Innovation in Low Charge, Packaged Ammonia Refrigeration · Innovation in Low Charge, Packaged...
Transcript of Innovation in Low Charge, Packaged Ammonia Refrigeration · Innovation in Low Charge, Packaged...
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Innovation in Low Charge, Packaged Ammonia Refrigeration
Dr. Robert Lamb Group Sales & Marketing Director
Star Refrigeration Ltd
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Introduction
Case Study 3 Background
Case Study 2 Case Study 1
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Customer Challenges
Corporate and social responsibility
HCFC phase out/HFC phase down
Energy consumption
Capital cost
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Ammonia Challenges
Health & Safety - PSM
Refrigerant Charge - <10,000lb
Technology
Education
Regulation – OSHA, EPA, USDOT…
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Packaged Ammonia Concept
Plug and play
Low charge
Factory packaged and tested
Optimised energy efficiency
Totally natural fluid
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Case Study 1: Cold Storage
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Case Study 1: Cold Storage
Customer Soup & Sauce Manufacturer
Project type R22 phase out
Application: Cold Storage
Store size: 10,764ft2
Store temperature: -13!F
Cooling Load: 36TR
Solution: 1 x Azanefreezer
Charge: 522lb
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Innovation: Low Charge, Low Pressure Ammonia
Low Pressure Receiver
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Innovation: Low Charge, Low Pressure Ammonia
Air Cooler
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Innovation: Low Charge, Low Pressure Ammonia
Compressor
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Innovation: Low Charge, Low Pressure Ammonia
Condenser
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Innovation: Low Charge, Low Pressure Ammonia
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Innovation: Reverse Cycle Defrost
Reverses plant operation
Single 4-way ball valve
Electrically actuated
Rapid defrost
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Innovation: Reverse Cycle Defrost
Condenser
Four Way Valve
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Innovation: Reverse Cycle Defrost
Condenser
Four Way Valve
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Innovation: Aluminum Coil
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Package Design
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Energy and Cost Comparison
System Suction Temperature
Running Cost (vs pump circ)
Capital Cost (vs pump circ)
Refrigerant Charge
Pumped Circulation
-27.4°F 0% 0% 746lb
DX (HFC) -31.0°F +20% -25% 500lb
LPR -23.8°F -5% -15% 522lb
Based on -13°F store temperature
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Case Study 2: Food Production
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Case Study 2: Food Production
Customer Bakery
Project type Factory extension
Application: Spiral Freezer
Product throughput 4,000 lb/hr
Evaporation temperature
-40°F
Cooling Capacity: 56 TR
Equipment : 1 x Glacier
Charge: 838 lb
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Innovation - LPR
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Innovation - Aluminum Coil and RCD
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Package Design
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Energy and Cost Comparison
System Suction Temperature
Running Cost (vs pump circ)
Capital Cost (vs pump circ)
Refrigerant Charge
Pumped Circulation
-43.6°F 0% 0% 2,222lb
DX (HFC) -47.2°F +20% -25% 891lb
LPR -41.5°F -5% -15% 838lb
Based on -29.2°F air temperature
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Case Study 3: HVAC
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Case Study 3: HVAC
Customer Retail
Project Type New store
Application: Retail Store HVAC
Secondary fluid: +42.8!F
Cooling Capacity: 160TR
Equipment 1 x Azanechiller
Charge: 353lb
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Packaged Ammonia Chiller
Low Pressure Receiver with
Liquid Subcoolers
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Package Design
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Energy and Cost Comparison
System Suction Temperature
Running Cost (vs DX)
Capital Cost (vs DX)
Refrigerant Charge
DX (HFC) 33.8°F 0% 0% 360lb
LPR 35.6°F -24% 200% 353lb
Based on 42.8°F water temperature
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Summary
• Packaged ammonia system help reduce • Cost • Charge
• 50% to 75% reduction in charge possible
• 20% to 25% reduction in energy consumption
• Wide range of applications • Cold storage • Food manufacturing • HVAC • Process cooling
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