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Circulation Ratio Formula:
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The Circulation Ratio is a key parameter in boiler systems that represents the ratio of feed water mass flow to steam generated mass flow. It indicates how many times the water circulates through the boiler system before being converted to steam.
The calculator uses the Circulation Ratio formula:
Where:
Explanation: The circulation ratio provides insight into boiler efficiency and water circulation patterns within the system.
Details: Proper circulation ratio ensures adequate cooling of boiler tubes, prevents overheating, maintains efficient heat transfer, and reduces the risk of scale formation and corrosion.
Tips: Enter feed water flow rate and steam generated flow rate in kg/h. Both values must be positive numbers greater than zero for accurate calculation.
Q1: What is the typical range for circulation ratio in boilers?
A: Circulation ratios typically range from 3:1 to 20:1 depending on boiler type, design, and operating conditions.
Q2: Why is circulation ratio important in boiler operation?
A: It ensures proper heat transfer, prevents tube burnout, maintains water quality, and optimizes boiler efficiency.
Q3: How does circulation ratio affect boiler performance?
A: Higher circulation ratios generally provide better cooling and safety margins but may increase pumping costs. Lower ratios can lead to overheating and reduced efficiency.
Q4: What factors influence circulation ratio?
A: Boiler design, operating pressure, heat input rate, water quality, and circulation pump characteristics all affect the circulation ratio.
Q5: When should circulation ratio be monitored?
A: Circulation ratio should be monitored during boiler commissioning, routine operation, and whenever changes are made to boiler load or operating conditions.