Heating schedule for quality regulation of heat supply based on the average daily outdoor temperature
Material taken from the site energoworld.ru
Usually, the following temperature graphs are used: 150/70, 130/70, 115/70, 105/70, 95/70. The schedule is selected depending on the specific local conditions. Home heating systems operate according to schedules 105/70 and 95/70. According to charts 150, 130 and 115/70 main heating networks are operating.
Consider an example of how to use the chart. Suppose, outside temperature «minus 10 degrees». Heating networks operate according to the temperature schedule 130/70, means at -10 aboutWith the temperature of the heat carrier in the supply pipeline of the heating network should be 85,6 degrees, in the supply pipeline of the heating system — 70,8 aboutC on chart 105/70 or 65.3 aboutC on chart 95/70. The water temperature after the heating system should be 51.7 aboutWITH.
Usually, temperature values in the supply pipeline of heat networks are rounded off when assigned to the heat source. for instance, according to the schedule should be 85.6aboutWITH, and at the CHPP or boiler house it is set 87 degrees.
The table below cannot be used for your region and must be converted to climatological data of your locality, is a practical example for understanding the release of heat depending on the outside temperature.
|
Temperature |
Temperature of network water in the supply pipeline |
Water temperature in the supply pipe of the heating system |
Water temperature after heating system |
|||
|
150 |
130 |
115 |
105 |
95 |
||
|
8 |
53,2 |
50,2 |
46,4 |
43,4 |
41,2 |
35,8 |
|
7 |
55,7 |
52,3 |
48,2 |
45,0 |
42,7 |
36,8 |
|
6 |
58,1 |
54,4 |
50,0 |
46,6 |
44,1 |
37,7 |
|
5 |
60,5 |
56,5 |
51,8 |
48,2 |
45,5 |
38,7 |
|
4 |
62,9 |
58,5 |
53,5 |
49,8 |
46,9 |
39,6 |
|
3 |
65,3 |
60,5 |
55,3 |
51,4 |
48,3 |
40,6 |
|
2 |
67,7 |
62,6 |
57,0 |
52,9 |
49,7 |
41,5 |
|
1 |
70,0 |
64,5 |
58,8 |
54,5 |
51,0 |
42,4 |
|
0 |
72,4 |
66,5 |
60,5 |
56,0 |
52,4 |
43,3 |
|
-1 |
74,7 |
68,5 |
62,2 |
57,5 |
53,7 |
44,2 |
|
-2 |
77,0 |
70,4 |
63,8 |
59,0 |
55,0 |
45,0 |
|
-3 |
79,3 |
72,4 |
65,5 |
60,5 |
56,3 |
45,9 |
|
-4 |
81,6 |
74,3 |
67,2 |
62,0 |
57,6 |
46,7 |
|
-5 |
83,9 |
76,2 |
68,8 |
63,5 |
58,9 |
47,6 |
|
-6 |
86,2 |
78,1 |
70,4 |
65,0 |
60,2 |
48,4 |
|
-7 |
88,5 |
80,0 |
72,1 |
66,4 |
61,5 |
49,2 |
|
-8 |
90,8 |
81,9 |
73,7 |
67,9 |
62,8 |
50,1 |
|
-9 |
93,0 |
83,8 |
75,3 |
69,3 |
64,0 |
50,9 |
|
-10 |
95,3 |
85,6 |
76,9 |
70,8 |
65,3 |
51,7 |
|
-11 |
97,6 |
87,5 |
78,5 |
72,2 |
66,6 |
52,5 |
|
-12 |
99,8 |
89,3 |
80,1 |
73,6 |
67,8 |
53,3 |
|
-13 |
102,0 |
91,2 |
81,7 |
75,0 |
69,0 |
54,0 |
|
-14 |
104,3 |
93,0 |
83,3 |
76,4 |
70,3 |
54,8 |
|
-15 |
106,5 |
94,8 |
84,8 |
77,9 |
71,5 |
55,6 |
|
-16 |
108,7 |
96,6 |
86,4 |
79,3 |
72,7 |
56,3 |
|
-17 |
110,9 |
98,4 |
87,9 |
80,7 |
73,9 |
57,1 |
|
-18 |
113,1 |
100,2 |
89,5 |
82,0 |
75,1 |
57,9 |
|
-19 |
115,3 |
102,0 |
91,0 |
83,4 |
76,3 |
58,6 |
|
-20 |
117,5 |
103,8 |
92,6 |
84,8 |
77,5 |
59,4 |
|
-21 |
119,7 |
105,6 |
94,1 |
86,2 |
78,7 |
60,1 |
|
-22 |
121,9 |
107,4 |
95,6 |
87,6 |
79,9 |
60,8 |
|
-23 |
124,1 |
109,2 |
97,1 |
88,9 |
81,1 |
61,6 |
|
-24 |
126,3 |
110,9 |
98,6 |
90,3 |
82,3 |
62,3 |
|
-25 |
128,5 |
112,7 |
100,2 |
91,6 |
83,5 |
63,0 |
|
-26 |
130,6 |
114,4 |
101,7 |
93,0 |
84,6 |
63,7 |
|
-27 |
132,8 |
116,2 |
103,2 |
94,3 |
85,8 |
64,4 |
|
-28 |
135,0 |
117,9 |
104,7 |
95,7 |
87,0 |
65,1 |
|
-29 |
137,1 |
119,7 |
106,1 |
97,0 |
88,1 |
65,8 |
|
-30 |
139,3 |
121,4 |
107,6 |
98,4 |
89,3 |
66,5 |
|
-31 |
141,4 |
123,1 |
109,1 |
99,7 |
90,4 |
67,2 |
|
-32 |
143,6 |
124,9 |
110,6 |
101,0 |
94,6 |
67,9 |
|
-33 |
145,7 |
126,6 |
112,1 |
102,4 |
92,7 |
68,6 |
|
-34 |
147,9 |
128,3 |
113,5 |
103,7 |
93,9 |
69,3 |
|
-35 |
150,0 |
130,0 |
115,0 |
105,0 |
95,0 |
70,0 |
Calculation of the temperature graph
The method for calculating the temperature graph is described in the reference book «Adjustment and operation of water heating networks» (Chapter 4, P. 4.4, with. 153,).
If you do not use a computer, this is a rather laborious and long process., since several values must be read for each outdoor temperature: T1, T3, T2 and t. d.
Climatological data. Kiev
Publication author
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