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The energy recovery plant converts the chilled water potential
energy into electrical power. The energy recovery plant consists on
the: -
- Turbine-Generator unit.
- Electrical transforming arrangement.
- Fluid conveying & control arrangement.
- Plant room (excavation, civil, etc.)
- Auxiliaries (crane, power, water, air, safety, etc.).
Note! The turbine's feed column and the turbine's reservoir are
included in the Fluid conveying & control arrangement.
The cost savings, achieved by utilising an energy recovery plant, is
attributed mainly to the: -
- Turbine plant's power recovery at an overall efficiency of 60%,
from the total available potential energy.
- Refrigeration plant's power recovery due to prevention of
temperature rising of 2.35OC per 1000m head, when utilising the
turbine in a chilled water conveying system.
The running costs of the turbine plant are significant, especially
with high-pressure installations, and should be considered when the
payback period is calculated. These costs are significant and
consist mainly on the: -
- Preventative maintenance.
- Repair & overhauls.
- Management & supervision.
- Skilled & semi-skilled labour.
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