Abstract
The Argonne hydrogen conversion and storage system (HYCSOS), under development since 1975, is a two-hydride concept which operates as a chemical heat pump for the storage and recovery of thermal energy for heating, cooling and energy conversion. The system, designed and constructed to show the scientific feasibility of the concept and to evaluate system components and materials for use as hydrides, has been operational for several years. Hardware for the operation of the system under computer program control is complete and routines for data handling and analysis are available. Transient thermal and effectiveness measurements on the current coiled-tubing heat exchangers were made and will be compared with those for an advanced concept tubular heat exchanger with alloy-loaded aluminum foam for heat transfer enhancement. Recent developments of alloy materials and their use in chemical heat pumps will be discussed.
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