ENME 454_Air Conditioning (I) Course
Assignment Title: Design and Analysis of a Refrigeration System
Instructor: _______Prof. Ali Fouda_____________
Group Members: ____________________
Submission Date: ______26/10/2025______________
Objective
The purpose of this assignment is to design and analyze a complete refrigeration system
based on specified cooling capacity and local climatic conditions. Students will apply
theoretical and practical knowledge to select suitable system types, working fluids, and
components that achieve the desired performance with high efficiency, safety, and
environmental compliance.
Assignment Tasks
1. System Design Basis
Define the required cooling capacity (in tons of refrigeration or kW). Specify the operating
and climatic conditions of the location. State all design assumptions clearly.
2. System Type Selection
Select an appropriate refrigeration system (Air-cooled, Vapor compression, or
Absorption). Justify your selection based on efficiency, suitability, and cost.
3. Cycle Configuration
Determine the number of stages (single, two-stage, or cascade) according to climatic and
operational requirements. Provide a schematic diagram of the proposed system.
4. Refrigerant Study
Compare at least three refrigerants in terms of performance, environmental impact, and
safety, and select and justify the most suitable refrigerant.
5. Thermodynamic Analysis
Perform full cycle analysis. Calculate cooling capacity, compressor power, COP, and EER.
6. Component Selection
Select a commercial unit and appropriate condenser and evaporator sizes. Include data
sheets.
7. Economic and Energy Analysis
Estimate initial and operating costs, cost per ton of refrigeration, and discuss feasibility.
8. Discussion and Conclusion
Summarize main results, limitations, and recommendations.
Deliverables
Each group must submit a comprehensive report that includes an introduction, system
design, thermodynamic analysis, calculations, component selection, economic analysis,
and conclusions. Include figures, tables, and charts where applicable.
Evaluation Criteria
Criterion
Weight (%)
System concept and justification
15
Refrigerant and cycle analysis
20
Calculations accuracy
20
Component selection and design
15
Economic and energy evaluation
15
Report quality and presentation
10
Creativity and innovation
5
Total
100