Thermic fluid and its impact on thermal fluid heater performance
Thermic fluid heaters play an important role in process plants that require reliable indirect heating at high temperatures. Thermal heaters are used in industries where precise control and consistent heat is important, such as food processing, pharmaceuticals, chemicals, petroleum, textiles, oil & gas, etc.
At the centre of this equipment is thermic fluid, the heat transfer medium that effects not only the efficiency but also the longevity and reliability of the entire thermic fluid system.
What Is Thermic Fluid?
Thermic fluid, also known as thermal oil or heat transfer fluid, is a heating medium used to transfer heat to various processes or heating elements. A reliable thermic fluid:
1. Withstands high operating temperatures
2. Remains stable and non corrosive
3. Provides efficient heat transfer
Common types of thermic fluids include:
Synthetic fluids: These offer high thermal stability and a longer operational life.
Mineral-based fluids: While more cost-effective, they typically require more frequent replacement.
Why Thermic Fluid Matters
The quality of thermic fluid directly influences the thermal heater’s performance, reliability and safety. High-quality thermal fluids transfer heat more effectively, optimising energy consumption. Poor quality fluids have reduced thermal conductivity, leading to energy inefficiencies, longer heating cycles, and increased fuel usage.
Thermic Fluid Quality Impacts Thermal Fluid Heater Performance
1. Efficient Heat Transfer
The thermal fluid’s specific heat and thermal conductivity affects the heat transfer rates. A degraded or contaminated fluids reduce heat transfer, causing longer heating cycles and higher fuel consumption.
2. Increased Equipment Life:
The reliability of a thermic fluid heater depends largely on how well the thermic fluid is maintained. Clean, high-quality fluids extend the lifespan of the system and ensure reliable, uninterrupted operations, which is crucial for industries that rely on continuous heating systems.
3. Reduced Operating Costs
Clean, high-quality thermic fluid improve the overall lifespan of the heating system, ensuring reliable and uninterrupted operations. Poor-quality or contaminated thermic fluid effects the efficiency of the thermic fluid heater.
4. Viscosity of Thermic Fluid
Thermic fluids that become too viscous (especially at low temperatures) are difficult to circulate, increasing pump loads and reducing flow rates. This can cause heater overheating or uneven heating.
5. System Downtime
Degraded thermic fluid can lead to carbon fouling, scaling, and blockages in the heater or pipelines. This reduces heat transfer efficiency and can cause unplanned shutdowns or maintenance.
Signs of Thermic Fluid Degradation
It’s important to be aware of the indicators of thermic fluid degradation:
• Unusual or burnt odours
• Increased heater outlet temperature with a reduction in process heat
• Sludge formation or discoloration of the fluid
• A drop in overall system performance or rising fuel bills
How to Maximise Thermic Fluid Performance
To ensure optimal performance and longevity of thermal oil, maintain the following:
1. Thermic oil Fluid Selection: Choose a thermic fluid suitable for your operating temperature range, application requirements and the manufacturer’s recommendations.
A key difference between thermic fluids is their rate of degradation under normal operating conditions and the nature of the degradation products formed.
2. Maintain Temperature Range: Each thermic fluid has a specific temperature range within which it operates optimally. Operators should be trained to avoid overheating or operating the system beyond the recommended temperature range.
Exceeding this range can lead to fluid degradation, coking, and the formation of sludge or carbon deposits. These issues hinder heater performance and can also cause significant system damage.
3. Regular Testing: Monitor the fluid’s condition periodically by implementing a sample testing system. Regularly testing thermic fluid parameters can help you detect early signs of degradation.
This also helps identify and address the root causes of any fluid deterioration, whether due to equipment failure, human error, or other issues.
4. Scheduled Fluid Replacement: Even with regular maintenance, thermic fluid will eventually degrade due to high temperatures and repeated cycles. Replace or replenish the thermic fluid as per operating hours or test results.
5. System Flushing: Flush and clean the system before introducing fresh fluid to avoid contamination and degradation.
High quality thermic fluid that is well maintained is the key to efficient, reliable thermic fluid heater performance. By choosing the right fluid and maintaining it well, industries can ensure maximum performance, lower fuel usage, and longer system life, leading to significant long-term savings.
At Maxima, we understand the importance of fluid quality, which is why our thermic fluid heaters are designed to work seamlessly with top-grade fluids, optimizing performance and energy efficiency.
Looking to service or upgrade your thermal oil heating system? Explore our range of thermal oil heaters, designed to keep your system running safely and efficiently.