Large heat transfer systems are peculiar in many respects. They are often a critical part of a larger production plant, holding hundreds to thousands of gallons/liters of heat transfer fluid. By virtue of their size, they also typically include an expansion tank and an inert-gas pad for oxidation protection. Precise temperature control and efficient heat transfer are non-negotiable in these plants. As such, maintaining a large heat transfer system and the heat transfer system that runs in it are top priorities for production and maintenance managers. We have compiled a list of top seven tips on this all-important subject matter. Here they are:
Tip #1 – Carry out periodic fluid testing and analysis. This provides deep insights on fluid health and on other system parameters. See our recommendations on the frequency of oil sampling and testing here.
Tip #2 – If test results indicate oxidation, thermal cracking, or contamination, implement the solutions that we outlined in our article titled, ‘Solutions to Heat Transfer Fluid Problems’.
Tip #3 – Keep an eye out for pump cavitation issues, pressure gauge fluctuations and boiler temperature gauge spikes. These can be telltale signals of problems related to water in the heat transfer system and system fouling issues. Solutions for water removal are presented here.
Tip #4 – Periodically check for system leaks. Monitor flow meters, sight glasses and level gauges.
Tip #5 – When it is eventually time for a fluid change, ensure that there is no cross-contamination between the used fluid and the virgin fluid. Drain the used fluid completely before charging in virgin fluid.
Tip #6 – Get ahead of sludge and carbon deposits by applying preventative and concentrate cleaners where applicable. Relatherm Heat Transfer Fluids offers some of the most effective system cleaners in the industry. Check them out here.
Tip #7 – Have a knowledgeable and experienced Heat Transfer Fluid expert on speed dial. Not your lubricant salesman, not his chemical sales counterpart. A dedicated Heat Transfer Fluid Expert is what you need for guidance on fluid recommendations and system-related advice. Feel free to contact Relatherm Heat Transfer Fluids anytime.