Description

AL-E1167 REFRIGERATION, HEATING & AIR CONDITIONING (HVAC) EXPERIMENTAL PLANT

Product Overview

The AL-E1167 Refrigeration, Heating and Air Conditioning (HVAC) Experimental Plant is a compact bench-top training system designed for practical study and demonstration of refrigeration, heating, cooling, freezing and air-conditioning principles.

The system incorporates fan evaporators, dedicated cooling and freezing stages, a coaxial heat exchanger, refrigerant and glycol-water flow measurement, and comprehensive temperature and pressure instrumentation. The clearly visible process components enable students to understand refrigeration-cycle operation, heat transfer and system performance through practical experimentation.

Key Training Areas

• Fundamentals of refrigeration and cooling cycles
• Cooling-stage operation
• Freezing-stage operation
• Heat transfer through a coaxial heat exchanger
• Temperature measurement
• Refrigeration pressure measurement
• Refrigerant flow measurement
• Glycol-water mixture flow measurement
• Heating and cooling performance evaluation
• Comparison of cooling and freezing stages
• Practical HVAC system operation and analysis

Technical Specifications

Fan Evaporator – Cooling Stage

The cooling section shall incorporate a fan evaporator with:

• Heat-transfer surface area: 1.21 m²
• Airflow rate: 80 m³/h
• Cooling capacity: 140 W
• Reference condition: tL1 = 5°C, ΔT1 = 10 K

This section enables students to investigate the operation and performance of a refrigeration cooling stage.

Fan Evaporator – Freezing Stage

The freezing section shall incorporate a larger fan evaporator with:

• Heat-transfer surface area: 3.62 m²
• Airflow rate: 125 m³/h
• Freezing capacity: 330 W
• Reference condition: tL1 = 5°C, ΔT1 = 10 K

The separate cooling and freezing stages allow comparative study of refrigeration performance under different operating conditions.

Coaxial Heat Exchanger

The experimental plant shall include a coaxial heat exchanger for practical heat-transfer studies.

Measurement & Instrumentation

Temperature

• 11 temperature measurement channels
• Measuring range: −50 to +150°C

Pressure

Pressure measurement shall include:

• 2 channels: −1 to 15 bar
• 1 channel: −1 to 24 bar

Refrigerant Flow

• Measuring range: 4–40 l/h
• Quantity: 1 flow measurement channel

Glycol-Water Flow

• Measuring range: 2.5–65 g/s
• Quantity: 1 flow measurement channel

Electrical Power

• Measurement range: 0–1150 W

Features & Benefits

1. Compact bench-top construction suitable for teaching and training laboratories.
2. Clearly visible refrigeration and HVAC components.
3. Dedicated cooling and freezing sections for comparative experiments.
4. Integrated coaxial heat exchanger for heat-transfer studies.
5. Temperature and pressure measurement at multiple process points.
6. Refrigerant flow measurement.
7. Glycol-water mixture flow measurement.
8. Electrical power monitoring.
9. Suitable for practical HVAC system-performance evaluation.
10. Appropriate for engineering education, vocational training and technical laboratory applications.

Suggested Experiments

The AL-E1167 can be used for practical experiments such as:

1. Study of basic refrigeration-cycle operation.
2. Study of the cooling stage.
3. Study of the freezing stage.
4. Comparison of cooling and freezing performance.
5. Determination of cooling capacity.
6. Determination of freezing capacity.
7. Study of heat transfer through a coaxial heat exchanger.
8. Measurement of refrigerant flow rate.
9. Measurement of glycol-water flow rate.
10. Measurement of refrigeration-system pressures.
11. Measurement of temperature at different process points.
12. Study of the effect of airflow on evaporator performance.
13. Electrical power measurement of the experimental plant.
14. Analysis of HVAC system operating parameters.
15. Comparative evaluation of refrigeration and heat-transfer performance

Technical Details