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ARPA-E Projects

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Displaying 1 - 6 of 6
Program: 
Project Term: 
11/09/2015 to 11/08/2018
Project Status: 
ALUMNI
Project State: 
New Hampshire
Technical Categories: 
Brayton Energy will develop a 1 kW recuperated Brayton cycle engine to produce heat and electricity for residential use. To begin the cycle, compressed air is preheated in a recuperator before adding fuel, then the air-fuel mix is ignited in a combustion chamber. The high temperature exhaust gases then expand through the turbine, providing some of the work that drives the compressor and also produces electricity in a generator. Major project innovations include the use of a rotary screw-type compressor and expander that operate in a sub-atmospheric Brayton cycle i.e. below atmospheric pressure. In addition, Brayton will also use their innovative patented recuperator that is currently in production, and an ultra-low emission combustor.
Program: 
Project Term: 
01/28/2019 to 08/27/2021
Project Status: 
ACTIVE
Project State: 
New Hampshire
Technical Categories: 

The Brayton Energy team will develop a key component to enable a cost-competitive Laughlin-Brayton battery energy storage system that combines thermal storage and innovative turbomachinery to generate power. When the system is charging, an electrically driven heat pump will accumulate thermal energy in a high temperature thermal energy storage medium. During discharge, electricity is produced by heating a gas using the stored thermal energy and sending it through the generation turbine that drives an electric generator. Brayton Energy's innovation lies in its reversing, counter-rotating turbine design, in which each turbomachinery stage is designed to act as both as a compressor and turbine, alternating between charging and discharging cycles. This approach greatly simplifies the Laughlin-Brayton battery system, improves its efficiency and operability, and reduces the capital cost.

Program: 
Project Term: 
03/25/2019 to 03/24/2020
Project Status: 
ACTIVE
Project State: 
New Hampshire
Technical Categories: 
Program: 
Project Term: 
08/13/2019 to 02/12/2022
Project Status: 
ACTIVE
Project State: 
New Hampshire
Technical Categories: 
Creare, in partnership with IMBY Energy, is developing a mass-manufacturable, recuperated, closed-loop Brayton-cycle microturbine that will provide 5 kW of electrical power for residential and commercial buildings. The waste heat from the device can be harvested for heating. Technical innovations in the system that are anticipated to enable high efficiency at an attractive cost include a diffusion bonded foil recuperator, a turbomachine with specialized hydrodynamic gas bearings, a binary working fluid mixture and flameless combustion.
Program: 
Project Term: 
01/01/2012 to 03/30/2013
Project Status: 
ALUMNI
Project State: 
New Hampshire
Technical Categories: 

Dartmouth College is developing specialized alloys with magnetic properties superior to the rare earths used in today's best magnets. EVs and renewable power generators typically use rare earths to turn the axles in their electric motors due to the magnetic strength of these minerals. However, rare earths are difficult and expensive to refine. Dartmouth will swap rare earths for a manganese-aluminum alloy that could demonstrate better performance and cost significantly less. The ultimate goal of this project is to develop an easily scalable process that enables the widespread use of low-cost and abundant materials for the magnets used in EVs and renewable power generators.

Program: 
Project Term: 
09/23/2019 to 01/22/2022
Project Status: 
ACTIVE
Project State: 
New Hampshire
Technical Categories: