Now showing items 1-20 of 22

  • A cryogenic Couette viscometer for the measurement of dissipation and heat transfer during solidification 

    Leachman, Jacob; Pfotenhauer, J. M.; Nellis, G. F.; Steiner, T. J. (Transactions of the Cryogenic Engineering Conference–CEC: Advances in Cryogenic Engineering, 2010)
    Viscous dissipation and the convection heat transfer coefficient are two key flow parameters that control the operation of twin‐screw solidifying extruders. This type of extruder is used to produce hydrogenic pellets that ...
  • A Hydrogen Economy for Jefferson County 

    Leachman, Jacob (Jefferson County Washington Clean Energy Luncheon, 4/21/2015)
    This presentation, given at the Jefferson County Washington Clean Energy Luncheon, describes how hydrogen could play a role in the energy economy of Washington state. The presentation covers the creation, storage, and use ...
  • Addressing Plug Power LH2 needs for expanding markets 

    Leachman, Jacob (Plug Power Executive Leadership, 2/17/2015)
    This presentation describes the potential role of liquid hydrogen in the energy economy. It considers how liquid hydrogen can work with renewable energies and describes hydrogen research at Washington State University.
  • Catalytic pressurization of liquid hydrogen fuel tanks for unmanned aerial vehicles 

    Leachman, Jacob; Street, Melissa Jean; Graham, Teira (Proceedings of the Cryogenic Engineering Conference–CEC: Advances in Cryogenic Engineering, 2012)
    As the use and applications of Unmanned Aerial Vehicles (UAV) expand, the need for a lighter weight fuel allowing for longer duration flights has become the primary limiting factor in the advancement of these vehicles. To ...
  • Cryocompressed hydrogen storage and liquid delivery 

    Leachman, Jacob (Department of Energy (DOE) Hydrogen Transmission and Distribution Workshop, 2/25/2014)
    This presentation was created for the DOE H2 Transmission and Delivery Workshop on February 26, 2014.
  • Design of a reconfigurable liquid hydrogen fuel tank for use in the Genii unmanned aerial vehicle 

    Leachman, Jacob; Adam, Patrick (Transactions of the Cryogenic Engineering Conference–CEC: Advances in Cryogenic Engineering, 2014)
    Long endurance flight, on the order of days, is a leading flight performance characteristic for Unmanned Aerial Vehicles (UAVs). Liquid hydrogen (LH2) is well suited to providing multi-day flight times with a specific ...
  • Design of a solid hydrogen target cryostat for positron moderation studies 

    Leachman, Jacob; Nixon, Chad (Proceedings of the Cryogenic Engineering Conference–CEC: Advances in Cryogenic Engineering, 2012)
    Despite the widespread use of positron technology the efficiency of positron utilization is less than 1 %. The low efficiency is primarily due to positron destruction during moderation. Emitted positrons must be filtered ...
  • Drop-in Hydrogen Refueling Station 

    Richardson, Ian Andrew; Leachman, Jacob; Fisher, J. (DOE Fuel Cell Technologies Office Webinar, 11/6/2014)
    This presentation describes Washington State University's winning bid in the Hydrogen Student Design Contest, 2014. Students designed a low-cost, low-maintenance hydrogen fueling station module suitable for mass production.
  • Dynamic Shear Stress and Heat Transfer of Solid Hydrogen, Deuterium, and Neon 

    Leachman, Jacob; Pfotenhauer, J. M.; Nellis, G. F. (Journal of Applied Physics, 2012)
    Solidifying and solid cryogens in steady shear are of fundamental importance to the fueling of fusion energy reactors. We present steady-state measurements of the dynamic shear stress, thermal-conductivity, and heat transfer ...
  • HYdrogen Properties for Energy Research (HYPER) 

    Leachman, Jacob (WSU Golden Grads, 9/11/2014)
    This presentation describes projects at the Hydrogen Properties and Energy Research (HYPER) Lab at Washington State University, including unmanned aerial vehicle and hydrogen fuel storage research.
  • HYdrogen Properties for Energy Research (HYPER) 

    Leachman, Jacob (WSU VCEA Executive Leadership Board, 11/8/2014)
    This presentation outlines projects at the HYdrogen Properties for Energy Research (HYPER) lab at Washington State University, including designs for unmanned aerial vehicles fueled by liquid nitrogen and proposals for a ...
  • Impact of Large Scale Hydrogen Liquefaction in the Pacific Northwest 

    Leachman, Jacob; Mehrizi-Sani, Ali; Casavant, Ken (WSU Energy Systems Innovation Center (ESIC) Board Meeting, 10/2/2014)
    This presentation describes research at Washington State University related to hydrogen liquefaction and storage including student projects and potential future production avenues in the Pacific Northwest.
  • Improved Hydrogen Liquefaction via the Heisenberg Vortex 

    Leachman, Jacob; McLarty, Dustin (WSU ESIC Board Meeting, 9/25/2015)
    This presentation describes a three-year study to identify efficient processes for creating and using liquid hydrogen.
  • On the threshold of a hydrogen economy in Washington State 

    Leachman, Jacob (Washington Technology Alliance Science and Discovery Series, 1/9/2015)
    This presentation proposes a role for liquid hydrogen in the energy economy of Washington state. It describes possibilities for using, storing, and delivering liquid hydrogen, drawing on research at Washington State University.
  • On the threshold of a hydrogen economy: The HOW of a Hydrogen Organized World 

    Leachman, Jacob (3/20/2015)
    This presentation, given at Google, explains how liquid hydrogen could play a key role in a cleaner energy economy.
  • Retrofit of a Rubotherm ISOSORP® 2000 for PVT-x and sorption measurements at cryogenic temperatures 

    Leachman, Jacob; Richardson, Ian Andrew; Blackham, T. M.; Penoncello, S. G. (Transactions of the Cryogenic Engineering Conference–CEC: Advances in Cryogenic Engineering, 2014)
    Type V composite storage tanks have significantly increased the working pressures of cryogenic systems for aerospace applications. However, the current operating pressures often exceed the range of available mixture property ...
  • Revised Standardized Equation of State for Hydrogen Gas Densities for Fuel Consumption Applications 

    Leachman, Jacob; Lemmon, Eric W.; Huber, Marcia L. (Journal of Research of the National Institute of Standards and Technology, 2008)
    An equation for the density of hydrogen gas has been developed that agrees with the current standard to within 0.01% from 220 K to 1000 K with pressures up to 70 MPa, to within 0.01% from 255 K to 1000 K with pressures to ...
  • The HOW of a Hydrogen Organized Washington — Technical version 

    Leachman, Jacob (MME Symposium Series, 9/17/2015)
    This presentation provides the technical details for how hydrogen could be created, stored, and used as part of the energy economy in Washington state and beyond.
  • The HOW of a Hydrogen Organized Washington — Business version 

    Leachman, Jacob (Avista Technical Seminar Series, 9/11/2015)
    This presentation makes a business case for making, storing, and using hydrogen as an alternative to fossil fuels. It presents research on storage and use of liquid hydrogen at Washington State University.
  • Thermodynamic properties status of deuterium and tritium 

    Leachman, Jacob; Richardson, Ian Andrew (Proceedings of the Cryogenic Engineering Conference–CEC: Advances in Cryogenic Engineering, 2012)
    Deuterium and tritium are seeing increased use in cryogenics as a fuel for nuclear fusion energy machines. The current Equation of State (EOS) for deuterium is based on work completed before the mid 1980's and tritium does ...