Design Optimization of Polymer Heat Exchanger for Automated Household-Scale Solar Water Pasteurizer

Denkenberger, David; Pearce, Joshua M.

doi:10.3390/designs2020011

Cited by 8 publications

(4 citation statements)

References 64 publications

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“…Some of the units are amenable to additive manufacturing and are thus distributed open source production. There has already been substantial progress made on various heat exchangers ( Arie et al, 2017 ; Denkenberger and Pearce, 2018b ; Tiwari et al, 2019 ). In addition, there are open source desktop centrifuges that could be scaled for this application ( WareJoncas et al, 2018 ; Sule et al, 2019 ).…”

Section: Discussionmentioning

confidence: 99%

Methane Single Cell Protein: Potential to Secure a Global Protein Supply Against Catastrophic Food Shocks

Martínez¹,

Pearce

Throup³

et al. 2022

Front. Bioeng. Biotechnol.

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Global catastrophes such as a supervolcanic eruption, asteroid impact, or nuclear winter could cause global agricultural collapse due to reduced sunlight reaching the Earth’s surface. The human civilization’s food production system is unprepared to respond to such events, but methane single cell protein (SCP) could be a key part of the solution. Current preparedness centers around food stockpiling, an excessively expensive solution given that an abrupt sunlight reduction scenario (ASRS) could hamper conventional agriculture for 5–10 years. Instead, it is more cost-effective to consider resilient food production techniques requiring little to no sunlight. This study analyses the potential of SCP produced from methane (natural gas and biogas) as a resilient food source for global catastrophic food shocks from ASRS. The following are quantified: global production potential of methane SCP, capital costs, material and energy requirements, ramp-up rates, and retail prices. In addition, potential bottlenecks for fast deployment are considered. While providing a more valuable, protein-rich product than its alternatives, the production capacity could be slower to ramp up. Based on 24/7 construction of facilities, 7%–11% of the global protein requirements could be fulfilled at the end of the first year. Despite significant remaining uncertainties, methane SCP shows significant potential to prevent global protein starvation during an ASRS at an affordable price—US$3–5/kg dry.

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Section: Discussionmentioning

confidence: 99%

Methane Single Cell Protein: Potential to Secure a Global Protein Supply Against Catastrophic Food Shocks

Martínez¹,

Pearce

Throup³

et al. 2022

Front. Bioeng. Biotechnol.

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show abstract

“…Thus, the melting point of the mixture can be adjusted anywhere between the two end points of the two chemicals. Work has been done in the open source appropriate technology community [177,178] on such active thermometers in the past to make water pasteurization indicators (WAPI) for solar water pasteurization [179][180][181][182]. There does not appear to be any efforts to make open source disposable thermometers in the open source medical community, but work on 3-D printing microfluidics with a number of technologies appears to be a promising route [183][184][185][186][187][188][189][190][191].…”

Section: Disposable Thermometersmentioning

confidence: 99%

Distributed Manufacturing of Open-Source Medical Hardware for Pandemics

Pearce¹

2020

Preprint

Self Cite

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Distributed digital manufacturing offers a solution to medical supply and technology shortages during pandemics. To prepare for the next pandemic, this study reviews the state-of-the-art for open hardware designs needed in a COVID-19-like pandemic. It evaluates the readiness of the top twenty technologies requested by the Government of India. The results show that the majority of the actual medical products have had some open source development, however, only 15% of the supporting technologies that make the open source device possible are freely available. The results show there is still considerable work needed to provide open source paths for the development of all the medical hardware needed during pandemics. Five core areas of future work are discussed that include: i) technical development of a wide-range of open source solutions for all medical supplies and devices, ii) policies that protect the productivity of laboratories, makerspaces and fabrication facilities during a pandemic, as well as iii) streamlining the regulatory process, iv) developing Good-Samaritan laws to protect makers and designers of open medical hardware, as well as to compel those with knowledge that will save lives to share it, and v) requiring all citizen-funded research to be released with free and open source licenses.

show abstract

“…Thus, the melting point of the mixture can be adjusted anywhere between the two end points of the two chemicals. Research has been conducted in the open source appropriate technology community [177,178] on such active thermometers in the past to make water pasteurization indicators (WAPI) for solar water pasteurization [179][180][181][182]. There does not appear to be any efforts to make open source disposable thermometers in the open source medical community, but research on 3-D printing microfluidics with a number of technologies appears to be a promising route [183][184][185][186][187][188][189][190][191].…”

Section: Disposable Thermometersmentioning

confidence: 99%

Distributed Manufacturing of Open Source Medical Hardware for Pandemics

Pearce

2020

JMMP

Self Cite

View full text Add to dashboard Cite

Distributed digital manufacturing offers a solution to medical supply and technology shortages during pandemics. To prepare for the next pandemic, this study reviews the state-of-the-art of open hardware designs needed in a COVID-19-like pandemic. It evaluates the readiness of the top twenty technologies requested by the Government of India. The results show that the majority of the actual medical products have some open source development, however, only 15% of the supporting technologies required to produce them are freely available. The results show there is still considerable research needed to provide open source paths for the development of all the medical hardware needed during pandemics. Five core areas of future research are discussed, which include (i) technical development of a wide-range of open source solutions for all medical supplies and devices, (ii) policies that protect the productivity of laboratories, makerspaces, and fabrication facilities during a pandemic, as well as (iii) streamlining the regulatory process, (iv) developing Good-Samaritan laws to protect makers and designers of open medical hardware, as well as to compel those with knowledge that will save lives to share it, and (v) requiring all citizen-funded research to be released with free and open source licenses.

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Design Optimization of Polymer Heat Exchanger for Automated Household-Scale Solar Water Pasteurizer

Cited by 8 publications

References 64 publications

Methane Single Cell Protein: Potential to Secure a Global Protein Supply Against Catastrophic Food Shocks

Methane Single Cell Protein: Potential to Secure a Global Protein Supply Against Catastrophic Food Shocks

Distributed Manufacturing of Open-Source Medical Hardware for Pandemics

Distributed Manufacturing of Open Source Medical Hardware for Pandemics

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