scholarly journals Evaluation of in-depth energy modelling for the design and operation of a net-positive energy Solar Decathlon house

2019 ◽  
Vol 111 ◽  
pp. 04024
Author(s):  
Brendan Banfield ◽  
Clayton McDowell ◽  
Duane A. Robinson ◽  
Ashish Agalgaonkar
Keyword(s):  
Thermal Comfort ◽  
Real Data ◽  
Thermal Modelling ◽  
Positive Energy ◽  
Solar Pv ◽  
Solar Decathlon ◽  
Energy Modelling ◽  
Solar Powered ◽  
Energy Simulations ◽  
Modelling Process

The Solar Decathlon is an international competition that challenges collegiate teams from around the world to design and build functioning, sustainable, solar powered houses. The competition is split into ten sub-contests which vary from competition to competition. Contests are a combination of juried (judged by a panel experts) or measured (such as energy usage and thermal comfort) contests. This paper will focus on the measured contests, in particular; energy management, comfort conditions and house functioning. To ensure optimal house performance during the competition, extensive energy and thermal modelling is required to ensure the solar PV and on-site energy storage can achieve net-zero energy while also ensuring the heating, ventilation and air conditioning (HVAC) system can meet the strict indoor thermal comfort requirements set by the competition. This paper will review the energy and thermal modelling process of Team UOW Australia’s net-positive energy house, the ‘Desert Rose’, that achieved second place in the Solar Decathlon Middle East (SDME) competition in 2018. Upon reviewing the energy modelling process, the results from the energy simulations will be compared to the real data that was obtained during the SDME competition to determine the validity of the energy simulations and the subsequent benefits of in-depth energy modelling for competing in a Solar Decathlon.

scholarly journals Predicted Medium Vote Thermal Comfort Analysis Applying Energy Simulations with Phase Change Materials for Very Hot-Humid Climates in Social Housing in Ecuador

2021 ◽  
Vol 13 (3) ◽  
pp. 1257
Author(s):  
Luis Godoy-Vaca ◽  
E. Catalina Vallejo-Coral ◽  
Javier Martínez-Gómez ◽  
Marco Orozco ◽  
Geovanna Villacreses
Keyword(s):  
Thermal Comfort ◽  
Phase Change ◽  
Social Housing ◽  
Energy Demand ◽  
Phase Change Materials ◽  
Thermal Sensation ◽  
Electricity Consumption ◽  
Different Types ◽  
Climate Influences ◽  
Energy Simulations

This work aims to estimate the expected hours of Predicted Medium Vote (PMV) thermal comfort in Ecuadorian social housing houses applying energy simulations with Phase Change Materials (PCMs) for very hot-humid climates. First, a novel methodology for characterizing three different types of social housing is presented based on a space-time analysis of the electricity consumption in a residential complex. Next, the increase in energy demand under climate influences is analyzed. Moreover, with the goal of enlarging the time of thermal comfort inside the houses, the most suitable PCM for them is determined. This paper includes both simulations and comparisons of thermal behavior by means of the PMV methodology of four types of PCMs selected. From the performed energy simulations, the results show that changing the deck and using RT25-RT30 in walls, it is possible to increase the duration of thermal comfort in at least one of the three analyzed houses. The applied PCM showed 46% of comfortable hours and a reduction of 937 h in which the thermal sensation varies from “very hot” to “hot”. Additionally, the usage time of air conditioning decreases, assuring the thermal comfort for the inhabitants during a higher number of hours per day.

scholarly journals REVIEW DAN ANALISIS PERKEMBANGAN PLTS PADA SARANA TRANSPORTASI LAUT

2021 ◽  
Vol 4 (2) ◽  
pp. 105-118
Author(s):  
Made Puji Dwicaksana ◽  
I Nyoman Satya Kumara ◽  
I Nyoman Setiawan ◽  
I Made Aditya Nugraha
Keyword(s):  
Online Survey ◽  
Solar Power ◽  
Solar Array ◽  
Production Volume ◽  
Solar Pv ◽  
Passenger Transportation ◽  
Battery Capacity ◽  
Array Structure ◽  
Solar Powered ◽  
Fixed Array

This paper aims to review the current development of vessels with solar power to reference the research and development of solar power vessels in Indonesia. The research method is a systematic literature review on the development of solar-powered vessels and includes an online survey of vessels using solar PV. This study found 86 solar-powered vessels consisting of boats, utility boats, ferries, houseboats, research, vehicle carriers, dive boats, and yachts developed from 1988 to 2020. These solar-powered vessels were built for various functions such as competitions, cleaning the environment, passenger transportation, and water tourism.  Production of solar-powered vessels is increasing in terms of production volume, PV capacity, and battery capacity. In terms of PV configuration, the solar array is dominated by a fixed array structure. However, there have been innovations using sun-tracking, wind tracking airfoils, and expandable channels to increase PV capacity.

scholarly journals Solar PV Fed Irrigation Pump

2019 ◽  
Vol 8 (4) ◽  
pp. 8616-8620
Keyword(s):  
Hardware Implementation ◽  
Advanced Technology ◽  
Simple Design ◽  
Solar Pv ◽  
Alternative Source ◽  
Promising Alternative ◽  
Agricultural Growth ◽  
Dc Voltage ◽  
Irrigation Technology ◽  
Solar Powered

Agricultural growth has been severely affected due to the constraints in irrigation-energy deficits. Due to the availability of abundant solar energy especially in India for all days, solar powered irrigation technology has been a promising alternative source compared to canonical electricity and diesel focused pumping systems. How to furnish an electric power suitable to drive an irrigation pump for agricultural purposes in isolated areas using solar PV panels is the problem. This project deals with solving a local irrigation problem in countries. In this proposed project a simple design of simulation and analysis of a PMSM fed by a solar PV, modelled through DC/DC converter controlled by a MPPT and for utilizing the power from Solar. Compared to all converters, luo converters is the advanced technology. POSL luo converter are of new DC-DC step-up converter. This POSL luo converter performs positive to positive DC-DC voltage increasing conversion. The hardware implementation has been done for positive output super-lift luo converter respectively.

Fuzzy Logic-based Battery Management System for Solar-Powered Li-Ion Battery in Electric Vehicle Applications

2020 ◽  
pp. 2150043
Author(s):  
P. Justin Raj ◽  
V. Vasan Prabhu ◽  
K. Premkumar
Keyword(s):  
Fuzzy Logic ◽  
Management System ◽  
Lithium Ion ◽  
Battery Management System ◽  
Solar Photovoltaic ◽  
Battery Management ◽  
Solar Pv ◽  
Battery System ◽  
Flyback Converter ◽  
Solar Powered

This paper presents the solar powered charging control of lithium-ion battery. The flyback converter is used to extract the maximum power from the solar photovoltaic (PV) array and charge the battery. This paper also presents the fuzzy logic-based battery management system to protect the batteries due to overcharging and over-discharging conditions. The proposed method is designed and developed in the MATLAB/Simulink platform. Solar PV powered battery system is tested for step change in irradiance conditions and corresponding results are measured and analyzed. The effectiveness of the fuzzy logic-based battery management system is also presented. The simulation model for BMS technique has overall efficiency of 95.1%. In order to verify the effectiveness of the proposed system, experimental verification of the proposed method is implemented in real time and compared with simulation results.

On the Overall Energy Efficiency of a High-Performance Solar Energy Residential Building

2010 ◽  
Author(s):  
Adam J. Wong ◽  
Jorge E. Gonza´lez ◽  
Sergio Escobar ◽  
Mark Aschheim
Keyword(s):  
Solar Energy ◽  
High Performance ◽  
Residential Building ◽  
Weather Conditions ◽  
Energy Performance ◽  
Solar Thermal ◽  
Hvac System ◽  
Solar Pv ◽  
Solar Decathlon ◽  
Pv Array

This paper describes the energy performance of a solar house over its first year of monitoring. The 2007 Solar Decathlon house currently sits on Santa Clara University’s campus at 60.4 m2. The house is powered entirely by solar PV and solar thermal off the grid. This solar energy house is heavily instrumented with more than 100 sensors to measure temperatures, humidity, power consumption of electric appliances, lighting, water, and performance of a 7.2 kW solar PV array and a sophisticated HVAC system. The instrumentation includes a full weather station. The house is divided into two interconnected modules, and constructed with high thermal insulation and sustainable materials. The instrumentation also allows quantifying energy performance of individual components as well as the overall energy performance of the house. The paper focuses on the complete energy balance of the house as a function of weather conditions, and of the performance of individual components. Of particular interest is the performance of the solar PV and solar thermal systems. The solar thermal system includes an absorption air conditioning unit, integrated with a thermal storage tank to provide all energy needs for water consumption and heating. The I-V curves of the full PV array are reported, demonstrating peak, off-peak, and seasonal performance and deviations from manufacturers’ conditions. Similarly, the overall COP of the solar-driven HVAC system is reported for both cooling and heating modes. Finally, it is shown how data can be used to demonstrate improvement of simulation tools for solar building energy performance. Although data has been collected since March 2009, this paper focuses on performance during summer 2009.

scholarly journals Solar decathlon Europe 2019: The resilient nest as a solar powered and energy efficiency rooftop house for urban density

2020 ◽  
Vol 463 ◽  
pp. 012033
Author(s):  
Kasan Chanto ◽  
Peerasit Mahasuwanchai ◽  
Warawit Eakintumas ◽  
Choophong Lairat ◽  
Nutkitti Thavornsettawat ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Urban Density ◽  
Solar Decathlon ◽  
Solar Powered

scholarly journals Design and Experimental Investigation of Portable Solar Thermoelectric Refrigerator

2017 ◽  
Vol 14 (1) ◽  
Keyword(s):  
Economic Analysis ◽  
Thermoelectric Module ◽  
Electrical Energy ◽  
Heat Sinks ◽  
Maintenance Cost ◽  
Solar Pv ◽  
Cold Surface ◽  
Electric Power Supply ◽  
Heating And Cooling ◽  
Solar Powered

The aim of this project is to design a portable solar thermoelectric refrigerator for people living in remote areas, or outdoor applications where electric power supply is absent. The design of the solar-powered refrigerator based on the principle of the thermoelectric module to create a hot side and cold side. Solar PV module is used to supply electrical energy to the thermoelectric module to generate hot and cold effects for heating and cooling application. A wellinsulated rectangular container made of aluminum is used as a cooling chamber. To enhance the cooling effect, heat sinks and electric fans are added to the hot side to cool down the thermoelectric modules. The system was able to reach 40 C in the cold surface of the TEM and 100 C as the refrigerant temperature and 300 C in hot chamber with 0.66 COP. An economic analysis is carried out to study the viability of this novel technique. Economic analysis reveals that the system has sufficient amount of saving due to renewable source of energy which is free and lower maintenance cost. One more major advantages of the proposed refrigerator is its longer lifetime that might reach up to 40 years

scholarly journals Solar Decathlon. Interdisciplinary and collaborative research competing on a world stage

2017 ◽  
Vol 2 (3) ◽  
pp. 31
Author(s):  
Guy Marriage
Keyword(s):  
Collaborative Research ◽  
International Student ◽  
Architectural Education ◽  
Collaborative Project ◽  
Team Members ◽  
Solar Decathlon ◽  
Student Teams ◽  
Wide Range ◽  
Design Build ◽  
Solar Powered

<p>The Solar Decathlon is an international student competition requiring university-led interdisciplinary student teams to research, design, build and operate a solar-powered house. Projects like this are highly competitive but have significant learning benefits for those involved. The Decathlon requires a wide range of student skills and so is by nature highly interdisciplinary. To win requires a significant amount of collaboration between team members who must rapidly accumulate specialised knowledge of diverse fields including solar design. This paper looks at the Solar Decathlon 2011 project submitted by Victoria University of Wellington, New Zealand, examines the pedagogical methodologies used, and debates the usefulness of this type of interdisciplinary and collaborative project for students of a school of architecture. It notes the difficulties placed on integration of a single-project focus on the wider scope of a typical architectural education and proposes that the broader degree curriculum may benefit from evolving to better accommodate the flexibility needed for targeted design-led research competitions such as the Solar Decathlon.</p>

scholarly journals Solar Pv Fed Grid Connected System With Reactive Power And Harmonics Compensation

2021 ◽  
Vol 12 (3) ◽  
pp. 3417-3428
Author(s):  
M.Balasubramanian Et.al
Keyword(s):  
Distribution System ◽  
Power Efficiency ◽  
Reactive Power ◽  
Renewable Energy Sources ◽  
Solar Pv ◽  
Synchronous Reference Frame ◽  
Three Phase ◽  
Full Power ◽  
Solar Powered ◽  
Power Point

The aim of this paper is to use renewable energy sources to meet the demand for electricity. For DC-AC conversion, a solar-powered three-phase grid-connected system with a boost (DC-DC) converter and three-phase inverter is used. The updated Perturb and Observe (P&O) Algorithm is used to map the solar photovoltaic system's maximum power point. Synchronous Reference Frame-Phase Locked Loop Theory is used to compensate for harmonic and reactive power. This proposed grid-connected system is used to improve the system's power efficiency as well as extract the full power and feed it to the distribution system. Using Matlab tools, the simulation result demonstrates reasonable efficiency.

Conceptual Design and Prototype Development of a Solar-Powered Ground Robot for Energy-Autonomous Operation

2019 ◽  
Author(s):  
Amir Behjat ◽  
Leighton Collins ◽  
Andrew Hoffman ◽  
Sharat Chidambaran ◽  
Maulikkumar Dhameliya ◽  
...  
Keyword(s):  
Conceptual Design ◽  
Incident Angle ◽  
Optimization Approach ◽  
Solar Pv ◽  
Solar Panels ◽  
Energy Capture ◽  
Prototype Development ◽  
Autonomous Operation ◽  
Outdoor Environments ◽  
Solar Powered

Abstract This paper presents the conceptual design and fabrication/assembly of an autonomous solar powered small unmanned ground vehicle (UGV) platform for operation in outdoor environments. The contribution lies in the ability of the proposed design to offer uninterrupted operation in terms of endurance, to facilitate educational and research applications that are otherwise challenging to perform with a typical UGV (that needs significant downtime for recharging). A high incident area for solar PV panels is required to be able to support the complete energy needs of a ∼ 46 lb UGV (i.e., fully recharge the suitably sized battery powering the UGV). This makes it challenging to develop a stable platform that can carry solar panels much larger than the surface area of the platform itself (an aspect receiving minimal attention in other similar purpose platforms). To address this challenge, a novel umbrella-like folding mechanism is conceived, designed and successfully incorporated in the baseline prototype. This mechanism allows incorporating a remarkable ∼1 sq.m of incident solar PV with a net rated capacity of 200 W, one that remains folded to facilitate mobility, and can open/unfold to different extents for energy capture when needed. At the same time, the proposed design facilitates static and dynamic stability in spite of the significant solar PV incorporation. With the reference of the baseline prototype, an optimization approach is taken to develop a conceptual design of the next generation of this solar UGV. Specifically, the incident angle of the solar panels (enabled by the umbrella mechanism) at complete-open stage and the dimensions of the mechanism links and associated supports are separately optimized to respectively maximize the energy capture and the range of the UGV (assuming operation in Buffalo, NY), subject to stability and nominal velocity (of 2km/hr) constraints. The optimum design is found to provide an estimated range of 19.8 km/day.

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