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Title: Development and proof-testing of advanced absorption refrigeration cycle concepts. Report on Phases 1 and 1A

Abstract

The overall objectives of this project are to evaluate, develop, and proof-test advanced absorption refrigeration cycles that are applicable to residential and commercial heat pumps for space conditioning. The heat pump system is to be direct-fired with natural gas and is to use absorption working fluids whose properties are known. Target coefficients of performance (COPs) are 1.6 at 47{degrees}F and 1.2 at 17{degrees} in the heating mode, and 0.7 at 95{degree}F in the cooling mode, including the effect of flue losses. The project is divided into three phases. Phase I entailed the analytical evaluation of advanced cycles and included the selection of preferred concepts for further development. Phase II involves the development and testing of critical components and of a complete laboratory breadboard version of the selected system. Phase III calls for the development of a prototype unit and is contingent on the successful completion of Phase II. This report covers Phase I work on the project. In Phase 1, 24 advanced absorption cycle/fluid combinations were evaluated, and computer models were developed to predict system performance. COP, theoretical pump power, and internal heat exchange were calculated for each system, and these calculations were used as indicators of operating and installedmore » costs in order to rank the relative promise of each system. The highest ranking systems involve the cycle concept of absorber/generator heat exchange, generator heat exchanger/absorber heat exchange, regeneration, and resorption/desorption, in combination with the NH{sub 3}/H{sub 2}O/LiBr ternary absorption fluid mixture or with the NH{sub 3}/H{sub 2}O binary solution. Based upon these conclusions, the recommendation was made to proceed to Phase II, the laboratory breadboard proof-of- concept.« less

Authors:
;  [1]
  1. Trane Co., La Crosse, WI (United States). Applied Unitary/Refrigeration Systems Div.
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Trane Co., La Crosse, WI (United States). Applied Unitary/Refrigeration Systems Div.
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10148146
Report Number(s):
ORNL/Sub-86-17498/1
ON: DE92014933
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Mar 1992
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 36 MATERIALS SCIENCE; ABSORPTION REFRIGERATION CYCLE; FEASIBILITY STUDIES; GAS HEAT PUMPS; MATERIALS; TESTING; RESIDENTIAL SECTOR; COMMERCIAL SECTOR; NATURAL GAS; WORKING FLUIDS; COEFFICIENT OF PERFORMANCE; ENERGY CONSERVATION; ENERGY EFFICIENCY; COMPUTERIZED SIMULATION; AMMONIA; LITHIUM BROMIDES; WATER; MIXTURES; 320106; 360606; BUILDING EQUIPMENT; PHYSICAL PROPERTIES

Citation Formats

Modahl, R. J., and Hayes, F. C. Development and proof-testing of advanced absorption refrigeration cycle concepts. Report on Phases 1 and 1A. United States: N. p., 1992. Web. doi:10.2172/10148146.
Modahl, R. J., & Hayes, F. C. Development and proof-testing of advanced absorption refrigeration cycle concepts. Report on Phases 1 and 1A. United States. https://doi.org/10.2172/10148146
Modahl, R. J., and Hayes, F. C. 1992. "Development and proof-testing of advanced absorption refrigeration cycle concepts. Report on Phases 1 and 1A". United States. https://doi.org/10.2172/10148146. https://www.osti.gov/servlets/purl/10148146.
@article{osti_10148146,
title = {Development and proof-testing of advanced absorption refrigeration cycle concepts. Report on Phases 1 and 1A},
author = {Modahl, R. J. and Hayes, F. C.},
abstractNote = {The overall objectives of this project are to evaluate, develop, and proof-test advanced absorption refrigeration cycles that are applicable to residential and commercial heat pumps for space conditioning. The heat pump system is to be direct-fired with natural gas and is to use absorption working fluids whose properties are known. Target coefficients of performance (COPs) are 1.6 at 47{degrees}F and 1.2 at 17{degrees} in the heating mode, and 0.7 at 95{degree}F in the cooling mode, including the effect of flue losses. The project is divided into three phases. Phase I entailed the analytical evaluation of advanced cycles and included the selection of preferred concepts for further development. Phase II involves the development and testing of critical components and of a complete laboratory breadboard version of the selected system. Phase III calls for the development of a prototype unit and is contingent on the successful completion of Phase II. This report covers Phase I work on the project. In Phase 1, 24 advanced absorption cycle/fluid combinations were evaluated, and computer models were developed to predict system performance. COP, theoretical pump power, and internal heat exchange were calculated for each system, and these calculations were used as indicators of operating and installed costs in order to rank the relative promise of each system. The highest ranking systems involve the cycle concept of absorber/generator heat exchange, generator heat exchanger/absorber heat exchange, regeneration, and resorption/desorption, in combination with the NH{sub 3}/H{sub 2}O/LiBr ternary absorption fluid mixture or with the NH{sub 3}/H{sub 2}O binary solution. Based upon these conclusions, the recommendation was made to proceed to Phase II, the laboratory breadboard proof-of- concept.},
doi = {10.2172/10148146},
url = {https://www.osti.gov/biblio/10148146}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Mar 01 00:00:00 EST 1992},
month = {Sun Mar 01 00:00:00 EST 1992}
}