ETSU Cafeteria Kitchen Equipment Energy Audit

Scott Finney Emmitt Begley

4/24/2014

Background:

The sustainability department on campus at ETSU has been interested in creating a working relationship with the Aramark cafeteria staff for some time. Aramark is a tenant in the kitchen space on campus. Because of this, both the cost of energy consumed as well as the maintenance and replacement of kitchen equipment are the responsibility of East Tennessee State University. Aramark has an interest in the quality and upkeep of the kitchen equipment, while ETSU has an interest in reducing the energy consumption as well as the maintenance costs on equipment. Working together to find a balance between these two viewpoints will help solidify this relationship and could be extremely beneficial to both parties. This cafeteria audit was chosen as a project in order to help facilitate that relationship.

Findings:

During our initial tour of the space, we were able to take a comprehensive inventory of the appliances in the kitchen which use electricity as their main source of power (ignoring gas and steam powered appliances). Steam generators were included because they use electricity to create the steam that is used by the steam appliances. The data collected is attached to this report as the "Cafeteria Energy Audit Spreadsheet." While walking through the space, we also had a chance to speak with some of the employees in the kitchen spaces. The information provided by the users of the space helps us identify issues that may not be noticed during a walkthrough or may be overlooked by someone who doesn't physically use the space on a regular basis. This information will be discussed in the issues section.

Source: K. Moore

Source: K. Moore

Source: K. Moore

Source: K. Moore

Source: K. Moore

Source: K. Moore

Source: K. Moore

Source: K. Moore

The exhaust air fans are located outside on the roof of the building. These exhaust fans were inspected during a separate investigation. There are three exhaust fans on the roof which ventilate the exhaust hoods in the kitchen space.

Exhaust Air Fan Starter Panels

Source: S.Finney

Exhaust Air Fan Unit # ESR-7

Source: S.Finney

Exhaust Air Fan Unit # ESR-6

Source: S.Finney

Exhaust Air Fan Unit #14

Source: S.Finney

Issues:

There were several issues which were brought to our attention during our interview and walkthrough process. This section will identify all of the more pertinent issues that were discovered.

The toaster used is a commercial conveyor style device which continually runs during the day. This toaster uses approximately 2.4kWh of energy per day. It would be beneficial to replace this piece of equipment with one that is not constantly running. A four slot commercial toaster oven should prove to provide an almost immediate decrease in energy consumption.

Commercial Conveyor Toaster in question Source: K. Moore

The Exhaust Air Fans all run 24 hours a day, 365 days per year. The cafeteria staff had an issue with the fans not wanting to come back on. They were told to leave the fans on and that the fans wouldn't turn back on if they were shut off. We made contact with the facilities management staff in the University Center. Facilities has created a repair ticket for this problem and is in the process of remedying this issue. Once the starter motors have been repaired, facilities will be in contact with the Aramark staff to make sure that they are aware that there is no longer an issue with turning off these fans. Along with the benefit of reduced energy consumption, the university should see a reduction in the amount of conditioned air that is removed from the space during the less busy times of year.

Once the switch for the exhaust air fans has been repaired, the fans can be turned off overnight and on breaks. Shutting the equipment down during these times will net approximately $2300 in energy savings for the university.

Date: Auditor: Location:

ETSU Energy Right Solutions for Higher Education

Energy Audit

Date of Energy Usage Avg Daily UseType Manufacturer Model Manufacture (Watts) (Hours)

Heated Cabinet TRUE TA1H-1-S 2000 Pizza 0 0 No Plug on Cord

Pizza Oven Hood Giles Enterprises PO-VH Jul-09 920 Pizza 13.5 12420

Pizza Oven Lincoln 1130-000-U-K1837 10000 Pizza 13.5 270000 Impinger

Heated Cabinet TRUE TA2H-2-S 4000 Pizza 13.5 54000

Fridge TRUE T-49 115 6.1 701.5 Pizza 24 16836

Heat Lamp Halo L-Series 250 Pizza 13.5 13500

Pizza Hot Plate Hatco Corp GRSR-17 350 Pizza 13.5 18900

Refrigerated Prep Table

Randell 9110AM 115 6.5 747.5 Pizza 24 17940

Coffee Maker Bunn CWTF-APS DV.5HL 1370 Beverage 1 24 32880

Cremer Dispenser Creamiser Products 225 Sep-13 110 2.8 308 Beverage 1 24 7392

Milk Dispenser Silver King SK15MAJ 115 1.6 184 Beverage 1 24 4416

Iced Tea Dispenser Curtis TCTS10067 1650 Beverage 1 24 39600

Soda Machine Lancer 4500 115 3.6 414 Beverage 2 24 9936

Soda Machine Cornelius Inc DF200BC Aug-04 115 3.5 402.5 Beverage 2 24 9660

Juice Dispenser Lancer 1500 115 7.8 897 Beverage 2 24 21528

Under Counter Fridge TRUE TUC-48-LP 115 6.4 736 Salad Bar 24 17664

Soup Dispenser 120 7.5 900 Salad Bar 13.5 24300 Power consumption is an educated guess to complete energy use data for the marketplace

Under Counter Fridge TRUE TUC-27-LP 115 3.9 448.5 Fajitas 24 10764

Warming Plate CookTek MCB-1800 1800 Fajitas 13.5 48600

Water Heater Listed EIF6US017B 1650 Fajitas 24 39600

Fridge TRUE T49 115 9.1 1046.5 Dessert 24 25116

Toast Master Nu-Vu OP-4/8A 208 25 5200 Dessert 13.5 70200 "Proofer" - Two ovens in one. Bottom one makes yeast rise. Top one Convection Oven

Condition/ProblemsLocation NotesVoltage Amperage Daily Power Consumption

Equipment

Fan ID Number

Unit Tag Model Horsepower Voltage Amperage Energy Use (Watts)

Average Daily Use

(Hours)

3 ESR-7 NCA24FA 5.000 460 6.4 2944 242 ESR-6 NCA24HPFA 3.000 460 4.7 2162 241 #14 NCA16FA 0.750 208 6.0 1248 24

152496 Wh152.496 kWh

55508.544 kWh

Fan ID Number

Unit Tag Model Horsepower Voltage Amperage Energy Use (Watts)

Average Daily Use

(Hours)

3 ESR-7 NCA24FA 5.000 460 6.4 2944 142 ESR-6 NCA24HPFA 3.000 460 4.7 2162 141 #14 NCA16FA 0.750 208 6.0 1248 14

88956 Wh88.956 kWh

32379.984 kWh

23128.56 kWh

Energy Cost - BEFORE Starter Motor Repair

Based on a 14 hour kitchen work day (5am - 7pm)

Based on the ventilation fans running 24 hours per day

41216

Total Daily Power Consumption

Total Yearly Power Consumption

Yearly Energy Cost (@$0.10/kWh)

3026817472

Yearly Energy Savings via Starter Motor Repair2,312.86$

Daily Power Consumption (Watt

Hours)

Daily Power Consumption (Watt

Hours)

3,238.00$

5,550.85$

299525188870656

Total Daily Power Consumption

Total Yearly Power Consumption

Yearly Energy Cost (@$0.10/kWh)

Energy Cost - AFTER Starter Motor Repair