Reverse absorption mode of the HYCSOS chemical heat pump with low grade (approx. 30/sup 0/C) thermal energy inputs [electronic resource].
- Published
- Argonne, Ill. : Argonne National Laboratory, 1980.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description
- Pages: 23 : digital, PDF file
- Additional Creators
- Argonne National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access
- Free-to-read Unrestricted online access
- Summary
- An efficient and cost competitive chemical heat pump and energy conversion system driven by solar, other low grade heat sources or by fossil fuels (gas or oil), has been under development at the Argonne National Laboratory since 1975. The HYCSOS concept involves the use of two different metal hydrides with different free energies of formation enabling hydrogen to flow from one to another of the hydrides under the influence of appropriate thermal gradients. In the chemical heat pump mode, hydrogen flows between two pairs of four vessels which take the place of the generator/condenser and evaporator/absorber elements of conventional absorption refrigerators. The functions of generator/absorber and condenser/evaporator are interchanged at the end of each two minute cycle. The chemical heat pump materials are based on the AB/sub 5/ alloys which combine a remarkable ability to absorb hydrogen rapidly and reversibly at moderate pressures near ambient temperatures with a large hydrogen storage capacity. The recent development of LaNi/sub 5-x/Al/sub x/ ternary alloys has provided a versatile class of materials whose hydrogen dissociation pressures can be varied in a precisely predetermined manner by almost three orders of magnitude. With these new materials it will be possible to operate the chemical heat pumps over a wide range of preselected temperatures and pressures. The operation of the HYCSOS chemical heat pump for upgrading of low-grade (approx. 30/sup 0/C) thermal energy input will be stressed.
- Report Numbers
- E 1.99:conf-800133-1
conf-800133-1 - Subject(s)
- Other Subject(s)
- Chemical Heat Pumps
- Operation
- Cooling Systems
- Heating Systems
- Solar Cooling Systems
- Solar Heating Systems
- Thermochemical Heat Storage
- Alloys
- Aluminium Alloys
- Demonstration Programs
- Dissociation
- Hydrides
- Hydrogen
- Lanthanum Alloys
- Nickel Alloys
- Waste Heat
- Cryogenic Fluids
- Elements
- Energy
- Energy Sources
- Energy Storage
- Equipment
- Fluids
- Heat
- Heat Pumps
- Heat Storage
- Hydrogen Compounds
- Nonmetals
- Rare Earth Alloys
- Solar Equipment
- Storage
- Wastes
- Note
- Published through SciTech Connect.
01/01/1980.
"conf-800133-1"
Workshop on thermochemical energy storage, Stockholm, Sweden, 7 Jan 1980.
Gruen, D.M.; Mendelsohn, M.; Sheft, I.; Lamich, G. - Funding Information
- W-31-109-ENG-38
View MARC record | catkey: 14101581