POUNCE Solutions: Energy Managers and Consultants


“I really like the ability to help my customers without having to be on site every time.”


Problem
– Improve control of coffee makers to reduce wasted energy.
Scenario
– Coffee makers were wired through external timers to turn on at 6am in order for the water to be hot by 7am.
Analysis
– Examining the power waveforms captured by the device, the water was heated to temperature within 6 to 10 minutes.
Solution
– Timers and old-fashioned wall outlets were replaced. The POUNCE® outlets were programmed to turn on by the motion detected at the outlets and at the POUNCE® switches that also controlled the room lighting.
- The water heated up while the old coffee grinds and filter were replaced.
Benefits
– Energy was saved not only for the extra hour in the morning, but for rooms where nobody used them for days or hours.
Additional Benefits
– All of the coffee makers were programmed to turn on at the same time. They used about 1800 watts when first turned on. Together, they contributed nearly 11,000 (11kW) to the peak load at 6am.
- The randomness of using occupancy to turn on the coffee makers helps to reduce the peak demand charge on the customer’s electric bill.

 


Peak Demand
–A charge added to a commercial electric bill that is based on the peak power consumed over the billed month. The example bill shows a total rate of $9.90 per kW of demand.
Problem
–Peak demand charges contribute about 20% to the client’s commercial electric bill.
Scenario
–Eight different coffee makers and water coolers/heaters were all programmed to turn on at 6am.
Analysis
–The total load at 6am was nearly 10kW. At the rate on the example bill, this contribution adds about $99.00 for the month.
Solution
–The loads were staggered using Time-Of-Day setup and Occupancy detection for turning on the loads that were located in different areas throughout the building.
Benefits
–By limiting each device to its own 15 minute interval to turn on, the peak demand can reduced by over 75% of the 10kW.
Additional Benefits
–More discrete control of the loads leads to better energy use. When the rooms that use some of these loads are never used throughout the day or week, even more energy is conserved.

 


LEED v4 performance standards emphasize continuous monitoring. POUNCE Systems seamlessly provides continuous monitoring that is locally and remotely accessible.

Actual Temperature Data

One of the POUNCE® Systems installations includes devices in a room with exterior walls. Device 008F is located on the exterior wall and device 0044 is on an inside wall about 10 feet away.

As you can see from the POUNCE® Dashboard graph, the maximum recorded temperature for device 0044 is 44°F and the minimum temp is 17°F. The other device showed an average temperature of 72°. This is a pretty good indication that the exterior wall is lacking insulation.

Syracuse weather data from that same span.

It’s almost uncanny to track the red temperature line in the bottom plot vs. the CEWD temperature in the top plot.


Problem
–Improve control of window air conditioners to reduce wasted energy.
Scenario
–Typical window unit air conditioners run continuously to maintain the temperature setting on the unit regardless of whether the room is occupied.
Analysis
–Rooms that are only occupied for 9 hours using an air conditioner rated at 475 watts to cool up to 165 square feet can waste up to 213kWh if left running 24 hours per day for one month. Where the rate per kWh is $0.18 including delivery charges, fees and taxes, this single air conditioner adds over $38 to the monthly electric bill.
Solution
–POUNCE® outlet that the AC unit is plugged into is programmed to turn on by motion detected by the first person in the room for
Benefits
–Energy is reduced since the unit only runs if someone enters the room in the morning.
Additional Benefits
–The temperature recorded by the outlet can be analyzed to see how efficient the heating system and wall insulation are in that area. Data on the room can be analyzed to see how often the area is in use. For holidays, the unit will not be powered on, thus reducing the energy used that a timer would not recognize.