An improved typical meteorological year for solar energy simulations in Rarotonga, Cook Islands

2022 ◽  
pp. 1-8
Author(s):  
Timothy Anderson
Keyword(s):  
Solar Energy ◽  
Cook Islands ◽  
Energy Simulations

Determining typical weather for use in solar energy simulations

Solar Energy ◽  
1978 ◽  
Vol 21 (1) ◽  
pp. 55-59 ◽  
Author(s):  
William R. Petrie ◽  
Michael McClintock
Keyword(s):  
Solar Energy ◽  
Energy Simulations

scholarly journals RECONCILING CITY MODELS WITH BIM IN KNOWLEDGE GRAPHS: A FEASIBILITY STUDY OF DATA INTEGRATION FOR SOLAR ENERGY SIMULATION

2020 ◽  
Vol VI-4/W1-2020 ◽  
pp. 93-99
Author(s):  
W. Huang ◽  
P.-O. Olsson ◽  
J. Kanters ◽  
L. Harrie
Keyword(s):  
Solar Energy ◽  
Semantic Web ◽  
Data Retrieval ◽  
Building Model ◽  
City Model ◽  
Knowledge Graphs ◽  
Energy Simulations ◽  
The City ◽  
City Models

Abstract. Solar energy simulations are used to quantify the potential of the passive use (daylight, solar gains) and the active use (photovoltaics and solar thermal) of solar energy. The simulations can be performed at different scales e.g. buildings, neighbourhoods and cities, with different requirements on the data. For example, for the neighbourhood simulations we need simplified building geometries that can be retrieved from city models, and window information that can be extracted from BIM models (as in many cases window information is missing in city models). In this context, city models and BIM need to be integrated and reconciled. In this paper, we investigate two approaches to integrate and retrieve such information in a case study, where the BIM data is stored in IFC and the city model in CityGML (LOD2). The first approach is to perform a schema matching in an ETL tool, so as to convert and import window information from the IFC file into the CityGML model to create a LOD2-3 building model. We also investigate an alternative avenue, namely a semantic web approach, in which both the BIM and city models are transformed into knowledge graphs (linked data). City models and BIM utilize their respective but interlinked domain ontologies. Particularly, two ontologies are investigated for BIM data, i.e., the ifcOWL ontology and the building topology ontology (BOT). This paper compares different paths of such integrative data retrieval, as well as discloses the gaps mainly with the semantic web approach to further unlock its potential.

COMPARING BUILDING SURFACES’ ORIENTATIONS TO OPTIMIZE SOLAR ENERGY COLLECTION

2020 ◽  
Vol 15 (2) ◽  
pp. 3-28
Author(s):  
Brian A. Rock
Keyword(s):  
Solar Energy ◽  
High Performance ◽  
Energy Systems ◽  
Green Buildings ◽  
Net Zero ◽  
Building Surfaces ◽  
Data Tables ◽  
Energy Simulations ◽  
Detailed Computer ◽  
Incoming Energy

ABSTRACT Net-zero and other high performance green buildings normally do or should include optimized solar energy systems. While detailed computer-based energy simulations of buildings’ energy systems are becoming near-commonplace for many projects, simple, easy-to-use data tables are beneficial earlier in the design process to help guide preliminary decisions in all projects. Practical lookup tables, and then comparison of the data they contain, are also very useful for teaching new concepts, in this case for learning about solar orientations in sunny locations. Engineers, architects, design-build contractors, students, and other designers of green buildings can benefit through knowing, in advance, how exterior surfaces’ orientations increase or decrease the total annual solar energy arriving upon those surfaces. For example, maximizing the incoming energy on a particular roof is advantageous for gathering solar energy for heat or for conversion of that sunlight to electricity, but various requirements often limit designers’ choices for surfaces’ orientations. This paper presents simple tables that form a tool for making initial decisions on surfaces’ directions and slopes; the user can then study various effects further, such as local factors including cloudiness and shading, with detailed software. The classical solar geometry equations utilized are documented here for repeatability of the research, but are not necessary for use of this paper’s tables. Practical examples are given too to help readers use the tables.

Rendez vous with Saturn's rings

1984 ◽  
Vol 75 ◽  
pp. 743-759 ◽  
Author(s):  
Kerry T. Nock
Keyword(s):  
Solar Energy ◽  
Electric Propulsion ◽  
Power Source ◽  
Propulsion System ◽  
Low Thrust ◽  
Ring Plane ◽  
The Earth ◽  
Total Impulse ◽  
Saturn's Rings

ABSTRACTA mission to rendezvous with the rings of Saturn is studied with regard to science rationale and instrumentation and engineering feasibility and design. Future detailedin situexploration of the rings of Saturn will require spacecraft systems with enormous propulsive capability. NASA is currently studying the critical technologies for just such a system, called Nuclear Electric Propulsion (NEP). Electric propulsion is the only technology which can effectively provide the required total impulse for this demanding mission. Furthermore, the power source must be nuclear because the solar energy reaching Saturn is only 1% of that at the Earth. An important aspect of this mission is the ability of the low thrust propulsion system to continuously boost the spacecraft above the ring plane as it spirals in toward Saturn, thus enabling scientific measurements of ring particles from only a few kilometers.

On the Conservation of Solar Energy

1882 ◽  
Vol 13 (333supp) ◽  
pp. 5317-5317
Author(s):  
W. B. Carpenter
Keyword(s):  
Solar Energy

You say : Solar energy ? What do you mean ?

1999 ◽  
Vol 09 (PR3) ◽  
pp. Pr3-41-Pr3-46
Author(s):  
C. Royère
Keyword(s):  
Solar Energy

Light & Engineering / Svetotekhnika Journal: A Review of 2017 and Looking Forward to 2018-2020

2018 ◽  
pp. 4-6
Author(s):  
Julian B. Aizenberg ◽  
Vladimir P. Budak
Keyword(s):  
Solar Energy ◽  
Large Series ◽  
Energy Technology ◽  
Current State ◽  
Engineering Journal

2017 has been a very productive and interesting year for our journal Light & Engineering/Svetotekhnika. It was marked by the publication of a large series of analytical reviews on the current state and prospects for the development of a number of important areas of lighting engineering (a total of 12 reviews), the publication of the regional volume of the Light & Engineering Journal (No. 3) devoted to solar energy technology in China (250 pages, 33 articles), further expansion of publications by international authors in Light & Engineering (since 2010, 120 articles by 230 authors from 23 countries have been published).

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