Closed Loop Systems Treated With Glycol A variety of heat transfer fluids are used to provide freeze protection for industrial equipment and HVAC closed-loop heating and cooling systems. These fluids may be used in systems that operate anywhere between -60°F to 300°F. Many heat transfer fluids are glycol-based, containing either ethylene glycol or propylene glycol. […]
There are multiple factors which can contribute to corrosion within a closed loop system. For this blog we will concentrate on erosion corrosion. This is caused by particulate in the system sand blasting the piping, causing leaks typically in elbows and threaded sections of the piping. This can also be damaging to small areas of […]
HEATING BOILER STARTUP CHECKLIST: Have a competent service representative disassemble the low-water cutoff and makeup water feeding devices. All parts should be thoroughly cleaned and reconditioned as required, then tested before the boiler is put into regular service. Burner equipment should be cleaned and adjusted to give maximum efficiency. This can save fuel dollars. The […]
This is that in-between time of year when facilities managers are preparing both heating boilers and cooling towers for winter operation. Here are two checklists that will assist in getting these systems ready for cold weather operation and help avoid unexpected equipment failure. WINTERIZATION TIPS FOR COOLING TOWERS: Fall is an excellent time to prepare […]
1 – Cooling Tower Cleaning First and foremost, for a seasonal tower, ensure you have completed both Cooling Tower Cleanings/Disinfections required by the Department of Health’s (DOH) calendar year (November 1stthrough October 31st). One should have been completed at start-up, and the 2nd can be completed anytime before shutdown. You do NOT need to wait until shutdown to […]
You may be asking yourself “I have a water treatment plan in place, why do I need to clean my Tower?” There are multiple reasons to perform annual, or semi-annual tower cleanings. The first being it is mandated by law in some states to maintain compliance. New York State has made an annual physical tower […]
From the water treatment industry’s perspective, the practice of controlling the proliferation of microbial fouling in HVAC/Industrial cooling water systems has traditionally been focused on keeping algae, slime and fungus in check. Without proper control, organisms will colonize, grow, and turn into biomass and biofilm. Displaced biomass can lead to restrictions in flow, loss of […]
Here we see the results of a cooling tower left without any water treatment for one year. Solid sediment had built up so thick that it completely covered the hatch opening!!! The tower had become incredibly inefficient, and corrosion had begun to take place throughout the structure. As you may know, the main function of […]
Controlling the scale-forming tendencies of a cooling tower system is based on regulating the level to which minerals are “allowed” to concentrate through evaporation. Cycles management is one aspect of preventing mineral scale formation on heat exchange surfaces and is carefully coupled to other methods such as: proportionally-dosed application of chemical deposit-control agents, pH control, […]
Having problem with your water softener? Metro can assist your facility in walking you thru a few simple troubleshooting steps. The most common water softener problem is a poor brine draw. Poor brine draw is typically caused either by a leaking brine draw tube, (flexible tube leading from brine tank to softener head) or a […]
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