Polymers as advanced materials for desiccant applications

Technical Report · Sat Dec 01 04:00:00 EST 1990

DOI:https://doi.org/10.2172/5774745· OSTI ID:5774745

Czanderna, A W

This research is concerned with solid materials used as desiccants for desiccant cooling systems (DCSs) that process water vapor in an atmosphere to produce cooling. Background information includes an introduction to DCSs and the role of the desiccant as a system component. The water vapor sorption performance criteria used for screening the modified polymers prepared include the water sorption capacity from 5% to 80% relative humidity (R.H.), isotherm shape, and rate of adsorption and desorption. Measurements are presented for the sorption performance of modified polymeric advanced desiccant materials with the quartz crystal microbalance. Isotherms of polystyrene sulfonic acid (PSSA) taken over a 5-month period show that the material has a dramatic loss in capacity and that the isotherm shape is time dependent. The adsorption and desorption kinetics for PSSA and all the ionic salts of it studied are easily fast enough for commercial DCS applications with a wheel rotation speed of 6 min per revolution. Future activities for the project are addressed, and a 5-year summary of the project is included as Appendix A. 34 refs., 20 figs., 3 tabs.

• Research Organization: Solar Energy Research Inst., Golden, CO (USA)
• Sponsoring Organization: DOE; USDOE, Washington, DC (USA)
• DOE Contract Number: AC02-83CH10093
• OSTI ID: 5774745
• Report Number(s): SERI/TP-213-3608; ON: DE90000389
• Country of Publication: United States
• Language: English

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
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ADSORPTION
ADSORPTION ISOTHERMS
ADVANCED MATERIALS
AIR CONDITIONING
CAPACITY
CHEMICAL COMPOSITION
COOLING SYSTEMS
DESICCANT COOLING SYSTEMS
DESICCANTS
DESORPTION
DOCUMENT TYPES
ENERGY SYSTEMS
FLUIDS
GASES
HUMIDITY
IONIC SALTS
ISOTHERMS
KINETICS
MATERIALS TESTING
MEASURING METHODS
MOLECULAR WEIGHT
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PERFORMANCE TESTING
POLYMERS
PROGRESS REPORT
RESEARCH PROGRAMS
SALTS
SAMPLE PREPARATION
SOLUBILITY
SORPTION
SORPTIVE PROPERTIES
SULFONIC ACIDS
SURFACE PROPERTIES
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TIME DEPENDENCE
VAPORS
WATER VAPOR