2 embraco gregorio - atmosphere · examples of cabinet conversion application type cooler vertical...
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![Page 1: 2 EMBRACO GREGORIO - ATMOsphere · Examples of cabinet conversion APPLICATION TYPE COOLER VERTICAL 25cu.ft FREEZER 7cu.ft ICE MAKER 100lb/day Compressor Model EMT6160Z EMC3119U FFU130HAX](https://reader030.vdocuments.net/reader030/viewer/2022020414/5ba34e5b09d3f221368dbdf4/html5/thumbnails/1.jpg)
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Simplifyingthe convertion toR290
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DOE 2017Mandated legislation
driving forhigher efficiency
ENERGYSTAR
Voluntary programfor efficiency
EPAREFRIGERANT
BANEliminates current high
GWP refrigerants
Market influences
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Look at AlternateRefrigerants
Improve efficiency
Re-design of the cabinets
Impact
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The R290 solution
Facilitates OEMs to Meet Energy
Regulations (DOE 2017 & E-Star)
Solve issues related toHFC Bans
Provide a sustainable long term solution
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Servicing Safety
Capital Investments
Challenges of R290
FLAMMABLE DEVELOPMENT RESOURCES
COMPONENTCOSTS
CERTIFICATION COSTS
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COMPONENTCOSTS
FLAMMABLE CERTIFICATION COSTS
Challenges of R290
DEVELOPMENT RESOURCESDEVELOPMENT
RESOURCES
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Converting Cabinet to R-290 Step 1
1
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RUN SYSTEMTO SEE RESULTS
4
R290HFC
CHARGE SYSTEMStart with 35% of original HFC charge or no more than 150g
3
Converting cabinet to R-2901
45
7
3
1 26
89
INSTRUMENT SYSTEM
Suction LineDischarge LineCondenser OutEvap InEvap Out
Temperatures Shell Slugs
PressureDischargeSuction
12345
67
89
2
+15%
R-404A R290 R-134a
-15/-35%
R-404A -> R290Displacement increase
R-134a -> R290Displacement decrease
SELECT THE PROPER COMPRESSOR & SWAPMatch capacity of existing compressor: +/- 5%
1
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ResultsStep 2
2
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Results2
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Converting Cabinet to R-290 Step 3
3
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RE-RUN TESTSAND READJUSTAS NEEDED
3
Adjust length and/or diameter of capillary tube
TXV: ¼ turn increments
Converting cabinet to R-2903
NOTE: adjusting refrigerant charge and cap tube length will fight with each other - Balance is critical (also for Energy efficiency)
EXPANSION DEVICE OPTIMIZATION
2
REFRIGERANT CHARGE DETERMINATIONIncrement the charge in 2-5g intervals
1
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Converting Cabinet to R-290 Step 4
4
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RE-RUN TESTS
3
SELECT A SMALLER INTERNAL VOLUME
CONDENSER
REDUCE TUBE DIAMETER
(e.g. ¼” tubes)
~30%REDUCTION
CAN BE EXPECTED
4 ISSUE: NOT ABLE TO ACHIEVE 150g CHARGE LIMIT
1
2
REDUCE THE INTERNAL VOLUME OF YOUR CIRCUIT
1
VOLUME REDUCTION SHOULD BE PURSUED ALSO ON THE EVAP, BUT THIS CAN HAVE IMPACT ON THE CAPACITY AND EFFICIENCY
2
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Examples of cabinet conversionAPPLICATION TYPE COOLER VERTICAL 25cu.ft FREEZER 7cu.ft ICE MAKER 100lb/day
Compressor Model EMT6160Z EMC3119U FFU130HAX EMC3130U NEK6181GK FFU160UAX
Compressor displ. [cm3] 6.76 4.5 10.61 6.93 7.28 7.95
Refrigerant R134a R290 R134a R290 R404A R290
Refr charge [g] 200g 70g 370 90 240 100
Energy Saving [%] +20% +32% +30%
Condenser volume [%] -20% = -50%
Evaporator volume [%] = = =
Exp device/mass flow [%] -15% TXV Cap tube. =
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COMPONENTCOSTS
FLAMMABLE CERTIFICATION COSTS
Challenges of R290
DEVELOPMENT RESOURCES COMPONENT
COSTS
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Fan Motors and blades
Miscellaneous Devices
Material Cost Impact
Non sparking type components1
2
3
4
Smaller heat exchangers >>> costs
Compressor cost
SwitchesLights
R-290 compressors can be a frame breakMultiple efficiency levels
Refrigerant cost tends to lower
~~
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BASELINE MAINTENANCECOST
UNITCOST
CABINET WITH R290
ENERGY CONSUMPTION
End-users TCO Breakdown
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Thank youQuestions