AJ Katalog Radik 012006 finish.indd - Seltron

RADIATORS UNDER DIFFERENT OPERATING CONDITIONS
Conversion of coefficients “f” for n = 1,3
Example of calculation
t 1 t 2
[°C] [°C]
80
70
95
60
50
80
75
70
90 65
60
55
50
75
70
85 65
60
55
70
65
80 60
55
50
65
60
75
55
50
60
55
70
50
45
55
50
65
45
40
55
50
60
45
40
50
45
55
40
35
45
40
50
35
30
40
45 35
30
35
40
30
Air temperature in room t i
10 °C 12 °C 15 °C 18 °C 20 °C 22 °C 24 °C
0,57 0,59 0,62 0,65 0,68 0,70 0,73
0,62 0,65 0,68 0,73 0,76 0,79 0,83
0,69 0,72 0,77 0,83 0,87 0,91 0,96
0,79 0,83 0,89 0,96 1,02 1,08 1,15
0,59 0,61 0,64 0,68 0,71 0,74 0,77
0,62 0,64 0,68 0,72 0,75 0,78 0,82
0,65 0,67 0,72 0,76 0,80 0,83 0,87
0,68 0,71 0,76 0,81 0,85 0,89 0,93
0,72 0,76 0,81 0,87 0,91 0,96 1,01
0,77 0,81 0,87 0,93 0,98 1,04 1,10
0,83 0,87 0,93 1,01 1,07 1,14 1,21
0,64 0,67 0,71 0,75 0,79 0,82 0,86
0,68 0,70 0,75 0,80 0,84 0,88 0,92
0,72 0,75 0,80 0,85 0,89 0,94 0,99
0,76 0,79 0,85 0,91 0,96 1,01 1,07
0,81 0,85 0,91 0,98 1,04 1,10 1,16
0,71 0,74 0,79 0,84 0,88 0,93 0,97
0,75 0,78 0,84 0,90 0,94 0,99 1,05
0,80 0,83 0,89 0,96 1,01 1,07 1,13
0,85 0,89 0,96 1,04 1,10 1,16 1,24
0,91 0,96 1,04 1,13 1,20 1,28 1,37
0,79 0,82 0,88 0,95 1,00 1,05 1,12
0,84 0,88 0,94 1,02 1,08 1,14 1,21
0,89 0,94 1,01 1,10 1,17 1,24 1,32
0,96 1,01 1,10 1,20 1,28 1,37 1,47
0,88 0,93 1,00 1,08 1,15 1,22 1,30
0,94 0,99 1,08 1,17 1,25 1,33 1,42
1,01 1,07 1,17 1,28 1,37 1,47 1,58
1,10 1,16 1,28 1,42 1,52 1,64 1,79
1,00 1,05 1,15 1,26 1,34 1,43 1,54
1,08 1,14 1,25 1,37 1,47 1,59 1,71
1,17 1,24 1,37 1,52 1,64 1,78 1,94
1,28 1,37 1,52 1,71 1,87 2,05 2,27
1,07 1,13 1,23 1,36 1,45 1,56 1,68
1,15 1,22 1,34 1,48 1,60 1,73 1,87
1,25 1,33 1,47 1,65 1,78 1,94 2,13
1,37 1,47 1,64 1,86 2,03 2,24 2,50
1,23 1,31 1,45 1,62 1,75 1,90 2,07
1,34 1,43 1,60 1,80 1,96 2,15 2,37
1,47 1,59 1,78 2,03 2,24 2,48 2,78
1,64 1,78 2,03 2,36 2,64 2,99 3,43
1,45 1,56 1,75 1,98 2,17 2,40 2,67
1,60 1,73 1,96 2,25 2,50 2,79 3,15
1,78 1,94 2,24 2,63 2,96 3,38 3,92
2,03 2,24 2,64 3,20 3,70 4,39 5,39
1,75 1,90 2,17 2,53 2,83 3,19 3,66
1,96 2,15 2,50 2,96 3,37 3,89 4,58
2,24 2,48 2,96 3,63 4,25 5,11 6,38
2,17 2,40 2,83 3,41 3,93 4,62 5,54
2,50 2,79 3,37 4,21 5,01 6,14 7,87
Heat output of individual types of RADIK radiators have
been measured in nominal operating (temperature) conditions
of 75/65/20 °C (t 1 / t 2 / t i) via EN-442:
• temperature of incoming water t 1 = 75 °C
• temperature of return water t 2 = 65 °C
• relative temperature of air t i = 20 °C
Corresponding heat outputs for other operating conditions,
as listed in this catalogue, were calculated from the
established measurements (for the temperature ranges 90/70
°C, 70/55 °C, and 55/45 °C and for room air temperatures
of 15, 20 and 22 °C).
If a radiator is intended for use in a heating system with
other temperature conditions, it is necessary to make a
conversion as follows:
Q = Q c . f
When: Q – calculated need for heat output of the radiator
at 75/65/20 °C
Q c – heat loss of the room
f – conversion coefficient from the table (applies to
the heat Temperature exponent n = 1,3)
In the table of heat outputs for heating conditions of
75/65/20 °C we find for the calculated value Q the suitable
radiator with the appropriate output.
EXAMPLE:
Problem:
For a room with a reguired air temperature of 22 °C and
heat loss of 810 W, we want to use a RADIK KLASIK radiator.
The heating system will be operated with a temperature
range of 60/50 °C.
Given:
• temperature conditions:
temperature of incoming water t 1 = 60 °C
temperature of return water t 2 = 50 °C
relative temperature of air t i = 22 °C
• heat loss of the room
Q c = 810 W
Solution:
For working conditions of 60/50/22°C we find in the table
the coefficient value:
f = 1,73
Q = 810.1,73 = 1401 W
For the calculation of value Q we find in the table of heat
outputs for 75/65/20 °C (pages 30, 31) the right radiator. From
the broad range of types and sizes of RADIK KLASIK one
could, for example, choose one of the following radiators:
Type 11 – 600 x 1400 .....................................1403 W
Type 21 – 600 x 1100 .....................................1417 W
Type 22 – 500 x 1000 .....................................1452 W
The company reserves the right to make technical changes. 27