1. What is Heat Rejection Factor?

Heat Rejection Factor is the load on the condenser per unit of refrigeration capacity. It represents the ratio of total heat rejected by the condenser to the refrigeration capacity of the system.

2. How Does the Calculator Work?

The calculator uses the Heat Rejection Factor formula:

Where:

• \( HRF \) — Heat Rejection Factor
• \( RE \) — Refrigeration Capacity (J/s)
• \( W \) — Compressor Work Done (J/s)

Explanation: The formula calculates the ratio of total heat rejected (refrigeration capacity plus compressor work) to the refrigeration capacity, indicating the condenser load per unit of cooling capacity.

3. Importance of Heat Rejection Factor

Details: The Heat Rejection Factor is crucial for designing and sizing condensers in refrigeration systems. It helps determine the heat rejection requirements and ensures proper system performance and efficiency.

4. Using the Calculator

Tips: Enter refrigeration capacity and compressor work done in joules per second (J/s). Both values must be positive, with refrigeration capacity greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical range for Heat Rejection Factor?
A: Typically ranges from 1.1 to 1.3 for most refrigeration systems, depending on system efficiency and operating conditions.

Q2: How does compressor efficiency affect HRF?
A: Higher compressor efficiency (lower work input for same cooling) results in a lower HRF value, indicating better system performance.

Q3: Can HRF be less than 1?
A: No, HRF is always greater than or equal to 1 since it represents (RE + W)/RE where both RE and W are positive values.

Q4: How is HRF used in condenser design?
A: HRF helps determine the required condenser capacity to handle the total heat rejection from the refrigeration system.

Q5: Does ambient temperature affect HRF?
A: While HRF is primarily calculated from system parameters, ambient temperature can indirectly affect compressor work and thus influence the HRF value.