Demand For Useful Energy For; Energy And Dhw - Bosch CHP CE 240 NE Technical Manual

Engineering information and sizing
13000 kg/h ... 28000 kg/h
CHP CHP CE ...
steam boiler UL-S ...
CHP CHP CE ...
steam boiler UL-S ...
CHP CHP CE ...
steam boiler UL-S ...
CHP CHP CE ...
steam boiler UL-S ...
CHP CHP CE ...
steam boiler UL-S ...
CHP CHP CE ...
steam boiler UL-S ...
CHP CHP CE ...
steam boiler UL-S ...
CHP CHP CE ...
steam boiler UL-S ...
CHP CHP CE ...
steam boiler UL-S ...
CHP CHP CE ...
steam boiler UL-S ...
CHP CHP CE ...
steam boiler UL-S ...
Table 15 CHP/boiler combinations (13000 kg/h ... 28000 kg/h)
+ 0 boiler sizes
+1 boiler size
+ 2 boiler sizes
3.3.4 Demand for useful energy for make-up water
preheating, heating energy and DHW
The motor waste heat that occurs in the CHP should
primarily be used for heating the make-up water
required for the steam boiler.
Besides the boiler size, the amount of make-up water is
dependent on the form of heating (directly or indirectly),
on the existing or planned condensate management in
the object and on water quality.
The required make-up ware amount has to be
determined depending on the corresponding standards.
The make-up water is heated up here as much as
possible. Then the make-up water is heated up further in
the feed water container with steam to approx. 103 °C
and is led to the boiler via the two economisers.
In doing so, internal steam for make-up water treatment
is saved and the make-up water heating is used as heat
sink for the motor waste heat of the CHP to increase its
runtime.
Graph 14 shows the possible content of make-up water
preheating (heating from 10 °C to 75 °C) with regard to
boiler output in kg/h and the required additional water
amount in %.
If the occurring motor heat output is larger than the
required heat for make-up water preheating, the excess
heat can be used for covering the heat load or for DHW
heating.
28
Amount of steam incl. own use of boiler (burner + waste heat performance) in [kg/h]
13000 14000
240 NE 240 NE
13000 14000
400 NE 400 NE
13000 14000
600 NE 600 NE
13000 14000
800 NE 800 NE
13000 14000
854 NE 854 NE
13000 14000
1200 NE 1200 NE
13000 14000
1287 NE 1287 NE
13000 14000
1560 NE 1560 NE
13000 14000
1718 NE 1718 NE
13000 14000
1999 NE 1999 NE
13000 14000
2000 NE 2000 NE
13000 14000
Recommended
Recommended
Check economic viability
16000 17000
240 NE 240 NE
16000 17000
400 NE 400 NE
16000 17000
600 NE 600 NE
16000 17000
800 NE 800 NE
16000 17000
854 NE 854 NE
16000 17000
1200 NE 1200 NE
16000 17000
1287 NE 1287 NE
16000 17000
1560 NE 1560 NE
16000 17000
1718 NE 1718 NE
16000 17000
1999 NE 1999 NE
18000 18000
2000 NE 2000 NE
18000 18000
18000 22000
240 NE 240 NE
18000 22000
400 NE 400 NE
18000 22000
600 NE 600 NE
18000 22000
800 NE 800 NE
18000 22000
854 NE 854 NE
18000 22000
1200 NE 1200 NE
18000 22000
1287 NE 1287 NE
18000 22000
1560 NE 1560 NE
18000 22000
1718 NE 1718 NE
18000 22000
1999 NE 1999 NE
18000 22000
2000 NE 2000 NE
18000 22000
Systemlösung – 6 720 885 509 (2018/03)
28000
240 NE
28000
400 NE
28000
600 NE
28000
800 NE
28000
854 NE
28000
1200 NE
28000
1287 NE
28000
1560 NE
28000
1718 NE
28000
1999 NE
28000
2000 NE
28000