Acta IMEKO最新文献_第4页

Photovoltaic cooling techniques’ effect on the average monthly performance 光伏冷却技术对月平均性能的影响

Acta IMEKO Pub Date : 2024-03-04 DOI: 10.21014/actaimeko.v13i1.1660

Antonino Rollo, Vittorio Ferraro, Piero Bevilacqua

{"title":"Photovoltaic cooling techniques’ effect on the average monthly performance","authors":"Antonino Rollo, Vittorio Ferraro, Piero Bevilacqua","doi":"10.21014/actaimeko.v13i1.1660","DOIUrl":"https://doi.org/10.21014/actaimeko.v13i1.1660","url":null,"abstract":"Nowadays, mitigating climate-altering emissions resulting from air conditioning and mechanical ventilation of indoor spaces is of utmost importance. Encourage the adoption of renewable energy sources for power generation is a critical approach in this regard. Among the available technologies, photovoltaic technology stands as the most mature option. However, it does have limitations, such as reduced efficiency and performance degradation at elevated temperatures. To enhance the efficiency of photovoltaic systems, various solutions have been proposed over time, with significant research focusing on the exploration of new materials. One of the most promising solutions involves panel cooling through the utilization of external fluids, either in a forced or natural manner. Furthermore, the extracted heat from this cooling process can be effectively reused in other industrial processes, adding to its appeal. Nonetheless, despite its potential, the application of panel cooling technology is relatively recent, and assessing its suitability in specific scenarios at an early stage can be challenging. Currently, there is a lack of clear and straightforward methodologies to evaluate the performance gains achievable through the implementation of panel cooling. The primary objective of this research is to present an innovative methodology that can effectively assess panel cooling efficiency on an average daily-monthly basis. Specifically, we propose corrective parameters that modify the widely used Siegel method, which determines the monthly average daily efficiency of uncooled panels. Throughout the study, it has become evident that the input values derived from the UNI standard do not fully represent the real-world conditions. This finding may indicate the necessity for regulatory updates to accurately account for the practical operational environment.","PeriodicalId":37987,"journal":{"name":"Acta IMEKO","volume":"146 5‐7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140398080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Performance evaluation of a spark ignition engine using gasoline and essential oil fuel blend 使用汽油和精油混合燃料的火花点火发动机性能评估

Acta IMEKO Pub Date : 2024-03-04 DOI: 10.21014/actaimeko.v13i1.1687

M. Paloboran, Thesya Atarezcha Pangruruk, Mustari Lamada, Zulhajji Z., H. H. Latang, Slamet Widodo

{"title":"Performance evaluation of a spark ignition engine using gasoline and essential oil fuel blend","authors":"M. Paloboran, Thesya Atarezcha Pangruruk, Mustari Lamada, Zulhajji Z., H. H. Latang, Slamet Widodo","doi":"10.21014/actaimeko.v13i1.1687","DOIUrl":"https://doi.org/10.21014/actaimeko.v13i1.1687","url":null,"abstract":"Clove oil is an essential oil that has recently been used not only as a health or aromatherapy ingredient but is also widely used as an additive in fuel, especially for compression ignition engines. Essential oils are extracted through distillation from various parts of the clove tree, such as flowers, tree bark, leaves, and even fruit. This study aims to evaluate the combustion performance of a spark-ignition engine fueled by gasoline and essential oil at a concentration of 5-20 % as a blend. This type of research has not been conducted by many researchers, making it difficult to find scientific references related to this type of research. Experiments carried out on a research engine with engine speed variations of 1400–1800 rpm and a constant load of 3 kg. The results show that increasing the essential oil content increases the fuel energy and indicative power, thereby increasing the thermal efficiency. However, the brake power will decrease because most of it is lost owing to heat transfer and friction; therefore, the mechanical efficiency decreases if the percentage of essential oil in gasoline increases. Meanwhile, increased essential oils will reduce CO2 emissions, but HC and CO emissions will increase, especially at high engine speeds.","PeriodicalId":37987,"journal":{"name":"Acta IMEKO","volume":"159 1‐4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140398276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

IoT sensor nodes for air pollution monitoring: A review 用于空气污染监测的物联网传感器节点：综述

Acta IMEKO Pub Date : 2023-12-28 DOI: 10.21014/actaimeko.v12i4.1676

Rocío Alejandra Guerrón, Francesco D’Amore, M. Bencardino, Francesco Lamonaca, Antonio Colaprico, Marco Lanuzza, R. Taco, D. L. Carní

引用次数: 0

Introductory notes for the Acta IMEKO fourth issue 2023 Acta IMEKO 第 4 期 2023 的介绍性说明

Acta IMEKO Pub Date : 2023-12-28 DOI: 10.21014/actaimeko.v12i4.1737

Francesco Lamonaca

引用次数: 0

Modeling and simulation of dew point temperature generated by a bubble aerator 气泡曝气器产生的露点温度建模与模拟

Acta IMEKO Pub Date : 2023-12-24 DOI: 10.21014/actaimeko.v12i4.1568

Arfan Sindhu Tistomo, Aditya Achmadi, Melati Azizka Fajria, S. Viridi, Muhammad Miftahul Munir, S. Suprijadi

{"title":"Modeling and simulation of dew point temperature generated by a bubble aerator","authors":"Arfan Sindhu Tistomo, Aditya Achmadi, Melati Azizka Fajria, S. Viridi, Muhammad Miftahul Munir, S. Suprijadi","doi":"10.21014/actaimeko.v12i4.1568","DOIUrl":"https://doi.org/10.21014/actaimeko.v12i4.1568","url":null,"abstract":"The dew point temperature can be generated by saturating air with water vapor through several methods, one of which is by creating small-sized air bubbles passed through water in an enclosed space known as a saturator. In practical terms, the dew point temperature produced by this system can be determined by measuring it using a dew point meter. However, the prediction of the dew point temperature generated through theoretical approaches has not been presented before. Thus, in this study, a simulation has been conducted to determine the dew point temperature. The result is then compared to the experimental data. The experiment follows the single pressure humidity generator principle, where a saturator containing a bubble aerator is immersed in a stirred liquid bath. The bath temperature is set to 25 °C, and the gas flow rate is adjusted from 0.1 lpm to 0.4 lpm. The dew point temperature is measured using a 373 LHX chilled mirror dew point meter. On the other hand, the simulation is performed using the Monte Carlo method, and the physical model involves a heat balance between convection and the change in bubble energy. The convection heat transfer coefficient is determined by the behavior of bubble dynamics, which is related to the bubble size and bubble velocity. The dew point temperature obtained from the simulation is assumed to be the same as the bubble temperature. As a result, the simulation data align well with the experimental data.","PeriodicalId":37987,"journal":{"name":"Acta IMEKO","volume":"547 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139160723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Introductory notes for the Acta IMEKO thematic issue on Measurements and Applications in Veterinary and Animal Sciences 兽医和动物科学中的测量与应用》（Acta IMEKO）专题介绍说明

Acta IMEKO Pub Date : 2023-12-24 DOI: 10.21014/actaimeko.v12i4.1736

Leopoldo Angrisani, Francesco Lamonaca, Gianluca Neglia

引用次数: 0

A methodological approach towards the bio-inspired design of novel scaffolds for tissue engineering 从生物启发角度设计新型组织工程支架的方法论

Acta IMEKO Pub Date : 2023-12-22 DOI: 10.21014/actaimeko.v12i4.1717

Pierpaolo Fucile, Francesco Lamonaca, Antonio Gloria, Lorenzo Moroni

{"title":"A methodological approach towards the bio-inspired design of novel scaffolds for tissue engineering","authors":"Pierpaolo Fucile, Francesco Lamonaca, Antonio Gloria, Lorenzo Moroni","doi":"10.21014/actaimeko.v12i4.1717","DOIUrl":"https://doi.org/10.21014/actaimeko.v12i4.1717","url":null,"abstract":"The design of scaffolds for multi-tissue regeneration is very complex in terms of material and structure, as a direct consequence of hierarchical and organizational features. TRIZ represents the Russian acronym for the “Theory of Inventive Problem Solving” (TIPS). TRIZ is able to identify and codify such principles, using them to make the creative process more predictable. It is a methodology for the identification of the system conflicts and contradictions in order to solve the inventive problems. Its multidisciplinary features and the general approach to product design can make TRIZ as an intriguing starting point for the biomimetic approach in a systematic and organized way. Biomimetics aims at a complete integration between nature and technology. In this scenario, BioTRIZ shares the contradiction resolution method of the Altshuller’s theory, representing a systematic biomimetic approach towards the product design. In the current study, BioTRIZ was considered to systematize the process of bio-inspired design of 3D optimized scaffolds for the regeneration of complex tissue defects. A device for the regeneration of osteochondral tissue defects was considered as a case study. The technical solutions involved the design of a two-compartment, hybrid and functionally graded scaffold.","PeriodicalId":37987,"journal":{"name":"Acta IMEKO","volume":"45 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139165305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Time stability of the dynamic behaviour of a 3D-printed airless wheel by stereolithography 通过立体光刻技术三维打印无气车轮动态行为的时间稳定性

Acta IMEKO Pub Date : 2023-12-21 DOI: 10.21014/actaimeko.v12i4.1693

Alessandro Annessi, A. Quattrocchi, Simone Pasinetti, M. Martarelli, P. Chiariotti, P. Castellini, Gianluca Rossi, Roberto Montanini

引用次数: 0

Generative design and insights in strategies for the development of innovative products with tailored mechanical and/or functional properties 开发具有定制机械和/或功能特性的创新产品的生成设计和战略见解

Acta IMEKO Pub Date : 2023-12-21 DOI: 10.21014/actaimeko.v12i4.1716

Ida Papallo, M. Martorelli, Francesco Lamonaca, Antonio Gloria

引用次数: 0

Clothing, textile, and fashion industry sustainability impact measurement and management 服装、纺织和时尚产业可持续性影响的测量和管理

Acta IMEKO Pub Date : 2023-12-21 DOI: 10.21014/actaimeko.v12i4.1336

Tal Madhala, William Fisher

引用次数: 0