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| Authors: | N.J.A. van der Velden, K.R. Nawrocki |
Abstract:
Boiler efficiency depends on:
- using an exhausted gas condenser
- isolation of the boiler
- temperature of the expansion tank
- the capacity of the boiler
- the use of the boiler for peak load
Conclusions
Higher efficiency by:
- double condensor
- thicker isolation
- cold expansion tank
- no surplus of boiler capacity
- no peak load
| Boiler efficiency by peak load 1) |
Boiler efficiency by yearly period (% at caloric value) 1)
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| type of condensor |
thickness of |
isolation |
type of condensor |
thickness of |
isolation
|
| |
4 cm |
8 cm |
|
4 cm |
8 cm
|
| no condensor |
79 |
89 |
no condensor |
90 |
93
|
| single primair |
84 |
95 |
single primair |
96 |
100
|
| single secundair |
85 |
95 |
single secundair |
97 |
101
|
| double |
87 |
98 |
double |
100 |
104
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| 1. basic situation and cover of heat demand by alternative heat source - 70% |
1. heat intensity - 50 m3 n.g.e./m2; area glass 12,500 m2; boiler capacity 3 MW
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Boiler efficiency and heat demand in weekly periods
Graphic available in full text only
- Financial support by NOVEM
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