The Experts below are selected from a list of 108 Experts worldwide ranked by ideXlab platform

Charles R. Krause - One of the best experts on this subject based on the ideXlab platform.

  • SPRAY CHARACTERISTICS AND DRIFT REDUCTION POTENTIAL WITH AIR INDUCTION AND CONVENTIONAL FLAT-FAN NOZZLES
    Transactions of the ASABE, 2007
    Co-Authors: Huseyin Guler, Heping Zhu, H. Erdal Ozkan, R. C. Derksen, Charles R. Krause
    Abstract:

    Spray drift potential, spray coverage, droplet size, and spray pattern width for various sizes of air induction and conventional flat-fan nozzles with Equivalent Orifice areas were investigated and compared under laboratory conditions. Droplet sizes were measured with a laser imaging system; spray coverage on water-sensitive paper (WSP) was evaluated with a boom sprayer at a constant travel speed in a greenhouse, and ground and airborne spray deposits were determined in a wind tunnel at two wind velocities (2.5 and 5.0 m/s). Tests were also conducted to evaluate the effect of air-intake holes being sealed or open on spray characteristics of air induction nozzles. With the Equivalent nominal flow rate, air induction nozzles had approximately 2.1 to 2.75 times larger exit Orifice areas than the conventional nozzles. With the Equivalent Orifice area and equal liquid flow rate, there was no significant difference in droplet size, spray pattern width, spray coverage, ground spray deposit, and airborne deposit among regular air induction nozzles, air induction nozzles with two sealed air-intake holes, and conventional flat-fan nozzles. Spray characteristics of air induction nozzles could be achieved by conventional nozzles with the Equivalent Orifice size operated at the reduced operating pressure.

  • Spray Characteristics and Wind Tunnel Evaluation of Drift Reduction Potential with Air Induction and Conventional Flat Fan Nozzle
    2006 Portland Oregon July 9-12 2006, 2006
    Co-Authors: Huseyin Guler, Heping Zhu, H. Erdal Ozkan, R. C. Derksen, Charles R. Krause
    Abstract:

    Spray drift potential, spray coverage, droplet size, and spray pattern width for various sizes of air induction and conventional flat fan nozzles with Equivalent Orifice areas were investigated and compared under the laboratory conditions. Droplet sizes were measured with a laser imaging system, spray coverage on water sensitive papers (WSP) was evaluated with a boom sprayer at a constant travel speed in a greenhouse, and ground and airborne spray deposits were determined in a wind tunnel at two wind velocities (2.5 and 5 m/s). Tests were also conducted to evaluate the effect of air intake holes being closed or open on spray characteristics of air induction nozzles. With the Equivalent nominal flow rate, air induction nozzles had approximately 2.1 to 2.75 times larger exit Orifice areas than the conventional nozzles. With the Equivalent Orifice area and equal liquid flow rate, there was no significant difference in droplet size, spray pattern width, spray coverage, ground spray deposit, and airborne deposit among regular air induction nozzles, the air induction nozzles with two sealed air holes, and conventional flat fan nozzles. Spray characteristics of air induction nozzles could be achieved by conventional nozzles with the Equivalent Orifice size operated at the pressure below the manufacturer’s recommended pressure range.

Zhou Dongyi And Shi Chuping - One of the best experts on this subject based on the ideXlab platform.

  • Research on Index for Assessment of Mine Ventilation Capability
    Advance Journal of Food Science and Technology, 2015
    Co-Authors: Zhou Dongyi And Shi Chuping
    Abstract:

    In order to perfect the current index Equivalent Orifice for assessment of coal mine ventilation capability checking, we put forward a new evaluation methodology to accomplish this aim based on existing research and the present practical conditions in China. In addition, indexes for calculating reasonable values of Equivalent Orifice for all kinds of mine ventilation systems are given. The new way is more reasonable and scientific by example. Equivalent Orifice equation is analyzed and then it can be found that for the mines with different ventilation systems the calculation methods of total Equivalent Orifice and total windage are different. Equivalent Orifice calculation needs the total amount of the return air in the mine; total windage is calculated according to the specific form of ventilation.

Huseyin Guler - One of the best experts on this subject based on the ideXlab platform.

  • SPRAY CHARACTERISTICS AND DRIFT REDUCTION POTENTIAL WITH AIR INDUCTION AND CONVENTIONAL FLAT-FAN NOZZLES
    Transactions of the ASABE, 2007
    Co-Authors: Huseyin Guler, Heping Zhu, H. Erdal Ozkan, R. C. Derksen, Charles R. Krause
    Abstract:

    Spray drift potential, spray coverage, droplet size, and spray pattern width for various sizes of air induction and conventional flat-fan nozzles with Equivalent Orifice areas were investigated and compared under laboratory conditions. Droplet sizes were measured with a laser imaging system; spray coverage on water-sensitive paper (WSP) was evaluated with a boom sprayer at a constant travel speed in a greenhouse, and ground and airborne spray deposits were determined in a wind tunnel at two wind velocities (2.5 and 5.0 m/s). Tests were also conducted to evaluate the effect of air-intake holes being sealed or open on spray characteristics of air induction nozzles. With the Equivalent nominal flow rate, air induction nozzles had approximately 2.1 to 2.75 times larger exit Orifice areas than the conventional nozzles. With the Equivalent Orifice area and equal liquid flow rate, there was no significant difference in droplet size, spray pattern width, spray coverage, ground spray deposit, and airborne deposit among regular air induction nozzles, air induction nozzles with two sealed air-intake holes, and conventional flat-fan nozzles. Spray characteristics of air induction nozzles could be achieved by conventional nozzles with the Equivalent Orifice size operated at the reduced operating pressure.

  • Spray Characteristics and Wind Tunnel Evaluation of Drift Reduction Potential with Air Induction and Conventional Flat Fan Nozzle
    2006 Portland Oregon July 9-12 2006, 2006
    Co-Authors: Huseyin Guler, Heping Zhu, H. Erdal Ozkan, R. C. Derksen, Charles R. Krause
    Abstract:

    Spray drift potential, spray coverage, droplet size, and spray pattern width for various sizes of air induction and conventional flat fan nozzles with Equivalent Orifice areas were investigated and compared under the laboratory conditions. Droplet sizes were measured with a laser imaging system, spray coverage on water sensitive papers (WSP) was evaluated with a boom sprayer at a constant travel speed in a greenhouse, and ground and airborne spray deposits were determined in a wind tunnel at two wind velocities (2.5 and 5 m/s). Tests were also conducted to evaluate the effect of air intake holes being closed or open on spray characteristics of air induction nozzles. With the Equivalent nominal flow rate, air induction nozzles had approximately 2.1 to 2.75 times larger exit Orifice areas than the conventional nozzles. With the Equivalent Orifice area and equal liquid flow rate, there was no significant difference in droplet size, spray pattern width, spray coverage, ground spray deposit, and airborne deposit among regular air induction nozzles, the air induction nozzles with two sealed air holes, and conventional flat fan nozzles. Spray characteristics of air induction nozzles could be achieved by conventional nozzles with the Equivalent Orifice size operated at the pressure below the manufacturer’s recommended pressure range.

Hang X - One of the best experts on this subject based on the ideXlab platform.

  • Ventilation difficulty degree valuation analysis for the developing coal mine
    Inner Mongolia Coal Economy, 2010
    Co-Authors: Hang X
    Abstract:

    In order to accurately evaluation the developing coal mine of ventilation difficulty degree,Based on Characteristic of the developing coal mine of ventilation,divided into two grades with the new method.Each grade could reset the size of the Equivalent Orifice in order to reflect the ventilation difficulty degree.The results showed that the new standard could be effective to solve the evaluation on difficult problems for the ventilation of developing coal mine with high ventilation volume at present.

Guan Wan-li - One of the best experts on this subject based on the ideXlab platform.

  • A New Way of Coal Mine Ventilation Capability Checking
    2007
    Co-Authors: Guan Wan-li
    Abstract:

    In order to perfect the current way of coal mine ventilation capability checking,we put forward a new way to accomplish this aim.The new way uses Equivalent Orifice of coal mine to validate the power of mine ventilation for the first time and calculates the maximally allowed yield of working face according to the limit of methane concentration and temperature condition. The new way is more reasonable and scientific.