Grocery stores and restaurants spend a large portion of their energy costs on refrigeration systems. Refrigeration makes up over 50% of energy costs for large grocery stores and about 15% for restaurants. Common refrigeration applications in the commercial sector include grocery store refrigeration systems, beverage merchandisers, reach-in refrigerators and freezers, refrigerated vending machines, and walk-in coolers and freezers. The document outlines opportunities for improving the energy efficiency of these refrigeration systems through various measures and technologies.
Everything You Need to Know About RefrigerationSarah Zall
Interested in an energy efficiency upgrade for your business, but don't know how the technology works? We've got you covered with our 2 Minute Technology series! If you have a commercial refrigeration system that's not energy efficient, you're probably spending A LOT of money to keep it running. You can significantly reduce operating costs with these major money-saving upgrades.
The document provides an overview and instructions for a Refrigeration Safety Awareness certification training program in British Columbia. The program covers refrigeration safety legislation, systems, procedures, and equipment through online multimedia presentations, a textbook, and quizzes. Upon successful completion of the four sections and final exam, participants will receive a BCIT certificate and be prepared to write the provincial Refrigeration Safety Awareness examination. The goal is to educate employees on operating refrigeration plants safely.
Major project part 2 ADVANCE MULTITASKING REFRIGERATION SYSTEMshaanmonu
This document presents a project on an Advanced Multitasking Refrigeration System (AMRS) developed by four students under faculty guidance. The AMRS uses vapor compression refrigeration to provide cooling and utilizes waste heat from the condenser for heating. It can perform four tasks simultaneously - refrigeration, heating, water cooling, and room cooling. By integrating multiple functions into one system, the AMRS provides these capabilities more economically than separate appliances. The students worked with their guides to address various design challenges during the project's development.
This document provides information on training courses offered by MCD Training Centre's Refrigeration & Air-Conditioning department in 2015. It lists multiple 10-day and 5-day courses on topics like basic and advanced refrigeration, electrical training, welding, and first aid. The courses are offered on various dates throughout the year and have costs ranging from R3500 to R7500. Contact information is provided for Jannie Kotze to inquire about scheduled courses and availability.
Food preservation by refrigeration and air conditioningAKSHAY PATHANIA
This document discusses refrigeration and air conditioning systems for food preservation. It begins by defining food preservation as retaining food for a period of time without contamination or loss of quality. Refrigeration systems preserve foods by using low temperatures to eliminate spoilage agents. Domestic refrigerators provide temporary storage between 0-4°C, while commercial refrigerators like walk-in coolers and display cases are used for short-term storage in grocery stores and restaurants. Cold storage facilities store foods above freezing for 1-15 days, considering factors like temperature, humidity and mixed storage. Frozen storage preserves foods long-term at -15°C or below by methods like air blast or immersion freezing.
Refrigeration and-air-conditioning-by-iit-kgpOlumide Daniel
Natural refrigeration methods have been used for centuries and include:
1) Transporting ice from colder regions or harvesting ice in winter and storing it for summer use in insulated ice houses.
2) Producing ice at night by exposing water to the cold night sky through radiation cooling.
3) Evaporative cooling methods like storing water in porous earthen pots or using wet straw mats.
4) Cooling water by dissolving salts in it, which causes an endothermic reaction that lowers the temperature.
Artificial refrigeration methods developed more recently include:
1) Vapour compression systems used initially for domestic refrigeration and later for air conditioning.
2) Vap
The document is a chapter outline for a textbook on refrigeration fundamentals. It lists 10 main topics that will be covered in the book, including thermodynamics, heat and work, thermodynamic properties of substances, liquid-vapor properties of pure substances, P-V-T behavior of gases, thermodynamic processes, heat transfer, refrigeration cycles, multi-pressure refrigeration systems, and direct expansion and chilled water systems. Each topic is further broken down into sections and subsections that provide more detail on the information that will be presented.
Everything You Need to Know About RefrigerationSarah Zall
Interested in an energy efficiency upgrade for your business, but don't know how the technology works? We've got you covered with our 2 Minute Technology series! If you have a commercial refrigeration system that's not energy efficient, you're probably spending A LOT of money to keep it running. You can significantly reduce operating costs with these major money-saving upgrades.
The document provides an overview and instructions for a Refrigeration Safety Awareness certification training program in British Columbia. The program covers refrigeration safety legislation, systems, procedures, and equipment through online multimedia presentations, a textbook, and quizzes. Upon successful completion of the four sections and final exam, participants will receive a BCIT certificate and be prepared to write the provincial Refrigeration Safety Awareness examination. The goal is to educate employees on operating refrigeration plants safely.
Major project part 2 ADVANCE MULTITASKING REFRIGERATION SYSTEMshaanmonu
This document presents a project on an Advanced Multitasking Refrigeration System (AMRS) developed by four students under faculty guidance. The AMRS uses vapor compression refrigeration to provide cooling and utilizes waste heat from the condenser for heating. It can perform four tasks simultaneously - refrigeration, heating, water cooling, and room cooling. By integrating multiple functions into one system, the AMRS provides these capabilities more economically than separate appliances. The students worked with their guides to address various design challenges during the project's development.
This document provides information on training courses offered by MCD Training Centre's Refrigeration & Air-Conditioning department in 2015. It lists multiple 10-day and 5-day courses on topics like basic and advanced refrigeration, electrical training, welding, and first aid. The courses are offered on various dates throughout the year and have costs ranging from R3500 to R7500. Contact information is provided for Jannie Kotze to inquire about scheduled courses and availability.
Food preservation by refrigeration and air conditioningAKSHAY PATHANIA
This document discusses refrigeration and air conditioning systems for food preservation. It begins by defining food preservation as retaining food for a period of time without contamination or loss of quality. Refrigeration systems preserve foods by using low temperatures to eliminate spoilage agents. Domestic refrigerators provide temporary storage between 0-4°C, while commercial refrigerators like walk-in coolers and display cases are used for short-term storage in grocery stores and restaurants. Cold storage facilities store foods above freezing for 1-15 days, considering factors like temperature, humidity and mixed storage. Frozen storage preserves foods long-term at -15°C or below by methods like air blast or immersion freezing.
Refrigeration and-air-conditioning-by-iit-kgpOlumide Daniel
Natural refrigeration methods have been used for centuries and include:
1) Transporting ice from colder regions or harvesting ice in winter and storing it for summer use in insulated ice houses.
2) Producing ice at night by exposing water to the cold night sky through radiation cooling.
3) Evaporative cooling methods like storing water in porous earthen pots or using wet straw mats.
4) Cooling water by dissolving salts in it, which causes an endothermic reaction that lowers the temperature.
Artificial refrigeration methods developed more recently include:
1) Vapour compression systems used initially for domestic refrigeration and later for air conditioning.
2) Vap
The document is a chapter outline for a textbook on refrigeration fundamentals. It lists 10 main topics that will be covered in the book, including thermodynamics, heat and work, thermodynamic properties of substances, liquid-vapor properties of pure substances, P-V-T behavior of gases, thermodynamic processes, heat transfer, refrigeration cycles, multi-pressure refrigeration systems, and direct expansion and chilled water systems. Each topic is further broken down into sections and subsections that provide more detail on the information that will be presented.
This document discusses cold chain logistics in the food sector. It defines cold chain logistics as temperature controlled supply chain used to extend the shelf life of perishable products like food. It then discusses the need for cold chain logistics in food sector to make products available throughout the year. As an example, it explains how cold chain logistics helps make potatoes available year-round despite being harvested only one month per year. The document also presents a case study of a gourmet food store that uses cold chain logistics to import and store premium cheeses and meats at controlled temperatures from warehouse to refrigerated display.
The document discusses the simple vapor compression refrigeration system. It begins by defining what a vapor compression refrigeration system is and why they are needed over other refrigeration systems. It then outlines the basic mechanism and components of a simple vapor compression refrigeration cycle, including the compressor, condenser, expansion device, and evaporator. Finally, it discusses factors that affect the system's coefficient of performance and lists some advantages and disadvantages.
The document summarizes Ganesh Pralhad Bharambe's seminar on magnetic refrigeration presented under the guidance of Prof. A. M. Patil. It discusses the basic principles of magnetic refrigeration, the thermodynamic cycle involved, suitable working materials including developments in materials science, and applications of the technology.
Fundamentals of Practical Building Automation SystemsLiving Online
The document discusses building automation systems (BAS), which use computerized networks of electronic devices to monitor and control buildings' lighting, climate, security, and other systems. A BAS includes sensors, controllers, actuators and software that work together to efficiently manage energy usage while maintaining occupant comfort. Implementing BAS can reduce both capital and operating costs over a building's lifespan through energy savings, standardized maintenance, and integrated emergency response.
This document discusses magnetic refrigeration, which provides cooling through the magnetocaloric effect. It begins by introducing magnetic refrigeration and the magnetocaloric effect. It then covers the basic principles and mechanism of magnetic refrigeration, including the thermodynamic cycle and components required. Potential magnetocaloric materials are discussed. Applications for magnetic refrigeration include household appliances, buildings, transportation, food storage, and electronics cooling. Benefits include higher efficiency and lower environmental impact compared to traditional refrigeration. Further research is still needed to improve temperature changes and develop stronger permanent magnets for widespread commercial use.
This document provides information on refrigeration and air conditioning. It defines refrigeration as the process of transferring heat from a low temperature region to a high temperature region. The key components and working principles of vapor compression and vapor absorption refrigeration systems are described. It also discusses terms used in air conditioning like dry bulb temperature, wet bulb temperature, and relative humidity. The layout and working of a basic window room air conditioner is explained. Domestic refrigerators like single door, two-door, and their components are outlined.
Ship refrigeration plants play a vital role in transporting perishable cargo by maintaining the appropriate temperatures. The main components of refrigeration plants include compressors, condensers, receivers, driers, expansion valves, evaporators, and control units. Refrigeration plants use the vapor compression cycle to remove heat from cargo holds or crew areas, circulating a refrigerant through the components to absorb, compress, condense, expand, and evaporate heat.
This document provides an overview of a training session on energy equipment refrigeration and air conditioning systems. It discusses types of refrigeration including vapor compression and vapor absorption. It also covers assessing the performance of refrigeration and air conditioning systems, such as measuring tons of refrigeration and coefficient of performance. Finally, it lists several energy efficiency opportunities for refrigeration and AC systems, such as optimizing heat exchange, multi-staging systems, and capacity control of compressors.
This document contains a summary of a presentation on best practices in maintenance and reliability by Ricky Smith. It discusses key topics like reliability definitions, failure patterns, predictive maintenance, FRACAS systems, and reliability metrics. It emphasizes that most equipment failures are self-induced due to issues like improper installation, maintenance, or lubrication. It also outlines steps for improving reliability like prioritizing assets, identifying maintenance strategies, and using failure data for continuous improvement. The goal is to move from reactive to proactive maintenance through practices like condition monitoring and root cause analysis.
The document discusses a water treatment seminar that covers properties of water, pH, chiller and cooling tower operation, and common problems in cooling tower water like scale, corrosion, fouling, and microbiological fouling. It explains how water treatment chemicals can prevent scale through crystal distortion and dispersancy, and inhibit corrosion through the formation of protective films on metal surfaces. Proper bleed-off is also important to control mineral concentrations and prevent scale formation.
The document discusses building maintenance from a civil engineer's perspective. It provides an overview of aspects engineers should consider at different stages, from design to planning maintenance. Key points include:
- Maintenance planning should start at the design stage to prevent defects and reduce long-term costs. Factors like material selection and accessibility for maintenance are important.
- Developing a maintenance plan and budget helps maintain asset value systematically rather than through ad-hoc repairs. Regular inspections and record-keeping are important.
- Building defects can arise from design failures, construction issues, or material problems. Understanding defect causes allows for better maintenance management.
This document discusses cold chain logistics in the food sector. It defines cold chain logistics as temperature controlled supply chain used to extend the shelf life of perishable products like food. It then discusses the need for cold chain logistics in food sector to make products available throughout the year. As an example, it explains how cold chain logistics helps make potatoes available year-round despite being harvested only one month per year. The document also presents a case study of a gourmet food store that uses cold chain logistics to import and store premium cheeses and meats at controlled temperatures from warehouse to refrigerated display.
The document discusses the simple vapor compression refrigeration system. It begins by defining what a vapor compression refrigeration system is and why they are needed over other refrigeration systems. It then outlines the basic mechanism and components of a simple vapor compression refrigeration cycle, including the compressor, condenser, expansion device, and evaporator. Finally, it discusses factors that affect the system's coefficient of performance and lists some advantages and disadvantages.
The document summarizes Ganesh Pralhad Bharambe's seminar on magnetic refrigeration presented under the guidance of Prof. A. M. Patil. It discusses the basic principles of magnetic refrigeration, the thermodynamic cycle involved, suitable working materials including developments in materials science, and applications of the technology.
Fundamentals of Practical Building Automation SystemsLiving Online
The document discusses building automation systems (BAS), which use computerized networks of electronic devices to monitor and control buildings' lighting, climate, security, and other systems. A BAS includes sensors, controllers, actuators and software that work together to efficiently manage energy usage while maintaining occupant comfort. Implementing BAS can reduce both capital and operating costs over a building's lifespan through energy savings, standardized maintenance, and integrated emergency response.
This document discusses magnetic refrigeration, which provides cooling through the magnetocaloric effect. It begins by introducing magnetic refrigeration and the magnetocaloric effect. It then covers the basic principles and mechanism of magnetic refrigeration, including the thermodynamic cycle and components required. Potential magnetocaloric materials are discussed. Applications for magnetic refrigeration include household appliances, buildings, transportation, food storage, and electronics cooling. Benefits include higher efficiency and lower environmental impact compared to traditional refrigeration. Further research is still needed to improve temperature changes and develop stronger permanent magnets for widespread commercial use.
This document provides information on refrigeration and air conditioning. It defines refrigeration as the process of transferring heat from a low temperature region to a high temperature region. The key components and working principles of vapor compression and vapor absorption refrigeration systems are described. It also discusses terms used in air conditioning like dry bulb temperature, wet bulb temperature, and relative humidity. The layout and working of a basic window room air conditioner is explained. Domestic refrigerators like single door, two-door, and their components are outlined.
Ship refrigeration plants play a vital role in transporting perishable cargo by maintaining the appropriate temperatures. The main components of refrigeration plants include compressors, condensers, receivers, driers, expansion valves, evaporators, and control units. Refrigeration plants use the vapor compression cycle to remove heat from cargo holds or crew areas, circulating a refrigerant through the components to absorb, compress, condense, expand, and evaporate heat.
This document provides an overview of a training session on energy equipment refrigeration and air conditioning systems. It discusses types of refrigeration including vapor compression and vapor absorption. It also covers assessing the performance of refrigeration and air conditioning systems, such as measuring tons of refrigeration and coefficient of performance. Finally, it lists several energy efficiency opportunities for refrigeration and AC systems, such as optimizing heat exchange, multi-staging systems, and capacity control of compressors.
This document contains a summary of a presentation on best practices in maintenance and reliability by Ricky Smith. It discusses key topics like reliability definitions, failure patterns, predictive maintenance, FRACAS systems, and reliability metrics. It emphasizes that most equipment failures are self-induced due to issues like improper installation, maintenance, or lubrication. It also outlines steps for improving reliability like prioritizing assets, identifying maintenance strategies, and using failure data for continuous improvement. The goal is to move from reactive to proactive maintenance through practices like condition monitoring and root cause analysis.
The document discusses a water treatment seminar that covers properties of water, pH, chiller and cooling tower operation, and common problems in cooling tower water like scale, corrosion, fouling, and microbiological fouling. It explains how water treatment chemicals can prevent scale through crystal distortion and dispersancy, and inhibit corrosion through the formation of protective films on metal surfaces. Proper bleed-off is also important to control mineral concentrations and prevent scale formation.
The document discusses building maintenance from a civil engineer's perspective. It provides an overview of aspects engineers should consider at different stages, from design to planning maintenance. Key points include:
- Maintenance planning should start at the design stage to prevent defects and reduce long-term costs. Factors like material selection and accessibility for maintenance are important.
- Developing a maintenance plan and budget helps maintain asset value systematically rather than through ad-hoc repairs. Regular inspections and record-keeping are important.
- Building defects can arise from design failures, construction issues, or material problems. Understanding defect causes allows for better maintenance management.
1. Grocery stores and restaurants spend a large portion of their energy dollars on refrigeration – about 15 percent for a
restaurant and more than 50 percent for a large grocery. Typical refrigeration energy costs for restaurants and grocery
stores in the Phoenix area are shown in the table below.1
Refrigeration Applications and Energy Savings Potential
Refrigeration applications in the commercial sector involve a wide range of technologies from stand-alone residential-
type refrigerators to large central supermarket refrigeration
systems. The most common refrigeration applications include: Annual Refrigeration Electricity Cost
• Grocery store refrigeration systems – Grocery store Annual Cost
systems have two distinct components: 1) the display Facility Type Per Square
cases, and 2) the central refrigeration system including Foot
mechanical equipment and controls. Grocery stores Sit-down Restaurant $0.46
account for about one third of refrigeration energy use. Fast-service Restaurant $1.04
Small Grocery $1.42
• Beverage merchandisers – Beverage merchandisers Large Grocery $2.20
consume about five percent of overall refrigeration energy.
• Reach-in refrigerators and freezers – Reach-in
refrigerators and freezers account for about 12
percent of refrigeration energy use overall. Commercial Refrigeration Energy Use
• Refrigerated vending machines – Refrigerated Ice machines
vending machines consume about 13 percent of 10%
Supermarket
commercial sector refrigeration energy use. display cases
Refrigerated
• Walk-in coolers and freezers – Walk-in coolers vending machines
34%
13%
and freezers account for about 18 percent of
refrigeration energy use. Reach-in
• Ice machines – Ice making accounts for about 10 refrigerators
5%
percent of refrigeration energy use.
Reach-in freezers
• Other applications – Commercial refrigeration 7%
also includes a wide range of other miscellaneous Beverage
merchandisers
applications including water coolers, non- 5%
Walk-ins
18%
beverage merchandisers and residential grade Other
8%
refrigerator/freezer combinations. This segment of
the market uses about eight percent of
refrigeration energy use.
The chart presents a breakdown of energy use in the commercial sector for these refrigeration applications. Significant
opportunities exist for energy efficiency improvements in commercial refrigeration. Estimates of the overall cost-
effective energy savings potential for each of these technologies are provided in the following table. The savings
1
APS study of energy use in commercial buildings in the Phoenix area.
1
2. potential estimate is for a combination of energy efficiency improvements for each technology with payback in five
years or less.2
Cost-effective Refrigeration Energy Savings Potential
Energy Savings
Technology
Potential
Grocery store systems 14%
Beverage merchandisers 45%
Reach-in refrigerators 50%
Reach-in freezers 40%
Refrigerated vending machines 42%
Walk-in coolers and freezers 32%
Ice machines 20%
Refrigeration Energy Efficiency Measures
Opportunities for saving energy and reducing energy costs for refrigeration systems will depend on the particular
application. The table below shows the application of selected energy efficiency measures to different refrigeration
technologies. A brief description of each opportunity is included below.
Refrigeration Energy Efficiency Measures
vending machines
cases and systems
Reach-in freezers
Grocery display
Walk-in coolers
merchandisers
Ice machines
refrigerators
Refrigerated
and freezers
Beverage
Reach-in
Energy Efficiency Measure
High-efficiency evaporator fan motors ✔ ✔ ✔ ✔ ✔ ✔ ✔
High-efficiency condenser fan motors ✔ ✔ ✔ ✔ ✔ ✔ ✔
High-efficiency compressor systems ✔ ✔ ✔ ✔ ✔ ✔ ✔
Floating head pressure controls ✔ ✔
Liquid pressure amplifiers ✔ ✔
Anti-sweat heater controls ✔ ✔ ✔ ✔
Defrost controls ✔ ✔ ✔
Evaporative condensers ✔
Ambient subcooling ✔ ✔
Mechanical subcooling ✔
Heat recovery ✔
Energy-efficient reach-ins ✔ ✔
Add doors to display cases ✔
Efficient lighting ✔ ✔ ✔ ✔ ✔ ✔
High-efficiency evaporator fan motors – These small fans are typically less than one-tenth of a horsepower. A grocery
store can have hundreds of them, so their energy consumption can be significant. Specifying high-efficiency motors for
evaporator fans is almost always a good investment, and they can also be implemented on a retrofit basis. Energy savings
are estimated to be about 2 percent of refrigeration system electricity use for reach-in freezers, 7 percent for reach-in
2
Energy Savings Potential for Commercial Refrigeration Equipment, U.S. DOE, 1996.
2
3. refrigerators, 8 percent for grocery store display cases, 5 percent for ice machines, 14 percent for vending machines, and
29 percent for beverage merchandisers.3
High-efficiency condenser fan motors – Specifying high-efficiency motors on condenser fans is also a good idea.
System energy savings estimates are in the 3 to 5 percent range.
High-efficiency compressor systems – Energy savings potential for high-efficiency compressors are estimated to be 6
percent for ice machines, 9 percent for vending machines and beverage merchandisers, 12 percent for reach-in
refrigerators, and 16 percent for reach-in freezers.
Floating head pressure controls – Floating head pressure controls allow compressor head pressures to vary with outdoor
conditions. This saves energy dollars and helps refrigeration equipment to last longer. Floating head pressure controls are
often standard features on new systems; however, they can be retrofitted as well. Estimated savings range from three to 10
percent for grocery store systems.
Liquid pressure amplifiers –Liquid pressure amplifiers are small refrigerant pumps that raise liquid line pressure to
increase system efficiency. For systems with air-cooled condensers, the lower the outdoor air temperature, the greater the
efficiency gain. Energy savings can be up to 20 percent4.
Anti-sweat heater controls – Anti-sweat heaters are electric heaters installed in virtually all low temperature and many
medium temperature display cases to keep their external surfaces free of condensation during high humidity conditions.
Typically they are on all the time. Anti-sweat heater controls sense store humidity conditions and turn the heaters off
when they are not needed. Energy savings estimates range from about six percent for grocery store display cases to 14
percent for reach-in freezers and 20 percent for reach-in refrigerators.
Defrost controls – Energy-efficient defrost systems improve the operation of the defrost cycle. The most effective
controls are called demand controls which initiate defrosting in a variety of ways such as measuring the temperature or
pressure drop across the evaporator, measuring frost accumulation and sensing humidity. All of these methods, if used
properly, are more effective than using a simple timer clock to initiate defrosting. Energy savings estimates range from
about one percent to six percent of refrigeration system energy use.
Evaporative condensers – Most refrigeration systems use air-cooled condensers to expel heat. Evaporative condensers
use a wetted filter to cool ambient air as it enters the condenser increasing its ability to reject heat. Energy savings
estimates range from about three percent to nine percent for grocery store refrigeration systems.
Ambient subcooling – Ambient subcooling involves the use of an oversized condenser or an additional heat exchanger to
subcool liquid refrigerant. Savings estimates range from about one percent for grocery store systems to about nine percent
for walk-in coolers.
Mechanical subcooling – Mechanical subcooling is an effective method of cooling liquid refrigerant below its saturation
pressure in order to increase system capacity and improve efficiency. Energy savings are estimated to be as much as 25
percent for grocery store refrigeration systems.
Heat recovery – Heat recovery systems use heat removed from display cases to heat water. The amount of water that can
be heated will depend on the situation. However, a 7.5 hp compressor can supply close to 100 percent5 of the hot water
requirements in a medium-sized grocery store all year long.
Energy-efficient case lighting – T-8 fluorescent lamps and electronic ballasts are often used in new energy-efficient
cases and can be retrofitted in existing cases as well. These high efficiency fixtures reduce lighting energy use and reduce
the cooling load on the compressor. Energy savings potential is estimated to be about 10 percent for beverage
merchandisers.
Add doors to display cases – Glass doors on open multi-deck display cases can reduce compressor energy costs, reduce
cold air spillage and increase store comfort conditions. Doors can often be added to existing cases as a retrofit. Savings
are estimated to be as high as 50 percent, and paybacks will typically be in the range of one to two years for retrofits. 6
However, installing doors can cause the compressor system to be oversized so be sure to get assistance from a
refrigeration professional when conducting a retrofit.
3
Energy Savings Potential for Commercial Refrigeration Equipment, U.S. DOE, 1996.
4
Source: HY-SAVE Inc.
5
Source: The Commercial Refrigerator Manufacturers Association’s “Recommended Guidelines for Retail Food Store Design”, 1/79
6
Source: Energy saving data in this paragraph taken from PG&E Application Note No. 53-43-82, 1982
3
4. Energy-efficient reach-in refrigerators – When purchasing a new residential-grade refrigerator look for equipment with
the EPA’s Energy Star® logo. Units that have earned the Energy Star logo use at least 30 percent less energy than
required by federal government standards. Side-by-side refrigerator/freezers use significantly more energy than those with
the freezer above the refrigerator. Use the EnergyGuide label on new refrigerators to select the most efficient model.
Operating and maintenance efficiency measures – Operating and maintenance practices can also significantly improve
the efficiency of refrigeration systems. Clean cooling coils several times a year and make sure outdoor coils are shaded
from the sun and have good air circulation around them. Make sure the doors on your freezers, refrigerators and display
cases seal tightly, and repair any damaged door seals.
For More Information on Energy-efficient Refrigeration Systems
Check out the Web sites of the Association of Energy Engineers, the U.S. Department of Energy’s Energy Efficiency and
Renewable Energy Network (EREN), the American Society of Heating, Refrigerating and Air-Conditioning Engineers,
Inc (ASHRAE), the Air-Conditioning & Refrigeration Institute (ARI), the Commercial Refrigerator Manufacturers
Association and the American Council for an Energy-Efficient Economy (ACEEE).
For general information regarding electric service for your business, call the APS Business Center at 602-371-6767 or 1-
800-253-9407. For an online analysis of your business energy use visit the APS Web site and take the Energy Survey at
http://www.aps.com/aps_services/energysurvey/Default_BUSRES.html?type=b.
4