scholarly journals Предизвикателства при проектиране, изграждане и експлоатация на пасивна сграда в България

2020 ◽  
pp. 61-76
Keyword(s):  
Energy Efficient ◽  
Air Conditioning ◽  
Methodological Framework ◽  
Construction Sector ◽  
Passive House ◽  
Know How ◽  
Building Systems ◽  
Efficient Construction ◽  
House Standard ◽  
Design Construction

Challenges to the Design, Construction and Exploitation of a Passive Building in Bulgaria The construction of buildings that have to achieve the idea of a sustainable and energy-efficient construction sector requires a study of passive buildings. Specific requirements for the design, construction and exploitation of a passive building leading to limited flexibility in terms of heating, ventilation and air-conditioning, renewable energy, modern know-how, the introduction of highly efficient building systems, the lack of experience of Bulgarian producers present the relevance of the topic and justify a more detailed study. The aim of the article is to analyze the challenges in the design, construction and exploitation of the passive building in Bulgaria and on this basis draw generalized conclusions and make recommendations for improving the implementation of projects according to the Passive House Standard. The content of the article is structured as follows: 1) Literature review of technological features in the design, construction and exploitation of a Passive House; 2) Methodological framework of the study; 3) Assessment of the challenges in the design, construction and exploitation of a passive building in Bulgaria; 4) Summary of the results and recommendations. The last part of the article summarizes and recommends the challenges of implementing this type of projects related to the characteristics of the construction’s technologies and conditions for exploitations.

scholarly journals Problems of energy-efficient construction in the Republic of Kazakhstan and the development of a methodology for determining the energy efficiency of buildings and structures

2020 ◽  
Vol 77 (4) ◽  
pp. 189-199
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
Air Conditioning ◽  
Hot Water ◽  
Construction Sector ◽  
Progressive Development ◽  
Efficient Construction ◽  
New Construction ◽  
The Republic ◽  
Housing Facilities

The progressive development of the economy of the Republic of Kazakhstan is impossible without solving the issues of increasing energy efficiency and energy conservation. These issues are very relevant in the construction sector of Kazakhstan. Housing facilities, on average, consume 2-3 times more heat per square meter, than buildings in Europe. However, in Kazakhstan until now there is no methodology for determining the energy efficiency of buildings and structures that meets modern requirements. The methodology discussed in this article is harmonized with EU requirements and establishes a method for calculating the annual energy consumption of buildings for heating, hot water, ventilation and air conditioning, taking into account auxiliary energy for the operation of these systems, and is intended for use in the design of new construction, reconstruction (modernization) residential and public buildings, as well as operated buildings and structures.

The potential for the passive house standard in longyearbyen – The high arctic

2021 ◽  
pp. 014362442199698
Author(s):  
Josien AJC Buijze ◽  
Andrew J Wright
Keyword(s):  
Boundary Conditions ◽  
Energy Efficient ◽  
Building Design ◽  
High Arctic ◽  
Performance Criteria ◽  
Design Parameters ◽  
Passive House ◽  
Energy Efficient Building ◽  
Individual Design ◽  
House Standard

Passive building design reduces a building’s energy consumption through mainly non-mechanical design strategies. The Passive House (or Passivhaus) Standard certifies such buildings that comply with its strict energy performance criteria. Achieving the Standard is very challenging for dwellings in extreme climates. There is limited knowledge of the Standard’s potential in Arctic regions, particularly the High Arctic. Through a review of the literature and energy modelling of a hypothetical dwelling, the challenges in achieving the Standard in Longyearbyen (78°N), Norway are investigated. Very low temperatures and 112 days without daylight create a high heating demand. Whereas previous studies measured actual building performances or used simple calculations, the findings in this investigation show the limitations of individual design parameters and technical limits of the building envelope. In theory the Standard can be achieved in Longyearbyen; however, the potential in practice is low due to the very tight margins in the heating criteria. The results show the significant impact of applying contextual (climatic) adjustments to the boundary conditions of the Standard. The investigation could contribute to a discussion on modifying the Passive House Standard for dwellings in the High Arctic and improving building design for the region. Practical application: Current knowledge regarding energy efficient building performance in Arctic climates is limited, while the urgency for improved efficiencies is extremely high. The modelling in this work shows the valuable impact of contextual adjustments to the Passive House boundary conditions; the impact of individual design parameters; and the potential for significant energy savings through adopting passive house principles for dwelling design in Longyearbyen or similar climates. This investigation could encourage new policy making, additional research and the development of an optimized Passive House Standard that considers High Arctic climate conditions, thus encouraging new energy efficient building construction in cold climates.

scholarly journals Achievements and challenges of contemporary energy-efficient architecture in Russia

2019 ◽  
Vol 91 ◽  
pp. 05025 ◽  
Author(s):  
Fedor Perov ◽  
Aleksandra Eremeeva ◽  
Salavat Shabiev
Keyword(s):  
Energy Efficient ◽  
Environmental Design ◽  
Consumer Attitude ◽  
Positive Trend ◽  
Construction Sector ◽  
Green Architecture ◽  
Energy Technologies ◽  
Initial Stage ◽  
Efficient Construction ◽  
Energy Efficient Architecture

The growth in demand for the clean habitation environment and the need for the sustainable energy technologies lead to the development of eco-friendly architecture in the world. Eco-friendly design is beginning to play an important role in the design and construction of civil buildings. The article focuses on topical issues of energy-efficient architecture and environmental design in Russia. Statistics show that the energy-efficient construction sector in Russia is developing at a relatively slow rate, and “green architecture” buildings are not wide spread, eco-friendly architecture in Russia is only on the initial stage of the growth. However, the demand for ecological buildings has a positive trend. The article indicates the main reasons impeding the growth of “green architecture” in Russia: state policy and legislation; consumer attitude; or those linked to specific environmental economic prerequisites. The lack of eco-friendly education among the population and, accordingly, the lack of knowledge of Green architecture benefits are also perceived as a problem by the authors. The authors make recommendations to stimulate the development of “green” architecture in Russia and improve the positions of the country on this issue in the global ranking.

Analysis of Air Conditioning Energy Saving Measures

2013 ◽  
Vol 671-674 ◽  
pp. 2526-2529
Author(s):  
Si Qi Li ◽  
Rui Li
Keyword(s):  
Energy Saving ◽  
Energy Efficient ◽  
Air Conditioning ◽  
Air Conditioning System ◽  
Construction Operation ◽  
Operation And Management ◽  
Design Construction

This paper analyzes the significance of air conditioning energy efficient, and analysis from the three aspects of the design, construction, operation and management of the air conditioning system to achieve energy saving measures.

scholarly journals Advantages of a passive house and technical requirements in the construction of an energy-saving house

2021 ◽  
pp. 14-20
Author(s):  
I.V. Donenko ◽  
О.М. Nazarenko ◽  
A.O. Trotsenko
Keyword(s):  
Energy Efficiency ◽  
Thermal Insulation ◽  
Energy Efficient ◽  
Thermal Protection ◽  
Cost Comparison ◽  
Performance Ratio ◽  
Passive House ◽  
Technical Requirements ◽  
Efficient Construction ◽  
Design And Construction

Formulation of the problem. The tariff policy in our state determines the conduct of research, innovative developments in the field of energy efficient construction. The highest degree of energy efficiency is realized in the concept of "passive house". The advantages of a passive house and a cost comparison with a conventional cottage open up the concept of passive construction with a rational price-performance ratio in design and construction. The purpose of the article is the necessary study of reinforced thermal insulation for the functioning of a passive house − the most important requirement. Heat loss is a critical component of the energy balance and should not be neglected. Results. A comparative analysis of external structures was carried out to determine the standard characteristics of a passive house. Thermal calculations of walls and roofs were performed to check thermal protection. The findings showed that thermal insulation is an important aspect in the design and construction of a passive house, the structures must meet high thermal resistance requirements. An important factor is the continuity of the thermal insulation layer to achieve the tightness of the house. Just a 20 % increase in the cost of building a passive house compared to a cottage provides many benefits and savings in the future. Scientific novelty and practical significance. After reviewing the German experience and considering the issue of energy conservation in Ukraine, we can conclude that such construction should gain momentum and be popular in our country. With the help of the analysis and the collected data, it is possible to clearly show that energy-efficient solutions should be implemented in every construction, to solve an urgent issue and for the further development and implementation of effective architectural solutions. Keywords: passive house; energy efficient construction; thermomodernization; experience; energy efficiency; thermal insulation

scholarly journals Assessment Methodology for Efficiency, CO2-Emissions and Primary Energy Consumption for Refrigeration Technologies in the Industry

2018 ◽  
Vol 882 ◽  
pp. 215-220
Author(s):  
Matthias Koppmann ◽  
Raphael Lechner ◽  
Tom Goßner ◽  
Markus Brautsch
Keyword(s):  
Energy Consumption ◽  
Energy Efficient ◽  
Air Conditioning ◽  
Primary Energy ◽  
Primary Energy Consumption ◽  
Assessment Methodology ◽  
Alternative Technologies ◽  
Overall Efficiency ◽  
Chp System ◽  
The Individual

Process cooling and air conditioning are becoming increasingly important in the industry. Refrigeration is still mostly accomplished with compression chillers, although alternative technologies are available on the market that can be more efficient for specific applications. Within the scope of the project “EffiCool” a technology toolbox is currently being developed, which is intended to assist industrials users in selecting energy efficient and eco-friendly cooling solutions. In order to assess different refrigeration options a consistent methodology was developed. The refrigeration technologies are assessed regarding their efficiency, CO2-emissions and primary energy consumption. For CCHP systems an exergetic allocation method was implemented. Two scenarios with A) a compression chiller and B) an absorption chiller coupled to a natural gas CHP system were calculated exemplarily, showing a greater overall efficiency for the CCHP system, although the individual COP of the chiller is considerably lower.

scholarly journals Optimal ways to develop ecological and energy-efficient construction

2021 ◽  
Vol 1083 (1) ◽  
pp. 012051
Author(s):  
S V Ovchinnikova ◽  
A Yu Kalinichenko ◽  
A A Lyamina ◽  
E M Schneider
Keyword(s):  
Energy Efficient ◽  
Efficient Construction
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