by Andre Patenaude | Jan 23, 2024 | Efficiency & Refrigerant Regulations, Refrigerants
In post seven of our CO2 as a Refrigerant blog series, I will weigh the relative advantages and disadvantages of R-744. Weighing the Advantages and Disadvantages of R744 Table 1 outlines the advantages and disadvantages of R-744 as a refrigerant. Although the list of...
by Andre Patenaude | Jan 23, 2024 | Efficiency, Efficiency & Refrigerant Regulations, Refrigerants
In post eight of our CO2 as a Refrigerant blog series, I provide an introduction of leading CO2 commercial refrigeration architectures, including: booster and cascade systems. Reviewing the application considerations for R-744 As I’ve explained in previous blogs in...
by Andre Patenaude | Jan 23, 2024 | Efficiency & Refrigerant Regulations, Refrigerants
In post nine of our CO2 as a Refrigerant blog series, I explore the emerging potential for CO2 single-stage systems in commercial refrigeration and/or retail settings. Introduction to retail CO2 systems The diagram in Figure 1 depicts a simple CO2 single-stage system,...
by Andre Patenaude | Jan 23, 2024 | Efficiency & Refrigerant Regulations, Refrigerants
In post 10 of our CO2 as a Refrigerant blog series, I examine the most common and widely adopted CO2 commercial refrigeration system: CO2 booster. Because of R-744’s high discharge temperature and high differential pressures, a two-stage compression strategy is needed...
by Andre Patenaude | Jan 23, 2024 | Efficiency & Refrigerant Regulations, Refrigerants
In post 11 of our CO2 as a Refrigerant blog series, I provide an introduction to CO2 cascade systems used in commercial refrigeration systems. A CO2 cascade system is comprised of two distinct stages and systems: A low stage provides the cooling using R-744, always...