Home refuelling appliance for less than the cost of a dishwasher
In what could help fuel widespread adoption of natural gas vehicles (NGVs) in the United States and globally, researchers from GE Global Research, in partnership with Chart Industries and scientists at the University of Missouri, have been awarded a program through Advanced Research Projects Agency for Energy (ARPA-E) to develop an affordable at-home refueling station that would meet ARPA-E’s target of $500 per station and reduce re-fueling times from 5-8 hours to less than 1 hour.
Natural gas prices are at an all-time low and the number of NGVs is increasing; however the current low availability of refueling stations and limited driving range of natural gas vehicles, are perceived as barriers preventing greater adoption of this vehicle technology.
At-home refueling stations are sold today, but are expensive (~$5000) and require long re-fueling times. The 5-8 hours required to refuel an NGV often leaves overnight re-fueling as the only viable option for vehicle owners. While these barriers can be more easily managed by return-to-base fleets, they are not practical for passenger vehicles parked in the driveway or garage at home.
“Since the beginning of the automotive industry, cars and trucks have driven on diesel fuel or unleaded gas,” said Anna Lis Laursen, project leader and chemical engineer at GE Global Research. “But with new technologies to reduce the cost of NG re-fueling and continued improvements in battery technology, the prospects for vehicles that run on alternative fuels will only grow.”
Laursen added, “The goal of our project is to design an at-home refueling station that is much simpler in design, more cost effective and reduces re-fueling times to under an hour. By reducing the time and cost of re-fueling, we can break down the barriers that are preventing more widespread adoption of NG vehicles. If we can meet our cost targets, the price of a home refueling station would be less than typical appliances in the home such as a dishwasher or stove.”
Most NGVs in America are fleet vehicles such as buses and delivery trucks, but they include some passenger cars as well.
One of the keys to enabling a more robust, cost-effective infrastructure is to provide more affordable and convenient re-fueling options. The at-home refueling station under development by GE, Chart Industries and the University of Missouri could meet this challenge.
The refueling station design being worked on is fundamentally different from how today’s re-fueling stations operate. Today’s systems rely on traditional compressor technologies to compress and deliver fuel to a vehicle. The research team from GE, Chart Industries and the University of Missouri will design a system that chills, densifies and transfers compressed natural gas more efficiently. It will be a much simpler design with fewer moving parts, and that will operate quietly and be virtually maintenance-free.
The total cost of the 28-month program will be approximately $2.3 million, which will be shared by ARPA-E and GE. As part of the program, GE researchers will focus on overall system design integration. Chart Industries and University of Missouri will address the detailed engineering, cost and manufacturability of the key system components.
The goal of this program is to deliver and demonstrate a fully functioning at-home refueling station unit.
To accelerate the adoption of natural gas as a transportation fuel, GE recently introduced the CNG In A Box technology which takes natural gas from a pipeline and compresses it on-site at an industrial location or at a traditional automotive refilling station to then turns it into CNG, making it faster, easier and less expensive for users to fuel up natural gas vehicles.
(This article compiled using information from a GE Global Research press release)