High Efficiency, Low Emission Refrigeration System

Fricke, Brian; Sharma, Vishaldeep

doi:10.2172/1311267

Cited by 4 publications

(4 citation statements)

References 9 publications

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“…Also, he indicated that the cascade system offers the best results for high temperature environments. Additionally, Fricke et al [30] contrasted the energy consumption of cascades and booster systems in different climate regions in the USA, concluding that cascade systems obtain the lowest energy consumption in hot regions and booster systems in cold regions, however, current cascades will not be compatible with the F-Gas Regulation if the medium temperature level is served with direct expansion systems with refrigerant GWP greater than 150.…”

Section: Introductionmentioning

confidence: 99%

Energy Evaluation of Multiple Stage Commercial Refrigeration Architectures Adapted to F-Gas Regulation

et al. 2018

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This work analyses different refrigeration architectures for commercial refrigeration providing service to medium and low temperature simultaneously: HFC/R744 cascade, R744 transcritical booster, R744 transcritical booster with parallel compression, R744 transcritical booster with gas ejectors, R513A cascade/R744 subcritical booster, and R513A cascade/R744 subcritical booster with parallel compression. The models were developed using compressor manufacturers’ data and real restrictions of each system component. Limitations and operating range of each component and architecture were analysed for environment temperatures from 0 to 40 °C considering thermal loads and environment temperature profiles for warm climates. For booster systems, cascade with subcritical booster with parallel compression provide highest coefficient of performance (COP) for temperatures below 12 °C and above 30 °C with COP increases compared basic booster up to 60.6%, whereas for transcritical boosters, architecture with gas ejectors obtains the highest COP with COP increases compared to the basic booster up to 29.5%. In annual energy terms, differences among improved booster systems are below 8% in the locations analysed. In Total Equivalent Warming Impact (TEWI) terms, booster architectures get the lowest values with small differences between improved boosters.

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Section: Introductionmentioning

confidence: 99%

Energy Evaluation of Multiple Stage Commercial Refrigeration Architectures Adapted to F-Gas Regulation

et al. 2018

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“…This is a two-stage system with low-and medium-temperature cooling. The specifications of the components (e.g., compressors, display case, gas cooler condenser) are shown in the previous report [26]. The experiments were conducted within 24 hours.…”

Section: Modeling Methodsmentioning

confidence: 99%

“…This study uses the gray-box approach for fault modeling development for CO2 transcritical systems. Multiple sets of experiments were conducted for both the fault scenarios and baseline (fault-free) scenarios [26]. This study proposed multiple fault models for supermarket transcritical CO2 refrigeration systems based on experimental datasets.…”

Section: Introductionmentioning

confidence: 99%

Connected Loads – Grid Connected Appliances: Commercial Refrigeration System Fault Detection and Diagnostics

Li¹,

Sun²,

Kuruganti³

et al. 2021

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“…Due to toxicity there is limited opportunity for expanding applications beyond this large but somewhat niche market. CO2 has seen a surge in popularity in recent years for cascade systems, where it has been shown to be an efficient and promising system in supermarket refrigeration (Fricke and Sharma 2016). However, in direct expansion systems such as beverage vending machines, initial momentum in using CO2 has been tempered largely due to the high system cost and low reliability that result from the high operating pressures in these systems (Hon 2017;VTech 2017).…”

Section: Overview Of Types and Applicationsmentioning

confidence: 99%

Refrigerants: Market Trends and Supply Chain Assessment

Booten

Nicholson

Mann

et al. 2020

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The National Renewable Energy Laboratory (NREL), in partnership with Oak Ridge National Laboratory, under the Clean Energy Manufacturing Analysis Center (CEMAC ) 1 umbrella, assessed the current state of existing and low-global-warming-potential (GWP) refrigerants for major end-use applications, including heating, ventilating, and air conditioning (HVAC) and those outside of the HVAC industry. The project incorporated a market overview and supply chain assessment to determine the production, distribution, consumption, costs, and potential operating efficiency impacts of new and alternative refrigerants entering the market. Market trends and ongoing research are also documented. This work supplements other U.S. Department of Energy efforts to support research activities on refrigerants and their applications, including a refrigerant research and development roadmap (Goetzler et al. 2014) and an outlook into global air-conditioning markets (Goetzler et al. 2016).

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High Efficiency, Low Emission Refrigeration System

Cited by 4 publications

References 9 publications

Energy Evaluation of Multiple Stage Commercial Refrigeration Architectures Adapted to F-Gas Regulation

Energy Evaluation of Multiple Stage Commercial Refrigeration Architectures Adapted to F-Gas Regulation

Connected Loads – Grid Connected Appliances: Commercial Refrigeration System Fault Detection and Diagnostics

Refrigerants: Market Trends and Supply Chain Assessment

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