Journal of Energy & Technology (JET) [U.S. ISSN 2768-1025] <p><strong>About this Journal</strong></p> <p>The <em><strong>Journal of Energy &amp; Technological (JET) </strong></em>(U.S. ISSN 2768-1025) is an open-access journal that includes a broad range of specific and subfields of generating energies and technologies. This document encourages a wide range of contributions in the area of renewable and non-renewable energy sources. Interdisciplinary contributions are also encouraged. This open-access journal welcomes submissions on all aspects of energy-related engineering and science.</p> en-US (Editorial Office) (Technical Staff) Wed, 30 Jun 2021 00:00:00 +0000 OJS 60 How COVID-19 Impacted CO2 Emissions Based on Electricity Usage: A Machine Learning Approach <p>The goal of this study is to determine the difference in CO2 emissions between 2019-2020 and 2020-2021, more specifically during lockdown periods during the COVID-19 pandemic. In the beginning of the pandemic, most countries were forced into lockdowns, and a countless number of people had to continue their daily work from home in isolation. Previously, people would go to an office or to school and leave their houses empty for eight hours, without having lights or any electronics on. Because of this, there should be a direct correlation between electricity usage before and during lockdowns, as a private residence should have higher electricity consumption during 2020-2021, when they are at home. Using machine learning, we will investigate to see if COVID-19 affected CO2 emissions as a result of more electricity usage in private residences. A model will be made to predict what the CO2 emissions would be for 2019-2020, based on electricity usage data from 2020-2021. Then, the real CO2 emissions from 2019-2020 will be compared with the model’s predicted values, and the difference will indicate if COVID-19 caused an inconsistency between actual and predicted CO2 emissions. Factors that were taken into account when making a model were independent variables relating to outdoor conditions, the number of people living in the house, and the temperature that the thermostat is set at, making the response variable CO2 emissions</p> Qiancheng Sun, Andrea Zela-Koort, Ava Stokes, Salahaldin Alshatshati Copyright (c) 2021 Journal of Energy & Technology (JET) [U.S. ISSN 2768-1025] Thu, 01 Jul 2021 00:00:00 +0000 Feasibility study and design of a grid-tied low-cost solar system to replace IPS for a residential building <p>In recent years, a densely populated country like Bangladesh has experienced severe electricity shortages. The use of the finite mineral resources to generate power is nearing its conclusion. So it's past time to switch to renewable energy sources like solar, hydro, biomass, wind, etc. Avoiding power outages in major cities is becoming more difficult. Generators and instantaneous power supplies (IPS) are commonly employed to combat this, however, they are unable to reduce the demand on mineral resources, as well as being inefficient and unreliable owing to significant fuel fluctuation. However, the country is located in a hotspot. Because of its long length of existence, sunlight may be employed as a stable supply of verse energy. Installing a rooftop solar photovoltaic (PV) system is simple. However, it must be concerned about the high expense of installation. The major goal of this project was to construct a cost-effective solar PV energy system for an urban building to address power shortages and to replace expensive IPS. This device will be linked to practically every component of our system, including modules, charge controllers, inverters, and so on. This device will determine how the inverter will operate, how the batteries will be charged, and which power source the loads will be linked to.</p> Md Emran Hossain, Saurav Biswas Copyright (c) 2021 Journal of Energy & Technology (JET) [U.S. ISSN 2768-1025] Thu, 29 Jul 2021 00:00:00 +0000 The Impact of COVID-19 on Energy Usage in the U.S. (A nationwide case study) <p>This report explores the effects of COVID-19 on household energy usage. Some of these effects are associated with the changes that happened after the COVID-19. The study also presents the different trends in the different households and what changed in the energy usage and if something is going wrong. The report will discuss the results and whether the energy usage decreased or increased or remained the same after COVID-19. The trials are from 35 households. It is collected from different cities in the United States and for different family sizes. The results of this study show the impacts of the COVID-19 in three different trends. The three different trends will be explained in detail and compared to before the pandemic.</p> Rawan Karam, Rasha Almshekhs, Salahaldin Alshatshati Copyright (c) 2021 Journal of Energy & Technology (JET) [U.S. ISSN 2768-1025] Fri, 04 Jun 2021 00:00:00 +0000 Integration Of Responsive Hybrid Loads Into An Electrical System With High Penetration Of Photovoltaic in Senegal <p>Pursuing the objective of improving the photovoltaic penetration rate in an electric mix dominated by thermal energy, the integration of the demand response is solicited to absorb the fluctuations and intermittencies induced by the energy from PV. In the work presented in this article hybrid loads (LPG and electrical) participate in the demand response, offering the advantage of targeting a household activity not yet taken into account in the load profile, but also avoiding the report and rebound effects often seen in Demand Side Management. It will be a question here of evaluating the capacity for these loads to absorb the energy surplus of origin PV whose quantity exceeds at certain time the demand coming from the conventional loads.</p> Ousmane CISSE, Mouhamadou Thiam, Mame Faty Mbaye, Mamadou Wade Copyright (c) 2021 Journal of Energy & Technology (JET) [U.S. ISSN 2768-1025] Fri, 04 Jun 2021 00:00:00 +0000 Analysis of Pre- & Intra-COVID-19 Pandemic U.S. Residential Sector Energy Consumption: A Novel Survey of American Household Usage During the Pandemic <p>The COVID-19 pandemic has fundamentally altered the way people around the world live, and although some impacts are yet to be realized, many changes have already occurred. Along with a climate crisis that is not going away any time soon, and an ever-increasing energy demand, the United States is about to endure consequences long thought to be for future generations. Given the lengthy and widespread stay-at-home orders, which forced residences to become makeshift schools and office spaces, the residential energy sector has certainly felt the impacts of the pandemic. Herein, we analyze pre- and intra-pandemic energy consumption in the residential sector in the United States. Students in a graduate-level engineering class at the University of Dayton were surveyed on their utility usage from 2019 through 2020 in an attempt to develop an understanding of how and where energy use changed over the period. Data collected included household city, state, occupancy, thermostat temperature setpoint, and electricity, gas, and water consumption for the household as presented on their utility bill. Data was analyzed on four categories – season, year, state, and number of occupants – to determine the influence of each of these factors on energy consumption. Overall electricity consumption increased 10% among the surveyed group, compared to a 2% increase in national consumption in the residential sector. While exact numerical findings were quite a bit higher than those nationally, the trend in increased consumption held true across all four categories studied. The findings of annual national energy consumption surveys are thereby reciprocated and enhanced by this limited, yet novel study.</p> Matthew Abele, Bridget Kallmeyer, Salahaldin F Alshatshati Copyright (c) 2021 Journal of Energy & Technology (JET) [U.S. ISSN 2768-1025] Fri, 04 Jun 2021 00:00:00 +0000