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HL 320.08

- experiment module for the HL 320 "Solar Thermal Energy and Heat Pump" modular system
- use as a heat source or heat sink
- axial fan with two speed settings


Technical Description

Experiment module consisting of a fan convector with piping, quick-release couplings and temperature sensors. The experiment module may be used both to heat rooms and to absorb ambient heat from the outside air. It can thus be operated as either a heat sink or a heat source for a heat pump.

In the case of heating rooms, compared to traditional heating radiators, fan heaters offer the possibility of achieving a comparatively good transfer of heat to the room air, even at small dimensions. This advantage makes it possible to operate room heating with lower temperatures in the heating circuit. When combined with a heat pump, the fan heater therefore often represents a beneficial application both economically and in terms of energy, especially when renovating heating systems in old buildings.

When absorbing ambient heat to supply heat to a heat pump, air heat exchangers are often used when there is no access or difficulty accessing other heat sources such as groundwater or geothermal heat collectors. The disadvantage of the energy balance, particularly unfavourable in winter, in this case is contrasted with the advantage of lower initial investment costs.

Carefully structured instructional materials have been created for the recommended module combinations with the HL 320.08 module. As part of the documentation for the overall HL 320 system, these materials set out the basic principles and provide a step-by-step guide through the experiments.

Learning Objectives / Experiments

- Use of a fan convector for heating and cooling rooms
- How the temperature difference between the heating feed and return affects the overall efficiency of a heating system 
- Operating conditions when used as an air heat exchanger in a heat pump system
- Comparison of an air heat exchanger with other heat sources in a heat pump system



[1] fan convector for connection to the  HL 320 modular system
[2] axial fan with two selectable speed settings 
[3] control by means of other controllers in the HL 320 system (CAN bus)
[4] temperature sensors for feed and return
[5] quick-release couplings with shut-off valves for connecting the pipes

Technical Data

- speed: 900/1400min-1
- flow rate: 683/1155m3h-1

Heat exchanger
- nominal cooling capacity: 2kW
- max. operating pressure: 10bar

Dimensions and Weight
LxWxH: 1500x800x1500mm
Weight: approx. 95kg Required for Operation 230V, 50/60Hz, 1 phase 

Scope of Delivery
1 trainer
1 instruction manual for experiments with HL 320 modules

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