Residential End Uses of Water 2016, Data Tables

On Demand System, Power and Energy Tables

Data from Residential End Uses of Water 2016 Study (REU2016)

Hour Mean Water Vol (m3) Mean Duration (sec) Event Count Mean
0 0.011 193 1
1 0.011 114 1
2 0.008 93 0
3 0.008 95 0
4 0.011 127 1
5 0.019 202 1
6 0.030 298 2
7 0.034 347 3
8 0.034 333 3
9 0.034 331 3
10 0.030 313 2
11 0.026 282 2
12 0.026 273 2
13 0.026 261 2
14 0.023 246 2
15 0.023 244 2
16 0.023 251 2
17 0.026 278 3
18 0.026 286 3
19 0.026 294 3
20 0.026 275 2
21 0.026 256 2
22 0.023 221 2
23 0.019 170 1

Calculation of Pump Operation Power (On Demand System)

Equation 1: Ppump operation for hour = [ΔZ + k )× (avg flow rate for hour)×ρwater×g×(1η)]

Hour Poperation(kW) Z+k (m) flow rate ( m3s) water(kgm3) g (ms2) 1
0 0.049 30 0.000059 1,000 9.81 2.86
1 0.084 30 0.000100 1,000 9.81 2.86
2 0.068 30 0.000081 1,000 9.81 2.86
3 0.067 30 0.000080 1,000 9.81 2.86
4 0.075 30 0.000089 1,000 9.81 2.86
5 0.079 30 0.000094 1,000 9.81 2.86
6 0.085 30 0.000102 1,000 9.81 2.86
7 0.083 30 0.000098 1,000 9.81 2.86
8 0.086 30 0.000102 1,000 9.81 2.86
9 0.087 30 0.000103 1,000 9.81 2.86
10 0.081 30 0.000097 1,000 9.81 2.86
11 0.079 30 0.000094 1,000 9.81 2.86
12 0.082 30 0.000097 1,000 9.81 2.86
13 0.085 30 0.000102 1,000 9.81 2.86
14 0.078 30 0.000092 1,000 9.81 2.86
15 0.078 30 0.000093 1,000 9.81 2.86
16 0.076 30 0.000090 1,000 9.81 2.86
17 0.080 30 0.000095 1,000 9.81 2.86
18 0.078 30 0.000093 1,000 9.81 2.86
19 0.076 30 0.000090 1,000 9.81 2.86
20 0.081 30 0.000096 1,000 9.81 2.86
21 0.087 30 0.000104 1,000 9.81 2.86
22 0.086 30 0.000103 1,000 9.81 2.86
23 0.094 30 0.000111 1,000 9.81 2.86

Calculation of Start-Up Power of

Grundfos Pump 13.2 GPM (Model# 96515514 Type: MQ3-35B)

Equation 2: Eof Trial = SUM (I*V*dt)(1 hr/3600 sec)

Where

Parameter Symbol Value Unit
Start-Up Energy of Trial Eof Trial Determined from Equation 2 kWh
Current I From Data Amps
Voltage V From Data Volts
Time Duration with given Current t From Data seconds

*Raw data taken by hand using multimeter and stopwatch

Trial A
Time (sec) Current (amps) Voltage (V) Power (W) Energy (kWsec)
0 0 213.7 0
1 5.6 213.7 1196.72 1.296
3 2.8 213.7 598.36
6 2.8 213.7 598.36 3
13 2.6 213.7 555.62
17 2.6 213.7 555.62 6.16
23 2.6 213.7 555.62 *Assumed in operation
28 2.6 213.7 555.62 *Assumed in operation
Start-Up Energy (kWh): 0.003
Trial B
Time (sec) Current (amps) Voltage (V) Power (W) Energy (kWsec)
0 0 213.7 0
1 3.3 213.7 705.21 0.7
3 2.8 213.7 598.36
8 2.8 213.7 598.36 4.2
9 2.6 213.7 555.62
13 2.6 213.7 555.62 2.8
17 2.6 213.7 555.62 *Assumed in operation
Start-Up Energy (kWh): 0.002
Trial C
Time (sec) Current (amps) Voltage (V) Power (W) Energy (kWsec)
0 0 213.7 0
1 4.4 213.7 940.28 0.9
3 2.8 213.7 598.36
5 2.8 213.7 598.36 2.4
9 2.7 213.7 576.99 0.58
12 2.6 213.7 555.62
15 2.6 213.7 555.62 2.8
18 2.6 213.7 555.62 *Assumed in operation
22 2.6 213.7 555.62 *Assumed in operation
Start-Up Energy (kWh): 0.002
Trial D
Time (sec) Current (amps) Voltage (V) Power (W) Energy (kWsec)
0 0 213.7 0
1 5.3 213.7 1132.61 1.1
2 2.8 213.7 598.36
5 2.8 213.7 598.36
8 2.8 213.7 598.36
10 2.8 213.7 598.36
14 2.8 213.7 598.36 7.8
17 2.7 213.7 576.99 0.58
20 2.6 213.7 555.62 0.56
22 2.6 213.7 555.62 *Assumed in operation
26 2.6 213.7 555.62 *Assumed in operation
30 2.6 213.7 555.62 *Assumed in operation
Start-Up Energy (kWh): 0.003
Trial E
Time (sec) Current (amps) Voltage (V) Power (W) Energy (kWsec)
0 0 213.7 0
2 4 213.7 854.8 1.6
3 2.8 213.7 598.36
6 2.8 213.7 598.36 1.8
8 2.7 213.7 576.99
10 2.7 213.7 576.99 2.32
14 2.6 213.7 555.62 2.24
16 2.6 213.7 555.62 *Assumed in operation
18 2.6 213.7 555.62 *Assumed in operation
24 2.6 213.7 555.62 *Assumed in operation
27 2.6 213.7 555.62 *Assumed in operation
29 2.6 213.7 555.62 *Assumed in operation
Start-Up Energy (kWh): 0.002
Mean Energy of all Trials: .0024 (kWh)