Dehumidification in hvac systems applications engineering manual

 · Desiccant dehumidification systems often are used where the dehumidification requirement is greater than the cooling requirement. One type, the liquid desiccant system, involves spraying a liquid desiccant solution (typically, lithium chloride) through an air stream, where it absorbs moisture from the air stream and provides some cooling.  · The process in which the moisture or water vapor or the humidity is removed from the air keeping its dry bulb (DB) temperature constant is called as the dehumidification process. Like the pure humidification process, in actual practice the pure dehumidification process is not possible, since the dehumidification is always accompanied by cooling or heating of the air. D ESSICCANT DEHUMIDIFICATION SYSTEMS Desiccant dehumidifiers use special materials that absorb or hold moisture. The material is unique in that it does not change in size or shape when acquiring the moisture and can be regenerated by applying heat. This method is used effectively to dry air in the range of 0% to 50% RH or below a 35°F dew point.

THE PURPOSE OF THIS MANUAL The Bry-Air Dehumidifier Manual is designed to provide specific information on humidity, dehumidification processes, and steps necessary for selecting the appropriate dehumidifier for a specific application. A series of discussions on the basic nature of wet. “Dehumidification in HVAC Systems” application engineering manual (literature order number SYS-APMEN) discusses the challenges of dehumidifying, especially at part-load conditions, and presents several ways to improve the dehumidification performance of commonly-used HVAC systems. This engineering bulletin introduces the Trane CDQ desiccant. This manual focuses on dehumidification (the process of removing moisture from air), as performed by HVAC systems in commercial comfort-cooling applications. Using basic psychrometric analyses, it reviews the dehumidification performance of various types of “cold-coil” HVAC systems.

Watch HVAC System Materials and Planning from HGTV What Makes a Home Comfortable What Makes a Home Comfortable The HVAC system, insulation and air sealing all affect a home's comfort. Heating/Cooling System Sizing Proper s. Four-pipe HVAC systems have separate supply and return lines for hot and cold water, whereas two-pipe systems share the same lines, reducing flexibility. For thousands of years, humanity was the victim of the elements. From the frigid lows. In the summertime, nothing is more refreshing than stepping into a lovely, cool home. Likewise, having a nice warm room can make cold winter days bearable. No matter where you live, you can enjoy the benefits of a well-functioning heating.