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Assessment of Performance gained from
different experiences in Italy with CO2/HC systems used
for commercial refrigeration...
What is COOP
1854
first
cooperative
store in Turin
2017
> 1,000
supermarkets
> 100 hypermarkets
Coop’s history dates back ...
Coop LIGURIA
NOVACOOP
Coop LOMBARDIA
Coop CENTRO ITALIA
Unicoop FIRENZE
Unicoop TIRRENO
Coop ALLEANZA 3.0
ANCC – Instituti...
86
12,4
MARKET SHARE
TOTAL
Cooperatives
BLN €
SALES
14,7 %
1.200
(113 Iper)
8,6
Stores
Mln
members
MARKET SHARE
SUPER+IPER...
10-
20%
OVER
20%
Up to
10%
Market share
45%
35%28%
27%
22%
14%
13%
11%
10%3%
4%
7%
4%
8% 9%
20%
16
REGIONS
75
PROVINCES
74...
HYPERMARKETS
SUPERSTORES
>2500 sqM
SUPERMARKETS
400 to 1500 sqM
CONVENIENCE
<400 sqM
Coop stores_multi format strategy
Com...
INRES is also
responsible for
store fitting-out,
purchasing
machinery and
equipment
necessary for store
operations.
What i...
Chairman
Production Dept.
PM
Building
Technical Dept.
Environment Energy M&E Dept.
Refrigeration
R&D Dept.
Design
Fittings...
COOP AND THE ENVIRONMENT
• COOP stands for Cooperative, Consumer Cooperative.
• It’s not an enterprise like others, it is not a joint stock company...
COOP and the Environment
_OUR VISION
«Treat the Earth well:
it was not given to you by your parents, it was loaned to you ...
Coop’s environmental program
For stores, warehouses, transportation, administrative offices.
• Identifying new shopping ce...
 In the construction phase: set up of the construction
site, noise, visual and environmental impact, heavy
goods vehicles...
Architectural
and functional
layout
Interior design
Building and
Civil works
Lighting and
Electrical
HVAC, Fire
safet...
• 1998 – Collestrada Focus on energy
• 2002 – Coop Award Greenlight
• 2003 – Firenze First PV plant & Electric Energy
• 20...
COMMERCIAL REFRIGERATION
In evidence: refrigerated areas and cabinets
The food refrigeration
system has a lot of
utilities:
• Normal temperature ca...
Food Refrigeration energy consumption ISN’T
negligible
22%
9%
14%
55%
centrale TN
centrale BT
utenze TN + BT
no frigo
The ...
Refrigerants
_FROM HFC TO?
Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 |...
All Stores
The annual refrigerant leakages are equivalent to up to 20%
of energy consumption for refrigeration
HFC
PFC
SF6...
BRIEF HISTORY OF FOOD REFRIGERATION
• In 1994 Coop realized its first refrigeration plant with secondary circuit (San Daniele of Friuli Nordest). Energy
consu...
R134a + CO2Transcritical CO2
Currently monitored and proposed plants
Refrigerants
_FROM HCF TO CO2&HFO
Commercial Refriger...
• Since 2005, the most stringent quality
standards have been adopted to guarantee
temperatures in MT refrigerated cabinets...
Reduce dispersions of NT
cabinets
Energy efficiency
_ CLOSET DOORS
Commercial Refrigeration | Experiences on new Low-GWP T...
An example: retrofit of existing cabinet
Historical data
Post
Retrofit
data
Monthly energy
consumption
Energy efficiency
_...
Transcritical R744 system
FIRST EXPERIENCES
This purpose can be achieved by having a large amount of data and analysing
them accurately
There are many variables that ...
# System Type
Capacity
[kW]
T.1 CO2 transcritical (Booster) Booster 51
T.2 CO2 transcritical
Chiller+ Parallel
Compr
248
T...
Most influencing variables on energy consumption:
1. Weather conditions Condensing Temperature
2. Internal Store Temperat...
1. Weather conditions :
The outputs of the analysis are expressed as function of external
temperature.
2. Internal Tempera...
Electrical consumption comparison
• The consumption of the chiller for sub-cooling, if existing, has
been accounted with t...
33
C.7 (R134a / CO2 Cascade) consumes more than T.3 (Transcritical CO2)
• MT evaporating set point more critical for C.7 A...
2,00
4,00
6,00
8,00
10,00
12,00
-10,0 -5,0 0,0 5,0 10,0 15,0 20,0 25,0 30,0 35,0
[kWh/kW]
[°C]
T.1 (CO2)
C.8 (CO2+R134a)
•...
• The P.4 system (pumped CO2) is the most performing plant
• C.9 (Cascade system) consumes less than T.2 (Transcritical CO...
36
• Similar specific consumption between the two systems
C.6 penalized by:
 TN /BT Cooling load ratio
 Opening hour (+ ...
• Some correlations of normalized consumptions has been developed using data analysis method.
• Quantitative comparison: t...
Specific consumption of the systems depending on the climate year for the 3 analized cities
# Impianto
Torino
[kWh/kW]
Fir...
1. The variability in consumption depends on the type of plant as well as
on the boundary conditions
2. The consumption of...
Transcritical = NEW Technology
Technicians use working and optimal set points.
Otherwise how to set? It’s new!
Proper oper...
Refrigerants
_INFLUENCE OF SET POINTS NT
Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives ...
Refrigerants
_INFLUENCE OF SET POINTS LT
Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives ...
Standard Scheme
Transcritical CO2
Parallel Compressor Scheme
Transcritical CO2
Addition of a
compressor in
parallel to MT1...
Air in
Evaporating water
Temperature drop
Better heat exchange with hot gas
from compressors
Air in
Water in
Hot Air out
E...
Throttling
losses recovery
To compress
Liquid
To compress
Vapour
COP gain >10%
Energy efficiency 3
_EJECTORS
Commercial Re...
Standard Integrated
HVAC Refrigeration
Independent systems
No energy exchanges
HVAC Refrigeration
Integrated systems
Energ...
A refurbishment that join a full urban renowal with energy efficiency
MODENA VIA CANALETTO
Modena is a small town in central Italy. The shopping centre is located in a residential
neighborhood, close to the train ...
The Modena Canaletto shopping
centre is owned and operated by
Coop Alleanza 3.0, while the
CommONEnergy partner INRES is
r...
CommONEnergy consortium
PARTNERS
23 organizations from industry, SMEs and research
institutions, covering:
• Monitoring an...
Architectural design
_URBAN AND SOCIAL REGENERATION
Coop Canaletto – 2500 mq
Coop Canaletto – 1500 mq
Architectural design
_URBAN AND SOCIAL REGENERATION
Coop Canaletto – 2500 mq
Architectural design
_URBAN AND SOCIAL REGENERATION
August, 2016July 2015
Before
Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017...
Before
Access Tunnel
Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12...
Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
Work Steps
_LUG...
Below the solutions adopted in the Modena Canaletto retrofitting:
1. Artificial Lighting for the mall (common areas and co...
Solar tubes Antifog Diffusers
Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.201...
Before Later
Sensors in
the gym
The gym above
the supermarket
Commercial Refrigeration | Experiences on new Low-GWP Techno...
Integrated solutions
_A SIGNIFICANT EXAMPLE
Commercial Refrigeration | Experiences on new Low-GWP Technological Alternativ...
Modena – Via Canaletto
FIRST RESULTS
93.804
93.454
97.517
99.600
104.368
113.279
120.166
119.017
110.041
104.650
94.022
95.377
66.568
60.622
59.548
55.671
61.5...
Fortunato Della Guerra
Via Tevere, 60 – 50019 Sesto Fiorentino (FI) – Italia
fortunato.dellaguerra@inres.coop.it
Tel. +39....
Assessment of Performance and Costs Gained from Different Experiences in Italy with CO2/HC Systems Used for Commercial Ref...
Assessment of Performance and Costs Gained from Different Experiences in Italy with CO2/HC Systems Used for Commercial Ref...
Assessment of Performance and Costs Gained from Different Experiences in Italy with CO2/HC Systems Used for Commercial Ref...
Assessment of Performance and Costs Gained from Different Experiences in Italy with CO2/HC Systems Used for Commercial Ref...
Assessment of Performance and Costs Gained from Different Experiences in Italy with CO2/HC Systems Used for Commercial Ref...
Assessment of Performance and Costs Gained from Different Experiences in Italy with CO2/HC Systems Used for Commercial Ref...
Assessment of Performance and Costs Gained from Different Experiences in Italy with CO2/HC Systems Used for Commercial Ref...
Assessment of Performance and Costs Gained from Different Experiences in Italy with CO2/HC Systems Used for Commercial Ref...
Assessment of Performance and Costs Gained from Different Experiences in Italy with CO2/HC Systems Used for Commercial Ref...
Assessment of Performance and Costs Gained from Different Experiences in Italy with CO2/HC Systems Used for Commercial Ref...
Assessment of Performance and Costs Gained from Different Experiences in Italy with CO2/HC Systems Used for Commercial Ref...
Assessment of Performance and Costs Gained from Different Experiences in Italy with CO2/HC Systems Used for Commercial Ref...
Assessment of Performance and Costs Gained from Different Experiences in Italy with CO2/HC Systems Used for Commercial Ref...
Assessment of Performance and Costs Gained from Different Experiences in Italy with CO2/HC Systems Used for Commercial Ref...
Assessment of Performance and Costs Gained from Different Experiences in Italy with CO2/HC Systems Used for Commercial Ref...
Assessment of Performance and Costs Gained from Different Experiences in Italy with CO2/HC Systems Used for Commercial Ref...
Assessment of Performance and Costs Gained from Different Experiences in Italy with CO2/HC Systems Used for Commercial Ref...
Assessment of Performance and Costs Gained from Different Experiences in Italy with CO2/HC Systems Used for Commercial Ref...
Assessment of Performance and Costs Gained from Different Experiences in Italy with CO2/HC Systems Used for Commercial Ref...
Assessment of Performance and Costs Gained from Different Experiences in Italy with CO2/HC Systems Used for Commercial Ref...
Assessment of Performance and Costs Gained from Different Experiences in Italy with CO2/HC Systems Used for Commercial Ref...
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Assessment of Performance and Costs Gained from Different Experiences in Italy with CO2/HC Systems Used for Commercial Refrigeration in Supermarkets - F. Della Guerra - Inres Coop

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Assessment of Performance and Costs Gained from Different Experiences in Italy with CO2/HC Systems Used for Commercial Refrigeration in Supermarkets - F. Della Guerra - Inres Coop

  1. 1. Assessment of Performance gained from different experiences in Italy with CO2/HC systems used for commercial refrigeration in Supermarkets and deep building renovation Fortunato Della Guerra (Technical Director) Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017 (Buenos Aires – Rosario)
  2. 2. What is COOP 1854 first cooperative store in Turin 2017 > 1,000 supermarkets > 100 hypermarkets Coop’s history dates back to 1854 when the first Cooperative store was opened in Turin to answer the growing and joint needs of workers and to “buy wholesale basic commodities such as rice, flour, pasta, soap, etc. and to resell them to members at price cost”.. Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  3. 3. Coop LIGURIA NOVACOOP Coop LOMBARDIA Coop CENTRO ITALIA Unicoop FIRENZE Unicoop TIRRENO Coop ALLEANZA 3.0 ANCC – Institutional Representation Body. Organised in local divisions. COOP ITALIA – National consortium for buying and marketing strategies, as well as for the development, production and control of Coop Private Label CNNA – Non Food national consortium for non food logistics INRES –Consulting, Engineering and Planning Services for the Design of Coop stores SCUOLA COOP – Consortium for education and research 7MAJOR COOPS 92% of total Coop sales 12 MEDIUM COOPS 84 SMALL COOPS The COOP System Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  4. 4. 86 12,4 MARKET SHARE TOTAL Cooperatives BLN € SALES 14,7 % 1.200 (113 Iper) 8,6 Stores Mln members MARKET SHARE SUPER+IPER+ DISCOUNT Area of sale 1.7 Mio sqM 26% PL Coop weight on Grocery 19 % MARKET SHARE SUPER+IPER COOP key figures Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  5. 5. 10- 20% OVER 20% Up to 10% Market share 45% 35%28% 27% 22% 14% 13% 11% 10%3% 4% 7% 4% 8% 9% 20% 16 REGIONS 75 PROVINCES 744 TOWNS Coop Stores Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  6. 6. HYPERMARKETS SUPERSTORES >2500 sqM SUPERMARKETS 400 to 1500 sqM CONVENIENCE <400 sqM Coop stores_multi format strategy Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  7. 7. INRES is also responsible for store fitting-out, purchasing machinery and equipment necessary for store operations. What is INRES INRES is the National Consortium that, within the Coop System, is responsible for architectural planning, systems and building of supermarkets, hypermarkets and shopping centers. Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  8. 8. Chairman Production Dept. PM Building Technical Dept. Environment Energy M&E Dept. Refrigeration R&D Dept. Design Fittings ICT Secretarial orders, commissions and general services Administration Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  9. 9. COOP AND THE ENVIRONMENT
  10. 10. • COOP stands for Cooperative, Consumer Cooperative. • It’s not an enterprise like others, it is not a joint stock company. It is something very special, regulated by principles that join cooperatives throughout the world. • In the Cooperative… • one can freely become a member. As of today, the majority of Coop customers have chosen to become members. They are the owners of the Cooperative; • all the members count in the same way: one person, one vote. The amount of corporate capital deposited does not matter; • private speculation objectives do not exist. Profits are transformed into advantages for members and customers and serve towards the development of new Coop stores; • autonomy and independence are sacred: the cooperative only responds to its members for its work and choices; • special care it taken for all members to have the necessary information for being educated consumers and for effectively controlling the cooperative; • efficient and solid collaboration relations are maintained with other cooperatives to affirm the idea and practice of cooperation; • work and initiatives are carried out for respecting the environment, protecting health, properly using resources and for creating conditions for people to be joined by bonds of respect and solidarity. This signifies that within the context of its competence and possibilities, the cooperative takes to heart the interests of both consumers and the community.
  11. 11. COOP and the Environment _OUR VISION «Treat the Earth well: it was not given to you by your parents, it was loaned to you by your children.» Masai Proverb Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017 COOP considers the environment as belonging to everyone, therefore it must be protected from speculation, from the indiscriminate use of consumer goods and man’s negligence. Coop regarding consumer protection and social value safeguards (COOP Italia and Coop Centro Italia were the first in large retail chain to have achieved SA8000 ethic certificate) aims at defending the environment also through the characteristics of its stores and shopping centers and their building sustainability.
  12. 12. Coop’s environmental program For stores, warehouses, transportation, administrative offices. • Identifying new shopping centers respecting the territory and examining their environmental impact. • Selecting low acoustic emission machinery and equipment. • Privileging the use of easily recyclable material components or deriving from recycled materials. • Taking measures regarding the cold chain to optimize performance and retrieve heat. Measures on climate control systems adapting thermal isolation through computerized management system, co-generation and energy savings. • Improving electrical systems using high performance lights and the optimum exploiting of natural lighting. • Rationalizing warehouse management to program the flow of incoming and outgoing commodities. Increasing the use of distribution centers for reducing the use of transportation vehicles. • Rationalizing road transportation of merchandise. Total exploiting of a truck’s loading potential for avoiding useless energy consumption and reducing air pollution.
  13. 13.  In the construction phase: set up of the construction site, noise, visual and environmental impact, heavy goods vehicles traffic. A SUSTAINABLE DESIGN as well as a SUSTAINABLE MANAGEMENT, with a limited impact on the environment, is PARAMOUNT for Coop. There are POSITIVE EFFECTS ON THE ENVIRONMENT in two distinct phases: Design by COOP  In the operational phase: electricity (a hypermarket uses on average as much electricity as 1,700 families), water, waste control, sound level, induced traffic. Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  14. 14. Architectural and functional layout Interior design Building and Civil works Lighting and Electrical HVAC, Fire safety Food Refrigeration, Fittings, Procurement Energy production Design by COOP Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  15. 15. • 1998 – Collestrada Focus on energy • 2002 – Coop Award Greenlight • 2003 – Firenze First PV plant & Electric Energy • 2005 – Rimini CO2 footprint – Agreement with Municipality • 2007 – Ascoli Piceno Registration EMAS • 2007 – S.to Fiorentino Certification GBC/iiSBE • 2010 – Prato Certification Annex K/ITACA • 2011 – La Spezia Certification ISO14001 • 2012 – Desio Award Greenlight • 2013 – Carpi Certification LEED Gold • 2014 – Marghera Certification BREEAM • 2014 – Collegno Certification ITACA • 2016 – Modena CommonEnergy (FP7) • 2017 – Formigine Certification LEED Milestones Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  16. 16. COMMERCIAL REFRIGERATION
  17. 17. In evidence: refrigerated areas and cabinets The food refrigeration system has a lot of utilities: • Normal temperature cabinets • Normal temperature cold rooms • Low temperature cabinets • Low temperature cold rooms • UPS Room • Butcher shop Food Refrigeration Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  18. 18. Food Refrigeration energy consumption ISN’T negligible 22% 9% 14% 55% centrale TN centrale BT utenze TN + BT no frigo The refrigeration consumption ranges from 35 % to 50 % depending on store and climatic condition Food Refrigeration _ENERGY CONSUMPTION Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  19. 19. Refrigerants _FROM HFC TO? Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017 F-Gas HFC 927 stores2015 HFC price European regolations Data up to Actual need for alternative refrigerants 20% 65% 4% 6% 5% % of total (328Tons) R-134A R-404A R-410A R-507 R-507A
  20. 20. All Stores The annual refrigerant leakages are equivalent to up to 20% of energy consumption for refrigeration HFC PFC SF6 F - Gas Reduce usage of refrigerants with high GWP To reduce greenhouse effects Europe Purpose CO2 F Gas _Why? _REFRIGERANTS LEAKAGE Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  21. 21. BRIEF HISTORY OF FOOD REFRIGERATION
  22. 22. • In 1994 Coop realized its first refrigeration plant with secondary circuit (San Daniele of Friuli Nordest). Energy consumption is slightly higher but the environment is respected (ODP = 0) and the stability of the cabinets is greater. • Since 1997, HCFCs have been abandoned in new systems. • HCFCs were fully abbandoned in 2009 (compared with the 2014 prohibition). • The first system that uses CO2 as secondary refrigerant in the BT circuit dates back to 1999 (Iper Novate of Coop Lombardia); the first system that uses CO2 as primary refrigerant in the BT circuit dates back to 2003 (Iper Livorno Unicoop Tirreno). • Nowadays consolidated technology is the one that involves the use of R134a in MT and CO2 cascade in LT (first system in 2011 of Coselice Coop Adriatica) • Coop has built in 2013 the first system that uses only transcritical CO2 as refrigerant (Monghidoro of Coop Reno). Refrigeration systems Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  23. 23. R134a + CO2Transcritical CO2 Currently monitored and proposed plants Refrigerants _FROM HCF TO CO2&HFO Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  24. 24. • Since 2005, the most stringent quality standards have been adopted to guarantee temperatures in MT refrigerated cabinets efficiently • In 2006, the first closing frozen cabinet (Lastra a Signa Unicoop Firenze, Pesaro and Bologna San Ruffillo) was made, which later became a standard. • The first supermarket with MT refrigerated cabinets dates back to 2011 (Oderzo of Coop Nordest) • New outlets adopt this solution in a standard way Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017 Cabinet with closed door
  25. 25. Reduce dispersions of NT cabinets Energy efficiency _ CLOSET DOORS Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  26. 26. An example: retrofit of existing cabinet Historical data Post Retrofit data Monthly energy consumption Energy efficiency _CLOSET DOORS Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  27. 27. Transcritical R744 system FIRST EXPERIENCES
  28. 28. This purpose can be achieved by having a large amount of data and analysing them accurately There are many variables that influence the consumption of a supermarket and the analysis has to include all of them. Verify the real consumption of CO2 systems by comparing the various plant solution Purpose Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  29. 29. # System Type Capacity [kW] T.1 CO2 transcritical (Booster) Booster 51 T.2 CO2 transcritical Chiller+ Parallel Compr 248 T.3 CO2 transcritical Chiller 85 P.4 MT con R134a + CO2 Pumped 299 P.5 MT con R134a + CO2 Pumped 95 C.6 MT R134a + LT CO2 cascade 100 C.7 MT R134a + LT CO2 cascade 100 C.8 MT R134a + LT CO2 cascade 58 C.9 MT R134a + LT CO2 cascade 341 * The systems are very different Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017 Compared Stores
  30. 30. Most influencing variables on energy consumption: 1. Weather conditions Condensing Temperature 2. Internal Store Temperature  Cabinet thermal load 3. System Set Point 4. Ratio of installed MT cooling power and LT cooling power 5. Opening hours of the store 6. Cabinet load and cold room load These are the MAIN influencing variables but we could consider more variables. Data Analysis Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  31. 31. 1. Weather conditions : The outputs of the analysis are expressed as function of external temperature. 2. Internal Temperature: Check of the internal temperature set points 3. System set point: Comparison between evaporating and condensing set points 4. MT e LT installed cooling ratio: The results show that there is a significant difference between the sites compared 5. Opening hours: Comparison between stores with parallel opening hours Boundary Conditions Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  32. 32. Electrical consumption comparison • The consumption of the chiller for sub-cooling, if existing, has been accounted with the rack power consumption • Utilities consumption has been excluded because they introduce uncertainties.  Consumption normalized with installed cooling power  Consumptions during closing days were excluded Data Analysis – Energy Consumption Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  33. 33. 33 C.7 (R134a / CO2 Cascade) consumes more than T.3 (Transcritical CO2) • MT evaporating set point more critical for C.7 About difference of 4°C • Condensation set point more critical for C.7 2,00 4,00 6,00 8,00 10,00 12,00 0,0 5,0 10,0 15,0 20,0 25,0 30,0 [kWh/kW] [°C] C.7 (R134a+CO2) T.3 (CO2) Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017 Results: C.7 vs T.3
  34. 34. 2,00 4,00 6,00 8,00 10,00 12,00 -10,0 -5,0 0,0 5,0 10,0 15,0 20,0 25,0 30,0 35,0 [kWh/kW] [°C] T.1 (CO2) C.8 (CO2+R134a) • Characteristic performance of C.8 (R134a + CO2) COMPLETELY INFLUENCED by winter operation due to hot water production (heating) • MT evaporating set point more advantageous for T.1 Results: T.1 vs C.8 Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  35. 35. • The P.4 system (pumped CO2) is the most performing plant • C.9 (Cascade system) consumes less than T.2 (Transcritical CO2) • C.9 has the most penalizing condensation set point 2,00 4,00 6,00 8,00 10,00 12,00 0,0 5,0 10,0 15,0 20,0 25,0 30,0 35,0 [kWh/kW] [°C] C.9 (R134a+CO2) T.2 (CO2) P.4 (CO2 P) Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017 Results: C.9 vs T.2 vs P.4
  36. 36. 36 • Similar specific consumption between the two systems C.6 penalized by:  TN /BT Cooling load ratio  Opening hour (+ 1h) 2,00 4,00 6,00 8,00 10,00 12,00 0,0 5,0 10,0 15,0 20,0 25,0 30,0 [kWh/kW] [°C] C.6 (R134a+CO2) P.5 (R134a+CO2 pompato) Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017 Results: C.6 vs P.5
  37. 37. • Some correlations of normalized consumptions has been developed using data analysis method. • Quantitative comparison: the specific consumptions of all plants in three Italian cities were calculated • The climate year for each city has been provided by CTI (Italian Thermal Engineering Committee) Operating curve 2,00 4,00 6,00 8,00 10,00 12,00 16,0 21,0 26,0 [kWh/kW] [°C] Operating Curves Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  38. 38. Specific consumption of the systems depending on the climate year for the 3 analized cities # Impianto Torino [kWh/kW] Firenze [kWh/kW] Roma [kWh/kW] T1 CO2 booster 2218 2421 2469 T2 CO2 (chiller+p.c.) 2038 2273 2301 T3 CO2 (chiller) 1710 1957 2011 P4 R134a+CO2 pumped 1606 1735 1754 P5 R134a+CO2 pumped 2257 2388 2387 C6 R134a+CO2 2055 2227 2256 C7 R134a+CO2 2216 2411 2435 C9 R134a+CO2 1697 1917 1952 * C.8 is not presented because of hot water production during winter General Comparison Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  39. 39. 1. The variability in consumption depends on the type of plant as well as on the boundary conditions 2. The consumption of transcritical system and cascade system are overlapped 3. CO2 plants show good performance in terms of energy consumption 4. Weather conditions are very influential. Proper design is fundamental: new technologies such as the ejector, has to be consider in future. Future developments The progressive diffusion of transcritical systems will allow a more accurate analysis determining the influence of main variables more carefully. Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017 Conclusions
  40. 40. Transcritical = NEW Technology Technicians use working and optimal set points. Otherwise how to set? It’s new! Proper operation of transcritical plants Cascade = OLD Technology Field technicians anarchy. Their Know-how leads to working but NOT optimal set points Improper operation of cascade plant At the end of the day, they consume the same (more or less) Importance of correct operation Fundamental for energy saving Refrigerants _FROM HCF TO CO2? Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  41. 41. Refrigerants _INFLUENCE OF SET POINTS NT Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017 Energy consumption reduction - 6 %
  42. 42. Refrigerants _INFLUENCE OF SET POINTS LT Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  43. 43. Standard Scheme Transcritical CO2 Parallel Compressor Scheme Transcritical CO2 Addition of a compressor in parallel to MT1 COP gain 5-10% Energy efficiency 1 _PARALLEL COMPRESSOR Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  44. 44. Air in Evaporating water Temperature drop Better heat exchange with hot gas from compressors Air in Water in Hot Air out Energy efficiency 2 _ADIABATIC COOLING Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017 COP gain 5%
  45. 45. Throttling losses recovery To compress Liquid To compress Vapour COP gain >10% Energy efficiency 3 _EJECTORS Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  46. 46. Standard Integrated HVAC Refrigeration Independent systems No energy exchanges HVAC Refrigeration Integrated systems Energy exchanges to maximise energy efficiency HVAC and Food Refrigeration are designed to work in cooperative way The power flows depend on season Energy efficiency 5 _INTEGRATED SOLUTIONS Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  47. 47. A refurbishment that join a full urban renowal with energy efficiency MODENA VIA CANALETTO
  48. 48. Modena is a small town in central Italy. The shopping centre is located in a residential neighborhood, close to the train station as well as to the city center. In the past years such neighborhood experienced an intense social degrade, with several illegal activities. The Municipality of Modena defined a project aiming to a social and functional renovation of the area. The began purchasing the largest part of the built volumes to promote new uses and activities in the buildings. “Cambia-MO” is the institution that coordinated the project. 75% of Cambia-MO is owned by the Municipality of Modena and 25% by the regional social housing agency (“Azienda Casa Emilia- Romagna”). The supermarket retrofitting was part of the overall neighborhood requalification, as well as the renovation of the commercial gallery including varied shops and other services for the residents. Modena Canaletto _INTRODUCTION
  49. 49. The Modena Canaletto shopping centre is owned and operated by Coop Alleanza 3.0, while the CommONEnergy partner INRES is responsible for the overall refurbishment. The re-designed shopping centre has a size of around 5000 m2 (not considering the enlargement of the supermarket parking), including: • the supermarket, ca. 1000 m2 sales area; • The gallery with a new bar and a new pharmacy, other than the preexisting shops; • A preexisting post office, gymnasium, police station and new further services, such as the ‘Portierato sociale’ office, which organizes activities for young people and children (there is also a play-ground area). Modena Canaletto _INTRODUCTION Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  50. 50. CommONEnergy consortium PARTNERS 23 organizations from industry, SMEs and research institutions, covering: • Monitoring and control system manufacturer • HVAC, Refrigeration and Lighting manufacturer • Storage systems manufacturers • Solar system manufacturer • Materials manufacturer • Building enterprises • R&D experts (building physics, HVAC+R systems, monitoring, lighting, materials) • Engineering/Architectural consultants • Building owners Modena Canaletto was one of the pilot project of CommonEnergy , a project financed from EU in order to define new standard for refurbishment of shopping centers
  51. 51. Architectural design _URBAN AND SOCIAL REGENERATION Coop Canaletto – 2500 mq
  52. 52. Coop Canaletto – 1500 mq Architectural design _URBAN AND SOCIAL REGENERATION
  53. 53. Coop Canaletto – 2500 mq Architectural design _URBAN AND SOCIAL REGENERATION
  54. 54. August, 2016July 2015 Before Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  55. 55. Before Access Tunnel Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  56. 56. Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017 Work Steps _LUGLIO 2016
  57. 57. Below the solutions adopted in the Modena Canaletto retrofitting: 1. Artificial Lighting for the mall (common areas and corridors): new LED light fixtures with color temperature and intensity control; 2. Natural Lighting for the supermarket: solar tubes for the central laboratory; 3. Coupling HVAC and Refrigeration system: CO2 based refrigeration system for commercial refrigeration in warm climate. Plus: Mechanical free cooling strategy (using the already existing Air Handling Unit); 4. The best vents (for air supply) and diffusers selected and applied to reduce cabinet windows mist; 5. Passive solutions for the supermarket: thermo insulation of external walls and new windows with glazing: Ug= 1.01 W/m2K; 6. Multifunctional colored paint on the roof (smart coating); 7. iBEMS (hardware, software, programming, installation) for the systems of the gallery and the supermarket. The LEAN construction management approach has not experimented during the construction phase. Modena Canaletto _INTRODUCTION Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  58. 58. Solar tubes Antifog Diffusers Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017 Applications
  59. 59. Before Later Sensors in the gym The gym above the supermarket Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017 Application _THERMOREFLECTING PAINT IN COVER
  60. 60. Integrated solutions _A SIGNIFICANT EXAMPLE Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017
  61. 61. Modena – Via Canaletto FIRST RESULTS
  62. 62. 93.804 93.454 97.517 99.600 104.368 113.279 120.166 119.017 110.041 104.650 94.022 95.377 66.568 60.622 59.548 55.671 61.521 71.795 75.330 76.793 65.691 72.185 61.124 65.999 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC COMPARISON BETWEEN CONSUMPTION BEFORE AND AFTER THE REFURBISHMENT before after Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017 Saving > 36%
  63. 63. Fortunato Della Guerra Via Tevere, 60 – 50019 Sesto Fiorentino (FI) – Italia fortunato.dellaguerra@inres.coop.it Tel. +39.055.3367.1 Mob. +39.335.7877.244 Commercial Refrigeration | Experiences on new Low-GWP Technological Alternatives | 04.12.2017 | 06.12.2017

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