New high temperature absorbent for absorption heat pumps. Final report

Davidson, W F; Erickson, D C

Title: New high temperature absorbent for absorption heat pumps. Final report

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Abstract

A new absorption working pair (AWP) for absorption heat pumps has been identified which provides higher temperature capability (260/sup 0/C), higher lifts, and use of lower cost construction materials, than currently available absorption heat pump working fluid pairs (e.g., LiBr-H/sub 2/O). Using water as working fluid, the absorbent is a ternary mixture of LiNO/sub 3/, KNO/sub 3/, and NaNO/sub 3/ in the preferred proportions of 53, 28, and 19 weight percent, respectively. In addition to being thermally stable above 260/sup 0/C, it promotes the formation of a passive and protective corrosion resistant oxide film on both mild steel and all stainless steels. The thermodynamic, corrosion, and stability properties of this new absorbent have been measured. At temperatures of 260/sup 0/C and higher the absorbent has negligible thermal decomposition, has corrosion rates less than 1 mil/year for both carbon steel and austenitic stainless steel, and provides practical heat pumping lifts of up to 90/sup 0/C.

Authors:: Davidson, W F; Erickson, D C

Publication Date:: Thu May 01 00:00:00 EDT 1986

Research Org.:: Energy Concepts Co., Annapolis, MD (USA)

OSTI Identifier:: 5638877

Report Number(s):: ORNL/Sub-85-22013/1
ON: DE86012483

DOE Contract Number:: AC05-84OR21400

Resource Type:: Technical Report

Resource Relation:: Other Information: Portions of this document are illegible in microfiche products

Country of Publication:: United States

Language:: English

Subject:: 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; HEAT PUMPS; WORKING FLUIDS; AQUEOUS SOLUTIONS; COMPARATIVE EVALUATIONS; CORROSION PROTECTION; ECONOMICS; LITHIUM BROMIDES; LITHIUM NITRATES; MIXTURES; PERFORMANCE; POTASSIUM NITRATES; SODIUM NITRATES; STABILITY; ALKALI METAL COMPOUNDS; BROMIDES; BROMINE COMPOUNDS; DISPERSIONS; FLUIDS; HALIDES; HALOGEN COMPOUNDS; LITHIUM COMPOUNDS; LITHIUM HALIDES; NITRATES; NITROGEN COMPOUNDS; OXYGEN COMPOUNDS; POTASSIUM COMPOUNDS; SODIUM COMPOUNDS; SOLUTIONS; 320100* - Energy Conservation, Consumption, & Utilization- Buildings

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                    Davidson, W F, and Erickson, D C. New high temperature absorbent for absorption heat pumps. Final report.  United States: N. p., 1986. 
        Web.

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                    Davidson, W F, & Erickson, D C. New high temperature absorbent for absorption heat pumps. Final report.  United States.

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                    Davidson, W F, and Erickson, D C. 1986.  
        "New high temperature absorbent for absorption heat pumps. Final report".  United States.

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@article{osti_5638877,

  title        = {New high temperature absorbent for absorption heat pumps. Final report},

  author       = {Davidson, W F and Erickson, D C},

  abstractNote = {A new absorption working pair (AWP) for absorption heat pumps has been identified which provides higher temperature capability (260/sup 0/C), higher lifts, and use of lower cost construction materials, than currently available absorption heat pump working fluid pairs (e.g., LiBr-H/sub 2/O). Using water as working fluid, the absorbent is a ternary mixture of LiNO/sub 3/, KNO/sub 3/, and NaNO/sub 3/ in the preferred proportions of 53, 28, and 19 weight percent, respectively. In addition to being thermally stable above 260/sup 0/C, it promotes the formation of a passive and protective corrosion resistant oxide film on both mild steel and all stainless steels. The thermodynamic, corrosion, and stability properties of this new absorbent have been measured. At temperatures of 260/sup 0/C and higher the absorbent has negligible thermal decomposition, has corrosion rates less than 1 mil/year for both carbon steel and austenitic stainless steel, and provides practical heat pumping lifts of up to 90/sup 0/C.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/5638877},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Thu May 01 00:00:00 EDT 1986},

  month        = {Thu May 01 00:00:00 EDT 1986}

}

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