NanoORC · Nanofluids as working fluids for organic Rankine cycles
„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“
- Период
- 2017-03-01 → 2020-02-28
- Финансиране от ЕС
- 200 195 €
- Участници
- 1
- Схема
- MSCA-IF-EF-ST
Линиите свързват координатора с партньорите.
Накратко на български
Термофизичните свойства на нови течности и нанофлуиди се анализират чрез математически модели. Това помага за създаването на по-безопасни и екологични системи, които превръщат индустриалната отпадна топлина в електричество.
Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.
Резултати накратко
Nanofluids as working fluids for organic Rankine cycles
Organic Rankine cycles power systems are expected to play a substantial role in the future European energy system, as they contribute to reduce the CO2 emissions and dependence on fossil fuels by converting low temperature heat from renewable energy or industrial waste to electrical power. However, the working fluids that they use exhibit poor environmental properties or safety issues, due to their toxicity or flammability. Consequently, many of them are being phased out. As a result, there is an urgent need for alternative working fluids. The main barrier for the introduction of novel working fluids is the lack of an accurate knowledge of their thermophysical behaviour. This project addresses the development of predictive models for the thermophysical properties of new working fluids. To this end, the project addresses the investigation of the thermophysical behaviour of novel pure fluids, fluid mixtures, and nanofluids (colloidal suspensions of nanoparticles in fluids). The prediction models rely on the use of group contribution methods. The generalization of the model for pure fluids to any chemical group was found counterproductive as it implied loss of accuracy. Therefore, the developed predictive models were tailored for specific chemical groups. The research results have demonstrated that the predictions from the developed models for pure halogenated olefins outperform those of equivalent available models. Concerning mixtures, the project addressed the improvement of mixing models for two types of cubic equations of state for mixtures of commercial refrigerants and hydrofluoroolefins. First, new parameters were fitted for the mixing model of a standard Peng Robinson equation of state. Second, parameters for the more complex mixing model of a volume translated Peng Robinson equation of state were fitted. The performance of these models was evaluated with an extensive set of experimental data. With regards to nanofluids, a broad literature overview of published thermophysical properties of nanofluids showed that data were scarce, preventing the development of reliable predictive models. To advance the knowledge of the thermophysical behaviour of nanofluids, the first comprehensive database of experimental data of nanofluids was created.
Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз
Цел на проекта
Organic Rankine cycles have gained great interest over the last decade as an efficient technology to convert low-temperature heat, from renewable energy or industrial waste, to electrical power. For this reason, they are expected to play a substantial role in the future European energy system, as they will contribute to reduce the dependence on fossil fuels and the CO2 emissions associated to power generation. However, recent regulations that limit the use of ozone depleting substances and greenhouse gases will phase out most of the working fluids currently used in organic Rankine cycles. As a result, there is an urgent necessity to search for alternative fluids that meet the thermodynamic requirements of the replaced ones, and offer better environmental and safety features. The addition of nanoparticles to fluids (nanofluids) can enhanced their thermal properties, thus making them an optimal solution for their use in organic Rankine cycles. The main barrier for the introduction of these innovative fluids comes from the lack of an accurate knowledge of their behavior. NanoORC aims at developing a general model for the estimation of the thermophysical and transport properties of nanofluids, to evaluate their potential for organic Rankine cycles. The novelty of the project lies on the use of group contribution methods to develop a generalized model that will be integrated as a property library into simulation software. The host will provide the fellow established knowledge on organic Rankine cycles, and train her on state-of-the-art simulation and optimization tools. The fellow will bring expertise on thermophysical properties of fluids, not currently available at the host institution, to introduce the research on innovative working fluids. The fellow will complete her training through a collaboration with the National Institute of Standards and Technology and a secondment at Turboden, which will be essential for the transfer of the knowledge derived from NanoORC.
Оригинален текст от CORDIS (на английски).
Участници
- DANMARKS TEKNISKE UNIVERSITET · Kongens LyngbyКоординаторДания
Връзки
Данни: CORDIS, © Европейски съюз