A well-designed high-temperature heat transfer fluid essentially has three key product characteristics-high thermal stability, high heat transfer efficiency and high purity. Heat transfer fluids that operate at high temperatures for a long time will undergo thermal degradation, and the by-products of thermal degradation may damage the Stainless Steel Submersible Pump and cause its failure. The rate of thermal degradation is affected by temperature and exposure to oxygen, but also by impurities in the fluid that catalyze the decomposition of the fluid.
Under the same operating conditions, the degradation rate of unbranded liquids is 1.7 to 2.4 times faster than that of higher purity branded liquids, and unbranded liquids will require more recharge and sampling every year. Therefore, choosing a fluid, but for the life of the fluid, when an unbranded fluid is chosen will be more advantageous based on cost, which will result in higher overall operating costs.
Not surprisingly, a high-purity fluid is more expensive per kilogram than an equivalent lower-purity fluid. When filling a new system, the initial cost of low-purity fluid seems attractive, especially when it is a large system with a large volume. However, during the entire life of the fluid, the main effect of impurities may accelerate the rate of thermal degradation, so the cost of maintaining a low purity fluid will be higher. The knock-on effect of pumps and systems is caused by by-products of thermal degradation (such as carbon). Carbon will accumulate on the surface of internal pipes. Long-term use will result in the need to replace fluids, but there may also be expensive equipment. Therefore, when Submersible Pump Factory considers the use of new fluids, it should also consider its purity and the additional long-term and long-term costs that may be caused by long-term use at high temperatures.
