Experimental study of a carbon dioxide direct-expansion ground source heat pump (CO2-DX-GSHP)
| Autor: | Mohamed Ouzzane, Zine Aidoun, Messaoud Badache, Parham Eslami-Nejad |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Work (thermodynamics)
business.industry 020209 energy Nuclear engineering Hybrid heat Borehole Energy Engineering and Power Technology Thermodynamics 02 engineering and technology Coefficient of performance Industrial and Manufacturing Engineering law.invention Refrigerant Air conditioning law Air source heat pumps 0202 electrical engineering electronic engineering information engineering Environmental science business Heat pump |
| Zdroj: | Applied Thermal Engineering. 130:1480-1488 |
| ISSN: | 1359-4311 |
| DOI: | 10.1016/j.applthermaleng.2017.10.159 |
| Popis: | Recently, the use of natural refrigerants in air conditioners and heat pumps has raised special interest from industry and the scientific community. It is seen as one of the most promising alternatives to replace conventional refrigerants, especially in ground source heat pumps for many applications. This paper presents the results of an experimental study of a transcritical carbon dioxide direct-expansion ground coupled heat pump, in heating mode. A test facility of this system was instrumented and tested for different operating conditions. Overall system performance, evaporation phase change of CO2 inside the ground heat exchanger and effect of active borehole number on system performance were investigated. In the particular case of this work, the coefficient of performance of DX-GSHP using CO2 as refrigerant could reach 3.5. |
| Databáze: | OpenAIRE |
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