OpenLegislation

Division 6 Conditions for measurements and calculations of solar devices

United Kingdom

Original text. Later amendments are not shown.

The solar collector, solar hot water storage tank and pump in the collector loop (if applicable) shall be tested separately. Where the solar collector and solar hot water storage tank cannot be tested separately, they shall be tested in combination.

The results shall be used for the determination of the standing loss S and the calculations of the collector efficiency ηcol , the annual non-solar heat contribution Qnonsol for the load profiles M, L, XL and XXL under the average climate conditions set out in Tables 13 and 14, and the annual auxiliary electricity consumption Qaux in kWh in terms of final energy.

Table 9

Standard rating conditions for heat pump space heaters and heat pump combination heaters

Heat sourceOutdoor heat exchangerIndoor heat exchanger
Climate conditionInlet dry bulb (wet bulb) temperatureHeat pump space heaters and heat pump combination heaters, except low-temperature heat pumpsLow-temperature heat pumps
Inlet temperatureOutlet temperatureInlet temperatureOutlet temperature
Outdoor airAverage

+ 7 °C

(+ 6 °C)

+47 °C+55 °C+30 °C+35 °C
Colder

+ 2 °C

(+ 1 °C)

Warmer

+ 14 °C

(+ 13 °C)

Exhaust airAll

+ 20 °C

(+ 12 °C)

Inlet / outlet temperature
WaterAll

+ 10 °C /

+ 7 °C

BrineAll0 °C/– 3 °C

Table 10

Reference design conditions for heat pump space heaters and heat pump combination heaters, temperatures in dry bulb air temperature (wet bulb air temperature indicated in brackets)

Climate conditionReference design temperatureBivalent temperatureOperation limit temperature
Tdesignh Tbiv TOL
Average– 10 (– 11) °Cmaximum + 2 °Cmaximum – 7 °C
Colder– 22 (– 23) °Cmaximum – 7 °Cmaximum – 15 °C
Warmer+ 2 (+ 1) °Cmaximum + 7 °Cmaximum + 2 °C

Table 11

Maximum ventilation exhaust air available [m3/h], with humidity of 5,5 g/m3

Declared load profileXXSXSSMLXLXXL
Maximum ventilation exhaust air available1091281281591908701 021

Table 12

European reference heating season under average, colder and warmer climate conditions for heat pump space heaters and heat pump combination heaters

binj Tj [°C]Average climate conditionsColder climate conditionsWarmer climate conditions
Hj [h/annum] Hj [h/annum] Hj [h/annum]
1 to 8–30 to –23000
9–22010
10–21060
11–200130
12–190170
13–180190
14–170260
15–160390
16–150410
17–140350
18–130520
19–120370
20–110410
21–101430
22–925540
23–823900
24–7241250
25–6271690
26–5681950
27–4912780
28–3893060
29–21654540
30–11733850
3102404900
3212805330
3323203803
34335722822
35435626163
36530327963
376330229175
387326269162
398348233259
409335230360
4110315243428
4211215191430
4312169146503
4413151150444
451410597384
46157461294
Total hours:4 9106 4463 590

Table 13

Average daytime temperature [°C]

JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember
Average climate conditions+2,8+2,6+7,4+12,2+16,3+19,8+21,0+22,0+17,0+11,9+5,6+3,2

Table 14

Average global solar irradiance [W/m2]

JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember
Average climate conditions701041491922212222322171761298056

Table 15

Water heating load profiles of combination heaters

h 3XS XXS XS S
Qtap f Tm Qtap f Tm Qtap f Tm Qtap f Tm Tp
kWh l/min°C kWh l/min°C kWh l/min°C kWh l/min°C°C
07:00 0,015 225 0,105 225 0,105 325
07:05 0,015 225
07:15 0,015 225
07:26 0,015 225
07:30 0,015 225 0,105 225 0,525 335 0,105 325
07:45
08:01
08:05
08:15
08:25
08:30 0,105 225 0,105 325
08:45
09:00 0,015 225
09:30 0,015 225 0,105 225 0,105 325
10:00
10:30
11:00
11:30 0,015 225 0,105 225 0,105 325
11:45 0,015 225 0,105 225 0,105 325
12:00 0,015 225 0,105 225
12:30 0,015 225 0,105 225
12:45 0,015 225 0,105 225 0,525 335 0,315 41055
14:30 0,015 225
15:00 0,015 225
15:30 0,015 225
16:00 0,015 225
16:30
17:00
18:00 0,105 225 0,105 325
18:15 0,105 225 0,105 340
18:30 0,015 225 0,105 225
19:00 0,015 225 0,105 225
19:30 0,015 225 0,105 225
20:00 0,105 225
20:30 1,05 335 0,42 41055
20:45 0,105 225
20:46
21:00 0,105 225
21:15 0,015 225 0,105 225
21:30 0,015 225 0,525 545
21:35 0,015 225 0,105 225
21:45 0,015 225 0,105 225
Qref 0,3452,12,12,1

Continued Table 15

Water heating load profiles of combination heaters

h M L XL
Qtap f Tm Tp Qtap f Tm Tp Qtap f Tm Tp
kWh l/min°C°C kWh l/min°C°C kWh l/min°C°C
07:00 0,105 325 0,105 325 0,105 325
07:05 1,4 640 1,4 640
07:15 1,82 640
07:26 0,105 325
07:30 0,105 325 0,105 325
07:45 0,105 325 4,42 101040
08:01 0,105 325 0,105 325
08:05 3,605 101040
08:15 0,105 325 0,105 325
08:25 0,105 325
08:30 0,105 325 0,105 325 0,105 325
08:45 0,105 325 0,105 325 0,105 325
09:00 0,105 325 0,105 325 0,105 325
09:30 0,105 325 0,105 325 0,105 325
10:00 0,105 325
10:30 0,105 31040 0,105 31040 0,105 31040
11:00 0,105 325
11:30 0,105 325 0,105 325 0,105 325
11:45 0,105 325 0,105 325 0,105 325
12:00
12:30
12:45 0,315 41055 0,315 41055 0,735 41055
14:30 0,105 325 0,105 325 0,105 325
15:00 0,105 325
15:30 0,105 325 0,105 325 0,105 325
16:00 0,105 325
16:30 0,105 325 0,105 325 0,105 325
17:00 0,105 325
18:00 0,105 325 0,105 325 0,105 325
18:15 0,105 340 0,105 340 0,105 340
18:30 0,105 340 0,105 340 0,105 340
19:00 0,105 325 0,105 325 0,105 325
19:30
20:00
20:30 0,735 41055 0,735 41055 0,735 41055
20:45
20:46 4,42 101040
21:00 3,605 101040
21:15 0,105 325 0,105 325
21:30 1,4 640 0,105 325 4,42 101040
21:35
21:45
Qref 5,84511,65519,07

Continued Table 15

Water heating load profiles of combination heaters

h XXL
Qtap f Tm Tp
kWh l/min°C°C
07:00 0,105 325
07:05
07:15 1,82 640
07:26 0,105 325
07:30
07:45 6,24 161040
08:01 0,105 325
08:05
08:15 0,105 325
08:25
08:30 0,105 325
08:45 0,105 325
09:00 0,105 325
09:30 0,105 325
10:00 0,105 325
10:30 0,105 31040
11:00 0,105 325
11:30 0,105 325
11:45 0,105 325
12:00
12:30
12:45 0,735 41055
14:30 0,105 325
15:00 0,105 325
15:30 0,105 325
16:00 0,105 325
16:30 0,105 325
17:00 0,105 325
18:00 0,105 325
18:15 0,105 340
18:30 0,105 340
19:00 0,105 325
19:30
20:00
20:30 0,735 41055
20:45
20:46 6,24 161040
21:00
21:15 0,105 325
21:30 6,24 161040
21:35
21:45
Qref 24,53