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Indoor pollution control capabilities of a desiccant dehumidifier system. Final report, July 1985-August 1986

Technical Report ·
OSTI ID:6907645
;
The recent need to conserve energy by tightening the envelope of residences and reducing their ventilation rates may lead to an increase in the concentration of pollutants generated indoors. The program was initiated by GRI to assess a desiccant dehumidifier system as a means of reducing indoor-air-pollutant concentrations. Controlled experiments were performed using a commercially available desiccant rotary unit to study the adsorption capability of silica gel and molecular sieve 5A for CO, NO/sub 2/, and SO/sub 2/ air constituents. The values measured establish the range of removal rates of these constiuents for a specific unit design. The molecular sieve demonstrated higher adsorption capabilities for CO, NO/sub 2/, and SO/sub 2/ than did the silica gel. Factors that affect the desorption of the constituents from desiccants include regeneration air temperatures and inlet constituent concentrations. Higher regeneration air temperatures and lower pollutant concentrations favor the regeneration capabilities of desiccants. Silica gel showed better trends of regeneration than did molecular sieve 5A.
Research Organization:
IIT Research Inst., Chicago, IL (USA)
OSTI ID:
6907645
Report Number(s):
PB-87-114120/XAB; IITRI-C-08840-FR
Country of Publication:
United States
Language:
English

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Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ADSORBENTS
ADSORPTION
AIR POLLUTION
AIR POLLUTION CONTROL
AIR QUALITY
BUILDINGS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CONTROL
DEHUMIDIFIERS
DESICCANTS
ENVIRONMENTAL QUALITY
INDOOR AIR POLLUTION
NITROGEN COMPOUNDS
NITROGEN DIOXIDE
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION
POLLUTION CONTROL
RESIDENTIAL BUILDINGS
SILICA GEL
SORPTION
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES