High-efficiency Tubes For Humidification

High-efficiency Tubes For Humidification


High-efficiency tube benefits are staggering: Significant energy savings, sizable reduction in downstream heat gain, and substantial reduction in dispersion-generated condensate.
Steam releases heat as it condenses
Ultra-sorb and Rapid-sorb dispersion assemblies typically disperse steam into 50-55° F airstreams. This cool air flowing across uninsulated hot dispersion tubes causes some steam inside the tubes to condense. Steam gives up heat as it condenses. This heat passes easily through uninsulated stainless steel dispersion tubes into the air stream, increasing downstream air temperature. The amount of condensate produced is directly proportional to downstream air heat gain.
Advanced insulation meets stringent requirements
The obvious solution to the problem of unwanted heat gain and resource waste is insulated dispersion tubes. DRI-STEEM co-developed Polyvinylidene fluoride (PVDF) insulation for humidification applications. PVDF is a rugged insulation perfectly suited for insulating dispersion tubes. PVDF insulation is an advanced material commonly used in chemical, semiconductor, medical, defence, and aerospace industries.

  • PDVF-insulated tubes reduce air stream heat gain and condensate production by up to 85% when compared to uninsulated tubes - regardless of load or air stream temperature.
  • Condensate reduction correlates directly to energy savings. Every pound of condensate that does not drain from the dispersion assembly saves about 1,000 Btus - the amount of energy required to boil a pound of water into steam (in a non pressurised vessel at sea level).
  • Condensate reduction allows using smaller steam generators. With a higher percentage of generated steam meeting the humidification load rather than draining from the dispersion assembly as condensate, steam generators can be downsized in many cases.
  • Adding PVDF insulation to dispersion tubes causes no excessive airflow pressure drop - the dense, closed-cell insulation provides exceptionally high performance at 1/8" thickness.
  • Energy savings provides product payback in less than one year for electric humidification systems, and in about 1½ years for natural gas systems.

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