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Articles 1 - 7 of 7
Full-Text Articles in Engineering
Performance Study On Evacuated Tubular Collector Coupled Solar Still In West Texas Climate, Roy Issa, Byungik Chang
Performance Study On Evacuated Tubular Collector Coupled Solar Still In West Texas Climate, Roy Issa, Byungik Chang
Civil Engineering Faculty Publications
Experimental study was performed on a single basin active solar distillation system augmented with a solar collector using evacuated solar tubes. Field tests were conducted over several days under the climatic conditions of West Texas to evaluate the effect evacuated solar tubes have on the daily distillate yield rate. To investigate the feasibility of the solar tubes, active and passive solar stills with and without exterior insulation were examined. The maximum daily production rate for the active distillation system using evacuated solar tubes and the passive distillation system was 3.6 and 1.4 kg/m2day, respectively. The results showed the …
Vulnerability Of Coastal Connecticut To Sea Level Rise: Land Inundation And Impacts To Residential Property, Rebecca Andreucci, Can B. Aktas
Vulnerability Of Coastal Connecticut To Sea Level Rise: Land Inundation And Impacts To Residential Property, Rebecca Andreucci, Can B. Aktas
Civil Engineering Faculty Publications
Vulnerability indices at the global or national scales require considerable data aggregation where local economic and social impacts remain unnoticed. The goal of this study was to analyze the extent of inundated land from sea level rise and its economic impacts to residential property in coastal communities. Geographic data were integrated with economic and social data at parcel level resolution through GIS. Cumulative land inundation in seven coastal municipalities was calculated as 15 and 25 km2, while direct economic costs to residential property was estimated to be $1.3 billion and $2.2 billion for 1 and 2 m sea …
Application Of Gis To Prioritize Brownfield Sites For Green Building Construction Based On Leed Criteria, Can B. Aktas, Paul Bartholomew, Sabrina Church
Application Of Gis To Prioritize Brownfield Sites For Green Building Construction Based On Leed Criteria, Can B. Aktas, Paul Bartholomew, Sabrina Church
Civil Engineering Faculty Publications
Although there are many initiatives to create incentives for investors and developers to invest in and redevelop brownfield sites, efficient prioritization of brownfields by taking into account environmental, economic, and social constraints remains a challenge. This study introduces a method to screen numerous brownfields over large geographic areas by using geographic information systems (GIS) and to assess and prioritize such sites for green building suitability based on leadership in energy and environmental design (LEED) criteria. A case study was completed for the greater Bridgeport, Connecticut region. With 279 brownfield sites, the city has among the highest number of brownfields in …
Life Cycle Environmental And Economic Performance Of Biochar Compared With Activated Carbon: A Meta-Analysis, Hashim A. Alhashimi, Can B. Aktas
Life Cycle Environmental And Economic Performance Of Biochar Compared With Activated Carbon: A Meta-Analysis, Hashim A. Alhashimi, Can B. Aktas
Civil Engineering Faculty Publications
As the commercial production and distribution of biochar continues to grow internationally, and its applications diversifying from its early uses as soil amendment, it is important to study the environmental impacts and economic performance of biochar in comparison to activated carbon in order to assess its value. The goal of the study was to assess, through a meta-analysis, the environmental and economic performance of biochar in comparison to activated carbon under an equivalent functional unit to adsorb heavy metals. More than 80 data points on adsorption capacity of biochar and activated carbon were identified through literature, which were statistically analyzed …
Quality Improvement Of Acidic Soils By Biochar Derived From Renewable Materials, Deok Hyun Moon, Inseong Hwang, Yoon-Young Chang, Agamemnon Koutsospyros, Kyung Hoon Cheong, Won Hyun Ji, Jeong Hun Park
Quality Improvement Of Acidic Soils By Biochar Derived From Renewable Materials, Deok Hyun Moon, Inseong Hwang, Yoon-Young Chang, Agamemnon Koutsospyros, Kyung Hoon Cheong, Won Hyun Ji, Jeong Hun Park
Civil Engineering Faculty Publications
Biochar derived from waste plant materials and agricultural residues was used to improve the quality of an acidic soil. The acidic soil was treated for 1 month with both soy bean stover-derived biochar and oak-derived biochar in the range of 1 to 5 wt% for pH improvement and exchangeable cation enhancement. Following 1 month of treatment, the soil pH was monitored and exchangeable cations were measured. Moreover, a maize growth experiment was performed for 14 days with selected treated soil samples to confirm the effectiveness of the treatment. The results showed that the pH of the treated acidic soil increased …
System-Dynamics Modeling Of Source Mass-Depletion And Risk-Exposure Evolution For Natural Attenuation Processes In The Vadose Zone, Aspasia Kalomoiri, Agamemnon Koutsospyros, Washington Braida, Julius Pavlov
System-Dynamics Modeling Of Source Mass-Depletion And Risk-Exposure Evolution For Natural Attenuation Processes In The Vadose Zone, Aspasia Kalomoiri, Agamemnon Koutsospyros, Washington Braida, Julius Pavlov
Civil Engineering Faculty Publications
Public health is potentially at risk after a contaminant of concern (COC) is released into the ecosphere. The extent of contamination depends on numerous factors; modeling a contaminant’s dynamic behavior is challenging, given the multitude of relevant parameters and the fluid nature of processes involved. For example, weather events (e.g., wet or dry periods) may affect the mass depletion and the fate and transport of COCs, and hence, the risk assessment of current and potential future exposures. Thus, to give realistic estimates for potential risks, a contaminant’s dynamic behavior must be taken into account in decision-making processes. In this paper, …
Freeze-Thaw Durability Of Concrete Columns Wrapped With Frp And Subject To Corrosion-Like Expansion, Ronald S. Harichandran, M.I. Baiyasi, G. Nossoni
Freeze-Thaw Durability Of Concrete Columns Wrapped With Frp And Subject To Corrosion-Like Expansion, Ronald S. Harichandran, M.I. Baiyasi, G. Nossoni
Civil Engineering Faculty Publications
Experiments were conducted to assess the effects of using fiber-reinforced polymer (FRP) wraps, with fibers oriented in the hoop direction, for rehabilitating corrosion-damaged columns. This paper reports findings related to the freeze-thaw durability of concrete specimens with round and square cross sections, wrapped with glass and carbon FRP, after they are subjected to an internal expansive force similar to that generated by corroding steel. The results of the experiment indicate that freeze-thaw cycles have no statistically significant effect on the compressive strength of glass- and carbon-wrapped specimens. Freeze-thaw conditioning generally reduced the longitudinal failure strain of wrapped specimens. The square …