Data from Laboratory Tests of a Prototype Carbon Dioxide Ground-Source Air Conditioner

Description

These data from the laboratory tests of a prototype residential liquid-to-air ground-source air conditioner (GSAC) using CO2 as the refrigerant. The data collection and processing methods are described in detail in this report: Report Title: "Laboratory Tests of a Prototype Carbon Dioxide Ground-Source Air Conditioner", NIST Technical Note 2068 Publication Date: October 2019 DOI: https://doi.org/10.6028/NIST.TN.2068 Authors: Harrison Skye, Wei Wu The tests were performed in an environmental chamber and followed the ISO 13256-1 standard for rating GSHPs. The CO2 GSAC operated either in a subcritical or a transcritical cycle, depending on the entering liquid temperature (ELT). The test results included the coefficient of performance (COP), capacity, sensible heat ratio (SHR), and pressures. The system incorporated a liquid-line/suction-line heat exchanger (LLSL-HX), which was estimated to cause a COP penalty of (0 to 2) % for ELTs ranging (10 to 25) °C, and benefit of (0 to 5) % for ELTs ranging (30 to 39) °C. With ELTs ranging (10 to 39) °C the CO2 system cooling COP ranged (7.3 to 2.4). At the standard rating condition (ELT 25 °C), the CO2 GSAC cooling COP was 4.14, and at part-load conditions (ELT 20 °C) the system had a COP of 4.92.

Resources

Name Format Description Link
47 https://data.nist.gov/od/ds/mds2-2142/CO2_GSAC_Lab_Tests%20%28TN%202068%29%20-%20Appendix%20data.csv.sha256
47 https://data.nist.gov/od/ds/mds2-2142/CO2_GSAC_Lab_Tests%20%28TN%202068%29%20-%20Appendix%20data.xlsx.sha256
0 This data is from the appendix of the publication. The data are for the system at steady state, and are an average of 120 samples taken over 30 minutes. https://data.nist.gov/od/ds/mds2-2142/CO2_GSAC_Lab_Tests%20%28TN%202068%29%20-%20Appendix%20data.xlsx
47 https://data.nist.gov/od/ds/mds2-2142/README.txt.sha256
47 Description of the dataset https://data.nist.gov/od/ds/mds2-2142/README.txt
0 https://doi.org/10.18434/M32142
0 This data is from the appendix of the publication. The data are for the system at steady state, and are an average of 120 samples taken over 30 minutes. https://data.nist.gov/od/ds/mds2-2142/CO2_GSAC_Lab_Tests%20%28TN%202068%29%20-%20Appendix%20data.csv

Tags

  • air-conditioner
  • carbon-dioxide
  • subcritical-and-transcritical-cycles
  • co2
  • ground-source-heat-pump

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