Thermally Activated Desiccant Technology for Heat Recovery and Comfort
Desiccant cooling is an important part of the diverse portfolio of Thermally Activated Technologies (TAT) designed for conversion of heat for the purpose of indoor air quality control. Thermally activated desiccant cooling incorporates a desiccant material that undergoes a cyclic process involving direct dehumidification of moist air and thermal regeneration. Desiccants fall into two categories: liquid and solid desiccants. Regardless of the type, solid or liquid, the governing principles of desiccant dehumidification systems are the same. In the dehumidification process, the vapor pressure of the moist air is higher than that of the desiccant, leading to transfer of moisture from the air to the desiccant material. By heating the desiccant, the vapor pressure differential is reversed in the regeneration process that drives the moisture from the desiccant. Figure 1 illustrates a rotary solid-desiccant dehumidifier. A burner or a thermally compatible source of waste heat can provide the required heat for regeneration.
- Research Organization:
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC36-99-GO10337
- OSTI ID:
- 861046
- Report Number(s):
- NREL/JA-550-37648; TRN: US200601%%602
- Journal Information:
- ASME Advanced Energy Systems Division Newsletter, Fall 2005, Related Information: Posted with permission.
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
AIR
AIR QUALITY
BURNERS
DESICCANTS
HEAT RECOVERY
HEATING
MOISTURE
REGENERATION
VAPOR PRESSURE
WASTE HEAT
THERMALLY ACTIVATED DESICCANT TECHNOLOGY
DESICCANT COOLING
THERMALLY ACTIVATED TECHNOLOGIES
TAT
DESICCANT MATERIAL
INDOOR AIR QUALITY CONTROL
COMBINED HEAT AND POWER
CHP
Buildings