Now showing items 1-10 of 24
Two-Phase Flow of HCFC-22 and HFC-134a through Short Tube Orifices
HCFC-22 and HFC-134a were used with short tube orifices having length to diameter ratios ranging from 5 to 20 in a 9.53 mm (3/8 in.) refrigerant line to investigate both two-phase and subcooled liquid flow entering the ...
A Methodology to Measure Retrofit Energy Savings in Commercial Buildings
Measured energy savings promote and sustain energy conservation retrofits by verifying the success of retrofits, determining pay-back schedules, guiding the selection of future retrofits and identifying opportunities for ...
The Persistence of Savings Obtained from Commissioning of Existing Buildings
The objective of this study is to investigate the reasons why the performance of mechanical systems degrades over time after commissioning and to recommend intervals at which testing should be performed to maintain the ...
Building Design and Operation for Improving Thermal Comfort in Naturally Ventilated Buildings in a Hot-Humid Climate
The goal of this research was to develop new techniques for designing and operating unconditioned buildings in a hot-humid climate that could contribute to an improvement of thermal performance and comfort condition. The ...
Reduced Order Modeling of Heat Exchangers Using High Order Finite Control Volume Models
A distributed parameter approach for dynamic modeling of heat exchangers and using it to obtain low order models have been presented in this report. The finite control volume (FCV) approach accurately captures the distributed ...
Short-term Monitoring Long-term Prediction of Energy Use in Commercial and Institutional Buildings: the SMLP Method
(Energy Systems Laboratory, 2001-05)
The Short-term Monitoring Long-term Prediction (SMLP) method is a new method for baselining, predicting and evaluating the energy performance of commercial and institutional buildings when only short-term data are available. ...
Modeling of Refrigerant Flow Through Flexible Short Tube Orifices
(Energy Systems Laboratory, 2000-08)
Single-phase flow of refrigerants R-22, R-13a, and R-41a through flexible short tube orifices with three different geometries and a range in upstream operating conditions was modeling using the finite element method, FEM. ...
An Analysis of Energy Reductions from the Use of Daylighting in Low-Cost Housing
(Energy Systems Lab, 2003-08)
An Analysis of Low Cost, Energy Efficient, Housing for Low-income Residents of How and Humid Climates
(Energy Systems Laboratory, 2004-05)
The purpose of this research is to develop methods that will enable the reduction of owning and operating costs of low-income housing in the hot-humid climates of the U. S. The objectives include investigating various ...
Development and Validation of a Computer Model for Energy-Efficient Shaded Fenestration Design
(Texas A&M University, 2000-05)
The goal of this study is to develop and validate a computerized model for an energy efficient fenestration system that can easily be incorporated into the architectural design process. This model is for the thermal ...