1. What is Figure of Merit for Liquefaction?

Definition: The figure of merit for liquefaction is a parameter for the comparison of different fluids in the same system.

Purpose: It helps evaluate the efficiency of liquefaction processes by comparing theoretical minimum work requirement to actual work requirement.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( FOM \) — Figure of merit for liquefaction (dimensionless)
• \( W_i \) — Theoretical minimum work requirement (Joules)
• \( W \) — Actual work requirement for the system (Joules)

Explanation: The ratio of theoretical minimum work to actual work gives a measure of how efficiently the system is performing the liquefaction process.

3. Importance of Figure of Merit Calculation

Details: A higher FOM indicates a more efficient liquefaction process. This calculation helps in system design and optimization.

4. Using the Calculator

Tips: Enter the theoretical minimum work requirement and actual work requirement in Joules. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What does a FOM of 1 mean?
A: A FOM of 1 means the system is performing at theoretical maximum efficiency (actual work equals theoretical minimum work).

Q2: What's a typical FOM value for liquefaction systems?
A: Typical values range from 0.2 to 0.6, with higher values indicating more efficient systems.

Q3: How can I improve my system's FOM?
A: Improving heat exchange efficiency, reducing friction losses, and optimizing cycle parameters can increase FOM.

Q4: Is FOM affected by the working fluid?
A: Yes, different fluids will have different theoretical minimum work requirements and thus different FOM values.

Q5: Can FOM be greater than 1?
A: No, since the theoretical minimum work is the absolute minimum required, FOM cannot exceed 1 in practice.