CO2 as a Refrigerant — Criteria for Choosing Refrigerants
This is post number 2 of a series.
Multiple factors need to be carefully considered when selecting any refrigerant, including its cooling capacity, safety, environmental impact, ease of use, cost, and availability of components and expertise. Table 1 summarizes these and other key criteria, and shows how well R744 meets them.
In general, the table shows that R744 offers a more superior cooling capacity than conventional refrigerants while meeting the demand for a natural refrigerant with low global warming impact, but presents challenges in both its application and handling.
In the next post, we’ll look at the properties of R744 as a naturally occurring substance.
Director – CO2 Business Development, Emerson Climate Technologies
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Excerpt from original document; Commercial CO2 Refrigeration Systems, Guide for Subcritical and Transcritical CO2 Applications.
To read all posts in our series on CO2 as a Refrigerant, click on the links below:
- Series Introduction
- Criteria for Choosing Refrigerants
- Properties of R744
- Introduction to Trancritical Operation
- Five Potential Hazards of R744
- Comparison of R744 with Other Refrigerants
- R744 Advantages / Disadvantages
- Introduction to R744 Systems
- Introduction to Retail Transcritical Systems
- Retail Booster Systems
- Introduction to Retail Cascade Systems
- Introduction to Secondary Systems
- Selecting the Best System