Exergy available energy is the thermodynamic measure of usefulness
of any energy form. Typically, it is denoted by energy level and in
a broad sense, it is denoted by temperature or pressure of a fluid.
However, there are several manifestations of exergy concentration
difference, or affinity towards a common component can lead to large
energy transfer. Cooling tower is the best example where water at
lower temperature than dry bulb temperature of air transfer energy
to air and gets further cooled. This would be against laws of
thermodynamic if we stick to the conventional energy level concepts
During the process, we loose several such opportunities of useful
energy transfer due to lack of proper analysis ECPL has devised a
specific methodology for capturing these potential energy gains.
These mere concepts are used to standardize certain products /
system
The Exergy Audit goes way beyond the conventional utility
performance evaluation and provides dimensions of energy management
that are still uncaptured. It separates processes from each other by
the available energy content and also measures the availability loss
during the process operation. If available energy (exergy) loss has
accrued, than the process can be modified to extract useful energy
out of it. Some of the applications of exergy products are
Caustic dilution refrigeration system
Vapour absorption heat pumps
Thermo compressors
Mechanical vapour re-compressors etc.
ECPL shall provide a detailed report with analysis
of exergy loss points and potential for achieving energy cost
reduction through improvement in exergy efficiency of the system.
The principle of exergy can apply to any and all chemical process
and unit operations like
Drying
Exothermic and Endothermic reactions
Distillation
Evaporation
Any operation that involves heating, cooling, phase change even
chemical concentration change can use exergy principles for energy
conservation
|
