DESCRIPTION

Technical Description

A complete domestic heating system can be set up using the trainer HL 353.02 together with a hot water generator, e.g. HL 353. Hot water passes through the radiators and heats the room air.

HL 353.02 contains two heating circuits. Both heating circuits are equipped with commercially available heating technology control devices. Each heating circuit contains a circulating pump.

The simple heating circuit with one subcircuit contains two flat radiators and is controlled by a temperature-led controller. A three-way mixing valve is the actuator. A simulator is supplied for varying the outside temperature.

The heating circuit with two subcircuits contains four radiators and two heating controllers. Solenoid valves enable control of the heat distribution in the two subcircuits.

The trainer is supplied with hot water from the supply unit HL 353 and is connected to the feed and return flow connectors using hoses with quick-release couplings. 

Measuring points for temperatures, pressures, differential pressures and flow rates are available. The heating circuit with two subcircuits contains two heat meters to enable energy calculations and evaluations.

The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.

Learning Objectives / Experiments

- design of a room heating system with controller and actuator
  * temperature-led heating controller (outside temperature) with three-way mixing valve
  * simulator for varying outside temperature
- function and design of a room heating system divided into sections
- hydronic balancing of heating circuits with multiple radiators
- function and design of commercially available heating technology components
- measurement of differential pressures, temperatures and flow rates
- energy calculation and evaluation of emitted heating capacity based on measured quantity of heat
- reading and comprehension of symbols and process schematics