scholarly journals Adopting combination of passive design strategies to optimize building energy needs

2021 ◽  
Vol 1197 (1) ◽  
pp. 012064
Author(s):  
Kolla Navya ◽  
Ashwin Raut ◽  
Sravan Chilukuri ◽  
N Sugandha Rathan
Keyword(s):  
Energy Consumption ◽  
Cellulose Fiber ◽  
Economic Benefits ◽  
Mineral Wool ◽  
Building Envelope ◽  
Expanded Polystyrene ◽  
Design Strategies ◽  
Monthly Basis ◽  
Carbon Footprints ◽  
Operational Life

Abstract The paper’s main goal is to analyze the efficiency of roof and wall systems based on varying insulating material layers in the tropical climatic region of Vijayawada, Andhra Pradesh, India. This research is carried out on “e-QUEST” software for energy analysis which is determined on monthly basis and the results gave evidence about energy consumption of building envelope and its operational life cycle costing. The wall and roof system have been studied for computation of the operating energy requirements and its subsequent carbon footprints which comes under concept of sustainability of building. The materials identified for insulating roof are vacuum insulated panels, wool glass, phenolic foam, expanded polystyrene, polystyrene, and for wall are cellulose, fiber glass, mineral wool, polystyrene, aero gel. Due to both have insulation of wall and roof systems the passage a source of heat minimized because of which the cooling demand is reduced on building and ultimately leads to lowering of energy consumption. Hence this study is crucial to understand the resident indoor air comfort, environmental and long-term economic benefits.

Seeking Feasible Low-Carbon Residential Design Strategies According to the Energy Consuming Sources of the Residential Construction

2011 ◽  
Vol 99-100 ◽  
pp. 624-627
Author(s):  
Chao Ying Liu
Keyword(s):  
Energy Consumption ◽  
Building Envelope ◽  
Space Heating ◽  
Residential Construction ◽  
Low Carbon ◽  
Design Strategies ◽  
Residential Design ◽  
Heating And Cooling ◽  
Energy Consuming ◽  
Domestic Energy

According to Xuanmei Yang and other scholars’ study, space heating and cooling together with water heating consist the majority of domestic energy consumption. This article analyzes the seven aspects of domestic energy consumption by heating or cooling. From the building envelope technology and low-carbon technology aspects, it provides numbers of feasible strategies to attain low-carbon residential design adapting to the energy consuming sources of the residential construction.

scholarly journals Retrofitting a Building’s Envelope: Sustainability Performance of ETICS with ICB or EPS

2019 ◽  
Vol 9 (7) ◽  
pp. 1285 ◽  
Author(s):  
José D. Silvestre ◽  
André M. P. Castelo ◽  
José J. B. C. Silva ◽  
Jorge M. C. L. de Brito ◽  
Manuel D. Pinheiro
Keyword(s):  
Life Cycle ◽  
Energy Consumption ◽  
Thermal Insulation ◽  
Carbon Footprint ◽  
Energy Performance ◽  
Building Envelope ◽  
Expanded Polystyrene ◽  
Insulation Material ◽  
Economic Dimension ◽  
Heating And Cooling

This paper analyses the environmental, energy, and economic performances of the External Thermal Insulation Composite System (ETICS) using agglomerated insulation cork board (ICB) or expanded polystyrene (EPS) as insulation material applied in the energetic renovation of the building envelope during a 50-year study period. A comparison between ETICS using ICB and EPS, for the same time horizon, is also presented. The environmental balance is based on “Cradle to Cradle” (C2C) Life Cycle Assessment (LCA), focusing on the carbon footprint and consumption of nonrenewable primary energy (PE-NRe). The characteristics of these products in terms of thermal insulation, the increased energy performance provided by their installation for retrofit of the buildings’ envelope, and the resulting energy savings are considered in the energy balance. The estimation of the C2C carbon and PE-NRe saved is considered in the final balance between the energy and environmental performances. ETICS with ICB is environmentally advantageous both in terms of carbon footprint and of PE-NRe. In fact, the production stage of ICB is less polluting, while EPS requires lower energy consumption to fulfil the heating and cooling needs of a flat, due to its lower U-Value, and its lower acquisition cost results in a lower C2C cost. Comparing both ETICS’ alternatives with reference solutions, it was found that the latter only perform better in the economic dimension, and only for an energy consumption to fulfil less than 25% of the heating and cooling needs. This paper represents an advance to the current state-of-the-art by including all the life-cycle stages and dimensions of the LCA in the analysis of solutions for energy renovation of building envelopes.

IMPACT OF RETROFITTING ENERGY-EFFICIENT DESIGN STRATEGIES ON ENERGY USE OF EXISTING COMMERCIAL BUILDINGS: COMPARATIVE STUDY OF LOW-IMPACT AND DEEP RETROFIT STRATEGIES

2017 ◽  
Vol 12 (4) ◽  
pp. 70-88 ◽  
Author(s):  
Ajla Aksamija
Keyword(s):  
Energy Consumption ◽  
Energy Efficient ◽  
Hvac Systems ◽  
Building Envelope ◽  
Energy Modeling ◽  
Office Buildings ◽  
Existing Buildings ◽  
Design Strategies ◽  
Energy Usage ◽  
Building Systems

This article discusses energy-efficient retrofitting design strategies for commercial office buildings, and examines their effect on energy consumption. The objective of the research was to study how to integrate passive design strategies and energy-efficient building systems to improve building performance, and reduce the energy consumption of existing buildings in three different climate types (cold, mixed and hot climates). First, properties of existing buildings were analyzed based on national CBECS database to determine typical characteristics of office buildings located in Chicago, Baltimore and Phoenix, including size, building envelope treatment and building systems. Then, fourteen different prototypes were developed, varying the building shape and orientation to represent different building stock, and energy modeling was conducted to establish energy usage baseline. Multiple design considerations were investigated based on extensive energy simulations and modeling, where low-impact and deep retrofits were considered. Low-impact strategies included improvements to the building envelope, lighting systems and optimization of HVAC systems operation (without upgrading heating and cooling equipment). Deep energy retrofits also included improvements to building envelope and lighting, and considered changes and improvements to HVAC systems (specifically, integration of radiant systems). Energy modeling was conducted for all prototypes, and results were obtained for the baseline (current energy usage), and energy usage considering low-impact design strategies and deep retrofits. A total of 126 energy models was developed, simulated and analyzed, providing a dataset that captured energy usage for investigated scenarios. The comparative analysis of simulation results was used to determine how specific techniques lead to energy savings in different climate types, as well as for buildings of various shapes and orientations.

scholarly journals Thermal Conductivity and Specific Heat Capacity of Insulation materials at Different Mean Temperatures

2021 ◽  
Vol 2069 (1) ◽  
pp. 012090
Author(s):  
Y Yousefi ◽  
F Tariku
Keyword(s):  
Thermal Conductivity ◽  
Heat Capacity ◽  
Regression Model ◽  
Specific Heat ◽  
Specific Heat Capacity ◽  
Correlation Coefficients ◽  
Cellulose Fiber ◽  
Mineral Wool ◽  
Expanded Polystyrene ◽  
Insulation Materials

Abstract Thermal conductivity and heat capacity are among the most essential properties of a building insulation in calculating thermal performance which are subjected to change when exposed to temperatures variation in service. Ignoring the temperature dependency of these material properties can result in under and over estimations of buildings energy uses and the corresponding equipment sizing. To obtain more realistic conductivity values of insulation materials, in this paper, thermal conductivity tests are conducted at various mean temperatures. For the study six commonly used insulations including Cellulose fiber, Expanded Polystyrene, Extruded Polystyrene, Open Cell Spray Polyurethane, Polyisocyanurate, and Mineral Wool are considered, and their thermal conductivity are measured at seven mean temperatures ranging from 5°C to 60°C. Furthermore, their specific heat capacity are measured at nine mean temperatures ranging between 16°C and 36°C. The results showed that except Polyisocyanurate board, the thermal conductivities and specific heat capacities of all insulation materials increased linearly with rising temperature, presenting a linear regression model with correlation coefficients (R2) values between 0.96 and 0.98. The curve fitting of the Polyisocyanurate thermal conductivity measurements resulted a nonlinear regression model with R2 of 0.97. The thermal conductivity of six insulations as a function of temperature have been established.

scholarly journals Environmental Footprint of Cementitious Adhesives—Components of ETICS

2020 ◽  
Vol 12 (21) ◽  
pp. 8998
Author(s):  
Sebastian Czernik ◽  
Marta Marcinek ◽  
Bartosz Michałowski ◽  
Michał Piasecki ◽  
Justyna Tomaszewska ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Environmental Impact ◽  
Primary Energy ◽  
Mineral Wool ◽  
Expanded Polystyrene ◽  
Environmental Indicators ◽  
Current Standard ◽  
Heating And Cooling ◽  
Correct Determination ◽  
The Impact

Energy saving is one of the strategic challenges facing our civilization today. Without decisive actions to reduce energy consumption, it is impossible to maintain the current standard of living. Energy consumption for heating and cooling purposes is one of the primary energy consumption sources in many countries. The external thermal insulation composite system (ETICS), which is today the most widely used solution in EU countries, increases buildings’ energy efficiency. This article investigates the impact of producing cementitious adhesives, as part of ETICS with expanded polystyrene (EPS) or mineral wool (MW), on the natural environment using the cradle-to-gate life cycle assessment (LCA) method. Cementitious adhesives have a relatively low impact on most of the environmental indicators analyzed in the paper concerning other ETICS components. The paper aims to raise awareness of the importance of the environmental impact related to the production of cementitious adhesives. Knowledge of the construction products’ environmental impact is fundamental for creating reliable databases, based on which, in the future, their environmental requirements will be determined. The environmental performance of building elements is essential for the correct determination of the buildings’ sustainability.

scholarly journals Towards Net-Zero Energy in Hot-Dry Regions: Building Envelope Design Strategies for Single-Family Homes

2018 ◽  
Vol 11 (3) ◽  
pp. 45 ◽  
Author(s):  
Ahmed A. Alyahya ◽  
Nawari O. Nawari
Keyword(s):  
Energy Consumption ◽  
Building Envelope ◽  
Warning Signs ◽  
Single Family ◽  
Design Strategies ◽  
Zero Energy ◽  
Net Zero Energy ◽  
Net Zero ◽  
High Efficient ◽  
Design Proposal

Global climate change is serving as warning signs it gradually begins to capture the attention of people at large. Many actions have been and continue to be taken by governments and organizations to preserve the planet, which is impactful and needed. But conservation efforts are not exclusive to governments and large institutions- individuals can contribute in multiple ways that will have ripple effects, one being the choice to build sustainable, net-zero energy homes. Building a house that is a net-zero energy requires many strategies.One of the most compelling factors in reducing the home energy consumption, to then achieve a net-zero energy home especially in hot-dry regions, is the optimization of the building envelope performance. This paper discussed several building envelope design strategies that are suitable for homes in hot-dry regions and tested them.The Methods including analyzing case study from Qater by using computer and were analyzed using Building Information Modeling (BIM) tools for energy simulation programs. All those strategies were applied to a design proposal for a house in Riyadh, Saudi Arabia, which is a hot-dry region. Further, the same simulation analyses were projected onto an identical house to the design proposal, but with a traditional, low-efficient building envelope.The results showed that the house with the high-efficient building envelope had 48% less energy consumption than the one that has the low-efficiency envelope.This research demonstrated the efficacy of the building envelope to reduce the energy consumption of single-family homes in hot-dry regions. The study outlines vital strategies for a high-efficient building envelope design in hot-dry areas that reaching net-zero energy homes and thus help to offset the negative impact of climate changes in arid areas.

scholarly journals Survey on the Indoor Thermal Environment and Passive Design of Rural Residential Houses in the HSCW Zone of China

2019 ◽  
Vol 11 (22) ◽  
pp. 6471 ◽  
Author(s):  
Rui ◽  
Zhang ◽  
Shi ◽  
Pan ◽  
Chen ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Room Temperature ◽  
Phase Change Materials ◽  
Thermal Environment ◽  
High Energy ◽  
Building Envelope ◽  
Current Status ◽  
Design Strategies ◽  
Indoor Thermal Environment ◽  
Passive Design

Despite their high energy consumption, rural residential houses in the hot summer and cold winter (HSCW) zone still have a generally poor indoor thermal environment. The objective of this study was to understand the current status of the indoor thermal environment for rural residential houses in the HSCW zone and analyze its cause in order to develop some strategies for improvement through passive design of the building envelope. Face-to-face questionnaires and interviews, air-tightness testing, and temperature and humidity monitoring were conducted to understand the building envelope, energy consumption, and indoor thermal environment. Then, some passive design strategies were simulated, including the application of functional interior materials such as hygroscopic and phase change materials. An overall passive design for the building envelope can increase the room temperature by 3.6 °C, reduce the indoor relative humidity by 12% in the winter, and reduce the room temperature by 4.4 °C in the summer. In addition, the annual energy-saving rate can reach ~35%.

Low-cost retrofit packages for residential buildings in hot-humid Lagos, Nigeria

2019 ◽  
Vol 37 (3) ◽  
pp. 250-272 ◽  
Author(s):  
Nwakaego Chikaodinaka Onyenokporo ◽  
Ekele Thompson Ochedi
Keyword(s):  
Energy Consumption ◽  
Thermal Comfort ◽  
Low Income ◽  
Residential Buildings ◽  
Relevant Literature ◽  
Building Envelope ◽  
Design Strategies ◽  
Content Type ◽  
Passive Design ◽  
Reducing Energy

Purpose The purpose of this paper is to develop a set of affordable retrofit packages that can be applied to existing residential buildings in hot-humid regions to improve occupants’ thermal comfort and reduce energy consumption. Design/methodology/approach A critical review of relevant literature to identify passive design strategies for improving thermal comfort and reducing energy consumption in hot-humid climates with focus on the building envelope was conducted in addition to a simulation study of an existing building typology in study area. Findings There is enormous potential to reduce energy costs and improve thermal comfort through building retrofit packages which is a recent concept in developing countries, such as Nigeria. Analysing the results of the retrofit interventions using building energy simulation helped in developing affordable retrofit packages which had optimum effect in improving indoor comfort temperature to the neutral temperature specified for hot humid Nigeria and further down to 3°C less than that of the reference building used. The use of passive design strategies to retrofit the building might help homeowners reduce their annual energy consumption by up to 46.3 per cent just by improving the indoor thermal comfort. Originality/value In addition to improving thermal comfort and reducing energy consumption, this research identified affordable retrofit packages and considered its cost implications especially to low-income earners who form a larger population of Lagos, Nigeria, as this was not considered by many previous researchers.

scholarly journals THE APPLICATION OF PASSIVE DESIGN STRATEGIES AS SUSTAINABLE OPERATION AND MAINTENANCE IN A MODEL CONFERENCE CENTRES (A CASE STUDY OF AMINU KANO CENTRE FOR DEMOCRATIC RESEARCH AND TRAINING (AKCDR&T))

2021 ◽  
pp. 23-39
Author(s):  
Alfa Sharif ◽  
Muhammad Mukarram ◽  
Isyaku Rabi’u ◽  
Rabi’u Inusa
Keyword(s):  
Energy Consumption ◽  
Natural Ventilation ◽  
Relevant Information ◽  
Building Envelope ◽  
Comfort Level ◽  
Design Parameters ◽  
Design Strategies ◽  
Passive Design ◽  
Conference Centre

ABSTRACT: This research sought to reduce uncomfortable conditions created by extremes of heat and dryness in order to achieve well balanced indoor and outdoor climate, through the application of passive design strategies in Conference Centre located in hot dry climate of Kano Nigeria. Passive design utilizes natural sources of heating and cooling breezes. It is achieved by appropriately orientating the building on its site and carefully designing the building envelope (roof, walls, windows and floor). External features such as fountain, soft landscaping and proper site planning improves micro climate which in turn helped in achieving good passive design. The methodology employed is case study and relevant information sourced from pertinent literature and the internet was taken into consideration. Research has shown that more than40% of energy consumption in any building is used for cooling and lighting in order to achieve comfort level. In the course of the research, the building was studied to evaluate the use of passive elements that relates to passive lighting and cooling which are the main source of energy consumption such as building envelop, natural lighting, natural ventilation, Site and external spaces, building form, building orientation, wall/window shading and existing of energy source on conference centre building. Research has shown that, the design parameters obtained from field survey are the principal factors responsible for any good passive design of most public building such as conference centre building.

Economic Potentials of Energy-Efficient Residential Building Envelope Retrofitting in Turkey

2019 ◽  
pp. 728-755
Author(s):  
M. Mustafa Erdoğdu ◽  
Coşkun Karaca ◽  
Ali Kurultay
Keyword(s):  
Energy Consumption ◽  
Thermal Resistance ◽  
Energy Efficient ◽  
Building Materials ◽  
Energy Savings ◽  
Residential Buildings ◽  
Residential Building ◽  
Economic Benefits ◽  
Building Envelope ◽  
Heat Transfers

The amount of energy consumption in the residential buildings has a very significant share with nearly 30 percent in the total amount of energy consumption. Therefore, residential sector is identified in this chapter as being one of the areas with a large potential for energy savings. Inefficient dwelling construction and design methods are widely used in Turkey and only about five percent of residential buildings are insulated. Concerning the importance and immediate need in Turkey for energy-efficient residential building retrofitting, this chapter identifies economic benefits of such retrofitting by particularly focusing on heat transfers by conductivity, where the rate can be determined by surface size, thermal resistance of the building materials and their thickness.

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