Introduction: The capability of a commercial waterpipe electric heater to simulate the waterpipe charcoal heating system using waterpipe tobacco consumption as a metric was evaluated, and a research-grade waterpipe electric heater to standardize waterpipe tobacco emission testing was designed.
Methods: The experiment was conducted in two phases. In Phase 1, tobacco was heated using either charcoal or a commercial electric heater. The tobacco temperature was recorded during a 57-minute machine-smoking session and tobacco consumption was measured. In Phase 2, a similar procedure was followed using a novel research-grade electric heater.
Results: In Phase 1, tobacco consumption using either charcoal or the commercial electric heater averaged 31.35% and 20.56%, respectively. In Phase 2, tobacco consumption using the research-grade electric heater, set at target temperatures of 470, 430, 400, 380, 370 and 350°C, averaged 55.74, 41.22, 40.18, 39.10, 31.57 and 26.14%, respectively.
Conclusions: The commercial electric heater did not reach consumption levels seen in the charcoal heating system, whereas the research-grade electric heater did and can be used as part of a standardize waterpipe tobacco emission testing regimen.
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http://dx.doi.org/10.18332/tpc/125355 | DOI Listing |
ACS ES T Water
January 2025
Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States.
Residential water heating represents an important nexus of energy/water conservation, waterborne disease, hygiene, and consumer preference. Here, we examine attributes of two off-the-shelf 151-L tank water heaters, one with hot water recirculation (recirculating) and another without recirculation (standard), compared to a tankless on-demand heater (on-demand). Energy efficiency decreased in the order on-demand > standard > continuous recirculation.
View Article and Find Full Text PDFMater Horiz
January 2025
Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang province, 315201, China.
Stretchable electromagnetic interference (EMI) shields with strain-insensitive EMI shielding and Joule heating performances are highly desirable to be integrated with wearable electronics. To explore the possibility of applying geometric design in elastomeric liquid metal (LM) composites and fully investigate the influence of LM geometry on stretchable EMI shielding and Joule heating, multifunctional wrinkle-structured LM/Ecoflex sandwich films with excellent stretchability are developed. The denser LM wrinkle enables not only better electrical conduction, higher shielding effectiveness (SE) and steady-state temperature, but also enhanced strain-stable far-field/near-field shielding performance and Joule-heating capability.
View Article and Find Full Text PDFNano Lett
January 2025
Department of Chemistry, Institute of Biomimetic Materials & Chemistry, Anhui Engineering Laboratory of Biomimetic Materials, Division of Nanomaterials & Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China.
The development of viscous-crude oil and water separation technology is important for overcoming pollution caused by oil spills. Although some separators responding to light, electric, and temperature have been proposed, their poor structural homogeneity and inferior controllability, together with weak capillary forces, hinder the rapid salvage of viscous crude oil. Herein, a Joule-heated hydrophobic porous oil/water separator is reported, which has advantages of low energy consumption (169.
View Article and Find Full Text PDFACS Appl Mater Interfaces
January 2025
Center for Nanochemistry, Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
Direct chemical vapor deposition growth of high-quality graphene on dielectric substrates is a great challenge. Graphene growth on dielectrics always suffers from the issues of a high nucleation density and poor quality. Herein, a premelted-substrate-promoted selective etching (PSE) strategy was proposed.
View Article and Find Full Text PDFSensors (Basel)
January 2025
Laboratory of Sensors/Actuators and Energy Harvesting, National Institute for Research and Development in Electrical Engineering ICPE-CA, 030138 Bucharest, Romania.
The use of hydrogen as fuel presents many safety challenges due to its flammability and explosive nature, combined with its lack of color, taste, and odor. The purpose of this paper is to present an electrochemical sensor that can achieve rapid and accurate detection of hydrogen leakage. This paper presents both the component elements of the sensor, like sensing material, sensing element, and signal conditioning, as well as the electronic protection and signaling module of the critical concentrations of H.
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