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Air Handling Unit Supply Air Temperature Optimization During Economizer Cycles
(Texas A&M University (http://www.tamu.edu)Energy Systems Laboratory (http://esl.tamu.edu), 2007)
Most air handling units (AHUs) in commercial buildings have an air economizer cycle for free cooling under certain outside air conditions. During the economizer cycle, the outside air and return air dampers are modulated ...
Demand-based Optimal Control to Save Energy: A Case-Study in a Medical Center
(Energy Systems Laboratory, 2008-12)
Continuous Commissioning®1 (CC®) strategies include reducing simultaneous heating and cooling, scheduling the facility’s occupancy needs, utilizing free cooling, and minimizing excessive supply air and outside air. Most ...
Optimal Control in Three-deck Multi-Zone Air-Handling Units: A Case-Study
(Energy Systems Laboratory, 2008-12)
A multi-zone air-handling unit was popular several decades ago due to the convenience of small sized modular units, which were inexpensive to install and easily maintained in a mechanical room. The cost and convenience ...
Performance Analysis of Dual-Fan, Dual-Duct Constant Volume Air-Handling Units
(Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2001)
Dual-fan, dual-duct air-handling units introduce
outside air directly into the cooling duct and use two
variable speed devices to independently maintain the
static pressure of the hot and the cold air ducts.
Analytical ...
Impacts of Static Pressure Reset on VAV System Air Leakage, Fan Power and Thermal Energy - Part I: Theoretical Model and Simulation
(Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2007)
As for a variable air volume (VAV) system, the air duct static pressure is a typical control variable maintained by modulating supply fan speed. The static pressure equals to the summation of the duct pressure loss downstream ...
Achieving High Chilled Water Delta T Without Blending Station
(Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2007)
Typically a blending station is designed to ensure that its user is able to avoid low chilled water return temperature in the district cooling system. When the chilled water return temperature drops to a low limit, building ...
Economizer Control Using Mixed Air Enthalpy
(Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2007)
Enthalpy economizer can theoretically save more energy than temperature based economizer. However, the requirement of outdoor air humidity measurement in the traditional enthalpy economizer control made it impossible. A ...
Implementation of the Laboratory Air Handling Unit Systems (LAHU)
(Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2003)
The LAHU system has been designed,
installed, and commissioned in a large university
research building. This paper provides detailed
information about the demonstration project,
including the specific LAHU system ...
Simulation and Optimization on Power Plant Operation Using Sega's EOP Program
(Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2000)
The operation of a cogeneration power plant is
complicated. The Energy Optimization Program
(EOP, software made by SEGA, Inc.) was designed
to simulate and optimize the operation of TAMU
power plant. All major plant ...
Commissioning of A Large Office Building in Texas - A Case Study
(Energy Systems Laboratory (http://esl.tamu.edu)Texas A&M University (http://www.tamu.edu), 2000)
This case study involves commissioning of a
large office building in the hot and humid climate of
south Texas. The commissioning involved the
installation of a VFD (Variable Frequency Drive) on
a chilled water pump, improved ...