Thermochemical Energy Systems Research

    Research output: NRELTechnical Report


    This paper describes research at SERI on heat-pumped thermochemical energy systems and thermochemical reduction of CO2 to CO for open-loop solar energy transport. Analysis of the NaOH-H2o heat-pumped system indicated cost-effectiveness relative to a hot oil solar system with parabolic trough receivers for production of 0.101 MPa saturated steam. Current work is on definition of high-temperatureheat-pumped systems. Future work should be experimental with an objective of small-scale validation of high-temperature heat-pumped systems. The thermochemical CO2 reduction is an extremely difficult and long-range research problem. Costs are unknown but are suspected to be high because of system complexity. The CO2 reduction research should be de-emphasized.
    Original languageAmerican English
    Number of pages8
    StatePublished - 1983

    NREL Publication Number

    • NREL/TP-234-2060


    • heat-pumped thermochemical energy systems
    • high-temperature heat-pumped systems
    • thermochemical reduction


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