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Modelling Accumulation Ammonia Deposition Influenced Low Velocity in Silty Clay Formation, Industrial Layout of Port Harcourt
Issue:
Volume 2, Issue 2, March 2017
Pages:
27-35
Received:
26 October 2016
Accepted:
28 February 2017
Published:
29 March 2017
DOI:
10.11648/j.ijees.20170202.11
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Abstract: This paper evaluates the behaviour of Ammonia deposition in silty clay formation. The lithology of the formation through detailed investigation shows that the rate of hydraulic conductivity was observed to be very low in silty clay soil. the derived model were to monitor the behaviour of the soil in terms of Ammonia deposition in the study area, such conditions were monitored to have hinder the transport of Ammonia due to low deposition including permeation and void ratio of the soil, these were considered to have generated the accumulation of Ammonia in the study area. The developed model were monitored in industrial area were this substances were observed to predominantly deposited in these locations, such condition were essential to monitor and to predict the concentration rate in silty clay formation, the accumulation of this substance may migrate to porous medium and contaminate the Phreatic bed, more so, the deposited substances are known to be one of the substrate, this implies that it will definitely increase the deposition of any other microbial contaminant in the study area thus generate more contaminant in Phreatic bed. The developed model was simulated to generate theoretical values, these were compared with experimental values and both parameters express best fits validating the developed model for the study.
Abstract: This paper evaluates the behaviour of Ammonia deposition in silty clay formation. The lithology of the formation through detailed investigation shows that the rate of hydraulic conductivity was observed to be very low in silty clay soil. the derived model were to monitor the behaviour of the soil in terms of Ammonia deposition in the study area, su...
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Thermodynamic Performance Evaluation for Low Temperature Heat Source Cascade System Circulating Environment Friendly Refrigerants
Issue:
Volume 2, Issue 2, March 2017
Pages:
36-47
Received:
4 March 2017
Accepted:
13 March 2017
Published:
29 March 2017
DOI:
10.11648/j.ijees.20170202.12
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Abstract: The Cascade heat pump system is commonly used to overcome the high temperature lift problem of the system. In the present investigation eight refrigerant pairs were studied including R717/R134a, R410A/R134a, R407C/R134a, and R717/R600a, R744/R134a, R744/R290, R744/R600a, and R744/R717 at HT condenser of (70)°C and (75)°C. Hot water is to be produced at temperature range (60 to 65)°C with a proper flow demand. The evaporator temperature at the LT cycle side was ranged between (-10)°C and (-2)°C. The intermediate temperatures at the cascade heat exchanger were (20, 22.5, 33, and 35)°C depending on the refrigerant pairs implemented in the Cascade heat pump. Sea water at (7)°C was used as a sustainable low temperature heat source and 30% ethylene glycol-water brine as a thermal fluid carrier for heat extraction. The evaluation of the thermal performance of the refrigerant pairs was based on a fixed heat pump extraction load at the LT cycle evaporator. The R744/R134a and R744/R290 systems revealed the highest heat pump heating load production and highest compressors power consumption accompanied with the lowest COP at (20)°C intermediate temperature and HT condensation of (75)°C. R717/R600a showed the highest COP and lowest power consumption at (35)°C intermediate temperature and HT condensation of (70)°C. The results also revealed that a band of refrigerant pairs occupied the central zone of COP range with acceptable value; they are R410A/R134a, R407C/R134a and R744/R717.
Abstract: The Cascade heat pump system is commonly used to overcome the high temperature lift problem of the system. In the present investigation eight refrigerant pairs were studied including R717/R134a, R410A/R134a, R407C/R134a, and R717/R600a, R744/R134a, R744/R290, R744/R600a, and R744/R717 at HT condenser of (70)°C and (75)°C. Hot water is to be produce...
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Modelling and Simulation to Monitor Porosity Effect on Phosphorus Deposition in a Uniform Fine Sand Formation, Sapelle, Delta State of Nigeria
Issue:
Volume 2, Issue 2, March 2017
Pages:
48-55
Received:
26 October 2016
Accepted:
28 February 2017
Published:
7 April 2017
DOI:
10.11648/j.ijees.20170202.13
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Abstract: The paper investigate the deposition of phosphorus through the lithology of the environment, thus examine their transport processes, it also expresses the behaviour of the micronutrient in uniform coarse formation, the rate of migration was monitored in terms of the concentrations in predominant homogeneous fine sand formations, this study was found imperative because of high rate of phosphorus concentration at different predominant homogeneous depositions, such conditions were critically evaluated to determine the cause of fast deposition and migration, the derived model was generated through the developed governing equation, the developed model was simulated to produce theoretical values, the system generated several linearized migrating processes, but with different concentrations. The theoretical values were compared with experimental data for model validation, both parameters express favourable fits, the study is imperative because the uniformity of fine sand formation has generated various rate of concentration including their transport processes. Experts will definitely apply this concept to observe various rate of phosphorus concentration in soil and water environment.
Abstract: The paper investigate the deposition of phosphorus through the lithology of the environment, thus examine their transport processes, it also expresses the behaviour of the micronutrient in uniform coarse formation, the rate of migration was monitored in terms of the concentrations in predominant homogeneous fine sand formations, this study was foun...
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