Technical data

Electric compression heat pump

Article no: P2360202

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

Principle

Pressures and temperatures in the circulation of the heat electrical compression heat pump are measured as a function of time when it is operated as a water-water heat pump. The energy taken up and released is calculated from the heating and cooling of the two water baths. When it is operated as an air-water heat pump, the coefficient of performance at different vaporiser temperatures is determined.

Benefits

Different operating modes possible
For both demonstration and student experiments
Simple set-up

Tasks

Water heat pump: To measure pressure and temperature in the circuit and in the water reservoirs on the condenser side and the vaporiser side alternately. To calculate energy taken up and released, also the volume concentration in the circuit and the volumetric efficiency of the compressor.
Air-water heat pump: To measure vaporiser temperature and water bath temperature on the condenser side under different operating conditions on the vaporiser side,

with stream of cold air,
with stream of hot air,
without blower.

If a power meter is available, the electric power consumed by the compressor can be determined with it and the coefficient of performance calculated.

Learning objectives

Refrigerator
Compressor
Restrictor valve
Cycle
Vaporization
Condensation
Vapour pressure
Vaporisation enthalpy

Scope of delivery

Heat pump, compressor principle	04373-93	1
Temperature meter digital, 4-2	13618-00	1
Temperature sensor: Universal -50 ... +300 °C Type-K	EAK-TF-55	2
Heat conductive paste, 60 g	03747-00	1
Digital stopwatch, 24 h, 1/100 s and 1 s	24025-00	1
Beakers, Boro, low form, various sizes	46057-00	2
Glass rod,boro 3.3,l=300mm, d=7mm	40485-05	2
Power meter digital	07049-01	1
Lab jack, 150 x 150 mm	02074-02	2