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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 ...
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 ...
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 ...
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 ...
Building Design and Operation for Improving Thermal Comfort in Naturally Ventilated Buildings in a Hot-Humid Climate
(2007-11-29)
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 ...
Effects of Hydrophobic Surface Treatments on Dropwise Condensation and Freezing of Water
(Texas A&M University, 1995-12)
The effects of hydrophobic coatings on the dropwise condensation process for a flat horizontal copper plate held at a temperature much lower than the surrounding air
was investigated. Extensive qualitative and quantitative ...
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 Investigation on Heat Transfer During the Freezing of Condensate Droplets
(Texas A&M University, 1996-05)
The heat transfer and the freezing process of condensate droplets resting on a cold metal plate have been studied both experimentally and numerically.
The experimental part of the investigation dealt with the measurements ...
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 - ...