scholarly journals The Economic Feasibility of Passive Houses in Korea

2018 ◽  
Vol 10 (10) ◽  
pp. 3558 ◽  
Author(s):  
Jisoo Shim ◽  
Doosam Song ◽  
Joowook Kim
Keyword(s):  
Life Cycle ◽  
Energy Saving ◽  
Life Cycle Cost ◽  
Building Energy ◽  
Economic Feasibility ◽  
Cycle Period ◽  
Single Family ◽  
Passive House ◽  
Building Market ◽  
Passive Houses

The number of passive houses and zero-energy buildings being developed is increasing, as measures to reduce the rapidly increasing building energy consumption. While government building policies focus on energy savings, investors and the building market emphasize the initial investment cost. These conflicting perspectives obstruct the development of passive houses in the building market. In this study, a series of building energy analyses, including the effect of energy saving measures and economic information considering long-term economic benefit and incentives policy, will be presented. Analyses were performed on the energy-saving measures needed to improve the performance of single-family houses in Korea to that of the passive house standard, as well as the energy saving effect and increased cost. The application of energy saving measures for passive house implementation resulted in an additional cost of 1.85%–4.20% compared to the conventional reference house. In addition, the proposed passive house alternative shows a short payback period and life cycle cost (LCC) result, compared to a conventional building’s life cycle period. The possibility of passive house implementation is high, and developing the passive house is affordable for the investor or end user in Korea.

scholarly journals BIM-VE-Based Optimization of Green Building Envelope from the Perspective of both Energy Saving and Life Cycle Cost

2020 ◽  
Vol 12 (19) ◽  
pp. 7862
Author(s):  
Zhenmin Yuan ◽  
Jianliang Zhou ◽  
Yaning Qiao ◽  
Yadi Zhang ◽  
Dandan Liu ◽  
...  
Keyword(s):  
Life Cycle ◽  
Energy Saving ◽  
Life Cycle Cost ◽  
Architectural Design ◽  
Green Building ◽  
Building Energy ◽  
Green Buildings ◽  
Building Envelope ◽  
Analysis Model ◽  
Mathematical Formula

In the context of the increasingly severe energy crisis and global warming, green buildings and their energy-saving issues are being paid more attention in the world. Since envelope optimization can significantly reduce the energy consumption of green buildings, value engineering (VE) technology and building information modeling (BIM) technology are used to optimize the envelope of green buildings, which takes into account both energy saving and life cycle cost. The theoretical framework of optimization for green building envelope based on BIM-VE is proposed, including a BIM model for architecture, a life cycle cost analysis model, energy-saving analysis model, and a value analysis model. In the life-cycle cost model, a mathematical formula for the life-cycle cost is established, and BIM technology is used to generate a bill of quantity. In the energy-saving analysis model, a mathematical formula for energy saving is established, and BIM technology is used for the building energy simulation. In the scheme decision-making sub-model, VE technology integrating life cycle cost with energy saving is used to assess the envelope schemes and select the optimal one. A prefabricated project case is used to simulate and test the established methodology. The important results show that the 16 envelope schemes make the 16 corresponding designed buildings meet the green building evaluation standards, and the optimal envelope scheme is the “energy-saving and anti-theft door + exterior window 2+ floor 1+ exterior wall 1 + inner shear wall + inner partition wall 2 + planted roof” with the value 10.80 × 10−2 MW·h/ten thousand yuan. A significant finding is that the value generally rises with the increase of energy-saving rate while the life cycle cost is irregular with the increase of energy-saving rate. Compared with previous efforts in the literature, this study introduces VE technology into architectural design to further expand the current boundary of building energy-saving theory. The findings and suggestions will provide a valuable reference and guidance for the architectural design industry to optimize the envelope of green buildings from the perspective of both energy saving and life cycle cost.

scholarly journals Life Cycle Cost Analysis of a Single-Family House in Sweden

Buildings ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 215
Author(s):  
Bojana Petrović ◽  
Xingxing Zhang ◽  
Ola Eriksson ◽  
Marita Wallhagen
Keyword(s):  
Life Cycle ◽  
Life Cycle Cost ◽  
Single Family ◽  
Labor Costs ◽  
Construction Costs ◽  
Economic Parameters ◽  
A Minor ◽  
Family House ◽  
Replacement Operation

The objective of this paper was to explore long-term costs for a single-family house in Sweden during its entire lifetime. In order to estimate the total costs, considering construction, replacement, operation, and end-of-life costs over the long term, the life cycle cost (LCC) method was applied. Different cost solutions were analysed including various economic parameters in a sensitivity analysis. Economic parameters used in the analysis include various nominal discount rates (7%, 5%, and 3%), an inflation rate of 2%, and energy escalation rates (2–6%). The study includes two lifespans (100 and 50 years). The discounting scheme was used in the calculations. Additionally, carbon-dioxide equivalent (CO2e) emissions were considered and systematically analysed with costs. Findings show that when the discount rate is decreased from 7% to 3%, the total costs are increased significantly, by 44% for a 100-year lifespan, while for a 50 years lifespan the total costs show a minor increase by 18%. The construction costs represent a major part of total LCC, with labor costs making up half of them. Considering costs and emissions together, a full correlation was not found, while a partial relationship was investigated. Results can be useful for decision-makers in the building sector.

scholarly journals Investigation of the life cycle carbon impact of passive house building envelopes in Canada

2021 ◽  
Author(s):  
Patrick W. Andres
Keyword(s):  
Life Cycle ◽  
Building Envelope ◽  
Carbon Intensity ◽  
Low Carbon ◽  
Single Family ◽  
Passive House ◽  
Standard Life ◽  
System Configurations ◽  
House Building ◽  
House Standard

Whole building energy and life cycle impact modeling was conducted for a single-family detached reference building designed to meet the Passive House Standard. Life cycle operating global warming potential (GWP) and building envelope embodied GWP were assessed for two mechanical system configurations and three Canadian cities. Variations in regional electricity carbon intensity were found to significantly impact both operating and embodied GWP. Embodied GWP was found to be significant relative to operating GWP in locations with access to low carbon electricity. Additionally, use of natural gas mechanical systems in Edmonton resulted in 360% greater operating emissions than in Montreal, while electric heat pump mechanicals yielded 6,600% higher emissions. Finally, the Passive House Standard method for quantifying operating GWP was found to overestimate emissions by up to 3700% in Montreal and underestimate emissions by 34% in Edmonton, when compared to a method accounting for variations in regional electricity carbon intensity.

The Main Obstacles to Popularizing the Building Life Cycle Cost Method in China and the Solving Strategies

2014 ◽  
Vol 935 ◽  
pp. 112-117
Author(s):  
Hao Xie ◽  
Jing Wu
Keyword(s):  
Life Cycle ◽  
Energy Consumption ◽  
Theoretical Model ◽  
Life Cycle Cost ◽  
Building Energy ◽  
Economic Decisions ◽  
Building Energy Saving ◽  
Building Life Cycle ◽  
Functional Process ◽  
Positive Effect

Life Cycle Cost (LCC) method can not only help users make economic decisions on a construction project, but also have a positive effect on popularizing building energy-saving technologies and reducing building energy consumption. However, LCC has not received due attention in China. This paper analyzes the main obstacles to popularizing LCC in China and explores the solving strategies of promoting LCC in China by means of the functional process theoretical model.

Research of Cost Estimation of Energy-Saving Buildings Based on the Full Lifecycle Theory

2013 ◽  
Vol 357-360 ◽  
pp. 2454-2459
Author(s):  
Hui Ling Li ◽  
Hang Tian Liu ◽  
Xiao Qin Li
Keyword(s):  
Life Cycle ◽  
Energy Saving ◽  
Cost Estimation ◽  
Life Cycle Cost ◽  
Capital Investment ◽  
Analytical Tool ◽  
Social Benefits ◽  
Full Life Cycle ◽  
Cost Of Energy ◽  
Full Life

This paper first selects the theory of full lifecycle cost as the entry point and analyses the composition of full lifecycle cost of energy-saving buildings. Then it clarifies that the full lifecycle cost estimation of energy-saving buildings is an analytical tool in capital investment and a way to minimize the full lifecycle cost of energy-saving buildings. We also construct the concept and steps of cost estimation and build two mathematical models of full lifecycle cost estimation under two different application conditions; Finally, this paper illustrates the economic and social benefits brought by full life cycle cost estimation of energy-saving buildings through the case studies.

scholarly journals Analisis Retrofit Lampu Di Kantor Wilayah BRI Denpasar Dengan Metode Life Cycle Cost

2019 ◽  
Vol 18 (2) ◽  
Author(s):  
Muhammad Hari Wijaya ◽  
Rukmi Sari Hartati ◽  
Wayan Gede Ariastina
Keyword(s):  
Life Cycle ◽  
Energy Saving ◽  
Life Cycle Cost ◽  
Life Time ◽  
Operational Cost ◽  
Initial Cost

Penerangan merupakan salah satu kebutuhan primer manusia dimanapun berada, karena dengan adanya penerangan itu akan sangat membantu aktivitas dan produktivitas manusia. Semakin banyak jumlah manusia kebutuhan akan penerangan itu pun juga bertambah. Hal tersebut berarti berbanding lurus dengan kebutuhan listrik. Pada penelitian ini dilakukan perhitungan penghematan lampu LED menggunakan metode Life Cycle Cost  (LCC) di bangunan Kantor Wilayah BRI Denpasar. Hasilnya, Initial Cost (biaya investasi) penggantian menjadi lampu LED merek Philips membutuhkan biaya Rp. 145.093.000,00. Energy saving yang diperoleh adalah sebesar 11.309,49 kWh setiap bulannya, sehingga bill saving yang diperoleh dengan tarif listrik per kWH Rp.1.117,00 adalah Rp. 12.632.700,00 setiap bulannya. Operational Cost (biaya operasional) lampu LED yang semula Rp. 132.172.421,00 akan mengalami gradasi sebesar angka inflasi sebesar 4,2% sehingga selama life time lampu (4 tahun) akan menjadi total Rp. 562.939.535,08. Total LCC lampu LED yaitu Rp. 708.032.535,08 dengan jangka waktu 4 (empat) tahun, sedangkan total LCC lampu existing yaitu Rp. 628.293.771,91 dengan jangka waktu 2 (dua) tahun. Studi kelayakan ekonomi dengan menggunakan metode PBP menunjukkan hasil yang layak untuk diterima, namun untuk metode NPV, IRR dan PI menunjukkan hasil yang belum layak diterima. Berdasarkan perhitungan dengan menggunakan metode NPV dan PI dapat diketahui untuk menjadi hasil yang layak diterima maka initial cost adalah maksimal sebesar Rp.108.468.555,35.

scholarly journals Study of Alternatives for the Design of Sustainable Low-Income Housing in Brazil

2021 ◽  
Vol 13 (9) ◽  
pp. 4757
Author(s):  
Pollyanna Fernandes Bianchi ◽  
Víctor Yepes ◽  
Paulo Cezar Vitorio ◽  
Moacir Kripka
Keyword(s):  
Life Cycle ◽  
Low Income ◽  
Life Cycle Cost ◽  
Building Materials ◽  
Raw Materials ◽  
Single Family ◽  
Construction Time ◽  
Analytic Hierarchy ◽  
Building Information ◽  
Low Income Housing

Despite insufficient housing facilities, particularly in developing countries, construction systems are generally selected intuitively or based on conventional solutions sanctioned by practice. The present study aims to evaluate different options for the design of low-income housing in Brazil by integrating the life cycle assessment (LCA) into the decision-making process. To achieve this objective, three single-family projects with different construction systems were selected and analyzed. The most sustainable design was selected through the analytic hierarchy process (AHP). The considered parameters, which were obtained through a survey with professionals and customers, included cost, environmental impact, thermal comfort, construction time, and cultural acceptance. LCA and life cycle cost assessment (LCCA) were performed with the frontier’s system considering the cradle-to-gate cycle, which included the extraction of raw materials, manufacture of building materials, and housing construction. The projects were modelled using Autodesk Revit software with the Tally application for LCA evaluation. The results indicated that light steel frame houses present a better behavior than other conventional alternatives, and the integration of building information modelling with LCA and LCCA in the design phase can lead to the development of more sustainable houses.

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