absorbed or emitted. Two large manometers display the pressure ratios of the coolant in both heat exchangers. Two observation windows are provided for observing the state of aggregation of the refrigerant after the evaporator and after the condenser. A protective overpressure switch disconnects the compressor motor from the circuit when overpressure reaches 15 bars.

Advantages

  • Very clear demonstration model with a compact and easily understood design
  • The layout of the components matches the sequence of a heat cycle
  • Inspection windows for observing how the refrigerant changes state

Experiment Topics

  • Determining the power output as a function of the temperature difference
  • Analysing the cyclic process by means of a Mollier diagram

Specifications

  • Compressor power: 120W
  • Coolant: R 134A, free of chloro-fluorohydrocarbons
  • Temperature reservoirs: 2000ml each
  • Manometer: 160mm diameter
  • Dimensions: 560 × 300 × 630mm³
  • Weight: 21kg
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