Abstract
Energy storage is important for many applications from hybrid vehicles to off-peak electric power to rotating machinery. A flywheel offers the combination of high energy density and high power density not attainable with other energy storage medium. In many situations, it is desirable to store energy at a constant angular velocity. This work proposes a novel self-governing fluidic variable inertia flywheel that can maintain a constant angular velocity across a range of energy storage. The fluidic flywheel uses a piston to separate the liquid filled chamber from a chamber vented to atmosphere. A force balance is created on the piston due to the radial pressure gradient of the liquid reacted by a constant force spring. Energy added to the system is stored in equally two forms: increases the kinetic energy of the flywheel at a constant angular velocity and increasing the potential energy of the constant force spring. A design example demonstrates that the fluidic flywheel enables a constant angular velocity with an order of magnitude lower mass moment of inertia than a conventional flywheel. This promising technology enables a simple constant angular velocity energy storage system, yet requires future work in numerous areas.
| Original language | English (US) |
|---|---|
| Title of host publication | 7th International Energy Conversion Engineering Conference |
| State | Published - Dec 1 2009 |
| Event | 7th International Energy Conversion Engineering Conference - Denver, CO, United States Duration: Aug 2 2009 → Aug 5 2009 |
Publication series
| Name | 7th International Energy Conversion Engineering Conference |
|---|
Other
| Other | 7th International Energy Conversion Engineering Conference |
|---|---|
| Country | United States |
| City | Denver, CO |
| Period | 8/2/09 → 8/5/09 |
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Fluidic variable inertia flywheel. / Van De Ven, James D.
7th International Energy Conversion Engineering Conference. 2009. 2009-4501 (7th International Energy Conversion Engineering Conference).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Fluidic variable inertia flywheel
AU - Van De Ven, James D.
PY - 2009/12/1
Y1 - 2009/12/1
N2 - Energy storage is important for many applications from hybrid vehicles to off-peak electric power to rotating machinery. A flywheel offers the combination of high energy density and high power density not attainable with other energy storage medium. In many situations, it is desirable to store energy at a constant angular velocity. This work proposes a novel self-governing fluidic variable inertia flywheel that can maintain a constant angular velocity across a range of energy storage. The fluidic flywheel uses a piston to separate the liquid filled chamber from a chamber vented to atmosphere. A force balance is created on the piston due to the radial pressure gradient of the liquid reacted by a constant force spring. Energy added to the system is stored in equally two forms: increases the kinetic energy of the flywheel at a constant angular velocity and increasing the potential energy of the constant force spring. A design example demonstrates that the fluidic flywheel enables a constant angular velocity with an order of magnitude lower mass moment of inertia than a conventional flywheel. This promising technology enables a simple constant angular velocity energy storage system, yet requires future work in numerous areas.
AB - Energy storage is important for many applications from hybrid vehicles to off-peak electric power to rotating machinery. A flywheel offers the combination of high energy density and high power density not attainable with other energy storage medium. In many situations, it is desirable to store energy at a constant angular velocity. This work proposes a novel self-governing fluidic variable inertia flywheel that can maintain a constant angular velocity across a range of energy storage. The fluidic flywheel uses a piston to separate the liquid filled chamber from a chamber vented to atmosphere. A force balance is created on the piston due to the radial pressure gradient of the liquid reacted by a constant force spring. Energy added to the system is stored in equally two forms: increases the kinetic energy of the flywheel at a constant angular velocity and increasing the potential energy of the constant force spring. A design example demonstrates that the fluidic flywheel enables a constant angular velocity with an order of magnitude lower mass moment of inertia than a conventional flywheel. This promising technology enables a simple constant angular velocity energy storage system, yet requires future work in numerous areas.
UR - http://www.scopus.com/inward/record.url?scp=77956799044&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77956799044&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:77956799044
SN - 9781563479762
T3 - 7th International Energy Conversion Engineering Conference
BT - 7th International Energy Conversion Engineering Conference
ER -