Architectural Simulation of Hybrid Energy Harvesting: A Design Experiment in Lanzarote Island

This study conducts research on an architectural design based on energy harvesting technology. The research subject is a pergola-style structure to be built in a square in Arrecife, the Spanish territory of Lanzarote Island. The architectural design based on the energy harvesting technology developed in this research utilizes solar energy. To install a solar panel on the roof of the pergola, the optimal tilt angle from January to December was derived by using a function that considered the latitude and solar declination value of the study site, and the amount of renewable energy generation was calculated. The architectural design based on energy harvesting also utilizes wind power. To transform wind power into renewable energy, piezoelectric materials that trigger renewable energy with the micro-vibrations generated by wind power are applied to the architectural design. The amount of energy generation was calculated considering the wind power and wind direction in the location where the pergola should be built; in addition, this calculation used information from prior studies on piezoelectric materials. This article is significant, as it has developed an architectural design where hybrid energy harvesting technology that utilizes two types of natural energy (solar and wind) is applied to a building façade.

DVFS and Its Architectural Simulation Models for Improving Energy Efficiency of Complex Embedded Systems in Early Design Phase

Dealing with resource constraints is an inevitable feature of embedded systems. Power and performance are the main concerns beside others. Pre-silicon analysis of power and performance in today’s complex embedded designs is a big challenge. Although RTL (Register-Transfer Level) models are more precise and reliable, system-level modeling enables the power and performance analysis of complex and dense designs in the early design phase. Virtual prototypes of systems prepared through architectural simulation provide a means of evaluating non-existing systems with more flexibility and minimum cost. Efficient interplay between power and performance is a key feature within virtual platforms. This article focuses on dynamic voltage and frequency scaling (DVFS), which is a well-known system-level low-power design technique together with its more efficient implementations modeled through architectural simulation. With advent of new computing paradigms and modern application domains with strict resource demands, DVFS and its efficient hardware-managed solutions get even more highlighted. This is mainly because they can react faster to resource demands and thus reduce induced overhead. To that end, they entail an effective collaboration between software and hardware. A case review in the end wraps up the discussed topics.

Daylight and Architectural Simulation of the Egebjerg School (Denmark): Sustainable Features of a New Type of Skylight

This article discusses the performance of a new skylight for standard classrooms at the Egebjerg School (Denmark), which was built ca. 1970. This building underwent important reforms under a European project to which the authors contributed. This research aimed to create a new skylight prototype that is useful for several schools in the vicinity, since there is a lack of educational facilities. The former skylights consisted of plastic pyramids that presented serious disadvantages in terms of sustainability matters. During the design process, the priority changed to studying the factors that correlate daylighting with energy and other environmental aspects in a holistic and evocative approach. Accordingly, the new skylight features promote the admittance and diffusion of solar energy through adroit guidance systems. In order to simulate different scenarios, we employed our own simulation tool, Diana X. This research-oriented software works with the effects of direct solar energy that are mostly avoided in conventional programs. By virtue of Lambert’s reciprocity theorem, our procedure, which was based on innovative equations of radiative transfer, converts the energy received by diffusive surfaces into luminous exitance for all types of architectural elements. Upon completion of the skylights, we recorded onsite measurements, which roughly coincided with the simulation data. Thus, conditions throughout the year improved.

Simulator Arsitektural Dari Sirkuit Elektronis Guna Tujuan Pembelajaran

<p align="justify">The electronic circuit engineering learning processes generally requires specific infrastructures which sometimes constrained to cost factors in the procurement. Circuit simulator could be an alternative as electronic circuit engineering learning tool. Architectural simulation provides designers the ability to quickly examine a wide variety of design choices. The recent trend in system design toward architectures that react to circuit-level phenomena has outstripped the capabilities of traditional cycle-based architectural simulators. In this paper, a simulator that incorporates a circuit modeling capability, permitting architectural-level simulations that react to circuit characteristics (such as latency, energy, power brightness, or current draw) on a cycle-by-cycle basis is presented. As for learning purpose, circuit template and pre-built circuits for many categories are provided. The environment enables process visualization and simulation of analog and digital circuits. The system enables the creation of many laboratory exercises, which offer students opportunities to follow visually characteristic processes in analog and digital circuits. At this research, Rational Unified Process (RUP) software process model and Object Oriented Programming (OOP) are implemented.<br />Keywords: architectural simulation, circuit simulation, learning, RUP, OOP</p>