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Products | Thermodynamics, Heating and Sanitary Systems | Heating and Ventilation | HL 720

HL 720

Ventilation System Trainer

Technical Description

Ventilation systems are often used in building services engineering to achieve the required air change rates in the individual rooms. The ventilation air can also be heated or cooled by heat exchangers. A ventilation system is a preliminary stage for an air conditioning system in which the air can also be humidified or dehumidified. The system is assembled from standard industrial components. The plexiglas windows and exposed ductwork ensure that normally hidden components can be seen: inspection covers and fire dampers, filters, heaters / coolers, louvre damper, etc. The original function is fully retained. The system emphasises ventilation rather
than air conditioning. Depending on the operating mode, heating or cooling, a supply of hot or cold water is required in the laboratory. The system requires a three-phase mains supply.
With the additional module HL 722, a room temperature control system can be realised with the ventilation system.

Learning Objectives / Experiments

· Familiarisation with a ventilation system and its layout
· Familiarisation with the components of a ventilation system
· Pressure measurements in the ventilation duct
· Measurement of fan motor current
· Function of typical components:
- Weather protection grille
- Louvre damper
- Filter
- Heater / cooler
- Fan
- Inspection cover
- Sound absorbing panel
- Ventilation grille with flow control
- Fire damper
- Ceiling air outlet

Features

Complete ventilation system on laboratory trolley
High level of relevance to practice due to use of commonly available commercial components

Available accessories

HL 722 -- Control Unit for Ventilation System

Alternative products

ET 611 -- Air Conditioning System with Climate Chamber
ET 620 -- Full-Scale Air Conditioning Trainer
HL 710 -- Ventilation Trainer

Specification

[1] Ventilation system on trolley on castors,
l x w x h 2100x880x2050mm, 180kg
[2] Climatic unit with filter, heat exchanger and fan
[3] All components from air conditioning, some arranged under plexiglas covers in the ventilation duct
[4] Duct with pressure measurement glands
[5] Pressure measurement with inclined tube manometer
[6] Current measurement using ammeter
{7] Cold and hot water connection necessary for operation of the system with cooler/heater
[8] 400V, 50Hz, 3 phase

Technical Data

Climatic unit:
- fan: max. airflow rate: 2500m³/h, speed: 1600rpm, drive motor: 750W
- air-to-water heat exchanger: capacity: 7.6kW
Components: weather protection grille, louvre damper, inspection cover, 2x sound absorbing panel, ventilation grille with flow control, fire damper, 2x ceiling air outlet
Measuring ranges:
- Pressure: 0...750Pa
- current: 0...6A

Dimensions and Weight

l x w x h : 2100 x 880 x 2050 mm
Weight : approx. 180 kg

Connections

400V, 50Hz, 3 phase
Hot and cold water supply

Scope of Delivery

1 system, 1 instruction manual

Order Details

065.72000 HL 720 Ventilation System Trainer