Hot Tip #15 – Condensate Return Lines

All condensate lines should be pitched down 1/4″ per 10 feet (5 mm/m) to allow for drainage of the condensate by gravity. The most efficient return systems are, by design, not completely full of liquid and are not vented to the atmosphere. They are referred to as dry-closed systems. They handle condensate at steam temperature […]

Hot Tip #14 – Pipe Sizing Factors

When determining pipe size for steam systems, the following factors should be considered. Initial steam pressure: the output pressure at the boiler or the main for branch piping. Allowable pressure drop: the total pressure drop allowed from the source to the end of the line. This includes all drops from line loss, elbows, valves, etc. […]

Hot Tip #13 – Steam Traps

“Drain each drip point with a separate trap.” This rule for trapping should never be broken under any circumstances. Short-circuiting occurs when the condensate outlets from two heat exchange units are connected. Short-circuiting is likely whenever the drip points of two heat exchangers are drained with one trap, even if the two units appear to […]

Hot Tip #12 – Mud Legs

Dirt pockets, (mud legs) provide a low-flow area where dirt and scale can settle out of the steam and condensate stream. Dirt pockets must be cleaned out periodically and, therefore, should be part of a regularly scheduled maintenance program. Some traps are more susceptible to dirt than others. Strainers should be installed before any trap […]

Hot Tip #11 – Steam Trap Installation

Unions provide a simple means for removing traps from a system for repair or replacement. If one union is used, locate it downstream from the trap. A trap can be removed between the union and the next connection point upstream (shutoff valve, strainer, or drip leg). If two unions are used, place them either at […]

Hot Tip #10 – Steam Trap Repair

Every year, hundreds of millions of dollars worth of steam is wasted in the U.S. Much of this loss is at the expense of companies that have made a huge investment in energy management – only to fail to establish a program to maintain steam trap efficiency. For $40.00, (less than the cost of one […]

Hot Tip #9 – Latent heat of evaporation

One pound of water at 32 degrees F. plus 180 BTU’s = One pound of water at 212 degrees F.  One pound of water at 212 degrees F. plus 971 BTU’s = One pound of steam at 212 degrees F. and at 0 PSIG.                                                                                                                                                                             One pound of steam at 212 degrees F. and at 0 […]

Hot Tip #8 – The Triboelectric Effect

Are you having ironing problems due to the triboelectric effect, also known as triboelectric charging? This is a type of contact electrification in which certain materials become electrically charged after they come into contact with another different material and are then separated, such as through rubbing. The polarity and strength of the charges produced differ […]

Hot Tip #7 – Thermo Oil

My question is would switching to all ironers on thermal oil be more efficient than steam? What are the pros and cons of Oil Vs Steam? Oil Pros: Oil can be heated to higher temperatures. (>400 F), steam at 150 PSIG = 366 F. Oil will be at a lower pressure, Typically 30 to 40 […]

Hot Tip #6 – Iron Removal

Do you have a problem with iron in your water softeners? Here is a simple three-step solution: Dissolve two pounds of salt and four pounds of Ferosol 1-300 in three gallons of water for each cubic foot of resin in the softener. Pump solution into Brine well just before regeneration. After regeneration with this solution, […]