Item No.: 83855

Teaching System Heat Pump

with Solar Thermal Energy
Training Stands S1, S2, S3, S4, S5

The teaching system Heat Pump with Solar Thermal Energy provides the best possible technical qualification in the field of solar thermal energy and heat pump technology with electrotechnical and hydraulic expertise.

The training stands work with original industrial components and thus guarantee the practical and clear communication of all relevant learning contents for the training as a system mechanic SHK as well as for the company training. The test instructions included in the scope of delivery provide the contents for an interesting lesson design.

With the training stand S6, the teaching system can be expanded to include photovoltaic technology to form a teaching system for heat pumps with solar thermal and photovoltaic technology.

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 teaching system heat pump with solar thermal energy consists of five mobile training stands, which can be combined in different ways depending on the teaching objective:

  • Training stand S1: Geothermal Heat Source or Underfloor 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 S2: Fan Coil 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 90/70/20?C
  • Adjustable cooling performance from 3 to 5.4 kW at 7/12/27?C
  • 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 S3: Solar Thermal Energy 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 S4: Coupling Component 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 70/50?C primary and 35/45?C secondary
  • Enamel reservoir for holding 160 litres of water, with integrated straight-tube heat exchanger
  • Training stand S5: 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.
Learning Objectives
  • Understanding of system technical conditions of heat pump heating systems and solar thermal systems.
  • Knowledge of electrical, hydraulic and control engineering operating conditions using the example of a heat pump heating system or a solar thermal system.
  • Knowledge of the physical processes in the cooling circuit of a heat pump.
  • Systematic action for commissioning a heat pump heating system or a solar thermal system.
  • Abilities for action-oriented planning, installation and commissioning of heat pump and solar thermal heating systems.
  • Ability to prepare test reports on heat pump heating systems and solar thermal systems.
  • Ability to measure and evaluate electrical and hydraulic processes using heat pump and solar thermal systems as examples.
  • Understanding of energy optimisation processes in heating systems with heat pumps and solar thermal systems.
  • Knowledge of the terms and operating resources of heat pump and solar thermal systems.
  • Ability to assess electrical and hydraulic measured values in heat pump heating systems and to plan process changes based on these values.
  • Understanding of the control and energy optimisation of circulating pumps in heating systems.
  • Competence for the optimisation of energetic processes in heating systems.
Suitable for
  • Initial training / apprenticeships:
    • Plant mechanic Sanitation
    • Electrical engineer for energy and building services engineering (formerly: electrician)
  • Continuing education:
    For further training measures in renewable energies and SHK for the fields of heat pumps and solar thermal energy, e.g. for further training qualifications:
    • Solar technician
    • Specialist for solar technology
    • Solar thermal specialist
    • Heat pump specialist
    • Solar consultant
    • etc.
  • For company and inter-company training centres
  • Universities
  • Operational research and development
  • Scientific research and development
Scope of Delivery
  • Five mobile training stands: S1, S2, S3, S4, S5
  • Magnetic designation boards for the most important components Magnetic boards with the designations of the most important components of the respective stand and self-adhesive carrier plates are supplied with each training stand. The correct assignment of the designation boards to the components is part of the didactic concept.
  • Accessories Hoses for filling (1/2" thread) and emptying (3/4" thread) the system as well as all necessary connecting elements and connections for carrying out all the experiments described in the experiment instructions
  • Detailed experiment instructions:
    • Theoretical part (basics, description of the teaching system)
    • Test descriptions (structure of the tests)
    • Task sheets
    • Solutions
    • Extract Table of contents
    • Reading sample Description Training stand S1
    • Reading sample Experimental procedure and measuring tasks
    • Reading sample Measuring tasks Solutions
Technical Data
  • Training Stand S1: Geothermal Heat Ssource or Underfloor Heating
    • Dimensions (W x D x H in mm): approx. 1,000 x 800 x 1,980
    • Weight: approx. 80 kg
  • Training Stand S2: Fan Coil as Source or Sink
    • Dimensions (W x D x H in mm): approx. 900 x 800 x 1,980
    • Weight: approx. 70 kg
  • Training Stand S3: Solar Thermal Energy with Solar Simulation
    • Dimensions (W x D x H in mm): approx. 2,150 x 800 x 1,980
    • Weight: approx. 130 kg
  • Training Stand S4: Coupling Component Hydraulic Switch, Plate Heat Exchanger and Buffer Storage
    • Dimensions (W x D x H in mm): approx. 1,100 x 800 x 1,980
    • Weight: approx. 80 kg
  • Training Stand S5: Heat Pump
    • Dimensions (W x D x H in mm): approx. 1,200 x 800 x 1,980
    • Weight: approx. 120 kg