Consumer Perceptions of the Energy Market Q3 2019
This is Q3 2019 update of results from our survey monitoring domestic consumers’ perceptions of service in the energy market.02/12/19
Consumer Perceptions of the Energy Market Q4 2019
This is the Q4 2019 update of results from our survey monitoring domestic consumers’ perceptions of service in the energy market.20/03/20
How many undocumented children live in London?
Estimating the numbers of migrants in the UK is notoriously difficult, especially those with an irregular migration status who may not be counted in official government statistics. It is not for nothing that the task has been described as counting the uncountable. However, information about the population of children and young people who are not…20/01/20
Microbusiness research synthesis slide pack
This slide pack supports our Microbusiness Strategic Review, by identifying and utilising relevant published research to help build a robust evidence base.31/05/19
Housing & Energy
The post Housing & Energy appeared first on CDRC.25/04/18
Hydrogen: A renewable energy perspective
This paper examines the potential of hydrogen fuel for hard-to-decarbonise energy uses, including aviation, shipping and other. But the decarbonisation impact depends on how hydrogen is produced.
Countries Look to Advance Green Hydrogen Production for a Deep Energy Transformation
At the second meeting of the Collaborative Framework on Green Hydrogen, the International Renewable Energy Agency (IRENA) gathered global public and industry stakeholders to discuss how green hydrogen can advance towards cost competitiveness.
Use of the MPS method to estimate the energy conversion efficiency of the OWC-WEC
In recent years, ocean renewable energy has been increasingly in the spotlight due to global warming and energy issues etc. Research on ocean renewable energy devices is being carried out by many researchers, companies and countries. Additionally, many sea tests are being carried out by countries with real sea test sites. Ocean renewable energy devices still need to research about a power generation method, an energy conversion efficiency and costs etc. In this paper, Authors focus on the oscillating water column type wave energy converter (called below OWC-WEC). It is considered that the OWC-WEC is useful because a movable part which becomes a cause of trouble is few and can also be used as a breakwater device. In this study, the MPS (Moving Particle Semi-implicit) method is applied to the performance analysis of the OWC-WEC. It is because the performance analysis by various parameters and the reduction of an experimental cost is needed. In this paper, these following items are shown; 1) the development of analysis program code which can simulate the multiphase flow by three phases of gas, liquid and solid, 2) the development of air duct model, 3) verification of the usefulness of the improved MPS program code and 4) verification of the applicability to the performance analysis of the OWC-WEC. This program code was applied to the simulation of the fixed type OWC-WEC. Following this, the reproducibility of the primary conversion efficiency of the fixed type OWC-WEC by this program code was verified and discussed. Finally, the usefulness and applicability of this program code were discussed and recommendations for future work were made.
Motion response and energy conversion performance of a heaving point absorber wave energy converter
The heaving wave energy converter (WEC) is one typical type of point absorber WECs with high energy conversion efficiency but significantly affected by the viscous effect. It is widely known that the bottom shape of such WECs plays an important role in influencing the viscosity, so a detailed qualitative investigation is essential. Here a numerical study is performed for the influence of bottom shape on motion response and energy conversion performance of a heaving WEC. The numerical model is developed based on the potential flow theory with a viscous correction in the frequency domain. Cylindrical WECs with flat, cone, and hemispherical bottoms and the same displacement are considered. WECs with larger diameter-to-draft ratios (DDRs) are found to experience a relatively smaller viscous effect and achieve effective energy conversion in a broader frequency range. With the same DDR, the flat bottom has the most considerable viscous effect, following by the cone bottom with conical angles 90° and the hemispherical bottom. When the DDR is relatively small, the hemispherical bottom had the best energy conversion performance. Similarly, when the DDR is relatively large, the energy conversion performance of the floater with a hemispherical bottom and a cone bottom with 90° is better, while that with the flat bottom is the worst.
Ref 2: University of Strathclyde – Asssesment of Risks Resulting from the Adjustment of RoCoF Based Loss of Mains Protection Settings Phase II