Economic Analysis of Energy Saving Measures in Current Prefabricated Panel Buildings

2016 ◽  
Vol 861 ◽  
pp. 457-465
Author(s):  
Jan Pašek ◽  
Diana Tvrzníková
Keyword(s):  
Energy Consumption ◽  
Service Life ◽  
Economic Analysis ◽  
Lower Energy ◽  
Residential Buildings ◽  
Energy Demands ◽  
Operational Costs ◽  
Significant Difference ◽  
Investment Returns ◽  
Technical Measures

The paper focuses on analysis and assessment of economic effectivity of measures taken in order to lower energy demands of prefabricated panel residential buildings. For this purpose, a group of buildings with previously made modifications with potential to lower the energy and heating consumption were selected. Next, the development of their energy consumption and their costs was monitored. The assessment of achieved figures was made with regards to amount of costs which were paid for these measures and also with regards to their service life, amount of gained subsidy and decrease of consumed energies and operational costs of the buildings after the measures were taken. It was found that there had been a significant difference in investment returns for constituent technical measures. For some of them, it is not even realistic to expect reaching the return of investments during their service life period.

scholarly journals LIFECYCLE ENERGY CONSUMPTION PREDICTION OF RESIDENTIAL BUILDINGS BY INCORPORATING LONGITUDINAL UNCERTAINTIES

2014 ◽  
Vol 19 (Supplement_1) ◽  
pp. S161-S171 ◽  
Author(s):  
Endong Wang ◽  
Zhigang Shen
Keyword(s):  
Energy Consumption ◽  
Service Life ◽  
Deterministic Model ◽  
Residential Buildings ◽  
Energy State ◽  
Temperature State ◽  
Longitudinal Variations ◽  
Energy Consumption Prediction ◽  
Building Condition ◽  
Consumption Prediction

Accurate prediction of buildings’ lifecycle energy consumption is a critical part in lifecycle assessment of residential buildings. Longitudinal variations in building conditions, weather conditions and building's service life can cause significant deviation of the prediction from the real lifecycle energy consumption. The objective is to improve the accuracy of lifecycle energy consumption prediction by properly modelling the longitudinal variations in residential energy consumption model using Markov chain based stochastic approach. A stochastic Markov model considering longitudinal uncertainties in building condition, degree days, and service life is developed: 1) Building's service life is estimated through Markov deterioration curve derived from actual building condition data; 2) Neural Network is used to project periodic energy consumption distribution for each joint energy state of building condition and temperature state; 3) Lifecycle energy consumption is aggregated based on Markov process and the state probability. A case study on predicting lifecycle energy consumption of a residential building is presented using the proposed model and the result is compared to that of a traditional deterministic model and three years’ measured annual energy consumptions. It shows that the former model generates much narrower distribution than the latter model when compared to the measured data, which indicates improved result.

scholarly journals Bridging the energy gap of India’s residential buildings by using rooftop solar PV systems for higher energy stars

Clean Energy ◽  
2021 ◽  
Vol 5 (3) ◽  
pp. 423-432
Author(s):  
Rakesh Dalal ◽  
Kamal Bansal ◽  
Sapan Thapar
Keyword(s):  
Energy Consumption ◽  
Economic Analysis ◽  
Residential Buildings ◽  
Electricity Consumption ◽  
Energy Performance ◽  
Solar Pv ◽  
Existing Buildings ◽  
Pv Systems ◽  
Rooftop Solar

Abstract The residential-building sector in India consumes >25% of the total electricity and is the third-largest consumer of electricity; consumption increased by 26% between 2014 and 2017. India has introduced a star-labelling programme for residential buildings that is applicable for all single- and multiple-dwelling units in the country for residential purposes. The Energy Performance Index (EPI) of a building (annual energy consumption in kilowatt-hours per square metre of the building) is taken as an indicator for awarding the star label for residential buildings. For gauging the EPI status of existing buildings, the electricity consumption of residential buildings (in kWh/m2/year) is established through a case study of the residential society. Two years of electricity bills are collected for an Indian residential society located in Palam, Delhi, analysed and benchmarked with the Indian residential star-labelling programme. A wide EPI gap is observed for existing buildings for five-star energy labels. Based on existing electricity tariffs, the energy consumption of residential consumers and the Bureau of Energy Efficiency (BEE)’s proposed building ENERGY STAR labelling, a grid-integrated rooftop solar photovoltaic (PV) system is considered for achieving a higher star label. This research study establishes the potential of grid-connected rooftop solar PV systems for residential buildings in Indian cities through a case study of Delhi. Techno-economic analysis of a grid-integrated 3-kWp rooftop solar PV plant is analysed by using RETScreen software. The study establishes that an additional two stars can be achieved by existing buildings by using a grid-integrated rooftop solar PV plant. Payback for retrofit of a 3-kWp rooftop solar PV plant for Indian cites varies from 3 to 7 years. A case study in Delhi, India establishes the potential of grid-connected rooftop solar PV systems for residential buildings. Techno-economic analysis of grid integrated, 3 kWp rooftop solar systems estimates a payback period from 3 to 7 years.

Development of Energy-Saving Measures for the Multi-Story Apartment Buildings

2015 ◽  
Vol 725-726 ◽  
pp. 1408-1416 ◽  
Author(s):  
Nikolay Vatin ◽  
Darya Nemova ◽  
Yulia Ibraeva ◽  
Philipp Tarasevskii
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Structural Analysis ◽  
Residential Buildings ◽  
Residential Building ◽  
Economic Feasibility ◽  
Apartment Buildings ◽  
Consumption Energy ◽  
Energy Audits ◽  
Technical Measures

The paper presents a structural analysis of the energy consumption of multi-story residential building, obtained based on analysis of the actual data flow and heat consumption, energy audits and data for assessing the state of the energy efficiency of residential buildings. The paper suggests techniques for improving energy efficiency. With the settlement proposed in the article shows the need and economic feasibility of the implementation of organizational and technical measures to improve the energy efficiency of residential buildings.

Economic analysis of upgrading aging residential buildings in China based on dynamic energy consumption and energy price in a market economy

Energy Policy ◽  
2011 ◽  
Vol 39 (9) ◽  
pp. 4902-4910 ◽  
Author(s):  
Jinlong Ouyang ◽  
Meijun Lu ◽  
Bing Li ◽  
Chunyuan Wang ◽  
Kazunori Hokao
Keyword(s):  
Energy Consumption ◽  
Economic Analysis ◽  
Market Economy ◽  
Residential Buildings ◽  
Energy Price

scholarly journals ANALYSIS OF ENERGY DEMANDS OF HOCKEY PLAYERS ON THE STAGES OF THE ANNUAL CYCLE

2018 ◽  
pp. 14-18
Author(s):  
А.V. Chernykh ◽  
S.V. Sedochenko ◽  
M.S. Orlov
Keyword(s):  
Heart Rate ◽  
Energy Consumption ◽  
Annual Cycle ◽  
Physical Exertion ◽  
Food Ration ◽  
Heart Rate Monitors ◽  
Method Of Calculation ◽  
Energy Demands ◽  
Significant Difference ◽  
Hockey Players

The object of this study was the energy demands of athletes in different periods of the annual cycle. The aim of the study was to determine the daily energy consumption of athletes (on the example of the hockey team), taking into account individual activity in different periods of the annual cycle, with the ultimate goal to identify the failure of averaged calculations carried out previously for athletes. In the article the technique of calculation energy expenses athletes using the clock readings of heart rate monitors. This technique is quite easy to use and in combination with the traditional method of calculation allows to simplify and specify the calculation of energy consumption at each stage of the annual training mesocycle. As a result of the survey, the main activities of the subjects with timing in each specific period of year cycle were identified, as well as hockey players provided data of their watches-heart rate monitors, at times of physical exertion of a certain intensity. In the study, we have used somatometry (measurement of height and weight), the obtained results were processed by methods of mathematical statistics. Further, according to the formulas, the values of the daily basic exchange and the value of the basic exchange per hour were determined. On the basis of calculations and data provided, the values of energy expenditure of hockey players in each stage of the annual cycle were calculated. The analysis of the obtained data revealed a significant difference in the readings of energy consumption in the competitive, training and recovery periods, which confirms the failure of the averaged calculations conducted earlier. This technique allows to individualize the calculations of this kind, and the accounting of the results, in turn, will create the possibility of adequate replenishment of energy consumption with the help of food ration.

Energy Consumption Pattern of Residential Buildings: Case Study of Residential Area in Batu Pahat, Johor

2020 ◽  
Vol 12 (9) ◽  
Author(s):  
Junaidah Jailani ◽  
◽  
Norsyalifa Mohamad ◽  
Muhammad Amirul Omar ◽  
Hauashdh Ali ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Residential Buildings ◽  
Residential Area ◽  
Consumption Pattern ◽  
Air Conditioners ◽  
Residential Sector ◽  
Waste Energy ◽  
Main Factor ◽  
Energy Consumption Pattern

According to the National Energy Balance report released by the Energy Commission of Malaysia in 2016, the residential sector uses 21.6% of the total energy in Malaysia. Residents waste energy through inefficient energy consumption and a lack of awareness. Building occupants are considered the main factor that influences energy consumption in buildings, and to change energy consumption on an overall scale, it is crucial to change individual behaviour. Therefore, this study focused on analysing the energy consumption pattern and the behaviour of consumers towards energy consumption in their homes in the residential area of Batu Pahat, Johor. A self-administrated questionnaire approach was employed in this study. The findings of this study showed that the excessive use of air conditioners was a significant factor in the increasing electricity bills of homeowners as well as the inefficient use of electrical appliances. Also, this study determined the effect of awareness on consumer behaviour. This study recommends ways to help minimise energy consumption in the residential area.

Reply to the ‘Comment on “Techno-economic analysis of capacitive and intercalative water deionization”’ by S. K. Patel, L. Wang and M. Elimelech, Energy Environ. Sci., 2021, 10.1039/D0EE03321A

2021 ◽  
Author(s):  
Michael Metzger ◽  
Münir Besli ◽  
Saravanan Kuppan ◽  
Sondra Hellstrom ◽  
Soo Kim ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Economic Analysis ◽  
Separation Conditions ◽  
Energy Environ

This reply provides updated energy consumption estimates at clearly defined separation conditions for electrochemical desalination concepts.

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