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Title:
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De C-box: een geïntegreerde binnenklimaatregeling gebruik makend van een ICT-netwerk: Architectuur en analyse van realisatiemogelijkheden binnen woningen
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Author(s):
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Published by:
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Publication date:
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ECN
Energy in the Built Environment
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1-7-2003
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ECN report number:
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Document type:
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ECN-C--03-036
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ECN publication
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Number of pages:
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Full text:
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74
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Download PDF
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Abstract:
This document describes the development of a set of concepts for anintegrated management system for thermal comfort in houses, the C-Box.
An information model is given for the C-Box in which, apart from a central
heating system, also other components are taken into account, such as
ventilation and solar radiation control. Besides integration of components,
also control within a wider context is defined. Access to external information,
model building information and, especially, the user perception is modelled.
The C-Box references the Fanger comfort model in which, besides air
temperature, radiation temperature, humidity, air velocity, user activity
and clothing level are taken into account. The comfort management model
is an adaptive model, thus anticipating and avoiding unwanted effects
in the near future (several hours up to one day).
Special attention is paid to the interaction between de C-Box and the
occupants of a house. Occupants in a house can have a dynamic behaviour,
both in presence and in activities. In many cases the comfort wishes
can be derived from a general style of living of the occupants. In order
to have a adequate comfort management, temporary changes in the comfort
wish need to be detected in time. There is a need for a practical, understandable
and simple user interaction, which in may cases is a bottleneck in the
development of technical systems. Advances in the area of ?ambient technology?
can lead to a new way of integration of technology and user acceptance,
which bridges this gap.
In this report a number of simulation calculations have been performed
to assess the impact of this new philosophy in terms of cost and comfort.
The calculations are performed using representative houses in the Netherlands
taking into account the differences in life-style. Occupants who are
already efficient in their energy use can gain extra energy savings
up to 5%, without little or no comfort reduction. More careless occupants
can even gain more. An essential constraint is that information can
be obtained on the user profile and user wish.
The information model is worked out further in a number of protocol
and interface definitions, which form the basis for an experimental
setting. In this experimental setting, a C-Box has three connection
types: a connection to the temperature sensor and heating installation,
a standard IP-connection and a connection to a home network bus.
Before going into implementation a number of bottlenecks in the C-Box
concept have to be solved. Energy saving will nor easily become a major
reason for investment in home networks. However, in the near future
it might integrate with emerging home network markets for security and
care systems and entertainment. Also the cost in money and energy of
the hardware are expected to be solved in the near future, since wireless
components and sensors are becoming cheaper in cost and energy use (lifetime
batteries)..
In appendix B a proposal has been defined for a demonstration project
for the C-Box concept acting within the constraints identified in this
report: technical realisation; integration with security and care systems;
proof of cost and energy saving in practice; and the essential user
interaction.
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