ReRev Technology in the Wake Forest Gym
The installation of ReRev technology at Wake Forest would cost the school around $32,000 for a thirty-five unit system (Johansen). There are thirty-six self-powered machines in the gym currently; however, no more than one stair stepper was used at a time, so it is assumed that a unit is not installed on that stair stepper. It is important to realize that this price is just an estimate. If this technology is something the school seriously wants to consider, they can fill out and turn in a ReRev facility assessment to the company for an exact quote.
The potential energy production of the systems is now determined. Using the chart of equipment usage from earlier, the number of hours of self-powered equipment use is determined for Wednesday, March 28, 2012. Below is the table that shows the amount of hours for Wednesday, March 28, 2012.
Next, a chart is shown below that demonstrates how many kilowatt hours can be produced by a ReRev system in the Wake Forest gym. Ratios are used again to determine the number of hours the equipment is used in a week.
Based on the findings from above, this system would produce approximately 12.6 percent of the energy consumed by treadmills and stair masters on a weekly basis. It can also now be calculated how much it would save the school. In the state of North Carolina, each kilowatt hour costs $.0843 (North Carolina). The next calculations calculate the amount of money Wake would save each week, and the amount of time it would take to pay the system off.
102.2 kWh x $.0843 = approx. $8.62 per week
52 weeks in a year x $8.62 = $448.24 per year
$32,000 (approx. total cost of the system)/$448.24 = approx. 71.4 years to pay off the system
It is important to realize that based on this finding the school will pay off the system in a little over seventy-one years, but at the same time it will still be paying for energy use in the gym. At this time, the largest ReRev system that the Wake Forest gym could install does not produce enough energy to fully power the non-self-powered pieces of exercise equipment or the energy usage of the lights, televisions, and fans in the building.
102.2 kWh x $.0843 = approx. $8.62 per week
52 weeks in a year x $8.62 = $448.24 per year
$32,000 (approx. total cost of the system)/$448.24 = approx. 71.4 years to pay off the system
It is important to realize that based on this finding the school will pay off the system in a little over seventy-one years, but at the same time it will still be paying for energy use in the gym. At this time, the largest ReRev system that the Wake Forest gym could install does not produce enough energy to fully power the non-self-powered pieces of exercise equipment or the energy usage of the lights, televisions, and fans in the building.