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Absorption Refrigeration System

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Absorption Refrigeration System Specification

Temperature Range
5 C to 35 C Celsius (oC)

Model No

Core Components
Evaporator, Absorber, Heat Exchanger, Condenser

Material
Mild steel

Frequency
50 Hz Hertz (HZ)

Usage
Laboratory

Power Source
Electric

Warranty
1 year

Feature
Highly Efficient

Product Type
ABSORPTION REFRIGERATION SYSTEM

Measurement Range
Fully Adjustable

Capacity
5 TR T/hr

Automation Grade
Manual

Accuracy
100 % %

Voltage
220 V Volt (v)

Equipment Materials
Mild Steel Body, Glass Tubing

Type
Absorption Refrigeration System

Display Type
Digital

Dimension (L*W*H)
1020 x 760 x 1680 mm Millimeter (mm)

Weight
160 kg Kilograms (kg)

About Absorption Refrigeration System

ABSORPTION REFRIGERATION SYSTEM

Absorption refrigeration systems operate using thermal energy. They use the principle of liquids evaporating already at low temperatures when pressure is reduced. This basic principle is demonstrated in the experimental unit with the example of an ammonia-water solution with the ammonia acting as refrigerant.

In the evaporator the liquid ammonia evaporates and withdraws heat from the environment. To keep the evaporation pressure low, the ammonia steam in the absorber is absorbed by the water. In the next step, ammonia is permanently removed from the high concentration ammonia solution to prevent the absorption process from being halted. For this purpose, the high concentration ammonia solution is heated in a generator until the ammonia evaporates again. In the final step, the ammonia steam is cooled in the condenser to the base level, condenses and is returned to the evaporator. The low concentration ammonia solution flows back to the absorber. To maintain the pressure differences in the system, hydrogen is used as an auxiliary gas.

In process technology systems the resulting waste heat can be used for cooling. In small mobile systems, such as a camping refrigerator or minibar in a hotel, the required heat is generated electrically or by gas burner. Another benefit of absorption refrigeration systems is their silent operation. demonstrates the functional principle of an absorption refrigeration system with its main components: evaporator, absorber, boiler as generator with bubble pump, condenser. The boiler can alternatively be operated with gas or electrically. Another electric heater at the evaporator generates the cooling load.

Temperatures in the refrigeration circuit and the heating power at the boiler and at the evaporator are recorded and displayed digitally. The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.

The unit shall perform the following experiments and investigations:

Learning Objectives / Experiments

Demonstrate the basic principle of an absorption
Refrigeration system
Absorption refrigeration system and its main
Components
Operating behaviour under load

Specification

Operation of an absorption refrigeration system
Main system components: evaporator, absorber, boiler with bubble pump, condenser
Ammonia-water solution as working medium, hydrogen as auxiliary gas
Boiler to separate ammonia
Bubble pump for transportation in the circuit
Adjustable electrical heater at the evaporator serves as cooling load
Boiler is alternatively heated by electrical heater or gas burner
Piezoelectric igniter for gas operation
Digital displays for temperature and power

Technical Data

Working medium: ammonia-water solution
Auxiliary gas: hydrogen
Electric heater: 125W
Gas burner, adjustable: propane gas
Evaporator heater, adjustable: 50W

Measuring ranges

Temperature: 4x -80...180°C
Power: 0...150W

Dimensions and Weight

LxWxH: 750x450x750mm
Weight: approx. 47kg

Advanced Absorption Cycle Technology

The ARS-100 utilizes the proven ammonia-water absorption refrigeration cycle. This technology not only offers high energy efficiency but also reduces ongoing operational costs. The integral pump ensures consistent water circulation, supporting stable temperature control. Its high accuracy and digital monitoring deliver precise results, making it suitable for both research and teaching applications.

Designed for Safety and Durability

With safety features like overload protection and a pressure relief mechanism, the ARS-100 ensures secure operation even under demanding laboratory conditions. The device is constructed from durable materials, including mild steel and glass tubing, and features a corrosion-resistant powder-coated finish, guaranteeing long-term reliability.

User-friendly and Low Maintenance

This absorption refrigeration system is engineered for ease of installation and daily use. The floor-mounted configuration with standard laboratory connections allows seamless integration. Its low-maintenance design means minimal downtime for cleaning or servicing, ensuring laboratories can focus on experimentation and learning.

FAQs of Absorption Refrigeration System:

Q: How does the ammonia-water absorption refrigeration system operate?

A: The ARS-100 operates using an ammonia-water absorption cycle, where ammonia acts as the refrigerant and water as the absorbent. Heat input drives the separation of ammonia vapor, which is then condensed and evaporated to provide cooling. The integrated water circulation pump ensures efficient thermal exchange throughout the system.

Q: What safety features are included in the ARS-100?

A: The ARS-100 is equipped with essential safety mechanisms such as overload protection and a pressure relief valve. These systems safeguard against excessive pressure build-up and electrical faults, promoting secure and reliable operation in laboratory settings.

Q: When is the best time to perform maintenance on the ARS-100?

A: Routine checks and minor maintenance can be performed at intervals specified in the user manual. As the ARS-100 is designed for low maintenance, regular visual inspection for leaks or wear is usually sufficient. Its recommended to schedule maintenance during periods of laboratory downtime to avoid disrupting demonstrations or research.

Q: Where can the ARS-100 absorption refrigeration system be installed?

A: The ARS-100 is designed for floor-mounted installation in laboratories. It is suitable for educational institutions, research centers, and training facilities that feature standard laboratory fittings and meet the specified ambient temperature and voltage requirements.

Q: What are the primary benefits of using the ARS-100 in a laboratory setting?

A: Key benefits include its high energy efficiency, low operational costs, robust safety features, and ease of use. Additionally, its precise digital display and fully adjustable measurement range ensure accurate results, making it ideal for both teaching and advanced research applications.

Q: How is temperature monitored and controlled in this system?

A: Temperature is monitored through a digital display, allowing users to precisely track and adjust cooling between 5C to 35C to suit experimental requirements. The systems high accuracy ensures reliable and repeatable measurements during operation.

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