Alternative cooling systems for large scale buildings (commercial malls), agrofood industries and commercial logistics. Choice of refrigerants according to Greenhouse impacts and energy efficiency targets

Reference: B.4.4

LEME Mitigation

Using refigerants like the R448a in cooling systems or the NH3 and CO2 refrigerants (natural fluids) to reduce energy consumption by 20% and have a reduced Global Warming Power (ratio: GWP level). Selection criteria refer to comments.

Large scale cooling installations of commercial centres and hypermarkets (60% of total electricity consumption for cooling). Industries in the agrofood sector as the commercial logistics having to retrofit the exiting facilities.

At least increase of 20% of the energy efficiencvy Replacing the polluting fluids such as CFCs, and HFC (R404a and R507a). The range of fluids is quite large. The GWP is the main criteria (base 0: natural fluids)

Acceptable refrigerants according to interational practices and international agreements (use of refrigerents cooling systems)

Estimated pay back time short term : 2-4 years, medium term: 4-6 years, long term : 6-8 years (*)

Short term for activities which should retrofit their factilities urgently to comply with lesgislation objectives on the use of refrigerants Medium term in other cases as Greenfield project (commercial logistics)

Cooling activities are representing a strategic sector to reduce energy consumption: agrofood industries, commercial facilities and hypermarkets (large scale electricity consumption for cooling). More and more refrigerants as such as R 448 is an option to reduce electricity consumption by 20% and in the same time have GWP ratio under 2500. NH3 (R717) and CO2 (R744) or both combined are the best option to achieve better efficiencies and in the same time targetting low GWP at zero level in fact (natural fluids). Mauritius is expected to be a major market for these new solutions (cleaner refrigerants). Project investments including R 448 fluids are eligible. Project investments including R 717 and/or R 744 (natutal fluids) should be assessed according to their profitability and electricity savings. Information on the investment description should be submitted to the Banks (by project investors and/or their engineering companies, associated in the project design end sizing). This last option (natural fluids) is not yet disseminated at a large scale on the market.
The old/previous fluid should be collected and treated adequately to avoid leaks.