Effective Technic to Remove Humidity or Moister from Air

Desiccant Dehumidification Wheel

The Desiccant Dehumidification Wheel 

is designed to provide maximum moisture removal with a minimum 

pressure drop for those applications where humidity control 

is required. A desiccant dehumidification wheel provides the 

HVAC system designer another tool to control humidity effectively 

and efficiently particularly in the low humidity ranges.

Technologies offers a complete line of both high performance 

silica gel (WSG) and molecular sieve (LT3) desiccant 

wheels to meet all outlet humidity requirements.

➣ Improved indoor air quality                                     

➣ Precise humidity control

➣ Both silica gel (WSG) and molecular sieve(LT3) desiccant 

wheels available

➣ Utilizes all types of regeneration energy                

➣ Very low dewpoints achievable

The desiccant wheels are used extensively in the wellknown 

industrial markets for corrosion protection and humidity 

control for many industrial processes. Commercial applications

include refrigerated warehouses, ice rinks, schools, supermarkets 

and hospitals. A residential and light commercial market is 

developing where small gas fired or hot water regenerated desiccant

equipment is used for centralized humidity control. The 

ability to control home humidity in the 50% RH range improves 

comfort, saves energy with higher set point temperatures, and 

prevents the formation of mold and mildew--a potential problem 

that is of increasing importance to the homeowner.

Desiccant Cooling

The availability of waste heat from distributed generation projects 

along with the increased ventilation standards for improved 

IAQ, is revitalizing the desiccant cooling industry. With waste

heat, desiccant cooling systems become extremely efficient while 

providing the additional benefit of independent temperature and 

humidity control.

The ASHRAE Standard 62-1989 (Ventilation for Acceptable 

Indoor Air Quality), describes a recommended target ratio of 

makeup air to return air for a variety of applications and building

types. Building codes in the U.S. and abroad are becoming 

increasingly more comprehensive in addressing ventilation 

requirements. Dehumidifier line of actively regenerated desiccant

wheels combined with sensible only wheels, heat pipes, DX 

coils, and/or indirect evaporative cooling provide the design 

engineer with many options to deal with the high latent loads

associated with increased ventilation requirements.

A typical twin wheel system: a desiccant

wheel for dehumidification, and a sensible

wheel for heat exchange.