Caught On The Rise “Escalators chewing up dollars and sense” A Case Study by Kevin Chao, Sarah Oaks, Lee Rommes, & Sarah Thomas Valley River Center, Eugene, Oregon. March 19 th, 2007

Introduction  Escalators are a great convenience, but what do they cost us? For our case study, we explored how much time the mall escalators at the Valley River Center were being used, directly reflecting what percentage of the energy put into the escalator is wasted on a daily basis.

Precedent 12-hour use interval [$1.488/h (cooling) + $0.414 (motor)] x 12 hours = $ per day On a year $ per day x 365 = $8, Team Otis COOL TOOLS Dallas, TX January 27, 2007 A case study by: Walter Grondzik, Daniel Faoro, & Alison Kwok

Hypothesis  Constantly running escalators are not occupied during 50% of observed business hours, resulting in energy losses.

ECSers in Action!!!

General Information Energy Prices Monthly Service Charge$28.25 Demand Charge$5.00/kW Energy Charge$ /kWh (Commercial Energy Rate: Escalator Specifications Step Width32" Rise14' Motor5 HP (MEEB reference pg. 1472)

Data/Observations Minutes of Escalator Occupancy Date Time PeriodUp (min.) Down (min.) Thursday (3/8)4:15-5:15 PM13:2912:05 Friday (3/9)12:00-1:00 PM24:4428:21 Friday (3/9)1:00-2:00 PM26:5328:17 Saturday (3/10)3:30-3:40 PM31:2732:15 Sunday (3/11)3:10-4:10 PM25:4825:04 Sunday (3/11)4:47-5:47 PM13:0413:42

Analysis

Conclusion Escalator Resource Misappropriation UtilizedNot Utilized Money $735.52$1, Energy kWh kWh After reviewing the data, we have found that we met our hypothesis that the escalators were being used less than 50% of the time at the Valley River Center Mall; therefore the escalator is not properly designed for the space and wastes energy when not in use.

Thank You Team Otis; Walter Grondzik, Daniel Faoro, & Alison Kwok Ady Leverette

Question & Answer It’s that time again!