Heat pump supply chain environmental impact reduction to improve the UK energy sustainability, resiliency and security

Shamoushaki, Moein; Koh, S. C. Lenny

doi:10.1038/s41598-023-47850-x

Cited by 12 publications

(1 citation statement)

References 42 publications

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“…The predominant portion of energy utilized in buildings presently emanates from the combustion of fossil fuels. This approach not only significantly affects societal energy security but also engenders adverse environmental consequences [5][6][7][8]. In response, various research efforts have been undertaken to reduce non-renewable energy consumption in buildings, including improvements in HVAC equipment efficiency [9][10][11], optimization of the operational efficiency of building systems [12][13][14][15][16][17], and the paramount importance of increasing the incorporation of renewable and low-grade energy sources within building infrastructures [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of the Solar Energy-Powered Embedded Pipe Envelope System

Wang,

Onn,

Chew

et al. 2024

Buildings

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This study introduces a Solar Energy-Powered Embedded Pipe Envelope System (SEPES) designed to enhance indoor thermal comfort and reduce heating loads during the heating season. To achieve this objective, a dynamic simulation model coupling a SEPES and building thermal environment was established under the TRNSYS environment. Based on the model, a case analysis was conducted to investigate the operational characteristics of the system during the heating season in a rural building in Beijing. The results indicate that, on the coldest heating day, the system can elevate the indoor temperature by 14.5 °C, reducing the daily heat load from 76.3 kWh to 20.3 kWh, achieving a remarkable energy savings of 73.4%. Additionally, due to the utilization of lower solar heat collection temperatures, the energy efficiency of the system reaches 26.9%. Throughout the entire heating season, the SEPES system enhances the natural indoor temperature by 13.3 °C to 16.6 °C, demonstrating significant effectiveness. Moreover, regional adaptability analysis indicates that the SEPES achieves energy savings ranging from 43.9% to 66% during the heating season in cold regions and regions with hot summers and cold winters in China. Overall, the SEPES is most suitable for climates characterized by both low temperatures and abundant solar radiation in order to achieve optimal performance.

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Section: Introductionmentioning

confidence: 99%

Numerical Study of the Solar Energy-Powered Embedded Pipe Envelope System

Wang,

Onn,

Chew

et al. 2024

Buildings

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Assessing the Environmental and Downstream Human Health Impacts of Decentralizing Cancer Care

Hantel,

Cernik,

Walsh

et al. 2024

JAMA Oncol

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ImportanceGreenhouse gas (GHG) emissions from health care are substantial and disproportionately harm persons with cancer. Emissions from a central component of oncology care, outpatient clinician visits, are not well described, nor are the reductions in emissions and human harms that could be obtained through decentralizing this aspect of cancer care (ie, telemedicine and local clinician care when possible).ObjectiveTo assess potential reductions in GHG emissions and downstream health harms associated with telemedicine and fully decentralized cancer care.Design, Setting, and ParticipantsThis population-based cohort study and counterfactual analyses using life cycle assessment methods analyzed persons receiving cancer care at Dana-Farber Cancer Institute between May 2015 and December 2020 as well as persons diagnosed with cancer over the same period from the Cancer in North America (CiNA) public dataset. Data were analyzed from October 2023 to April 2024.Main Outcomes and MeasuresThe adjusted per–visit day difference in GHG emissions in kilograms of carbon dioxide (CO2) equivalents between 2 periods: an in-person care model period (May 2015 to February 2020; preperiod) and a telemedicine period (March to December 2020; postperiod), and the annual decrease in disability-adjusted life-years in a counterfactual model where care during the preperiod was maximally decentralized nationwide.ResultsOf 123 890 included patients, 73 988 (59.7%) were female, and the median (IQR) age at first diagnosis was 59 (48-68) years. Patients were seen over 1.6 million visit days. In mixed-effects log-linear regression, the mean absolute reduction in per–visit day CO2 equivalent emissions between the preperiod and postperiod was 36.4 kg (95% CI, 36.2-36.6), a reduction of 81.3% (95% CI, 80.8-81.7) compared with the baseline model. In a counterfactual decentralized care model of the preperiod, there was a relative emissions reduction of 33.1% (95% CI, 32.9-33.3). When demographically matched to 10.3 million persons in the CiNA dataset, decentralized care would have reduced national emissions by 75.3 million kg of CO2 equivalents annually; this corresponded to an estimated annual reduction of 15.0 to 47.7 disability-adjusted life-years.Conclusions and RelevanceThis cohort study found that using decentralization through telemedicine and local care may substantially reduce cancer care’s GHG emissions; this corresponds to small reductions in human mortality.

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Green Hydrogen and Its Supply Chain. A Critical Assessment of the Environmental Impacts

Sola,

Rosa,

Ferrari

2024

Advanced Sustainable Systems

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Green hydrogen produced via electrolysis powered by renewables can greatly contribute to achieving carbon neutrality. The analysis of 35 papers reporting the life cycle assessment (LCA) of green hydrogen supply chains confirms the lower greenhouse gas (GHG) emissions with respect to other hydrogen forms and conventional fossil fuel and carbon systems. However, the global warming potential of green hydrogen worsens if grid electricity is used to back up renewable sources. Green hydrogen is also responsible for water consumption and for land use, while offshore platforms may be responsible for the loss of marine biodiversity. Another potential environmental hotspot is the depletion of rare metals and critical materials employed in the electrolyzer and in the power generation plants. This issue is exacerbated by the lack of information about the management of the end‐of‐life stage of this equipment. Notably, the delivery along the supply chain is responsible for hydrogen leaks, whose environmental consequences are still uncertain.

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Heat pump supply chain environmental impact reduction to improve the UK energy sustainability, resiliency and security

Cited by 12 publications

References 42 publications

Numerical Study of the Solar Energy-Powered Embedded Pipe Envelope System

Numerical Study of the Solar Energy-Powered Embedded Pipe Envelope System

Assessing the Environmental and Downstream Human Health Impacts of Decentralizing Cancer Care

Green Hydrogen and Its Supply Chain. A Critical Assessment of the Environmental Impacts

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