scholarly journals FEATURES OF THE ORGANIZATION OF THERMOMODERNIZATION PROJECTS

2020 ◽  
pp. 159-165
Author(s):  
Artem Maksymov ◽  
Oleksandr Halinskyi
Keyword(s):  
Cost Savings ◽  
Technical Condition ◽  
Energy Audit ◽  
Technical Data ◽  
Improve Energy Efficiency ◽  
Organization And Management ◽  
Technological Impact ◽  
Integrated Project ◽  
Number Of Publications ◽  
Construction Works

Organizational bases for the preparation and implementation of thermal modernization projects are defined by separate legislative acts and regulations, but they do not take into account certain features. Despite the sufficient number of publications on the solution of certain issues related to the thermal modernization of existing and new facilities, further research is needed in the organization and management of the processes of thermal modernization of existing facilities. As we have defined in previous publications, thermal modernization can be carried out during various types of construction - reconstruction, overhaul, technical re-equipment, but in contrast to these types of construction can be carried out without relocation of residents or suspension of operation of other facilities. time of construction works or its parts (provided they are autonomous). One of the first stages of thermal modernization is the inspection of the technical condition of the object, which determines the list of measures necessary to restore its normal serviceability. Significant costs for these measures may lead to the rejection of the idea of thermal modernization or the involvement of other than cost savings for energy consumption of the facility. The current regulations provide for the inspection of the building before or during the energy audit, but does not explicitly state that the development of thermal modernization measures should take into account the measures developed at the stage of technical inspection, as they have a constructive and technological impact. combined into a single integrated project. The article presents the procedure for organizing the preparation of the thermal modernization project is presented. The organization of preparation of projects to improve energy efficiency should primarily ensure the reliability of calculations of environmental and economic efficiency of the project, depending on the reliability of technical data and calculations collected and identified at different stages of its preparation depending on systematization and their consistent collection.

scholarly journals Problems and disadvantages of the existing evaluation system of thermomodernization projects of construction objects

2021 ◽  
Vol 1 (47) ◽  
pp. 119-128
Author(s):  
І.V. Vahovich ◽  
A.S. Maximov ◽  
І.О. Ostapenko ◽  
D.V. Bogatyuk ◽  
D.P. Kalashnikov
Keyword(s):  
Energy Efficiency ◽  
Evaluation System ◽  
Construction Projects ◽  
Residential Buildings ◽  
Technical Condition ◽  
Topical Issue ◽  
Energy Audit ◽  
Design Work ◽  
Improve Energy Efficiency ◽  
Technical And Economic Indicators

The article considers the topical issue of thermal modernization of residential buildings and social facilities is an important area of research, but in the implementation of such projects there are many obstacles of organizational and administrative nature, which currently hinder the implementation of projects to improve energy efficiency of buildings and structures. and the systematization of which will allow to develop measures to eliminate existing barriers, and thus improve the attractiveness and accessibility of thermal modernization projects for the population and other stakeholders. The main stages of thermal modernization are systematized in accordance with the provisions of the current legislative and regulatory framework, the place of thermal modernization measures in the sequence of implementation of investment and construction projects is determined. It is determined that the main types of construction in which thermal modernization is carried out are capital repairs, reconstruction and technical re-equipment, but thermal modernization measures can be carried out during the current repair. Current repairs are not a type of construction, and therefore it is not subject to laws and regulations in the field of construction, and therefore the organization and implementation of such works from the standpoint of the requirements of legislation and regulations is the simplest. The following obstacles and barriers were identified during the development of the thermal modernization project, namely: the order of performance of the technical condition survey and energy audit is not legally established (in practice these are two unrelated actions, the result of which are not related technical reports analyzed by the designer. design), the stages of thermal modernization are not linked to a single methodology, given in separate documents, and therefore require special professional knowledge, not sufficiently reflected stages of preparation of thermal modernization at the stage of pre-design work, while at this stage decisions must be made , providing the required level of energy efficiency for the customer, technical and economic indicators of the project.

scholarly journals Analysis of repair works to remove the effects of structural failure after a gas explosion

2019 ◽  
Vol 284 ◽  
pp. 02002
Author(s):  
Aleksandra Bąk ◽  
Ryszard Chmielewski
Keyword(s):  
Residential Buildings ◽  
Residential Building ◽  
Technical Condition ◽  
Structural Elements ◽  
Structural Failure ◽  
Gas Explosion ◽  
Gas Explosions ◽  
Construction Supervision ◽  
Bearing Structure ◽  
Construction Works

The article presents the issues of repair works in a multi-family residential building, whose structural and non – structural elements have been damaged and destroyed by a gas explosion and the fire. Gas explosions in residential buildings constitute a small percentage of the total number of building disasters, however, due to the relatively large number of injured people, these incidents are very dangerous [1]. Moreover, the gas explosion often leads to significant material losses and fatalities. Proper assessment of the load-bearing structure after such incident requires an extensive knowledge of the behaviour of structures. The first authority, that issues a decision regarding further use is Construction Supervision Inspector. Until the demolition of the object is ordered, the next step is to provide expert report made by an authorized construction expert, whose aim is to assess the technical condition of the elements of the structure and to determine the scope of necessary repair works. Construction expert, who give such opinion during the assessment of objects immediately after such incident, often has limited access to structural elements, moreover these elements often are covered. Hence, the recommendations contained in these reports often do not include all of required construction works.

scholarly journals A STUDY OF ENERGY FLOW AT AN ELECTRICAL SUBSTATION THROUGH ENERGY AUDIT

2017 ◽  
Vol 5 (4RACEEE) ◽  
pp. 161-165
Author(s):  
Darshan D.A. ◽  
Sumith L.V. ◽  
K. Sowjanya Reddy ◽  
K. Rasagnya ◽  
Trupti V. N.
Keyword(s):  
Energy Conservation ◽  
Energy Flow ◽  
Electrical Power ◽  
Reducing Power ◽  
Cost Savings ◽  
Resource Depletion ◽  
Electrical Network ◽  
Management Technique ◽  
Energy Audit ◽  
Energy Auditing

This paper deals with the study of energy flow in a 220/ 66 kV substation. This study emphasizes on energy conservation by reducing power losses. Saving energy is the primary and overwhelming motivating factor for making energy improvements. Energy conservation can increase the environmental quality and higher the savings. Energy conservation lowers the energy costs by preventing future resource depletion (renewable energy source). Utilizing the electric power in the proper manner without wastage is the most important thing to consider. The main objectives are accumulating data at various energy points, identifying energy losses and critical junctions, enabling energy conservation and cost savings. Planning the use of electrical power in the most judicious way such that the usage as well as its wastage is minimized. For this purpose a energy management technique called energy audit is adopted. Energy auditing is required to determine the energy flows through various electrical installations such as feeders, transformers, substations in an electrical network system.

Increase the Energy Efficiency of the Multi-Story Apartment Building

2015 ◽  
Vol 725-726 ◽  
pp. 1395-1401 ◽  
Author(s):  
Nikolay Vatin ◽  
Darya Nemova ◽  
Yulia Ibraeva ◽  
Philipp Tarasevskii
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Residential Building ◽  
Heating System ◽  
Economic Feasibility ◽  
Energy Audit ◽  
Apartment Building ◽  
Improve Energy Efficiency ◽  
Consumption Data ◽  
Technical Measures

The article presents a structural analysis of the energy consumption of multi-story residential building, which based on analysis of the actual data flow and heat consumption data and energy audit for assessing the condition of the heating system. Methods been proposed to improve energy efficiency. The calculation shows the need and economic feasibility of the implementation of organizational and technical measures proposed in the article.

scholarly journals Application of Artificial Neural Networks to the Technical Condition Assessment of Water Supply Systems

2017 ◽  
Vol 24 (1) ◽  
pp. 31-40 ◽  
Author(s):  
Kamil Kamiński ◽  
Władysław Kamiński ◽  
Tomasz Mizerski
Keyword(s):  
Water Supply ◽  
Distribution System ◽  
Water Distribution ◽  
Technical Condition ◽  
Water Supply Systems ◽  
Data Set ◽  
Technical Data ◽  
Artificial Neural ◽  
Artificial Neural Network Ann ◽  
Supply Systems

AbstractThe paper explains a method for discerning the parts of a water supply system in need of renovation. The results are based on technical data collected over the last twenty one years, concerning more than two hundred sections of both renovated and nonrenovated pipelines. In the study, an appropriately prepared data set was used for training an artificial neural network (ANN) in the form of a multilayer perceptron (MLP). Further comparison between the responses of the trained MLP and the decisions made by human experts showed satisfactory consistency, although 15% of the database records produced certain discrepancies. The presented method can help create an expert system capable of supporting failure-free operation of a water distribution system.

scholarly journals Analyzing Two Federal Building-Integrated Photovoltaics Projects Using ENERGY-10 Simulations

2003 ◽  
Vol 125 (1) ◽  
pp. 28-33 ◽  
Author(s):  
Andy Walker ◽  
Doug Balcomb ◽  
Gregory Kiss ◽  
Norm Weaver ◽  
Melinda Humphry Becker
Keyword(s):  
Energy Efficiency ◽  
Peak Load ◽  
Cost Savings ◽  
Environmental Research ◽  
Integrated Analysis ◽  
Building Projects ◽  
Improve Energy Efficiency ◽  
Building Integrated Photovoltaics ◽  
Pv Systems ◽  
Wide Range

A new version of the ENERGY-10 computer program simulates the performance of photovoltaic (PV) systems and evaluates a wide range of opportunities to improve energy efficiency in buildings. This paper describes two test cases in which the beta release of ENERGY-10 version 1.4 was used to evaluate energy efficiency and building-integrated photovoltaics (BIPV) for two federal building projects: an office and laboratory building at the Smithsonian Astrophysical Laboratory (SAO) in Hilo, Hawaii, and housing for visiting scientists at the Smithsonian Environmental Research Center in Edgewater, Maryland. The capabilities of the software, the design assistance provided by ENERGY-10, and a synopsis of results are given. Estimates of annual energy delivery by the five PV arrays of the SAO are compared to F-Chart to help inform a validation of ENERGY-10. Results indicate that, by simulating both the building electrical load and simultaneous PV performance for each hour of the year, ENERGY-10 facilitates a highly accurate, integrated analysis useful early in the design process. The simulation is especially useful in calculating the effect of PV on the building peak load, and associated demand cost savings.

scholarly journals Tasks and Problems in the Buildings Demolition Works: A Case Study

2015 ◽  
Vol 61 (4) ◽  
pp. 3-18 ◽  
Author(s):  
A. Sobotka ◽  
A. Radziejowska ◽  
J. Czaja
Keyword(s):  
Construction Projects ◽  
Technical Condition ◽  
The Other ◽  
Construction Work ◽  
Preparatory Phase ◽  
Construction Law ◽  
Implementation Problems ◽  
Building Demolition ◽  
Construction Works

In Poland, it often happens that construction objects are subject to demolition work for different reasons. Demolition, according the Construction Law, is defined as a type of construction works and, as such, represents a particular type of construction project. As in other construction projects, a very important phase, in addition to execution of the works, is to prepare, design and plan demolition works. Some demolition activities are covered by appropriate regulations and can be described as typical. On the other hand the technical side of demolition works depends on many factors such as: the type of building, its age, technical condition, type of construction, etc. This article covers the analysis of the stages and tasks in the preparatory phase of the building demolition. This work will also present a description of the tasks carried out during the demolition works based on the example of a historic tenement house located in Krakow. This analysis aims to identify implementation problems and sources of risk that may occur during this type of construction work.

scholarly journals Using Industry 4.0 Concept – Digital Twin – to Improve the Efficiency of Leather Cutting in Automotive Industry

2019 ◽  
Vol 23 (2) ◽  
pp. 01 ◽  
Author(s):  
Miroslava Horváthová ◽  
Roman Lacko ◽  
Zuzana Hajduová
Keyword(s):  
Industry 4.0 ◽  
Large Scale ◽  
Material Selection ◽  
Cost Savings ◽  
Future Research ◽  
Scale Production ◽  
Data Set ◽  
Digital Twin ◽  
Business Entities ◽  
Number Of Publications

<p><strong>Purpose:</strong> The aim of this study is to propose alternatives of increasing the efficiency of material selection and processing in the selected company and reduce costs and leather sustainability as a result.</p><p><strong>Methodology/Approach:</strong> In this case study, an automotive company processing a natural leather material that enters the process of a large-scale production was explored. For this purpose, the internal documents of the firm selected including its internal database and know-how of its employees were used. The ways of improving the efficiency of the material processing were proposed and tested in a digital environment. In the proposed solutions, Industry 4.0 principles were implemented.</p><p><strong>Findings:</strong> By the use of Digital twin and other Industry 4.0 principles and solutions in the process of material selection and processing in the company selected, the increased efficiency and cost savings were achieved.</p><p><strong>Research Limitation/implication:</strong> The solutions proposed in this paper were based on exploration of the chosen data set of the selected company. For the future research, testing of the given proposals in other companies should be conducted.</p><strong>Originality/Value of paper:</strong> Although there is an increasing number of publications describing the concept Industry 4.0, the research providing evidence of its benefits for business entities is still scarce. This paper offers such a research in the enterprise selected.

scholarly journals Repair strategy for housing stock engineering systems to improve energy efficiency

2021 ◽  
Vol 244 ◽  
pp. 05023
Author(s):  
Ekaterina Plyusnina ◽  
Vera Akristiniy
Keyword(s):  
Housing Stock ◽  
Technical Condition ◽  
Engineering System ◽  
Engineering Systems ◽  
Current Interest ◽  
Improve Energy Efficiency ◽  
Repair Strategy ◽  
Imple Mentation ◽  
Optimal Quantity ◽  
Standard Service

The article discusses problems of current interest concerning the housing and utility sector associated with increasing the level of comfort of living by constantly improving measures for carrying out planned and un-scheduled repairs and surveys. This work provides a methodology for justi-fying the choice of a repair strategy for engineering systems of water sup-ply and sewerage in the process of operating the housing stock, the imple-mentation of which will contribute to the timely and rational repairs and inspections of buildings engineering systems. This will allow systematical-ly eliminating engineering systems malfunctions, predicting and planning the optimal quantity and chronology of repair and restoration activities by maintaining the technical condition of the engineering system elements within the permissible limits during the standard service life.The main goal of the research in the presented material is to substantiate the methodology for choosing a repair strategy for water supply and sewerage systems dur-ing the operation of apartment buildings.The optimal periodicity for the re-pair of engineering systems depends on the failure rate of elements and the costs associated with the execution of all operational activities.Three op-tions considered for organizing repairs of engineering equipment.Applied in actual practice the technique of choosing the repair strategy of engineer-ing systems for selecting the optimal option to organize repairs of engi-neering equipment.

scholarly journals Determination of state of electrical equipment by spectra of wattmetrograms

2021 ◽  
Vol 288 ◽  
pp. 01042
Author(s):  
Valeriy Manakhov ◽  
Alexey Tsvetkov
Keyword(s):  
Rapid Development ◽  
Digital Processing ◽  
Electrical Equipment ◽  
Production Equipment ◽  
Diagnostics And Control ◽  
Ability To Work ◽  
Technical Data ◽  
Improve Energy Efficiency ◽  
And Control

The purpose of the work is to develop a method of diagnostics and control of oil production equipment to improve energy efficiency and optimize operation modes, through the use of a wattmeter program and its spectrum. The method of diagnostics according to the wattmetrogram is based on obtaining the active power spent by the electric motor for one period of rocking of the rocker. Analysis of the spectrum of wattmetrograms makes it possible to more accurately diagnose defects of this equipment. Thus, control over the spectra of the wattmetrogram is a more accurate and promising method of diagnosing equipment. Materials and methods: In the development of this issue, both domestic and foreign literature was used. The technical data of the control stations and sensors were used on the basis of actual electrical equipment. The prospects and benefits of using diagnostic options weltmetropole: relatively small number of sensors (current and voltage transformers); ability to measure the electric power consumed by the drive; ability to integrate with automated systems of technical and commercial electricity metering; the task is relevant already today, but it is quite promising in the future, due to the rapid development of technologies that allow for digital processing of wattmetrograms; use of these technologies in practice; economic advantages over similar representatives of this segment; service life of more than 20 years; ability to work in a wide temperature range -40 — +60.

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