G.U.N.T. - Equipment for engineering education -

Home

Products

Company

Theory of Machines and Properties of Materials

Mechatronics

Thermodynamics, Heating and Sanitary Systems

>	Fundamentals of Thermodynamics
>	Applied Thermodynamics
>	Power Engines and Machines
>	Internal Combustion Engines
>	Refrigeration and Air Conditioning
>	Heating and Ventilation
>	Sanitary Systems

Fluid Mechanics and Hydrology

Process Control and Process Engineering

Overviews

Products | Thermodynamics, Heating and Sanitary Systems | Refrigeration and Air Conditioning | ET 482

ET 482

Gas Heated Absorption Refrigeration Unit

Technical Description

Unlike mechanically driven compression refrigeration systems, absorption systems use thermal energy directly. There are three circuits in the system: a water circuit, an ammonia circuit and a hydrogen circuit. The system comprises a generator, a condenser, an evaporator with a downstream gas heat exchanger, an absorber and a liquid heat exchanger. The generator is heated with gas not electricity. The unit can therefore be operated independent of the mains electricity.
A supply of propane gas is necessary for operation.

Learning Objectives / Experiments

· Principle of operation of an absorption refrigeration
system with gas heater
· Familiarisation with the individual components in
such a unit
· Demonstration of the refrigeration process
· Temperature measurement at relevant points in the
system

Features

Simple demonstration model of an absorption refrigeration unit
Gas heater as heat source

Alternative products

ET 101 -- Basic Heat Pump Demonstrator
ET 415 -- Basic Refrigeration System
ET 480 -- Electrically Heated Absorption Refrigeration Unit

Specification

[1] Demonstration model of an absorption refrigeration unit
[2] Ammonia/water mixture as working medium, hydrogen as auxiliary gas
[3] Gas heater as heat source
[5] Temperature measurements using bimetallic dial thermometers
[6] Control panel with piezoelectric igniter and gas regulating valve
[7] Insulated vapour bubble pump / heater
[8] Operation with propane
[9] l x w x h: 750x400x600mm, 40kg

Technical Data

Absorption unit 527x180x482mm
Charge: ammonia / water mixture
Auxiliary gas: hydrogen
Heat source: propane
Fuel consumption: 18g/h

Piezoelectric igniter

Thermometers
1x -20...40°C
2x 60...60°C
1x 0..200°C

Dimensions and Weight

l x w x h: 750 x 400 x 600 mm
Weight : approx. 40 kg

Connections

Propane 30...50mbar

Scope of Delivery

1 refrigeration system, complete,
1 instruction manual

Order Details

061.48200 ET 482 Gas Heated Absorption Refrigeration Unit