Hybrid Distributed Power Generation for Apartment Building Complexes in Korea

2012 ◽  
Author(s):  
Joowook Kim ◽  
Hyunwoo Lim ◽  
Moncef Krarti
Keyword(s):  
Fuel Cell ◽  
Fossil Fuels ◽  
Residential Buildings ◽  
Residential Building ◽  
Cost Effective ◽  
Sensitivity Analyses ◽  
Thermal Loads ◽  
Apartment Building ◽  
Apartment Complex ◽  
Cost Of Energy

Korea relies significantly on imported fossil fuels to meet its energy needs. Moreover, about 50% of Korean residential buildings are apartment complexes. In this paper, the use of distributed generation (DG) technologies to serve the energy requirements for a typical Korean apartment complex is explored to reduce Korea’s dependence on fossil fuel and CO2 emissions. In particular, a series of sensitivity analyses is conducted using detailed simulation tools to determine the cost-effectiveness of DG systems to meet electrical and thermal loads of an apartment building in Daegu, Korea. The DG systems considered in the analysis include Photovoltaic (PV), Wind turbine, Microturbine, and Fuel Cell. The apartment complex is connected to the utility grid that with electricity typically generated using fossil fuels. It is found that a combination of the grid and Fuel Cell is the most cost effective approach to meet the electrical and thermal loads of the complex residential building with a cost of energy reduction of 12% compared to the grid only option.

MODELING THE WEAR PROCESS OF BRICK BUILDINGS

2021 ◽  
Vol 14 (1) ◽  
pp. 44-50
Author(s):  
S. Nikolenko ◽  
Svetlana Sazonova ◽  
N. Akamsina
Keyword(s):  
Residential Buildings ◽  
Subsequent Development ◽  
Residential Building ◽  
Building Structures ◽  
Apartment Building ◽  
Wear Process ◽  
Physical Deterioration ◽  
Technical Examination

The main damages in brick structures of buildings are considered. The purpose of the work is to analyze the results of a technical examination of the building structures of a residential building, with the subsequent development of proposals for their restoration and strengthening. The object of the study is the brick structures of the house. The process of organizing a technical survey of brick residential buildings, which allows to determine the procedure for collecting and storing data, is considered. Modern solutions for the restoration of building structures are proposed. The physical deterioration of the apartment building was determined and recommendations were given for the elimination of brickwork defects.

Insulation and Energy-Saving Technology for the External Wall of Residential Building

2014 ◽  
Vol 1073-1076 ◽  
pp. 1263-1270 ◽  
Author(s):  
Feng Qian
Keyword(s):  
Energy Saving ◽  
Residential Buildings ◽  
Residential Building ◽  
Cost Effective ◽  
Sandwich Composite ◽  
Insulation System ◽  
External Wall ◽  
External Insulation ◽  
Comprehensive Comparison ◽  
Energy Saving Technology

The text elaborates on the significance and profile of insulation system for external wall of residential buildings in our country, makes comprehensive comparison among the external wall's self-insulation system, external wall's internal insulation system, sandwich composite insulation system and external wall's external insulation system, and reveals that the external wall's external insulation system has the advantage of strong feasibility, law cost, effective heat insulation break bridge and protective structure, which offers great potential for existing buildings in energy-saving rebuilding, thus finding a widest application and enjoying a promising market prospects.

scholarly journals The Grass is Greener: How Greenery Impacts the Perceptions of Urban Residential Property

2015 ◽  
Vol 1 (1) ◽  
pp. 22 ◽  
Author(s):  
Mykolas Simas Poškus ◽  
Diana Poškienė
Keyword(s):  
Residential Buildings ◽  
Perceived Value ◽  
Residential Building ◽  
Cost Effective ◽  
Green Spaces ◽  
Residential Property ◽  
Effective Solution ◽  
Convenience Sample ◽  
Different Types ◽  
Positive Effect

Can different types of greenery improve the perceived value, safety, prestige, coziness, and aesthetics of multistory residential buildings?<br />To find the answer, two studies were carried out. In Study 1, participants filled in questionnaires designed to measure the perceived value,<br />safety, prestige, coziness, and aesthetics of a building. Every questionnaire was accompanied with one of four images of the same residential building, the only difference between them was the type of greenery present near the building. Participants were asked to evaluate the building in the image by filling in the questionnaire. A convenience sample of 238 university students (mean age 20, SD = 2) participated in the experiment. Study 2 was an internet-based survey in which participants were presented with four images of a residential building and were asked to identify the most cozy, most expensive, most prestigious, most safe, and most aesthetic building. The pictures were the same as in Study 1. A snowball sample of 356 respondents (mean age 30, SD = 11) participated in the survey. The results indicate that buildings with sophisticated greenery and plain grass greenery are perceived most favorably, while unkempt and chaotic greenery were found to be associated with worse overall perceptions and decreased perceived value of residential property. When creating green spaces near residential buildings, we recommend considering plain grass greenery as it is the most cost-effective solution and has a positive effect on the perceptions of residential property and its value.

scholarly journals Thermochromic Paints on External Surfaces: Impact Assessment for a Residential Building through Thermal and Energy Simulation

Energies ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1912 ◽  
Author(s):  
Vasco Granadeiro ◽  
Margarida Almeida ◽  
Tiago Souto ◽  
Vítor Leal ◽  
João Machado ◽  
...  
Keyword(s):  
Energy Use ◽  
Energy Savings ◽  
Residential Buildings ◽  
Residential Building ◽  
Cost Effective ◽  
Physical Models ◽  
Indoor Temperature ◽  
Heating And Cooling ◽  
Step Transition ◽  
Linear Manner

This work addresses the effect of using thermochromic paints in residential buildings. Two different thermochromic paint types were considered: One that changes properties through a step transition at a certain temperature, and another that changes properties in a gradual/linear manner throughout a temperature range. The studied building was a two-floor villa, virtually simulated through a digital model with and without thermal insulation, and considering thermochromic paints applied both on external walls and on the roof. The performance assessment was done through the energy use for heating and cooling (in conditioned mode), as well as in terms of the indoor temperature (in free-floating mode). Three different cities/climates were considered: Porto, Madrid, and Abu Dhabi. Results showed that energy savings up to 50.6% could be reached if the building is operated in conditioned mode. Conversely, when operated in free-floating mode, optimally selected thermochromic paints enable reductions up to 11.0 °C, during summertime, and an increase up to 2.7 °C, during wintertime. These results point out the great benefits of using optimally selected thermochromic paints for obtaining thermal comfort, and also the need to further develop stable and cost-effective thermochromic pigments for outdoor applications, as well as to test physical models in a real environment.

Green Retrofit Energy Efficiency Potential on Existing Building Envelope for Residential and Non-Residential Building

2021 ◽  
pp. 1227-1257
Author(s):  
Robert Staiger
Keyword(s):  
Energy Efficiency ◽  
Energy Demand ◽  
Fossil Fuels ◽  
Residential Buildings ◽  
Ecological Impact ◽  
Residential Building ◽  
Building Envelope ◽  
Existing Building ◽  
Primary Energy Demand ◽  
Energy Efficiency Potential

The chapter deals with the green energetic consideration of today's building envelopes for residential and non-residential buildings. It investigates the energetic effects the envelopes have on energy efficiency, energy consumption, material use, sustainable use of resources, lifetime considerations, economic and ecological impact. Today's it is estimated that approximately 30% of the annual primary energy demand for residential and non-residential buildings is needed. Energy resources for heat, electricity, air conditioning and cooling purposes, fossil fuels in form of gas and liquid are predominantly used.

scholarly journals INTEGRATED EVALUATION OF EXTERNAL WALL INSULATION IN RESIDENTIAL BUILDINGS USING SWARA-TODIM MCDM METHOD

2014 ◽  
Vol 20 (1) ◽  
pp. 103-110 ◽  
Author(s):  
Audrius Ruzgys ◽  
Robertas Volvačiovas ◽  
Česlovas Ignatavičius ◽  
Zenonas Turskis
Keyword(s):  
Thermal Insulation ◽  
Residential Buildings ◽  
Great Part ◽  
Residential Building ◽  
Payback Period ◽  
Apartment Building ◽  
External Wall ◽  
Water Vapour Diffusion ◽  
Price Duration ◽  
Mcdm Method

A great part of energy produced in Europe is consumed by old residential buildings. Consequently, it is necessary to retrofit energetically non-efficient buildings. However, there is a mass financial gap between cost effective retrofitting and upgrading to nearly zero energy building levels. The efficiency of apartment building modernization under current requirements applicable in Lithuania and the requirements for 2020 was analysed, focusing on thermal insulation of external walls. Six cases of residential building modernization in Lithuania were studied estimating criteria that are among the most important for implementation of apartment building modernization, such as the total cost of the external wall modernization, simple payback period, work duration, and other parameters related to the characteristics of thermal insulation systems. The weights of the criteria were calculated after an expert survey and using integrated SWARA-TODIM multi-criteria decision-making (MCDM) method the best alternatives were ranked. After analyzing the differences between the current situation and upcoming requirements for rendered and ventilated type of façades, it can be stated that the final result depends more on price, duration of works, payback period, energy losses and water vapour diffusion than on the type of façade or insulation requirements applied at present or future.

Performance of Hybrid Renewable Energy Power System for A Residential Building

2021 ◽  
pp. 1-42
Author(s):  
Mohammad Qandil ◽  
Ahmad Abbas ◽  
Saif Al Hamad ◽  
Walaa Saadeh ◽  
Ryoichi S. Amano
Keyword(s):  
Renewable Energy ◽  
Fossil Fuels ◽  
Average Energy ◽  
Residential Building ◽  
The United States ◽  
Diesel Generator ◽  
Electrical Grid ◽  
Cost Of Energy ◽  
Average Energy Consumption ◽  
The U.S

Abstract Using fossil fuels as the primary way to generate electricity causes a significant effect on the environment. In 2019 more than 64% of the electricity in the United States of America was generated using fossil fuels resources, while renewable energy (RE) resources contributed to only 17% of the U.S. electricity generation for the same year. Due to the complex terrain distribution of many states in the U.S., a massive opportunity of utilizing RE resources in rural and remote areas can reduce the cost of electrical grid installation for such areas. In this study, a typical residential building with an average energy consumption of 30.25 kWh/day with a peak of 5.34 kW was considered a case study in each state to optimize a hybrid RE system and find the best alternative electrical grid system. This study presents the best configuration between Solar and Wind energy with different types of energy storage. It was found that the photovoltaic (PV) - diesel generator with battery best serves in all states. The daily radiation and diesel prices substantially affect the Levelized Cost of Energy (COE) values in each state.

Green Retrofit Energy Efficiency Potential on Existing Building Envelope for Residential and Non-Residential Building

2021 ◽  
pp. 243-273
Author(s):  
Robert Staiger
Keyword(s):  
Energy Efficiency ◽  
Energy Demand ◽  
Fossil Fuels ◽  
Residential Buildings ◽  
Ecological Impact ◽  
Residential Building ◽  
Building Envelope ◽  
Existing Building ◽  
Primary Energy Demand ◽  
Energy Efficiency Potential

The chapter deals with the green energetic consideration of today's building envelopes for residential and non-residential buildings. It investigates the energetic effects the envelopes have on energy efficiency, energy consumption, material use, sustainable use of resources, lifetime considerations, economic and ecological impact. Today's it is estimated that approximately 30% of the annual primary energy demand for residential and non-residential buildings is needed. Energy resources for heat, electricity, air conditioning and cooling purposes, fossil fuels in form of gas and liquid are predominantly used.

Green Retrofit Energy Efficiency Potential on Existing Building Envelope for Residential and Non-Residential Building

2019 ◽  
pp. 219-249
Author(s):  
Robert Staiger
Keyword(s):  
Energy Efficiency ◽  
Energy Demand ◽  
Fossil Fuels ◽  
Residential Buildings ◽  
Ecological Impact ◽  
Residential Building ◽  
Building Envelope ◽  
Existing Building ◽  
Primary Energy Demand ◽  
Energy Efficiency Potential

The chapter deals with the green energetic consideration of today's building envelopes for residential and non-residential buildings. It investigates the energetic effects the envelopes have on energy efficiency, energy consumption, material use, sustainable use of resources, lifetime considerations, economic and ecological impact. Today's it is estimated that approximately 30% of the annual primary energy demand for residential and non-residential buildings is needed. Energy resources for heat, electricity, air conditioning and cooling purposes, fossil fuels in form of gas and liquid are predominantly used.

scholarly journals Exploring the regional-scale potential of the use of wood products in non-residential buildings: A building permits-based quantitative approach

BioResources ◽  
2019 ◽  
Vol 15 (1) ◽  
pp. 787-813
Keyword(s):  
Building Material ◽  
Residential Buildings ◽  
Regional Scale ◽  
Flow Analysis ◽  
Residential Building ◽  
Wood Products ◽  
Sensitivity Analyses ◽  
Building Structures ◽  
Material Consumption ◽  
Building Permits

In the construction sector, wood products are gaining interest. Methods are necessary to quantify material use and evaluate their potential effects. When quantifying the building material consumption, many studies are limited to residential buildings due to the lack of data for non-residential buildings. This research aimed at investigating a methodology to account for non-residential building material consumption. A method to estimate the volume of wood products in the structures of the new non-residential buildings was presented. Then, projections of the estimation were suggested according to three scenarios (minimum, average, and maximum). Sensitivity analyses highlighted the parameters that present the greatest contribution to the scenarios. The relative importance of the estimation to the total harvesting of all wood markets was also assessed. Despite the high uncertainty in wood consumption for non-residential building structures, the estimation had a small weight on the total harvesting of the Quebec province. The results showed how and when the resource availability could be constrained depending on the assumptions. This method can serve for life cycle inventory for an environmental assessment or wood flow analysis, but more research on the material composition of the non-residential building archetypes is necessary.

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