Heat pumps are a vital part of each building for their role in keeping the space conditioned for the occupant. This study focuses on developing a model for the ground-source heat pump at the Zero Energy lab at the University of North Texas, and finding the minimum data required for generating the model. The literature includes many models with different approaches to determine the performance of the heat pump. Each method has its pros and cons. In this research the equation-fit method was used to generate a model based on the data collected from the field. Two experiments were conducted for the cooling mode: the first one at the beginning of the season and the second one at the peak of the season to cover all the operation conditions. The same procedure was followed for the heating mode. The models generated based on the collected data were validated against the experiment data. The error of the models was within ±10%. The study showed that the error could be reduced by 20% to 42% when using the field data to generate the model instead of the manufacturer’s catalog data. Also it was found that the minimum period to generate the cooling …

Monthly newspaper providing news and information to the Tarrant, Dallas, and Denton County Latino communities along with advertising.

Monthly newspaper providing news and information to the Tarrant, Dallas, and Denton County Latino communities along with advertising.

Monthly newspaper providing news and information to the Tarrant, Dallas, and Denton County Latino communities along with advertising.

Monthly newspaper providing news and information to the Tarrant, Dallas, and Denton County Latino communities along with advertising.

Monthly newspaper providing news and information to the Tarrant, Dallas, and Denton County Latino communities along with advertising.

Monthly newspaper providing news and information to the Tarrant, Dallas, and Denton County Latino communities along with advertising.

Monthly newspaper providing news and information to the Tarrant, Dallas, and Denton County Latino communities along with advertising.

Monthly newspaper providing news and information to the Tarrant, Dallas, and Denton County Latino communities along with advertising.

Monthly newspaper providing news and information to the Tarrant, Dallas, and Denton County Latino communities along with advertising.

Monthly newspaper providing news and information to the Tarrant, Dallas, and Denton County Latino communities along with advertising.

Monthly newspaper providing news and information to the Tarrant, Dallas, and Denton County Latino communities along with advertising.

Bumble bees (Bombus spp.) are adept pollinators of countless cultivated and wild flowering plants, but many species have experienced declines in recent decades. Though urban sprawl has been implicated as a driving force of such losses, urban green spaces hold the potential to serve as habitat islands for bumble bees. As human populations continue to grow and metropolitan areas become larger, the survival of many bumble bee species will hinge on the identification and implementation of appropriate conservation measures at regional and finer scales. North Texas is home to some the fastest-growing urban areas in the country, including Denton County, as well as at least two declining bumble bee species (B. pensylvanicus and B. fraternus). Using a combination of field , molevular DNA and GIS methods I evaluated the persistence of historic bumble bee species in Denton County, and investigated the genetic structure and connectivity of the populations in these spaces. Field sampling resulted in the discovery of both B. pensylvanicus and B. fraternus in Denton County's urban green spaces. While the relative abundance of B. fraternus in these spaces was significantly lower than historic levels gleaned from museum recors, that of B. pensylvanicus was significantly higher. Statistical analyses found …

Representatives of the City of Highland Village expressed concern over the risk of wildfires for their community. Anthropology provides many tools for and examples of disaster assessment of preparedness, response, recovery, and mitigation. These tools combined with Geographic Information Systems (GIS) can provide a holistic, cultural ecological look at how such a disaster may take place in the city. The project's methods included a detailed survey of preparedness steps which was analyzed using SPSS and also imported into ArcGIS for spatial analysis, and semi-formal, in-depth interviews with residents of the community regarding preparedness, response, and recovery. Residents fell into a middle category of preparedness, with the majority of participants considering or implementing a few recommended preparedness steps. Interview participants expressed respect for and trust of the city and first-responders, as well as a willingness to volunteer their help during response and recovery stages. Finally the American Community Survey showed that resident socioeconomic vulnerability was considerably low, and no action needed to be taken to advocate for at-risk individuals. Overall, the City of Highland Village showed a high resiliency to disaster. A wildfire likely will not have a major impact on the community as a whole, though the city may reduce …

The following report chronicles the University of North Texas Wind Turbine Project at Apogee Stadium. The timeline of events will include the feasibility study conducted by and for the university, grant awards from the Texas State Energy Conservation Office to fund the project, and a three-year sample of real time performance data since installation. The purpose of this case study is to compare the energy generation estimates by various stakeholders to the measured energy generation using a new but uniform performance relationship. In order to optimize energy generation in wind turbine generator systems, the most common wind speeds measured at the site should also be the most efficient wind speeds at which the wind turbine can convert the kinetic energy in the wind into mechanical energy and ultimately electrical energy. The tool used to convey this relationship will be a figure plotting the wind speed profile against the efficiency curve of the wind turbine. Applying this relationship tool to the UNT Apogee Stadium wind turbines provided valuable results. The most common wind speeds at Apogee Stadium are not the most efficient wind speed for the turbine. Also, the most common wind speeds were near the lower limit of the wind …

Daily newspaper from Denton, Texas that includes local, state, and national news along with advertising.

Daily newspaper from Denton, Texas that includes local, state, and national news along with advertising.

Daily newspaper from Denton, Texas that includes local, state, and national news along with advertising.

Daily newspaper from Denton, Texas that includes local, state, and national news along with advertising.

Daily newspaper from Denton, Texas that includes local, state, and national news along with advertising.

Daily newspaper from Denton, Texas that includes local, state, and national news along with advertising.

Daily newspaper from Denton, Texas that includes local, state, and national news along with advertising.

Daily newspaper from Denton, Texas that includes local, state, and national news along with advertising.

Daily newspaper from Denton, Texas that includes local, state, and national news along with advertising.