Search results for "power"
showing 10 items of 5099 documents
Indagine antropo-educativa dei bisogni dei minori “fuori” famiglia e dei care leavers
2021
This chapter offers an anthropoloigcal and pedagogical perspective from the results obtained within the European project “Children for children wellbeing: strengthening national child care system to guarantee equal rights for all children ", of which the University of Palermo was a partner, aimed at children in care and care leavers.
Assessing the Energy-Saving Potential of a Dish-Stirling Concentrator Integrated into Energy Plants in the Tertiary Sector
2021
Energy consumed for air conditioning in residential and tertiary sectors accounts for a large share of global use. To reduce the environmental impacts burdening the covering of such demands, the adoption of renewable energy technologies is increasing. In this regard, this paper evaluates the energy and environmental benefits achievable by integrating a dish-Stirling concentrator into energy systems used for meeting the air conditioning demand of an office building. Two typical reference energy plants are assumed: (i) a natural gas boiler for heating purposes and air-cooled chillers for the cooling periods, and (ii) a reversible heat pump for both heating and cooling. For both systems, a dis…
A Validation Methodology for a Combined Heating Cooling and Power (CHCP) Pilot Plant
2004
A great number of variables significantly influence the energetic, environmental and economic results of CHP (Combined Heating and Power) and CHCP (Combined Heating Cooling and Power) plants operation, and as a consequence their project activity is rather complex. In order to select the best layout and properly size the machines, detailed data on hourly electric, thermal, and cooling demand are necessary, so that a series of plant life cycle simulations may have to be carried out. Unfortunately, such detailed data are rarely available, because energy consumptions data for existing buildings are usually derived from aggregated monthly or bimonthly gas and electricity bills. Even more difficu…
Life Cycle Assessment Performance Comparison of Small Solar Thermal Cooling Systems with Conventional Plants Assisted with Photovoltaics
2012
Abstract Life Cycle Assessment (LCA) allows for the consideration of energy consumption and environmental impacts associated with all the stages of a product's life, from the cradle to the grave . Starting from the results obtained in the IEA SHC Task 38 framework for the LCA of small solar assisted heat driven chillers, the application of such methodology has been extended to systems with a conventional compression chiller assisted by a photovoltaic plant. This study aims to provide a more comprehensive investigation through a comparison of these two families of solar assisted cooling systems (with solar thermal or PV), which is an important topic for studies concerning the research of eff…
A methodology for sizing a trigeneration plant in mediterranean areas
2003
Combined heat and power production is an old and well-known technique for the rational use of energy and, thanks to more than fifty years of experience, the state of art can be considered very advanced from a technological point of view. Trigeneration, that is combined electric, heat and cooling energy production, is however a quite recent technology and is becoming economically viable thanks to the commercial spread of absorption chillers. In fact, a well-projected trigeneration plant can achieve better results than a cogenerative one. The CHCP plant benefits over CHP will be underlined, showing the effects of regularisation of annual thermal load curves generated by consumption for feedin…
Exergoeconomic analysis as support in decision-making for the design and operation of multiple chiller systems in air conditioning applications
2020
Abstract Multiple-chillers systems represent viable solutions for medium/large-scale air conditioning applications characterized by variable cooling demand. The energy efficiency of such systems is influenced by the number of chillers, the combination of cooling capacities, and the load-sharing among the units. Large efforts have been devoted to developing efficient operation strategies for these systems, but rules of thumb are usually adopted for selecting cooling capacities thus leaving room for energy and economic savings. In this paper, exergoeconomic analysis is proposed as a promising method to identify near-optimal design and operation strategies, due to the capability of exergoecono…
Life cycle performance assessment of small solar thermal cooling systems and conventional plants assisted with photovoltaics
2014
Starting from the results of a Life Cycle Assessment of small solar assisted heat driven chillers, the application of such methodology has been extended to systems with a conventional compression chiller assisted by a photovoltaic plant (PV). This study aims to provide a comprehensive compared investigation of these two families of solar assisted cooling systems (with solar thermal or PV). Results indicate that, in many cases, the systems with the PV grid connected plant performed best. In addition, two more configurations were investigated to further define the PV assisted systems, which minimise their interaction with the grid through the use of electricity storages. These systems performed…
Guanxi and social capital: Networking among women managers in China and Finland
2014
Considering that women are still under-represented in management, researchers have claimed that networking is an important career management tool for women. This study aims to empirically explore how women managers benefit from social networks in the information technology (IT) field in China and Finland. Guanxi, an Eastern term for social networking, has seldom been studied in terms of gender and career, especially within cross-cultural research. Social capital is a Western term for social networks. Using questionnaires, in-depth interviews and interpretive analysis, we compare the composition and structure of social networks used by women managers within the information technology sector …
Chinese ‘Enormous Hospitality’ Versus Finnish ‘Meeting Among Friends’ : Guest-Host Positioning in China Finland Delegation Visits
2017
The importance of co-operation with China has been growing in Finland lately in view of interest to attract Chinese investments and the increasing importance of China on a global scale. Finland has established governmental agencies to aid Chinese investment and ensured the co-operation of regional and local governments in the framework activities, such as town twinning. An important part of investment facilitation and wider co-operation comprises delegation visits by both interested nations to the other country. These involve enterprise interest matchmaking events, meetings with officials, company visits, etc. Based on interview and observation data, this paper elaborates on how the phenome…
Finnish–Chinese investment negotiation: power positioning and search for common ground
2018
This article explores what kind of a role ‘the rise of China’ plays in negotiation and searches for common ground between Finnish and Chinese representatives in the context of Chinese investment, t...