Development and evaluation of a method to estimate the potential of decarbonisation technologies deployment at higher education campuses

peer-reviewedThis paper describes a method for the quantitative estimation of the potential of decarbonisation technologies deployed on Higher Education Campuses (HEC). This was developed to fill the need for a practicable and standardised method to provide preliminary estimations of the deployment potential of building integrated photovoltaics (PV), micro-wind turbines, rainwater harvesting and ground mounted PV at HECs. The method identifies two key variables, namely roof area and open carpark area, to aid estimation of decarbonisation technologies deployment at HECs, using Google Earth imagery coupled with publicly available online HEC maps. The method was trialled for the higher education sector in Ireland identifying major potential for deployment of decarbonisation technologies for the sector. The building decarbonisation aspect of the proposed approach is applicable to sectors outside HEC particularly commercial and industrial sectors due to similarity in building footprint characteristics. The open carpark component of the methodology is also applicable to city-scale analysis due to uniformity in form of open carparks worldwide. This highlights the usefulness of this method through informing city-scale transitions towards decarbonisatio

Dynamic shading systems: A review of design parameters, platforms and evaluation strategies

The advancements in software and hardware technologies provide opportunities for solar shading systems to function dynamically within their context. This development has helped dynamic shading systems respond to variable environmental parameters such as sun angles and solar insolation. However, the technical understanding of system design, mechanism and controlling methods presents a challenge for architects and designers. Therefore, this study aims to review the current applications and trends of dynamic shading systems to clarify the potentials and limitations in enhancing system performance based on integrated design objectives. This study assessed several systems on the basis of a critical review to identify different models, applications and methodologies. This study is divided into two main sections: (i) design elements and platforms that engage with specific methods in creating a dynamic shading system and (ii) evaluation strategies to examine system performance. The systems were investigated based on the multiplicity and integration of the parameters involved through various components, such as architectural, mechanical, operational and automation components. The review analysed various studies on the following two bases: (1) geometric-based analysis, which distinguishes between simple and complex shading models, and (2) performance-based analysis, which assesses the shading systems based on two groups of methodologies, namely, theoretical and experimental. The outcome of the review reflects a clear classification of shading models and a comprehensive analysis of their performance. This study generally provides a systematic framework for architects based on thorough research and investigation. Finally, the study introduced several findings and recommendations to improve the performance of dynamic shading systems

Techno-Economic Approach to Solar Energy Systems Onboard Marine Vehicles

The world is facing the challenge of continuously increasing energy consumption. At the same time, the energy resources are getting scarcer. Despite a sudden significant drop of fuel prices worldwide, research activities that focus on reducing the dependence on fossil fuels as a traditional source of energy still have the preference in the field of shipping industry. The use of clean and renewable energies, such as solar energy for instance, is proposed as a method to improve the ship efficiency. Ships can get the benefits from solar energy due to the fact that most of their upper decks are always exposed to the Sun, especially in sunny water regions. The present paper discusses the effectiveness and challenges of installing solar panels for auxiliary power production on board a ship. As a case study, the research evaluates both economic and environmental benefits resulting from implementing such concept aboard a research vessel

The Changing Role of Natural Gas in Nigeria

Nigeria is richly endowed with energy resources, and the Government has been making large profits from their export. However, windfall revenues have also been affecting the Government’s responsiveness and accountability towards the people and they have brought it into collusive relationship with international oil and gas companies operating in the country. A skewed distribution of petroleum resources costs and benefits, as well as the dependence on exports exposing the public finances to volatility in the international markets have represented further major issues. As a result, energy access and power generation still represent urgent issues for action in the country. Solid biomass accounts for 74% of the primary energy consumption, while the electrification rate stands at 34% in rural areas. Active power plants are mainly gas-fired, but they face capacity, maintenance, and financial constraints. While historically natural gas has been disregarded or flared into the atmosphere because it was considered a by-product of oil due to lacking market conditions and processing capacity, today the development of a domestic market for natural gas is seen as a key priority to guarantee energy security and boost industrial development in Nigeria. A more efficient and equitable governance of the sector and management of export revenues can play a major role in this sense. In this context, this paper highlights the main current issues and underpins key policy conditions for this transition to take place in Nigeria