- e-News #74: Combined Heat and Power
or it may be old and
inefficient. Either way, the electricity used in the building
will likely be produced with inherent inefficiencies. The
efficiency of fossil fuel based electricity production averages 34%
(although new combined cycle plants can exceed 50% efficiency). The
ultimate efficiency of any building pulling electricity from the
grid is limited by that number.
- Design Brief: Centrifugal Pump Application and Optimization
perform many important functions to control the
built environment. The physics and basic mechanics of pumps have
not changed substantially in the last century.
- Design Brief: Drivepower
use of a drivepower system-which includes the motor, its controls,
and the connection between the motor and the equipment it
drives-designers need to consider how these components operate as a
system rather than looking at them on an individual basis.
- Design Brief: Industrial Process Heat Recovery
in the industrial and
manufacturing sectors, and it often results in a large amount of
waste heat that is discharged into the atmosphere.
- Design Brief: Pumping System Troubleshooting
encountered in existing buildings during retro-commissioning
- Design Brief: Demand Response
that encourages customers to reduce or shift their
electric power usages under certain conditions to help utilities to
overcome temporary constraints in the electricity supply.
- Case Studies: Wastewater Treatment Plant Achieves Energy and Resource Savings with Efficient Design
Services District (DSRSD) redesigned their plant to increase its
capacity and better serve the residents of Dublin and San Ramon.
The plant's engineers worked with PG&E staff under the auspices
of a statewide investor-owned utility sponsored energy efficiency
program, Savings By Design (SBD), to analyze the plant's energy
consumption patterns and design it as efficiently as possible.
- e-News #23: Using a System Approach to Drivepower
hundreds of motors, whirring and chugging away unseen. Most of them
are used in heating, ventilating, and air conditioning applications
as drivers for fans, pumps, and air conditioning compressors.