Parametric study on the performance of a direct-expansion geothermal heat pump using carbon dioxide

Applied Thermal Engineering

Volumn 31, Issue 17-18, 2011, Pages 3774-3782

  Austin, Brian T ^a   Sumathy, K ^a  

^a North Dakota State University   (United States)

Author keywords

Carbon dioxide; Direct expansion; Geothermal heat pump; R 744

Indexed keywords

A-COEFFICIENT; BASELINE SYSTEMS; COEFFICIENT OF PERFORMANCE; COIL LENGTHS; DIRECT-EXPANSION; EVAPORATION TEMPERATURE; EVAPORATOR COIL; EXPANSION DEVICES; GAS COOLER; GEOTHERMAL HEAT; HEATING CAPACITY; NUMERICAL MODELS; OPTIMUM NUMBER; PARAMETRIC STUDY; PERFORMANCE CHARACTERISTICS; R-744; STEADY STATE PERFORMANCE; SURROUNDING SOILS; TRANSCRITICAL CYCLE;

CARBON; CARBON DIOXIDE; COUPLED CIRCUITS; EVAPORATION; EVAPORATORS; EXPANSION; GAS COMPRESSORS; GEOTHERMAL ENERGY; GEOTHERMAL HEATING; OPTIMIZATION; PHASE TRANSITIONS; PUMPS; REFRIGERATING MACHINERY;

GEOTHERMAL HEAT PUMPS;

EID: 80052940104     PISSN: 13594311     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.applthermaleng.2011.07.007     Document Type: Conference Paper

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