System Components; General - Bosch CHP CE 240 NE Technical Manual

2

System components

2.1

General

The CHP system with waste heat use for steam
generation consists of 2 key components plus required
accessories.
The key components are:
• A CHP module, designed for flue gas heat utilisation
(without flue gas heat exchanger), consisting of
combustion engine and generator
• A steam boiler with combustion and integrated fourth
draught for waste heat use
• The superordinate control of the combination CHP
and 4-draught steam boiler should be effected by the
Bosch control system MEC system.
1
11
10
Fig. 1 Simplified function diagram 4-draught steam boiler and CHP module and CHP (simplified depiction)
[1] 4-draught steam boiler
[2] Economiser
[3] Chimney
[4] Flue gas heat exchanger
[5] Water service module
[6] Mains power supply
[7] Consumer
[8] Manifold
[9] Memory
[10] CHP
[11] Flue with bypass
Current
Water/condensate
Steam
Flue gas
If a replacement power supply is necessary, e.g. as in
hospitals or other safety-relevant facilities, a CHP
module can also be used as standby power generator.
Systemlösung – 6 720 885 509 (2018/03)
The combustion motor is intended for activating the
generator. The hot flue gas, that is created during the
combustion process, with temperatures above 400 °C is
used in the 4-draught steam boiler for steam production.
In addition, during operation of the CHP module, engine
coolant with a temperature of up to 85 °C is created.
Depending on the loss of condensate in the steam
network, this can be used for make-up water preheating
in the steam boiler or for space heating or DHW heating.
The system control "MEC system" controls the
combination of CHP module and 4-draught steam boiler
and optimally integrates is in the compete energy
production system on site.
2
3
8
9
5
4 3
System components
6
7
6 720 819 535-01.1T
5