Eric Kozubal
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View article: Material properties of aqueous potassium acetate solutions for use in liquid desiccant air conditioning
Material properties of aqueous potassium acetate solutions for use in liquid desiccant air conditioning Open
View article: Investigation of ventilation-coupled high energy density sensible thermal energy storage
Investigation of ventilation-coupled high energy density sensible thermal energy storage Open
View article: Evaluation of phase change thermal storage in a cascade heat pump
Evaluation of phase change thermal storage in a cascade heat pump Open
View article: Performance and Characterization of Membrane Liquid Desiccant Air Conditioning Systems
Performance and Characterization of Membrane Liquid Desiccant Air Conditioning Systems Open
This document is intended to describe the work objectives and tasks for several projects between the National Renewable Energy Laboratory (NREL) and 7AC Technologies, with indirect support from 3M. The projects all revolve around the perfo…
View article: Systems with multi-circuited, phase-change composite heat exchangers
Systems with multi-circuited, phase-change composite heat exchangers Open
A system comprising a first plurality of microchannels, a second plurality of microchannels in thermal communication with the first plurality of microchannels such that the first plurality of microchannels and second plurality of microchan…
View article: Integrated desiccant-based cooling and dehumidification
Integrated desiccant-based cooling and dehumidification Open
Integrated systems comprising both i) heat and mass exchange systems and ii) electrolysis stacks are disclosed, together with related methods of use. The disclosed systems cool and/or dehumidify air using two streams of salt solutions as l…
View article: Tank system for liquid desiccant air conditioning system
Tank system for liquid desiccant air conditioning system Open
View article: Heat-pump driven desiccant regeneration
Heat-pump driven desiccant regeneration Open
Disclosed herein are systems and processes to thermally regenerate and re-concentrate a liquid desiccant (absorbent) with an electrically driven heat pump. The regeneration and re-concentration may be performed in a cost and energy efficie…
View article: Indirect evaporative coolers with enhanced heat transfer
Indirect evaporative coolers with enhanced heat transfer Open
A separator plate assembly for use in an indirect evaporative cooler (IEC) with an air-to-air heat exchanger. The assembly includes a separator plate with a first surface defining a dry channel and a second surface defining a wet channel. …
View article: High Efficiency Heat Pumps Can Pave the Path for Building Decarbonization in Cold Climates: Preprint
High Efficiency Heat Pumps Can Pave the Path for Building Decarbonization in Cold Climates: Preprint Open
Heat pumps play an instrumental role in buildings decarbonization strategies. Recent advances in heat pump systems employ variable-speed compressor technology and electronically commutated fan motors. Inherently, the heating capacity and e…
View article: Design of Phase-Change Thermal Storage Device in a Heat Pump for Building Electric Peak Load Shaving: Preprint
Design of Phase-Change Thermal Storage Device in a Heat Pump for Building Electric Peak Load Shaving: Preprint Open
Replacing carbon-intensive fossil fuel heating systems with electric heat pumps powered by renewables is a promising approach to decarbonize the building sector. However, one of the technical barriers of this approach is the large scale of…
View article: Corrosion of Metal Alloys in Potassium Acetate Solutions for Liquid Desiccant Dehumidification and Air Conditioning
Corrosion of Metal Alloys in Potassium Acetate Solutions for Liquid Desiccant Dehumidification and Air Conditioning Open
For commercial buildings, liquid desiccant air conditioners (LDACs) could provide up to 80% energy savings compared to high-efficiency vapor compression AC, but commonly utilized liquid desiccants are highly corrosive. This precludes the u…
View article: Humidity’s impact on greenhouse gas emissions from air conditioning
Humidity’s impact on greenhouse gas emissions from air conditioning Open
View article: Flexible, Multipurpose Laboratory Advances Building and Thermal Energy Systems: Expanding Evaluation and Development of Grid-Interactive Buildings
Flexible, Multipurpose Laboratory Advances Building and Thermal Energy Systems: Expanding Evaluation and Development of Grid-Interactive Buildings Open
Robust hardware and controls are necessary to ensure results match their intent before they can be used broadly. However, this often requires multiple field experiments in a variety of climate zones. In the field, it is more difficult to o…
View article: Design and performance evaluation of a dual-circuit thermal energy storage module for air conditioners
Design and performance evaluation of a dual-circuit thermal energy storage module for air conditioners Open
View article: Rate capability and Ragone plots for phase change thermal energy storage
Rate capability and Ragone plots for phase change thermal energy storage Open
View article: Integrated Thermal Energy Storage System For Air-conditioners With Phase-Change Composites
Integrated Thermal Energy Storage System For Air-conditioners With Phase-Change Composites Open
Thermal energy storage (TES) is a promising solution to store and dispatch energy and shave peak electric load, reducing the operational cost of HVAC systems. We present results of a TES system using phase-change materials (PCM) integrated…
View article: Walmart Experimental Store Performance Stories: Preprint
Walmart Experimental Store Performance Stories: Preprint Open
Walmart opened two experimental stores--one in Colorado and one in Texas--in 2005 to serve as test beds for several advanced building systems. Each embodied more than 50 experiments covering materials, water systems, energy systems, and re…
View article: Combined Cooling, Heating, and Power (CCHP) System: Cooperative Research and Development Final Report, CRADA Number CRD-14-570
Combined Cooling, Heating, and Power (CCHP) System: Cooperative Research and Development Final Report, CRADA Number CRD-14-570 Open
NREL and Be Power Tech, Inc. (Be Power) will jointly develop a new combined cooling, heating, and power (CCHP) system that uses desiccants in combination with evaporative cooling and fuel cells. The combined system will have better economi…
View article: On the importance of the heat and mass transfer resistances in internally-cooled liquid desiccant dehumidifiers and regenerators
On the importance of the heat and mass transfer resistances in internally-cooled liquid desiccant dehumidifiers and regenerators Open
View article: Experimental Design and Laboratory Characterization of a Medium- and High-Efficiency Rooftop Unit for use in Building Energy Simulations
Experimental Design and Laboratory Characterization of a Medium- and High-Efficiency Rooftop Unit for use in Building Energy Simulations Open
Commercial rooftop units (RTUs) that incorporate variable-speed components are quickly entering the marketplace; however, the design and modeling tools that calculate the energy benefits of these units cannot properly estimate performance.…
View article: Innovation Incubator: LiquidCool Solutions Technical Evaluation. Laboratory Study and Demonstration Results of a Directed-Flow, Liquid Submerged Server for High-Efficiency Data Centers
Innovation Incubator: LiquidCool Solutions Technical Evaluation. Laboratory Study and Demonstration Results of a Directed-Flow, Liquid Submerged Server for High-Efficiency Data Centers Open
LiquidCool Solutions (LCS) has developed liquid submerged server (LSS) technology that changes the way computer electronics are cooled. The technology provides an option to cool electronics by the direct contact flow of dielectric fluid (c…