8
12.
PERFORMANCE DATA
Exchanger performance the for flow of
500 l/hr
1,000 l/hr
3,000 l/hr
4,500 l/hr
800 NTR/NTRR – bottom exchanger surface 2.76 m
2
Heating time by exchanger for temperature drop 80/60°C (min)
136
94
66
61
Performance for temperature drop 80/60°C (kW)
20,2
29,9
41,8
45
Permanent performance (l/hr)
348
515
720
775
800 NTRR – top exchanger surface 1.2 m
2
Heating time by exchanger for temperature drop 80/60°C (min)
81
60
46
42
Performance for temperature drop 80/60°C (kW)
14,4
19,2
24,6
26
Permanent performance (l/hr)
248
330
423
447
1500 NTR/NTRR – bottom exchanger surface 3.5 m
2
Heating time by exchanger for temperature drop 80/60°C (min)
213
128
71
60
Performance for temperature drop 80/60°C (kW)
25,2
38,9
64,4
74,2
Permanent performance (l/hr)
435
670
1109
1276
1500 NTRR – top exchanger surface 1.75 m
2
Heating time by exchanger for temperature drop 80/60°C (min)
137
94
63
56
Performance for temperature drop 80/60°C (kW)
19,4
26,4
37,2
40,9
Permanent performance (l/hr)
334
454
640
704
2000 NTR/NTRR – bottom exchanger surface 4.00 m
2
Heating time by exchanger for temperature drop 80/60°C (min)
262
155
86
73
Performance for temperature drop 80/60°C (kW)
28,9
44,2
71,5
81,4
Permanent performance (l/hr)
498
761
1230
1400
2000 NTRR – top exchanger surface 2.00 m
2
Heating time by exchanger for temperature drop 80/60°C (min)
160
108
70
63
Performance for temperature drop 80/60°C (kW)
21,2
29,2
41,9
46,3
Permanent performance (l/hr)
364
503
721
797
NL Power Factor
Based on DIN, the expression of a normal flat is introduced for apartment houses in the FRG. Such a flat has four rooms; it is
occupied by 3.5 people; it has a bathtub, a hand basin, and a sink. Flats of other sizes, number of occupants and different equipment
are converted to normal flats using the relations given in the standard (NL). The situation in our apartment houses, massively built
until the recent past, is similar. Flats intended for 3 to 4 people are equipped identically with normal German flats. Smaller flats tend
to have smaller bathtub or a shower; larger, so-called two-generation flats tend to have an extra hand basin. Apartment buildings
with luxury flats and high standard equipment, with higher number of fittings, of fittings equipped with high standard drain
armatures, both hot water and heat energy needs must be adjusted.
