Domestic Water heating with flat collector Trainer.
6.1    Technical Description of the Trainer
The Domestic Water heating with flat collector Trainer must include the following descriptions or functions:
•    used to demonstrate the principal aspects of solar thermal domestic water heating in a system with components used in real world applications
•    Trainer with real-world components
•    Pivot table flat collector
•    System with heat exchanger and two separate circuits
•    Suitable for sunlight and artificial light
•    Familiarization with the functions of the flat collector and the solar circuit
•    Determining the net power
•    Relationship between flow and net power
•    Determining the collector efficiency
•    Relationship between temperature difference (collector/environment) and collector efficiency

6.2    Technical Specification of Trainer
The Domestic Water heating with flat collector trainer must include the following technical specifications:
•    Trainer for investigating the function and operating behavior of a flat collector
•    Solar thermal flat collector with selectively absorbing coating
•    Adjustable collector tilt angle
•    Solar circulation station with pump, expansion tank and safety valve
•    Hot water circuit with buffer tank, pump and plate heat exchanger
•    Solar regulator with three temperature sensors
•    Four bimetallic thermometers
•    Operation with solar radiation or with Artificial Light Source
•    Technical Data:
o    Solar circuit
    Collector absorbing surface: 2,3m²
    rated throughput: 20...90L/h
    operating pressure: 1...3bar
o    safety valve 4bar
o    Hot water circuit
    plate heat exchanger: 3kW, 10 plates
    buffer tank 80L
o    Measuring ranges
    flow: 20...150L/h
    temperature: 4x 0...120°C
o    Dimensions and Weight
    LxWxH: 1660x800x2300mm
    Weight: approx. 240kg
o    Required for Operation
    230V, 50Hz, 1 phase or 120V, 50Hz, 1 phase
o    Scope of Delivery
    1 trainer
    1 set of instructional material

6.3    Figurative description of the Trainer System
An equivalent resemblance of the Domestic Water heating with flat collector trainer is indicated in Figure 6.

Figure 6: Equivalent figurative description of the Domestic Water heating with flat collector trainer