POUNCE Solutions: Facilities and Building Managers


“The data that I get from the POUNCE® System tells me all I need to know”


Problem
–Rooms that are heated and cooled using a single stage heat pump or single stage air conditioners and electric heaters can be left running for long lengths of time without anyone in the room.
Scenario
–A hotel room has an under-window unit with a built in thermostat.
Scenario
–The client checks in late in the evening and leaves early in the morning. The air is heated for 14 hours without anyone entering the room.
Analysis
–Take a wall unit that draws 15 amps at 240VAC and runs 30% of the time to maintain a comfortable temperature. At 3.6kW, over 24 hours it consumes 26 kWh.
Solution
–Using the POUNCE® System with occupancy detection to reduce the temperature for 14 hours, it may now only run 15% of the time. This is a reduction of 7.6kW per day. At $0.18 per kWh, this is a savings of $41 per month.
Benefits
–At $0.18 per kWh, this is a savings of $41 per month.
Additional Benefits

–Retailers and hotel rooms can use the statistics gathered by the POUNCE® System to optimize their operations. Furthermore, the lighting, refrigerators, exhaust fans, televisions and other loads can be automatically or remotely powered off when rooms are unoccupied.

Auxiliary electric heaters supplementing heat pump on a very cold day. Lack of efficient control allows excessively warm room temperature.

Connect a POUNCE® switch in line with the electric heat to use occupancy to determine and control a more precise temperature.

The electric heater was on from 9pm to 11am over the first peak above. At 4000W, calculate how much it cost to run that heater when no one was in the building for most of that time.

10 hours * 4kW * $ /kWh= $
 
Enter your cost per kWh found in the billing calculator on the solutions page.
Example:
10 hours * 4kW * $0.17/kWh = $6.80 of wasted energy.

The blue line is temperature data from a POUNCE® light switch on an inside wall. The red line is from a POUNCE® switch by the door to the unheated common area.

The wide swings in temperature on the red line shows that the door is losing heat and is in need of weatherstripping. It also shows the duty cycle of the heat pump.


Problem
– Old-fashioned programmable thermostats operate on the premise that people use the buildings at the same time every day of every week.
Scenario
– Two-wire thermostat control closes a contact to the boiler or furnace to call for comfort temperature during the working day and an efficiency temperature during the rest of the 24-hour period.
Analysis
– Areas of buildings are used more sporadically than a simple repetitive schedule.
Solution
– A POUNCE® switch is wired to a simple relay with dry contacts and configured to operate as a thermostat. Motion detected other POUNCE® devices in the system and by this switch cause the relay to energize and close the dry contacts just like the old thermostat did.
Benefits
– Energy is saved not only for the hours before the building occupants arrive, but also during holidays.
Additional Benefits
– Users don’t have to worry about overriding the old programmable thermostat if the area will be used outside of the programmed hours. When the area is in use, the temperature will be adjusted to the comfort level automatically. When the area is no longer in use, the temperature reduces to the efficiency level.

 


Problem
– Many overhead projectors and smart boards turn on automatically after a power outage.
Scenario
– The lamps inside the projectors can stay lit for hours or days without anyone knowing it..
Analysis
– The lamps can cost several hundred dollars and take hours of labor to replace.
Solution
– When configuring the POUNCE® outlet that the projector plugs into, choose the default state in the menu to be “off.” This means that after a power outage, power to the projector will remain off until someone actually needs it. The POUNCE® outlet can be remotely turned back on through the POUNCE® Dashboard, or it can be programmed to turn on when the POUNCE® light switch button is pressed. Other options for returning power to the outlet are possible.
Benefits
– As well as reduce unnecessary energy use, this could save hundreds of dollars by extending the life of the lamp and the internal electronic equipment.
Additional Benefits
– This could also be a good indicator to the building occupants that there was a power disruption in the recent past, leading to other checks on the electrical system.

 


Set alerts and automated responses for power, temperature, and energy thresholds to indicate when equipment may need attention.

For example, use POUNCE networked devices to turn fans on if the room temperature gets too high. Send a text or email alert to indicate the problem.