Dehumidification is a real problem for all building owners and resurfacing companies in business today.  In modern buildings, the amount of fresh air that needs to be introduced to maintain proper indoor air quality seems to be constantly increasing with the passage of new IAQ standards almost annually.  The calculations vary from air changes per hour based upon total square footage to variations in building use and occupant density.

Selecting the right equipment for such an application is difficult if not impossible.  Each product is designed to solve a specific problem with little or no adjustment in operating range before it becomes too costly to operate or to inefficient to correct the changing condition.  Referring to an article that appeared in the August, 2002 issue of ASHRAE, “Dehumidification Equipment Advances” by Lewis G. Harriman III and James Judge P.E., they discuss the most common systems available today and the applications.  In all cases, the design point for each machine is specific with no single product being able to address the seasonal changes in outdoor makeup air condition.  The most efficient and universal machine is a two-stage mechanical and desiccant dehumidifier, offering the highest level of efficiency and operating range.  The drawback on this equipment, however, is the leaving air temperature from this equipment is neither constant nor controllable.  DEC International produces a totally mechanical dehumidifier that will constantly remove moisture from the air down to 20% RH, but at the same time rejecting 100% of the latent and sensible heat removed from the air stream back into the air stream and surrounding space.

Now there is an alternative that can produce the very low RH conditions of the DEC machines as well as operate with varying inlet air temperature, and produce a constant supply air temperature.  The Diamond Dehumidification dehumidifier is a 100% mechanical dehumidifier utilizing low temperature refrigeration technology to achieve ultra-low humidity control.  This new process allows for the removal of both sensible and latent heat from the air stream and the re-introduction of a small amount of sensible heat to prevent overcooling the air stream.  The supply air temperature and relative humidity are constantly monitored to achieve a steady supply of air to the space being conditioned.  The multistage multi-temperature dehumidification and conditioning process of the air allows for very low relative humidity (>RH 35%) at a constant supply temperature (75 °F).  The refrigeration system will reject as little as or as much sensible heat to the supply air stream to maintain a comfortable working environment, whether you are performing office tasks or heavy mechanical work.  The excess sensible and latent heat is rejected through a conventional mechanical condensing system that can be remotely located or integrated into the air-handling unit.  The Diamond process uses maximum sub-cooled refrigerants to produce an extremely efficient evaporation cycle allowing for greatly improved kw/hr per pound of water removal operating performance.  This recently patent requested process will revolutionize the way you do dehumidification while greatly reducing your operating costs.