Case Studies:

Porterville Development Center

Situation

The Porterville Development Center is a rehabilitation and treatment center for patients of all types of illnesses and disabilities. The PDC is composed of many buildings which include residence hall; training; administrative; laundry; pool; gymnasium and auditorium building, totaling about 1,101,250 bullet feet. Lincus was called upon to prepare a Program Analysis Report to give the customer and its personnel all possibilities for energy-efficiency improvements at their center.

Solution

A total of 13 different energy-efficiency measures (EEM’s) were identified in Lincus’ energy analysis.

Office Lighting System Upgrade
Replace existing T-12 and other older T-8 generation lamps with newer generation T8’s with
XPS bulbs/PSX ballasts
Replace existing High Output Metal Halide Fixtures with High Efficiency High Bay T5 lighting
Install Occupancy Sensors on all the retrofitted High Output T-5 fixtures
Power Management software for desktop computers
Virtualization of existing servers
Installation of Misers with the existing vending machines
Install high-efficiency packaged units with differential enthalpy economizers
Replace all existing wall mounted bard units with high-efficiency packaged AC wall- mounted units
Install CO2 sensors for Demand Control Ventilation in the gymnasium and auditorium areas
Removal of the existing inlet guide vanes and installation of variable frequency drives (VFD’s) on all
the supply fans of the air handler units
Replace the existing pneumatic HVAC controls to direct digital control
Install a 30kW photovoltaic (PV) cell system over the flat roofs of the plant operations building
Make overall steam system improvements

When all recommended measures are implemented, the cumulative payback will be 4.8 years, including the utility incentives of $477,957. Also, with these new measures in place, this facility will save approximately 9.3% of total annual usage of kWh of electricity and 20% on total annual gas consumption.

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