DESCRIPTION

Technical Description

In heating systems using different renewable heat sources, it may be economically feasible to cover the peak demand by means of a conventional heater. In order to be able to investigate this aspect in the HL 320 modular system, the HL 320.02 module provides an additional heater that can easily be integrated into different system configurations. 

The practicality of operating this heater in laboratory experiments is kept simple by using an electrically operated heating element. The heating element is inserted into the storage tank of the HL 320.05 storage module and can be controlled by the storage module's controller. An integrated meter records the amount of electricity consumed. The data from this meter can be sent to the controller of the HL 320.05 storage module via a suitable data cable, by means of the data logger.

Carefully structured instructional materials have been created for the recommended module combinations with the HL 320.02 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

- Complementary heating and/or domestic water heating by conventional additional heater
- Bivalence point and heating load
- Control strategies for complementary heating
- Energy balances in conventionally supported solar thermal and heat pump systems