Engineering topics
Publications and source records attributed to Sprik, Sam.
This publication includes 98 composite data products (CDPs) produced for next generation hydrogen stations, with data through the third quarter of 2019. These CDPs include data from retail stations only and represent the following analysis categories: deployment, safety, maintenance and reliability, performance, cost, utilization, hydrogen quality, and component energy.
DEPRECATED This repository was archived by the owner on Jun 30, 2026. It is now read-only. The Hydrogen Dispenser Test Apparatus (HDTA) is used to validate hydrogen fueling station performance. This software takes the data generated from HDTA and compares it to fueling standards CSA HGV4.3 and SAE J2601. The software generates plots and metrics for pressure, temperature and IR communications from the HDTA.
The U.S. Department of Energy (DOE) has developed a vehicle framework model to simulate fuel cell-based light-duty vehicle operation for various hydrogen storage systems. This transient model simulates the performance of the storage system, fuel cell, and vehicle for comparison to DOE’s Technical Targets using four drive cycles/profiles. Chemical hydrogen storage models have been developed for the Framework model for both exothermic and endothermic materials. Despite the utility of such models, they require that material researchers input system design specifications that cannot be easily estimated. To address this challenge, a design tool has been developed that allows researchers to directly enter kinetic and thermodynamic chemical hydrogen storage material properties into a simple sizing module that then estimates the systems parameters required to run the storage system model. Additionally, this design tool can be used as a standalone executable file to estimate the storage system mass and volume outside of the framework model and compare it to the DOE Technical Targets. These models will be explained and exercised with existing hydrogen storage materials.
This publication includes 20 composite data products (CDPs) produced in Spring 2017 for fuel cell electric vehicle performance.
This publication includes 90 composite data products (CDPs) produced for next generation hydrogen stations with data through the fourth quarter of 2016. These CDPs include data for all stations in NREL's evaluation (retail and non-retail combined).
This publication includes 86 composite data products (CDPs) produced for next generation hydrogen stations, with data through the fourth quarter of 2016. These CDPs include data from retail stations only.
This publication includes 80 composite data products (CDPs) produced in Spring 2016 for next generation hydrogen stations, with data through the third quarter of 2016. These CDPs include data from retail stations only.
This publication includes 87 composite data products (CDPs) produced for next generation hydrogen stations with data through the third quarter of 2016. These CDPs include data for all stations in NREL's evaluation (retail and non-retail combined).
Overview of NREL's fuel cell electric vehicle (FCEV) evaluation activities presented at the Advanced Automotive Battery Conference in Detroit, Michigan on June 17, 2016.
This publication includes 73 composite data products (CDPs) produced in Spring 2016 for fuel cell electric vehicle performance.
This publication includes 61 composite data products (CDPs) produced for next generation hydrogen stations, with data through the fourth quarter of 2015.
Overview of NREL's fuel cell electric vehicle (FCEV) evaluation activities presented to the Interagency Working Group on December 15, 2015.
Presentation includes 36 composite data products (CDPs) produced for stationary fuel cell systems, with data through the third quarter of 2015.
NREL presented evaluation results on the performance status of hydrogen stations and fuel cell vehicles at the 2015 Fuel Cell Seminar in Long Beach, California.
This publication includes 53 composite data products (CDPs) produced in Fall 2015 for fuel cell electric vehicle performance.
This publication includes 56 composite data products (CDPs) produced for next generation hydrogen stations in Fall 2015.
This presentation provides a summary of NREL's FY15 fuel cell electric vehicle evaluation project activities and accomplishments. It was presented at the U.S. Department of Energy Hydrogen and Fuel Cells Program 2015 Annual Merit Review and Peer Evaluation Meeting on June 10, 2015, in Arlington, Virginia.
Working in collaboration with the U.S. Department of Energy (DOE) and industry project partners, the National Renewable Energy Laboratory (NREL) acts as the central data repository for the data collected from real-world operation of fuel cell backup power systems. With American Recovery and Reinvestment Act of 2009 (ARRA) co-funding awarded through DOE's Fuel Cell Technologies Office, more than 1,300 fuel cell units were deployed over a three-plus-year period in stationary, material handling equipment, auxiliary power, and backup power applications. This surpassed a Fuel Cell Technologies Office ARRA objective to spur commercialization of an early market technology by installing 1,000 fuel cell units across several different applications, including backup power. By December 2013, 852 backup power units out of 1,330 fuel cell units deployed were providing backup service, mainly for telecommunications towers. For 136 of the fuel cell backup units, project participants provided detailed operational data to the National Fuel Cell Technology Evaluation Center for analysis by NREL's technology validation team. NREL analyzed operational data collected from these government co-funded demonstration projects to characterize key fuel cell backup power performance metrics, including reliability and operation trends, and to highlight the business case for using fuel cells in these early market applications. NREL's analyses include these critical metrics, along with deployment, U.S. grid outage statistics, and infrastructure operation.