15 min interval data- shows flow of water to end use 15 min - - PowerPoint PPT Presentation

15 min interval data- shows flow of water to end use

15 min interval data- shows tank top up

• nly

Base flow represents the constant underlying flow of water. …Meaning the water that is always flowing through the pipes at any given time, even when no one is turning on the taps.

• Helpful in identifying leaks or inefficiencies in the system
• Measured in litres per minute (L/min)
• Usually calculated using main meter data

• Use base flow calculator at bottom of page (switch to enabled)
• Set time range to a quiet period overnight

Tips for easier viewing:

• Set interval to 15-min or hours (I like hours because it smooths out

the trends)

• Set chart type to line series or spline series
• Time range may be adjusted- use chart to eyeball lowest valleys in

data

Higher Use 300 and higher Typical 200 to 300 Best Practice Less than 200 Unachieved Target Less than 130

Choose period of time you want to analyse, ex. 1 month Total Litres Water Used / No. of Bedrooms / No. of Days in Period = Benchmark 750,000 litres in a month / 100 bedrooms / 30 days = 250 l/bed/day

100 200 300 400 500 600

Litres / Bedroom / Day

Water Use Trend Against Benchmark

Less than 130 Less than 200 200 to 300 300 and higher Your Usage

Tips to make sure you get accurate stats:

• Make sure only main meters are

selected (or all sub meters only)

• Change graph to show appropriate

period of time (ex. 1 month)

• Check correct number of bedrooms

listed in “Manage Account”

Note: Statistics box will always reflect the meters and time period select on the chart

“The main meter flow monitoring revealed that irrigation of the turf and garden areas are using a much larger volume

• f water than expected –

estimated at 13 kL/day when

• perating. This is often offset

by rainwater collected in tanks in the carpark, resulting in a noticeable difference between days with potable water irrigation and those without.”

Irrigation Peaks

Change in daily consumption with and without irrigation events.

• Main electricity meter only shows

common usage. Expect gentle rise and fall in day and night use.

• Real Power - the power used in equipment

(heating, lighting, driving motors)

• Reactive Power - additional power a site

may also draw, which is not directly used by equipment

• Apparent Power - the combination of real

and reactive power.

• Power Factor (PF) - the relationship

between real and apparent power (kVA).

When you pay for a latte, the last thing you want is more froth than coffee. The same thing can be said about power. Froth on a latte is like wasted energy.

If your site has a poor power factor, you could be paying for energy that cannot be used.

• Ideal power factor is as close as 1 to possible
• Penalty charges may apply if power factor falls below .9
• To improve PF, buildings can install PF correcting equipment

• Power factor sitting around .98 and

never dropping below .96

Power factor sitting around .85 and never getting about .9

“Although the site has a condenser water loop to reject heat from packaged AC units within apartments, there appears to be no seasonal variation between summer (February) and winter (July) within the same year, apart from a 1 hour lag in the data due to daylight saving. This is because the condenser water pumps run at the same speed 24-hours a day, 365 days a year irrespective of demand for water.”