Giacomo Pisano, Dorin, Performance of CO2 TC system - case study with local retailer

2. CO2 TRANSCRITICAL SYSTEMS IN
CHINESE SUPERMARKETS
GIACOMO PISANO - DORIN SPA

3. DORIN: COMPANY INTRODUCTION
• COMPANY FOUNDED IN 1918 - 101 BIRTHDAYS
• FIRST CFC COMPRESSOR: 1932
• FIRST S.HERMETIC COMPRESSOR: 1952
• HELIUM LEAK TEST SINE 1980
• SLING DISK LUBRICATION SINCE 1985
• INVERTER DRIVE SINCE 1990
• CO2 TK APPLICATIONS SINCE 1995
• 4 SITES IN ITALY – HQ FIRENZE
• 1 PRODUCTION SITE IN CHINA – SHANGHAI
• SALES OFFICES IN CHINA, RUSSIA, JAKARTA and USA

4. CO2 : MYTHS AND TRUTHS
• TRUTH: CO2 WORKS AT HIGHER PRESSURES THAN HFC
• MYTH : CO2 SYSTEMS EXPLODE EASILY
• TRUTH : A PROPER DESIGN IS EASY TO HANDLE
• TRUTH : A PROPER TRAINING IS HIGHLY RECOMMENDED
• MYTH : CHINESE CONTRACTORS ARE NOT ABLE TO HANDLE CO2 TECHNOLOGY
• TRUTH : AFTER A PROPER TRAINING SYSTEMS IS WELL KEPT RUNNING
• MYTH : CO2 IS NOT EFFICIENT IN WARMER REGIONS - CO2 EQUATOR
• TRUTH : ACTUAL SYSTEM ENHANCEMENT ALLOWS EFFICIENT OPERATION
UP TO 50°C AMBIENT TEMPERATURE
• TRUTH : CO2 EQUATOR = THE EQUATOR

5. • TRUTH OR MYTH ?
• REGULATIONS TO BE OF INSPIRATION FOR SAFE CO2 SYSTEMS DEPLOYMENT
• EXAMPLE : CO2 - UL APPROVAL
• HP PS = 150 bar - BURST TEST 750 @ bar
• LP PSs = 100 bar - BURST TEST @ 500 bar
SUGGESTION :
DO NOT REPEAT SAME MISTAKES
• TOO STRINGENT REGULATIONS MAY KILL A GREAT NEW TECHNOLOGY
• SIMILAR TO WHAT HAPPENED WHEN CARS APPEARED FOR THE FIRST TIME
CO2 : MYTHS AND TRUTHS

6. CO2 SYSTEMS FOR
CHINESE SUPERMARKETS
• TRUTH : CO2 TRANS-CRITICAL TECHNOLOGY IS VIABLE, SAFE AND EFFICIENT
• ALSO IN CHINA !!
• EXAMPLE : CSF SUPERMARKET - BEIJING
• TECHNICAL SPECIFICATIONS
• 150 kW MT CAPACITY
• 30 kW LT CAPACITY
• PARALLEL COMPRESSION
• AMBIENT DESIGN TEMPERATURE = 42°C

7. • EXAMPLE : CSF SUPERMARKET - BEIJING
CO2 SYSTEMS FOR
CHINESE SUPERMARKETS

8. • EXAMPLE : CSF SUPERMARKET - BEIJING
CO2 SYSTEMS FOR
CHINESE SUPERMARKETS

9. • EXAMPLE : CSF SUPERMARKET - BEIJING
CO2 SYSTEMS FOR
CHINESE SUPERMARKETS

10. • EXAMPLE : CSF SUPERMARKET - BEIJING
• FIELD EXPERIENCE
• JUNE 2018 - RACK DELIVERY ON SITE
• 7 (HOT) DAYS: COMMISSIONING COMPLETED SUCCESFULLY
• PEAK TEMPERATURES OF 42°C
• NO ADIABATIC GAS COOLER IN OPERATION
• NO AIR-CONDITIONING IN OPERATION - OPEN CABINETS DOORS
• REFRIGERATION DUTIES FULFILLED WITH NO ISSUES
• CONTRACTOR FEELING VERY COMFORTABLE WITH INSTALLATION
• COMPRESSORS RUNNING SMOOTH
• PERFECT OIL MANAGEMENT ALSO FOR PARALLEL COMPRESSION
• VERY GOOD PERCEPTION OF SYSTEM PERFORMANCE
• REASONABLY BETTER THAN HFCs SYSTEMS PREVIOUSLY USED
• NOT DIRECT COMPARISON IS UNFORTUNATELY AVAILABLE
• MORE SYSTEMS TO COME IN THE NEAR FUTURE
CO2 SYSTEMS FOR
CHINESE SUPERMARKETS

11. • EXAMPLE : CSF SUPERMARKET - BEIJING
• FIELD EXPERIENCE: ADIABATIC COOLING
CO2 SYSTEMS FOR
CHINESE SUPERMARKETS
• ADIABATIC COOLING: EXCELLENT COP IMPROVEMENT
• SIMPLE SOLUTION FOR WARMER CLIMATES

12. • EXAMPLE : CSF SUPERMARKET - BEIJING - ADIABATIC COOLING
CO2 SYSTEMS FOR
CHINESE SUPERMARKETS
COP = 1.23
COP = 2.32

13. 谢谢
CO2 SYSTEMS FOR
CHINESE SUPERMARKETS