Home Blogs Fluid Properties – HVAC Calculator July 12, 2024 Calculate Fluid Properties Select Fluid: WaterGlycol (Ethylene)Glycol (Propylene)R-22R-134aR-410AR-407CR-404A Temperature (°C): Pressure (kPa): Calculate Properties Calculated Fluid Properties Previous Post
Home Blogs Mixed Air Properties – HVAC Conditions Calculator July 12, 2024 Calculate Mixed Air Properties Temperature (State 1) (°C): Relative Humidity (State 1) (%): Temperature (State 2) (°C): Relative Humidity (State 2) (%): Calculate Properties Calculated Mixed Air Properties Previous Post
Home Blogs Properties of Air – HVAC Conditions Calculator July 12, 2024 Calculate Air Properties Temperature (°C): Relative Humidity (%): Altitude (meters above sea level): Atmospheric Pressure (kPa): Calculate Properties Calculated Air Properties Previous Post
Home Blogs Refrigerant Line Sizing – Formulas and Calculations Calculator July 12, 2024 Introduction to Refrigerant Line Sizing Proper sizing of refrigerant lines is crucial for efficient operation of HVAC systems. It involves considerations such as refrigerant type, load calculations, and line diameter. Key Considerations Refrigerant Type and Pressure Drop Load Calculations (Cooling or Heating) Velocity and Flow Rate Requirements Pipe Material and Insulation Formulas and Calculations Pressure Drop Calculation: ΔP = f * (L / D) * (ρ * V^2 / 2) Where: ΔP: Pressure drop f: Friction factor L: Length of the pipe D: Diameter of the pipe ρ: Density of the refrigerant V: Velocity of the refrigerant Refrigerant Line Sizing: D = √( (4 * Q * ρ * V) / (π * ΔP) ) Where: D: Diameter of the refrigerant line Q: Flow rate of refrigerant ρ: Density of the refrigerant V: Desired velocity of the refrigerant ΔP: Maximum allowable pressure drop Example Calculations Example 1: Refrigerant Line Sizing Given: Refrigerant: R-410A Flow Rate: Q = 0.5 kg/s Density: ρ = 5 kg/m3 Desired Velocity: V = 5 m/s Maximum Pressure Drop: ΔP = 100 kPa D = √( (4 * Q * ρ * V) / (π * ΔP) ) D = √( (4 * 0.5 * 5 * 5) / (π * 100) ) D ≈ 0.399 m Therefore, the recommended diameter of the refrigerant line is approximately 0.399 meters. Previous PostNext Post
Home Blogs Fan Law Calculator – HVAC Calculator July 12, 2024 Calculate Adjusted Fan Properties Initial Value: Initial Condition: Flow Rate (CFM)Pressure (inches WC) Adjusted Condition: Flow Rate (CFM)Pressure (inches WC) Select Fan Law: 1st Fan Law4th Fan Law Calculate Adjusted Properties Calculated Adjusted Fan Properties Previous PostNext Post
