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Teaching System Heat Pump with Solar Heat and Photovoltaics
Order-№: 85394  
Price on request
 

Decisive for the quality of the training given is that practical exercises are possible and that measurements with real equipment can be performed. It is only by literally "grasping" and "touching" that the technical processes will be understood, and hence can be managed as well. That which cannot be directly observed and sensed, has to be perceived by suitable experimental measurements.

Pedagogic requirements

  • Maximum learning efficiency from closely linking theory and the practical side of the subject with hands-on learning processes
  • The contents of learning must be made "graspable" in both meanings of the word
  • To avoid any waste of time in the learning organisation, all learning processes have to provided at the place of learning in a qualified and optimised manner, and the system technology must be designed for practical applications such that these processes can be realised in a mutually complementing way
  • This calls for "integrated specialist classrooms" where both theory and the practical side of the area of technology concerned can be mediated
  • The efficiency in conveying the knowledge and findings is part of the balanced concept which includes written information and exercises organised using modern media techniques, PC workplaces, experimental, laboratory and demonstration equipment to practice on
  • All learning processes are designed in the context of "complete action" with the problem assignment (job, information), conditional analysis (analysis of the knowledge relevant to the organisation, planning), project realisation (execution, realisation, test record) and transfer (documentation, assuring the results, testing)

The system consists of six mobile training stands

Training stand 1: Geothermal energy source or floor heating

This training stand can be used as a source of heat in the configuration "Brine heat pump" (training stand 5) or as the heat sink in combination with the heat pump or the solar heat stand (training stands 3 and 4).

Operation with or without filling with water is possible here!

  • 200-litre water tank
  • 3 pipe systems (10, 20 and 30 metres in length)
  • Integrated hot-medium meters to measure the overall flow, the hot and the cold outputs as well as the admission and return temperatures
  • Bypass valve between the heating circuits for the experiments to bypass the three pipe systems
  • Experiments on "hydraulic adjustment" with the three pipe systems routed in parallel using the volumetric flowmeters and throttle valves

Training stand 2: Fan convector as source or sink

Both the source of energy and the energy sink with discharge of warm air can be realised with the fan convector in these experiments.

  • Fan power in the air throughput up to 2300 m/h
  • Heating power up to 22.4 kW at 90/70/20C
  • Adjustable cooling performance from 3 to 5.4 kW at 7/12/27C
  • Continuous throttle action in the hydraulic circuit by turning valves on the convector
  • Series of experiments to optimise the energy between the heating power available from the heating circuit and the energy conveyed from the convector to the air in the room
  • Integrated hot-medium meter

Training stand 3: Solar collector with solar simulation

The main components of this training stand are the flat plate collector, the solar heat regulator and the circulation pump

  • Clear glass collector with copper absorber (collector area 0.93 m, liquid content 0.9 litre, flow from left or right, standstill temperature to about 185 C)
  • System regulator with diverse regulating functions and energy measuring / sensing for the functional value using an erasable memory device for the data
  • High-efficiency pump (minimum power input 5.8 W and maximum delivery height 5 m) as the wet running meter with EC motor, and with automatic adjustment of the power
  • 6 x 500 W halogen spotlights for simulation of the irradiated solar power
  • Safety devices with diaphragm expansion vessel and 6-bar pressure control valve
  • 2 ball valves, with integrated thermometer and gravity braking system in the collector circuit
  • Flowmeter and "FlowCheck" for controlling the flow (5 to 40 L/min)
  • Fittings for filling and flushing

Training stand 4: Hydraulic switch, plate heat exchanger and buffer storage

This training stand is used for adaptation to the hydraulic conditions. The uses for the hydraulic switch, the plate heat exchanger or the heat exchanger integrated in the storage system are diverse.

  • Hydraulic switch and plate heat exchanger are interchangeable using an exchangeable disc (the component not being used is fastened to the rear of the stand)
  • Hydraulic switch: Stainless steel vessel (volume approx. 1 litre) Primary circuit and secondary circuit are at the same pressure but are not hydraulically coupled
  • Plate heat exchanger: 16 exchange plates, exchanger performance 17 kW at 70/50C primary and 35/45C secondary
  • Enamel reservoir for holding 160 litres of water, with integrated straight-tube heat exchanger

Training stand 5: Heat pump

This training stand constitutes the central element of the teaching system. Besides the heat pump, the stand contains all the power supply points for the other training stands. With the brine and heating circuit connection, the circulation pumps and the safety devices are already installed for the professional operation of a heat pump.

  • Conventional heat pump with evaporator, scroll compressor, liquefier and expansion valve in line with state-ofthe-art technology.
  • Permanently fitted cold circuit (not accessible for experimental interventions), refrigerant R407c.
  • Manometer for sensing and measuring physical events in the cold circuit.
  • Digital thermometers for measuring the temperatures in the cold circuit downstream of the evaporator, air compressor, liquefier and expansion valve.
  • Low and high-pressure control devices, energy measuring device, highefficiency circulation pumps and other components.
  • Power supply, measuring and switching unit with RCT, main fuses, energy measuring device, control-circuit fuse and contactor relay.

Training stand 6: hybrid collector

This training stand adds a further key technology - photovoltaics - to the teaching system. This also allows a solid fundamental knowledge of hybrid collectors to be accumulated and built upon. Thus, heat pump system concepts can be developed and tested using photovoltaics and hybrid collectors. The process of system integration as a solution with many benefits is therefore convincingly practical.

Learning objectives

  • To understand the function of a hybrid collector on the basis of experiments and measured values
  • To plan heat pump systems with hybrid collectors as an energy source for the heat pump
  • To understand the effect of the temperature profile on the thermal collector and PV module
  • To record and analyse measured values
  • To plan and execute an emergency power system for a circulation pump with regulator
  • Sensible use of PV electricity in off-grid systems or in the emergency power system
  • Experimental derivation
  • To understand the physical process of a hybrid collector in thermal energy extraction through the brine circuit of a heat pump
  • To understand the process of water extraction through condensation at the hybrid collector

  • Understand the technical system requirements for heatpump heater systems and solar-heat equipment.
  • Knowledge of the electrical, hydraulic and control requirements needed for operation, using a heat-pump heater system or solar-heat equipment as an example.
  • Knowledge of the physical processes in the cold circuit of a heat pump.
  • Systematic approach to commissioning a heat-pump heater system or solar-heat equipment.
  • Capability to plan, set up and commission heat-pump and solar-heat heater systems in a concerted manner.
  • Capability to prepare test records for heat-pump heater systems and solar-heat equipment.
  • Skills in recording measurements and evaluating the results from electrical and hydraulic processes using a heat-pump and solar-heat systems as examples.
  • Understanding the processes to optimise the energy in heater systems using heat pumps and solar heat.
  • Knowledge of the terms and operating resources used for heat-pump and solar-heat systems.
  • Capability to judge the electrical and hydraulic values measured in heat-pump heater systems and to plan any thereby related process changes.
  • Understanding of the technical controls and optimisation of the energy in the circulation pumps used in heater systems.
  • Skills for optimising energy processes in heater systems.

S1 geothermal energy source or floor heating:

  • Set dimensions
    (W/D/H in mm) approx. 1.000 x 800 x 1.980
  • Weight approx. 80 kg

S2 fan convector as the source of sink:

  • Set dimensions
    (W/D/H in mm) approx. 900 x 800 x 1.980
  • Weight approx. 70 kg
  • Power supply 230 V

S3 solar collector with solar simulation:

  • Set dimensions
    (W/D/H in mm) approx. 2.150 x 800 x 1.980
  • Weight approx. 130 kg
  • Power supply 230 V

S4 coupling component hydraulic switch, plate heat exchanger and buffer storage:

  • Set dimensions
    (W/D/H in mm) approx. 1.100 x 800 x 1.980
  • Weight approx. 80 kg

S5 heat pump:

  • Set dimension
    (W/D/H in mm) approx. 1.200 x 800 x 1.980
  • Weight approx. 120 kg
  • Power supply 230 V

S6 hybrid collector with PV components:

  • Set dimensions
    (W/D/H in mm 1.450 x 800 x 1.980
  • Weight approx. 100 kg
  • Power supply 230 V

 

Transport - dimensions:

S1 geothermal energy source or floor heating:

Set dimensions
(W/D/H in mm) approx. 1.150 x 900 x 2.220
Weight approx. 110 kg

S2 fan convector as the source of sink:

Set dimensions
(W/D/H in mm) approx. 1.050 x 900 x 2.220
Weight approx. 100 kg

S3 solar collector with solar simulation:

Set dimensions
(W/D/H in mm) approx. 2.300 x 900 x 2.200
Weight approx. 180 kg

S4 coupling component hydraulic switch, plate heat exchanger and buffer storage:

Set dimensions
(W/D/H in mm) approx. 1.250 x 900 x 2.200
Weight approx. 110 kg

S5 heat pump:

Set dimension
(W/D/H in mm) approx. 1.350 x 900 x 2.200
Weight approx. 155 kg

S6 hybrid collector with PV components:

Set dimensions
(W/D/H in mm 1.600 x 900 x 2.200
Weight approx. 140 kg