Refrigerant Charge Calculator

How to Use the Calculator

1. Enter the system volume in liters.
2. Select the refrigerant type from the dropdown menu.
3. Input the operating pressure in PSI.
4. Enter the ambient temperature in °C.
5. Click the "Calculate" button to determine the required refrigerant charge.
6. The calculator will display the refrigerant charge in kilograms, along with the density factor and adjustment factor.

Understanding the Formula

The calculator uses the following formula to determine the refrigerant charge:

Q = V × P × (1 - 0.025 × T)

Where:

• Q = Refrigerant Charge (kg)
• V = System Volume (liters)
• P = Operating Pressure (PSI)
• T = Ambient Temperature (°C)

Refrigerant Types

The calculator supports the following common refrigerant types:

• R-134a - Commonly used in automotive air conditioning systems
• R-410A - Commonly used in residential and light commercial air conditioning systems
• R-22 - Historically used in residential and commercial air conditioning systems, being phased out due to environmental concerns
• R-404A - Commonly used in commercial refrigeration systems
• R-717 (Ammonia) - Used in industrial refrigeration systems due to its high efficiency

Important Notes

Remember that the actual refrigerant charge may vary based on specific system design and operating conditions. This calculator provides an estimate based on standard parameters.

The density factor varies by refrigerant type, and the adjustment factor accounts for ambient temperature effects on refrigerant properties.