Note:

This calculator determines the required cooling water flowrate for a desuperheater using the given steam flowrate and enthalpy values. A desuperheater is used in steam systems to reduce the temperature of superheated steam by mixing it with cooling water, ensuring proper temperature control in industrial processes.

Explanation of Parameters:

• ṁs (kg/h) - Mass Flowrate of Superheated Steam: The total mass of superheated steam flowing per hour.
• hs (kJ/kg) - Enthalpy of Superheated Steam: The energy content per unit mass of steam before desuperheating.
• hd (kJ/kg) - Enthalpy at Desuperheated Condition: The energy per unit mass of steam after the desuperheating process.
• hcw (kJ/kg) - Enthalpy of Cooling Water: The energy per unit mass of cooling water before mixing with steam.

Where is this Calculation Used?

• Steam Power Plants: Used to regulate steam temperature before entering turbines to prevent damage and improve efficiency.
• Industrial Boilers: Helps in maintaining precise steam conditions for various process applications.
• HVAC & Cooling Systems: Enhances performance in cooling towers and heat exchangers by optimizing cooling water requirements.
• Petrochemical & Refinery Plants: Ensures safe and controlled steam temperatures in critical industrial operations.

Important Considerations:

• ✔ The cooling water flowrate must be carefully controlled to avoid excessive cooling, which may lead to condensation or inefficient steam utilization.
• ✔ The enthalpy values should be taken from accurate steam tables to ensure precise calculations.
• ✔ If the difference between hd and hcw is too small, a high amount of cooling water may be required.
• ✔ If hd = hcw, the calculation is invalid as division by zero occurs.

After entering the values, click Calculate Flowrate to determine the required cooling water flowrate (ṁcw) in kg/h.