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The effect of simplifying the building description on the numerical modeling of its thermal performance

Description: A thermal building simulation program is a numerical model that calculates the response of the building envelopes to weather and human activity, simulates dynamic heating and cooling loads, and heating and cooling distribution systems, and models building equipment operation. The scope of the research is to supply the users of such programs with information about the dangers and benefits of simplifying the input to their models. The Introduction describes the advantages of modeling the heat tra… more
Date: July 1, 1993
Creator: Stetiu, C.
Partner: UNT Libraries Government Documents Department
open access

Thermal performance of phase change wallboard for residential cooling application

Description: Cooling of residential California buildings contributes significantly to electrical consumption and peak power demand mainly due to very poor load factors in milder climates. Thermal mass can be utilized to reduce the peak-power demand, downsize the cooling systems, and/or switch to low-energy cooling sources. Large thermal storage devices have been used in the past to overcome the shortcomings of alternative cooling sources, or to avoid high demand charges. The manufacturing of phase change ma… more
Date: April 1, 1997
Creator: Feustel, H.E. & Stetiu, C.
Partner: UNT Libraries Government Documents Department
open access

Radiant cooling in US office buildings: Towards eliminating the perception of climate-imposed barriers

Description: Much attention is being given to improving the efficiency of air-conditioning systems through the promotion of more efficient cooling technologies. One such alternative, radiant cooling, is the subject of this thesis. Performance information from Western European buildings equipped with radiant cooling systems indicates that these systems not only reduce the building energy consumption but also provide additional economic and comfort-related benefits. Their potential in other markets such as th… more
Date: January 1998
Creator: Stetiu, C.
Partner: UNT Libraries Government Documents Department
open access

Development of a model to simulate the performance of hydronic radiant cooling ceilings

Description: A significant amount of the electrical energy used to cool non-residential buildings equipped with all-air systems is drawn by the fans that transport the cool air through the thermal distribution system. Hydronic radiant cooling systems have the potential to reduce the amount of air transported through the building by separating the tasks of ventilation and thermal conditioning. Because of the physical properties of water, hydronic radiant cooling systems can transport a given amount of therma… more
Date: June 1, 1995
Creator: Stetiu, C. & Feustel, H.E.
Partner: UNT Libraries Government Documents Department
open access

Development of a simulation tool to evaluate the performance of radiant cooling ceilings

Description: Considerable electrical energy used to cool nonresidential buildings equipped with All-Air Systems is drawn by the fans that transport the cool air through the thermal distribution system. Hydropic Cooling Systems have the potential to reduce the amount of air transported through the building by separating the tasks of ventilation and thermal conditioning. Due to the physical properties of water, Hydropic Cooling Systems can transport a given amount of thermal energy using less than 5% of the o… more
Date: June 1, 1995
Creator: Stetiu, C.; Feustel, H.E. & Winkelmann, F.C.
Partner: UNT Libraries Government Documents Department
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