The Future of CO₂ Refrigeration in Australian Supermarkets
Metadata
| Field | Value |
|---|---|
| Title | The Future of CO₂ Refrigeration in Australian Supermarkets |
| Author | lizoneill4 |
| Site | Aker Advantage |
| Published | 미상 (7월 29일, 연도 미상) |
| Words | ~1000 |
| Language | en |
| URL | https://www.akeradvantage.com.au/post/the-future-of-co-refrigeration-in-australian-supermarkets |
한국어 요약 (Korean Summary)
배관·부품 공급업체 관점에서 쓴 CO2(R744) 트랜스크리티컬 냉장 전환 현황 기사. 호주 슈퍼마켓 약 400개(전체의 8.5%)가 트랜스크리티컬 CO2 시스템 운영 중, 최근 1년간 설치 건수 20%+ 증가(다른 소스인 ATMOsphere 5.5장의 “330개, 7.7%“보다 다소 높은 수치 — 집계 시점 차이로 추정, 교차확인 가치). Woolworths·Coles가 전환을 주도. 초기 CO2 시스템이 더운 기후(외기온 31.1°C 초과 시 운전압력 급증)에서 약점이었으나, 병렬압축(parallel compression)·멀티이젝터·단열가스쿨러·전자제어 기술로 호주 대부분 지역에서 효율적 운전 가능해짐. 전환 장벽: 높은 초기투자비, 고압배관·CO2 전문 기술자 부족. 향후 독립 슈퍼마켓·냉장창고·식품가공·물류센터로 확산 전망. 냉매 GWP 비교: R404A ~3,922, CO2=1.
Original Content
Walk into a newly built or recently refurbished supermarket in Australia and there’s a good chance the refrigeration system keeping your groceries cold is running on CO₂ (R744).
Once considered a technology best suited to Europe’s cooler climate, transcritical CO₂ refrigeration has rapidly become the preferred choice for major Australian supermarket chains.
Australia’s Shift Towards CO₂ Refrigeration
For decades, Australian supermarkets relied on synthetic refrigerants such as R404A, R134a, R410A. While these refrigerants perform well, many have high Global Warming Potentials (GWP), meaning even small refrigerant leaks can have a significant environmental impact.
CO₂, by comparison, has a GWP of just 1, making it one of the most environmentally responsible refrigerants available. Combined with Australia’s HFC phase-down and increasing corporate sustainability commitments, this has accelerated the transition to natural refrigerants.
How Many Australian Supermarkets Use CO₂?
Industry data suggests Australia now has approximately 400 supermarkets operating transcritical CO₂ refrigeration systems, representing around 8.5% of the country’s supermarket sector. The number of installations increased by more than 20% in a single year.
Major Supermarkets Are Leading the Transition
Woolworths continues to roll out transcritical CO₂ systems across new stores and major refurbishments. Coles has also committed to expanding the number of stores operating on natural refrigerants while progressively reducing its dependence on high-GWP synthetic refrigerants.
Why Are Supermarkets Choosing CO₂?
Lower Environmental Impact: CO₂ has a GWP of 1, zero ozone depletion potential, and long-term regulatory acceptance.
Improved Technology: Early CO₂ systems struggled in hot climates because operating pressures increase significantly once ambient temperatures exceed 31.1°C. Today’s systems use parallel compression, multi-ejector systems, adiabatic gas coolers, and advanced electronic controls, allowing CO₂ refrigeration to operate efficiently throughout much of Australia.
Better Energy Performance: Modern systems incorporate heat recovery, space heating, hot water production, and advanced energy optimisation.
What’s Slowing the Transition?
Higher Initial Investment: Transcritical CO₂ systems generally require a higher upfront investment than conventional HFC systems.
Demand for Skilled Technicians: CO₂ systems operate at significantly higher pressures than traditional refrigeration systems, requiring specialised knowledge of high-pressure pipework, commissioning, pressure testing, CO₂ controls, and system optimisation.
What Does This Mean for the Refrigeration Industry?
Demand is increasing for high-pressure copper piping, CuFe2P (K65) pipe and fittings, 70 bar and 130 bar fittings, pressure-rated valves, and CO₂-compatible components.
Looking Ahead
Industry forecasts suggest Australia’s transcritical CO₂ refrigeration market will continue expanding strongly throughout the next decade, extending beyond major supermarket chains into independent supermarkets, cold storage facilities, food processing plants, distribution centres, and large industrial refrigeration applications.
The Bottom Line
The Australian refrigeration industry is undergoing one of its biggest technological shifts in decades. What began as an environmentally driven alternative has evolved into a mature, reliable and increasingly mainstream refrigeration solution.