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Building Technologies
Basic documentation: Communication via the KNX bus
CE1P3127en
HVAC Products
Appendix
30.08.2007
9.5
Supply chains
The applications in the Synco 700 type RMU/RMH controllers consist of HVAC
functional units. These functional units are based on the supply chains in buildings.
A "supply chain" consists of at least energy generator and an energy consumer, but
often of an energy generator, an energy distributor and an energy consumer.
1. One energy generator with one distributor and one energy consumer.
2. One energy generator, two distributors in series and one energy consumer
3. Several energy generators, distributors and energy consumers in parallel
Source
Distributor
Consumer
Coordinator
Dispatcher
31
27
Z
3
3
e
n
C1
C1
C2
D1
D1
D2
S1
S2
1.
2.
3.
S..
C..
D..
S1
S
D
C
D2
Down =
stream
Up =
stream
D1
C1
S1
C
o
n
s
u
m
e
r
s
id
e
S
o
u
rc
e
s
id
e
The "Coordinator" and "Dispatch Handler" are defined as logical elements in the
supply chain. Their role is as follows:
•
The Coordinator collates the demand signals from all the downstream links in
the chain, and delivers the resulting demand signal to the link upstream. The
Coordinator also reports the operational status of the upstream links to the
downstream link.
•
From resulting demand signals from the energy consumers, the Dispatch
Handler determines which generators, and how many, need to be enabled.
The above illustrations of supply chains show the following:
•
Energy consumer
has one output to the distribution component
•
Energy generator
has one input from the distribution component
•
Energy consumer
transmits heating/cooling
demand
to the upstream
distribution
component
•
Energy generator
receives heating/cooling
demand
from the upstream
distribution
component
The supply-chain
structure
Supply chain outputs
and inputs
Supply/demand
