dc.description.abstract |
This work is concerned with the analysis of
industrial energy use for the purposes of reducing that
use to a minimum within the constraints imposed by the
existing plant. The work is divided into two parts.
Firstly, a general analysis of the energy used
in an industrial plant is made for the year 1986. Based
on monthly records of energy consumption and
environmental parameters, it is primarily intended to
heighten management awareness of energy flows and the
relative contributions from each energy type towards
the total annual consumption and cost. It is performed
using a suite of interactive linked computer programs
and the data is reduced to a graphical form for
presentation in a report. The analysis is a first
approximation, assuming steady state conditions with
many parameters time and space averaged, but is
justified by the findings that monetary savings
approaching 5% of the annual energy bill could be made
with changes to operational procedures alone.
As a result of this work, it was revealed that
the boiler-house supplying the majority of the plant
with high pressure hot water for process and space
heating requirements used more than half of the total
annual energy requirements and that potential energy
savings were likely.
Secondly, a detailed analysis of the energy used
by the boiler-house is- carried out. A real time
monitoring and targeting system which records and
displays boiler, environmental and plant parameters is
developed and installed. Data gathered over a period of
six months enables (i) specific cases of energy wastage
resulting from operational procedures to be identified
and (ii) trends of performance indicating poor energy
efficiency to be traced. The system developed may be
used to provide the information necessary to enable
improved control.
A general result which may be inferred from this
work would be that the combined approaches of a topdown
general analysis and a bottom-up detailed analysis
of energy use can provide significant opportunities for
energy conservation resulting solely from the improved
operation of large energy consuming plant.
The work was performed at a major manufacturing
plant in the U. K. with an annual energy consumption of
the order of 600 gigawatt-hours and an annual energy
bill of the order of E10 million. |
en_UK |