Browsing ESL Theses and Dissertations by Issue Date
Now showing items 1-20 of 66
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An Expert System for the Analysis of Building Energy Consumption, Doctoral Disseration
(University of Colorado, 1986-07)This work concludes six years of energy conservation studies performed for the University of Colorado Student Recreation Center. The studies began late in 1980 when the University of Colorado Student Administrators asked ... -
The Effect of Alternate Defrost Strategies on the Reverse-Cycle Defrost of an Air-Source Heat Pump
(Texas A&M University, 1988)Not available -
The Effects of Expansion Devices on the Transient Response Characteristics of the Air-Source Heat Pump during the Reverse Dycle Defrost
(Texas A&M University, 1988)Not available -
The Effects of Frost Growth on Finned Tube Heat Exchangers under Laminar Flow
(Texas A&M University, 1988-12)A study on the effects of frost growth on the performance of finned tube heat exchangers under laminar flow has been conducted. The study was both experimental and analytical. The experimental part of the investigation ... -
A Study of Transient Behavior During Start-Up of Residential Heat Pumps
(1989-12)An experimental and analytical study concerned with the transient performance of heat pumps is presented. A series of tests were performed to study and characterize the transient sensible and dehumidification performance ... -
Modeling the Effects of Refrigerant Charging on Air Conditioner Performance Characteristics For Three Expansion Devices
(1990-08)An experimental and analytical study concerned with the off-design refrigerant charging of air conditioners is presented. A series of experiments were conducted to characterize the effects of refrigerant charge and type ... -
Influence of Dust on the Emissivity of Radiant Barriers
(Texas A&M University, 1991)Not available -
The Measured Energy Impact of Air Leakage on Frame Wall Systems
(Texas A&M University, 1991-05)Infiltration is customarily assumed to increase the heating and cooling load of a building by an amount equal to the mass flow rate of the infiltration times the enthalpy difference between the inside and outside air - ... -
Study of Air Infiltration Energy Consumption
(1992-08)The influence of heat recovery on the energy impact of air infiltration, and the systematic error due to the steady-state method were studied both experimentally and theoretically. Two methodologies suitable for measurement ... -
Monitoring the Performance of a Residential Central Air Conditioner under Reduced Evaporator Air Flow on a Test Bench
(Texas A&M University, 1992-11)This report presents results from degraded performance measurements of a residential air conditioning system operating under reduced evaporator air flow. Experiments were conducted using a R-22 three-ton split-type cooling ... -
Development of a Transient Heat and Mass Transfer Model of Residential Attics to Predict Energy Savings Produced by the Use of Radiant Barriers
(Energy Systems Laboratory (http://esl.tamu.edu), 1992-12)A transient heat and mass transfer model was developed to predict ceiling heat gain/loss through the attic space in residences and to accurately estimate savings in cooling and heating loads produced by the use of radiant ... -
The Impact of Charge on Performance of an Air-to-Air Heat Pump for R22 and Three Binary Blends of Refrigerants 32 and 134A
(Texas A&M University, 1993)Not available -
Energy Conservation Opportunities in Commercial and Industrial Facilities: Energy Utilization Indices (EUI) in Texas LoanSTAR Buildings
(Texas A&M University, 1993-08)The work described in this report was performed under the direction of the Energy Analysis and Diagnostic Center (EADC) at Texas A&M University. The EADC program is managed by University City Science Center under agreement ... -
The Influence of Dust on the Absorptivity of Radiant Barriers
(1993-08)The purpose of this project was to model and quantify the increase of the absorptivity of radiant barriers caused by the accumulation of dust on the surface of radiant barriers. This research was the continuation of a ... -
An Analysis of Grocery Store Energy Use
(Texas A&M University, 1993-12)Approximately 3% of the United States' commercial building energy consumption is attributable to food sales facilities. Although this is one of the smallest consumption percentages, it is still significant, amounting to ... -
Numerical Modeling of the Transient Thermal Interference of Vertical U-Tube Haet Exchangers
(1994-12)Non-linear finite element models were developed to simulate transient heat and mass transfer in the soil surrounding the ground heat exchangers of ground-coupled heat pumps (GCHPs) operating in the cooling mode. Parametric ... -
Analysis of Mass Flow and Enhanced Mass Flow Methods of Flashing Refrigerant-22 from a Small Vessel
(1994-12)The mass flow characteristics of flashing Refrigerant-22 from a small vessel were investigated. A flash boiling apparatus was designed and built. It was modeled after the flashing process encountered by the accumulator of ... -
An Experimental Investigaton of the Effect of Oil on Convective Heat Trasfer and Pressure Drop of a HFC-32/HRC-125 Mixture
(1994-12)The heat transfer coefficients and pressure drops of HCFC-22 and a 50% mass mixture of HFC-32/HFC-125 were experimentally measured under flow boiling conditions in a smooth tube. The refrigerants were flowed through an 8 ... -
An Improved Procedure for Developing a Calibrated Hourly Simulation Model of an Electrically Heated and Cooled Commercial Buildling
(Energy Systems Laboratory, 1994-12)With the increased use of building energy simulation programs, calibration of simulated data to measured data has been recognized as an important factor in substantiating how well the model fits a real building. Model ... -
Effect of Refrigerant Charge, Duct Leakage, and Evaporator Air Flow on the High Temerature Performance of Air Conditioners and Heat Pumps
(Texas A&M University, 1995)An experimental study was conducted to quantify the effect of several installation items on the high outdoor ambient temperature performance of air conditioners. These installation items were: improper amount of refrigerant ...