CFD Investigation of the Effect of Building Passive Design Strategy on Energy Efficiency and Wind Comfort in Extreme Weather Conditions in Astana, Kazakhstan

There is a distinct lack of building design literature specific to the Central Asian region. This perhaps, could be one of reasons for the only slight improvement of new building designs and construction. One does observe the highly glazed buildings are a particularly popular feature here in Astana, as like anywhere else in the world. However, excessively glazed surfaces combined with the weather extremes leads to adverse internal conditions and skyrocketing energy bills. The work presented in this paper is a part of continuing efforts to identify analyze and promote the design of ‘low energy, green and sustainable buildings with special reference to the Kazakhstan locality. In the present context, low energy buildings’ refers to buildings inherently low energy consuming by careful passive design, utilizing intelligent building technologies to automate building services and minimize wastage of energy and by incorporation of renewable technologies for its energy supply. Demonstration of improved environmental conditions and impact on energy savings will be outlined through a cause study incorporating application of passive design approach and detailed computational fluid dynamics (CFD) analysis for an existing building complex. The results indicated that there is a considerable influence of passive design and orientation on energy efficiency, wind comfort and safety.

Download Full-text

Analysis of Energy and Internal Environment Improvements in a Single Family House

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.899.3 ◽

2014 ◽

Vol 899 ◽

pp. 3-6 ◽

Cited By ~ 2

Author(s):

Martin Kamenský ◽

Anna Vaskova ◽

Marián Vertaľ

Keyword(s):

Energy Efficiency ◽

Energy Savings ◽

Building Design ◽

Low Energy ◽

Internal Environment ◽

Single Family ◽

Cooling Period ◽

Heating And Cooling ◽

Family House

The next step in energy efficiency building design focus on near energy zero buildings. To design such buildings is important to understand how people use low energy building and to find reserves in energy. The paper presents an analysis of reserves in a family house. The analysis is done with simulations of different design and operation solutions based on knowledge from in situ measurements. Results show there are reserves in the heating and cooling period of year, which can lead to further energy savings of up to 15% and internal environment improvements.

Download Full-text

A Tool for Optimal Refurbishment Design of Low-Energy Buildings

Journal of Physics Conference Series ◽

10.1088/1742-6596/2042/1/012164 ◽

2021 ◽

Vol 2042 (1) ◽

pp. 012164

Author(s):

I Salerno ◽

M F Anjos ◽

K McKinnon ◽

E S Mazzucchelli

Keyword(s):

Mathematical Optimization ◽

Building Design ◽

Payback Period ◽

Low Energy ◽

Thermal Mass ◽

Core Component ◽

Passive House ◽

Existing Building ◽

Low Energy Buildings ◽

Study Case

Abstract We propose a model that aims to fulfill the following three necessities: the demand for refurbishing the existing built environment, the lack of a reliable means to help architects navigate among the numerous possible solutions for low-energy constructions, and the need for a multi-function tool to analyze buildings as complex systems. We introduce the Optimal Refurbishment Design (ORD) model that is a novel tool to help architects with the refurbishment of an existing building or the design of a new one. The ORD shows four innovative aspects. First, it opens the way to passive building design while focusing on affordable solutions. Second, its core component is based on mathematical optimization. Third, it simultaneously outputs optimal thermal mass and insulation of all the required elements in the building. Fourth, it automatically accounts for the user’s needs and local regulations. Unlike most of the approaches in the Literature, the ORD’s outputs are not limited by any pre-defined set of materials or strategies. We tested the ORD using a realistic study case of refurbishment, and found that the renovated house achieved the energy consumption of a Passive House by lowering its annual heating/cooling consumption by 23% with a payback period of less than 5 years.

Download Full-text

Passivhaus

Encyclopedia ◽

10.3390/encyclopedia1010005 ◽

2020 ◽

Vol 1 (1) ◽

pp. 20-29

Author(s):

Alejandro Moreno-Rangel

Keyword(s):

Building Design ◽

Design Principles ◽

Low Energy ◽

Design Criteria ◽

Basic Design ◽

Passive House ◽

Low Energy Buildings

Passivhaus or Passive House buildings are low-energy buildings in which the design is driven by quality and comfort, hence achieving acceptable levels of comfort through post-heating or post-cooling of fresh air. Additionally, Passivhaus building design follows the Passivhaus design criteria, as described in the Passive House Planning Package (PHPP). This article aims to introduce the Passivhaus background, development, and basic design principles. Finally, it also presents a brief description of the performance of Passivhaus buildings.

Download Full-text

Dynamic Daylight Metrics for Electricity Savings in Offices: Window Size and Climate Smart Lighting Management

Energies ◽

10.3390/en11113143 ◽

2018 ◽

Vol 11 (11) ◽

pp. 3143 ◽

Cited By ~ 6

Author(s):

Ignacio Acosta ◽

Miguel Ángel Campano ◽

Samuel Domínguez-Amarillo ◽

Carmen Muñoz

Keyword(s):

Energy Efficiency ◽

Net Present Value ◽

Energy Savings ◽

Performance Metrics ◽

Control Strategies ◽

Window Size ◽

Weather Conditions ◽

Worst Case ◽

Daylight Performance ◽

Dynamic Metrics

Daylight performance metrics provide a promising approach for the design and optimization of lighting strategies in buildings and their management. Smart controls for electric lighting can reduce power consumption and promote visual comfort using different control strategies, based on affordable technologies and low building impact. The aim of this research is to assess the energy efficiency of these smart controls by means of dynamic daylight performance metrics, to determine suitable solutions based on the geometry of the architecture and the weather conditions. The analysis considers different room dimensions, with variable window size and two mean surface reflectance values. DaySim 3.1 lighting software provides the simulations for the study, determining the necessary quantification of dynamic metrics to evaluate the usefulness of the proposed smart controls and their impact on energy efficiency. The validation of dynamic metrics is carried out by monitoring a mesh of illuminance-meters in test cells throughout one year. The results showed that, for most rooms more than 3.00 m deep, smart controls achieve worthwhile energy savings and a low payback period, regardless of weather conditions and for worst-case situations. It is also concluded that dimming systems provide a higher net present value and allow the use of smaller window size than other control solutions.

Download Full-text

How Cognitive Biases Affect Energy Savings in Low Energy Buildings

SSRN Electronic Journal ◽

10.2139/ssrn.3114262 ◽

2018 ◽

Cited By ~ 2

Author(s):

Lucie Martin-Bonnel de Longchamp ◽

Nicolas Lampach ◽

Ludovic Parisot

Keyword(s):

Energy Savings ◽

Cognitive Biases ◽

Low Energy ◽

Low Energy Buildings

Download Full-text

Passive design optimization of low energy buildings in different climates

Energy ◽

10.1016/j.energy.2018.09.019 ◽

2018 ◽

Vol 165 ◽

pp. 591-613 ◽

Cited By ~ 35

Author(s):

Fatima Harkouss ◽

Farouk Fardoun ◽

Pascal Henry Biwole

Keyword(s):

Design Optimization ◽

Low Energy ◽

Passive Design ◽

Low Energy Buildings ◽

Different Climates

Download Full-text

Low Energy Building Designs for Extreme Weather Conditions in Central Asia

Volume 10: Emerging Technologies and Topics; Public Policy ◽

10.1115/imece2012-93084 ◽

2012 ◽

Cited By ~ 1

Author(s):

Serik Tokbolat ◽

Raikhan Tokpatayeva ◽

Sarim Naji Al-Zubaidy

Keyword(s):

Carbon Emissions ◽

Weather Conditions ◽

Building Design ◽

Extreme Weather ◽

Low Energy ◽

Design Strategies ◽

Increase Energy Efficiency ◽

Energy Technologies ◽

End Use ◽

Building Designs

Buildings account for nearly 40% of the end-use energy consumption and carbon emissions globally. These buildings, once built, are bound to be utilized for several decades if not longer. The building sector therefore holds a significant responsibility for implementing strategies to increase energy efficiency and reduce carbon emissions and thus contribute to global efforts directed toward mitigating the adverse effects of climate change. This paper presents an oversight of effective low-energy building design strategies for the extreme weather conditions in Kazakhstan (Astana), with temperature ranging between −35 and +40 C. Passive design features coupled with integration of renewable energy technologies have been identified for the next generation of buildings in Astana. The specific nature of the work is intentional, it is a continuing attempt to generate relevant know how that has direct relevancy to Astana’s system approach to energy conversation to meet its extreme winters.

Download Full-text

The Strategies of Passive Energy-Efficiency Design in Low Energy Building

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.368-370.1318 ◽

2013 ◽

Vol 368-370 ◽

pp. 1318-1321

Author(s):

Xin Bin Wang ◽

Jia Ping Liu ◽

Yu Fu

Keyword(s):

Energy Efficiency ◽

Energy Consumption ◽

Energy Conservation ◽

Air Conditioning ◽

Influence Factors ◽

Building Design ◽

Building Energy ◽

Low Energy ◽

Paper Briefly ◽

Low Energy Consumption

This paper briefly analyzes the structure and conservation approaches of building energy consumption, analyzes the forming reason and influence factors of heating and air-conditioning energy consumption and proposes the passive energy conservation designing strategies of low energy consumption building. Through the passive methods of building design, envelop enclosure and planning landscape, the goal of last year building low energy conservation can be achieved.

Download Full-text

Thermal Bridges Minimizing through Typical Details in Low Energy Designing

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.899.62 ◽

2014 ◽

Vol 899 ◽

pp. 62-65 ◽

Cited By ~ 4

Author(s):

Rastislav Ingeli ◽

Boris Vavrovič ◽

Miroslav Čekon

Keyword(s):

Energy Efficiency ◽

Thermal Insulation ◽

Energy Demand ◽

Building Energy ◽

Building Envelope ◽

Low Energy ◽

Building Energy Efficiency ◽

Low Energy Buildings ◽

Thermal Bridges ◽

The Impact

Energy demand reduction in buildings is an important measure to achieve climate change mitigation. It is essential to minimize heat losses in designing phase in accordance of building energy efficiency. For building energy efficiency in a mild climate zone, a large part of the heating demand is caused by transmission losses through the building envelope. Building envelopes with high thermal resistance are typical for low-energy buildings in general. In this sense thermal bridges impact increases by using of greater thickness of thermal insulation. This paper is focused on thermal bridges minimizing through typical system details in buildings. The impact of thermal bridges was studied by comparative calculations for a case study of building with different amounts of thermal insulation. The calculated results represent a percentage distribution of heat loss through typical building components in correlation of various thicknesses of their thermal insulations.

Download Full-text