Environmental Profiles of Stirling-Cooled and Cascade-Cooled Ultra-Low Temperature Freezers

Berchowitz, David M.; Kwon, Yong-Rak

doi:10.3390/su4112838

Cited by 19 publications

(2 citation statements)

References 2 publications

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“…Tables 3 and 4 present the results. Input data were obtained from Berchowitz & Kwon (2012), actual recycling data of a Please note that our calculations consider three recovery options: 1) direct redeployment, 2) redeployment after reconditioning, and 3) material recycling. We argue that most equipment can go through all three loops sequentially, as explained in Krikke (2010).…”

Section: Two Illustrative Cases At Reuzeitmentioning

confidence: 99%

Circular Economic Surplus Asset Management: A Game Changer in Life Sciences

Krikke

Palma²,

Shell³

et al. 2022

IEEE Eng. Manag. Rev.

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The integration of Surplus Asset Management (SAM) with the circular economy (CE) provides a solution to optimize the use of resources, assets, and equipment throughout their life cycle, enabling new business models, increasing profitability, achieving sustainability goals, and plus reducing obsolescence and waste. We introduce the CE-SAM as a business approach to create value by extending the life cycles of discarded useful equipment. We distinguish four types of value: 1) sourcing value, 2) customer value, 3) information value, and 4) environmental value. Carbon footprints can be reduced by up to 80% by redeploying equipment depending on residual value and customer needs. CE-SAM can be a business game changer if it is integrated as part of the business strategy. The implementation challenges can be best tackled through the collaboration of different actors along the value chain, depending on their capabilities and capacity. REUZEit, a case study company, provides a feasible case study that services life science and pharmaceutical companies to optimize the use of their resources, assets, and equipment, to reduce obsolescence, waste, and increase profit at the same time.

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Section: Two Illustrative Cases At Reuzeitmentioning

confidence: 99%

Circular Economic Surplus Asset Management: A Game Changer in Life Sciences

Krikke

Palma²,

Shell³

et al. 2022

IEEE Eng. Manag. Rev.

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“…Berchowitz et al [27] used Stirling refrigerator as an alternative to low-temperature freezers. By removing the old system in these freezers, which used two compressors to provide the required cooling, in addition to significantly reducing the required electrical energy by reducing the volume and mass of the device, the amount of produced CO 2 was reduced during the production cycle.…”

Section: Introductionmentioning

confidence: 99%

Investigation on effective operating variables in gamma-type Stirling engine performance: a simulation approach

2020

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The Stirling engine is one of the engines that has become popular due to its many advantages. Nowadays, lack of fossil fuels has led to a lot of attention to the use of renewable energies. For this reason, solar energy has drawn a lot of attention to be used as the Stirling engine heat source. The purpose of this paper is to investigate the performance of a proposed Stirling engine in different engine speeds, pressures, and working fluids. The proposed Stirling engine is of gamma-type. This engine is simulated using the Nlog code which is written for this engine in MATLAB work space. This code was validated by experimental data in our previous works. The investigated fluids in this study are helium, nitrogen, and hydrogen. It was found that the best fluid for the proposed Stirling engine is hydrogen, and the best engine speed is 1300 rpm. Also, the higher the engine pressure, the more the output work will be.

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