scholarly journals Optimization of Energy Consumption in Net-Zero Energy Buildings with Increasing Thermal Comfort of Occupants

2020 ◽  
Vol 2020 ◽  
pp. 1-17 ◽  
Author(s):  
Mohsen Mahdavi Adeli ◽  
Said Farahat ◽  
Faramarz Sarhaddi
Keyword(s):  
Energy Consumption ◽  
Thermal Comfort ◽  
General Definition ◽  
Zero Energy ◽  
Zero Energy Building ◽  
Net Zero Energy ◽  
Net Zero Energy Building ◽  
Net Zero ◽  
Net Zero Energy Buildings ◽  
Zero Energy Buildings

Residential and commercial buildings consume approximately 60% of the world’s electricity. It is almost impossible to provide a general definition of thermal comfort, because the feeling of thermal comfort is affected by varying preferences and specific traits of the population living in different climate zones. Considering that no studies have been conducted on thermal satisfaction of net-zero energy buildings prior to this date, one of the objectives of the present study is to draw a comparison between the thermal parameters for evaluation of thermal comfort of a net-zero energy building occupants. In so doing, the given building for this study is first optimized for the target parameters of thermal comfort and energy consumption, and, hence, a net-zero energy building is formed. Subsequent to obtaining the acceptable thermal comfort range, the computational analyses required to determine the temperature for thermal comfort are carried out using the Computational Fluid Dynamics (CFD) model. The findings of this study demonstrate that to reach net-zero energy buildings, solar energy alone is not able to supply the energy consumption of buildings and other types of energy should also be used. Furthermore, it is observed that optimum thermal comfort is achieved in moderate seasons.

scholarly journals Techno Economic Evaluation and Feasibility Analysis of a Hybrid Net Zero Energy Building in Pakistan: A Case Study of Hospital

2021 ◽  
Vol 9 ◽  
Author(s):  
Saba Arif ◽  
Juntakan Taweekun ◽  
Hafiz Muhammad Ali ◽  
Thanansak Theppaya
Keyword(s):  
Economic Evaluation ◽  
Payback Period ◽  
Zero Energy ◽  
Hybrid Microgrid ◽  
Zero Energy Building ◽  
Net Zero Energy ◽  
Net Zero Energy Building ◽  
Net Zero ◽  
Net Zero Energy Buildings ◽  
Zero Energy Buildings

The current study is an economic evaluation and feasibility study of hybrid microgrid Net Zero Energy Buildings in Pakistan. A Net Zero Energy approach is proposed for a two-story hospital building situated in Taxila, Pakistan. Consequently, to design a hybrid Net Zero Energy Building, the solar radiation potential of the subject location and electricity usage of the hospital are estimated. The proposed hybrid microgrid Net Zero Energy Building comprises photovoltaic modules and converters. However, the thermal load is computed as a grid-connected hybrid system. Economic evaluation is performed by using economic indicators of the net present cost and the payback period. Also, initial and operational costs are determined, to determine the profitability of the project. Results show that the analysis is a cost-effective approach and has a payback period of 2.53y. Additionally, the per-unit cost of electricity is reduced to 0.12 USD/kWh. Moreover, the energy produced by a hybrid system is 10.24% more economical than that of the pre-working grid system. Results explain the reduction in the cost of energy and profit margin in electricity generation and the increase in electricity production and feasibility of hybrid Net Zero Energy Buildings in Pakistan. Research will help to develop an approach toward an IEA task 47 in Pakistan with the possible development of simulation-based installations of Net Zero Energy Buildings in the health sector in Pakistan.

scholarly journals PENGEMBANGAN DESAIN MICRO HOUSE DALAM MENUNJANG PROGRAM NET ZERO ENERGY BUILDINGS (NZE-Bs)

2020 ◽  
Vol 4 (1) ◽  
pp. 73
Author(s):  
Asep Yudi Permana ◽  
Karto Wijaya ◽  
Hafiz Nurrahman ◽  
Aathira Farah Salsabilla Permana
Keyword(s):  
Energy Efficiency ◽  
Global Warming ◽  
Energy Consumption ◽  
Thermal Comfort ◽  
Zero Energy ◽  
Net Zero Energy ◽  
Net Zero ◽  
Geological Conditions ◽  
Net Zero Energy Buildings ◽  
Zero Energy Buildings

Abstract: Energy efficiency is a top priority in design, because design errors that result in wasteful energy will impact operational costs as long as the building operates. The opening protection in the facade should be adjusted according to their needs, for optimum use of sky light. Inhibiting the entry of solar heat into the room through the process of radiation, conduction or convection, optimum use of sky light and efforts to use building skin elements for shading are very wise efforts for energy savings. House construction planning must be careful and consider many things, including: physical potential. Physical potential is a consideration of building materials, geological conditions and local climate. Related to the issue of global warming that occurs in modern times, climate is a major consideration that needs to be resolved.The purpose of building design, especially in residential homes aims to create amenities for its inhabitants. Amenities are achieved through physical comfort, be it spatial comfort, thermal comfort, auditory comfort, or visual comfort.Energy waste is also caused by building designs that are not well integrated and even wrong and are not responsive to aspects of function, and climate. This is worsened by the tendency of the designers to prioritize aesthetic aspects (prevailing trends). The issue of green concepts and energy consumption efficiency through the Net Zero-Energy Buildings (NZE-Bs) program from the housing sector as a response to tackling global warming is already familiar in Indonesia, although its application has not yet been found significantly. Green concepts offered by housing developers are often merely marketing tricks and are not realized and grow the responsibility of the residents to look after them. Due to the lack of understanding of the green concept, housing developers tend to offer more a beautiful and green housing environment, not the actual green concept.Keyword: Socio-culture, Energy efficiency, Energy consumption, Environment. The green conceptAbstrak: Efisiensi energi merupakan prioritas utama dalam disain, karena kesalahan disain yang berakibat boros energi akan berdampak terhadap biaya opersional sepanjang bangunan tersebut beroperasi. Pelindung bukaan pada fasade sebaiknya dapat diatur sesuai kebutuhannya, untuk pemanfaatan terang langit seoptimal mungkin. Penghambatan masuknya panas matahari kedalam ruangan baik melalui proses radiasi, konduksi atau konveksi, pemanfaatan terang langit seoptimal mungkin serta upaya pemanfaatan elemen kulit bangunan untuk pembayangan merupakan upaya yang sangat bijaksana bagi penghematan energi. Perencanaan pembangunan rumah harus cermat dan mempertimbangkan banyak hal, antara lain: potensi fisik. Potensi fisik adalah pertimbangan akan bahan bangunan, kondisi geologis dan iklim setempat. Terkait dengan isu pemanasan global yang terjadi pada masa modern ini, iklim menjadi sebuah pertimbangan utama yang perlu diselesaikan.Tujuan desain bangunan khususnya pada rumah tinggal bertujuan menciptakan amenities bagi penghuninya. Amenities dicapai melalui kenyamanan fisik, baik itu spatial comfort, thermal comfort, auditory comfort, maupun visual comfort.Pemborosan energi juga disebabkan oleh desain bangunan yang tidak terintegrasi dengan baik bahkan salah dan tidak tanggap terhadap aspek fungsi, serta iklim. Hal tersebut diperparah yang kecenderungan para perancang lebih mementingkan aspek estetis (tren yang berlaku). Isu konsep hijau dan efisiensi konsumsi energi melalui program Net Zero-Energy Buildings (NZE-Bs) dari sektor perumahan sebagai respon untuk menanggulangi pemanasan global sudah tidak asing di Indonesia, walaupun penerapannya masih belum dapat ditemukan secara signifikan. Konsep hijau yang ditawarkan oleh pengembang perumahan seringkali hanya sebagai trik pemasaran belaka dan tidak diwujudkan serta ditumbuhkan tanggung jawab para penghuni untuk menjaganya. Akibat minimnya pemahaman mengenai konsep hijau tersebut, para pengembang perumahan cenderung lebih banyak menawarkan lingkungan perumahan yang asri dan hijau, bukan konsep hijau yang sebenarnya.Kata Kunci: Sosio-kultur, Efisiensi Energi, Konsumsi energi, Lingkungan, Konsep Hijau

scholarly journals Net-Zero Energy Buildings: Principles and Applications

2020 ◽  
Author(s):  
Maher Shehadi
Keyword(s):  
Climate Change ◽  
Design Tools ◽  
Zero Energy ◽  
Active Participant ◽  
Zero Energy Building ◽  
Net Zero Energy ◽  
Net Zero Energy Building ◽  
Net Zero ◽  
Net Zero Energy Buildings ◽  
Zero Energy Buildings

Global warming and climate change are rising issues during the last couple of decades. With residential and commercial buildings being the largest energy consumers, sources are being depleted at a much faster pace in the recent decades. Recent statistics shows that 14% of humans are active participant to protect the environment with an additional 48% sympathetic but not active. In this chapter, net-zero energy buildings design tools and applications are presented that can help designers in the commercial and residential sectors design their buildings to be net-zero energy buildings. Case studies with benefits and challenges will be presented to illustrate the different designs to achieve a net-zero energy building (NZEB).

scholarly journals From Low-Energy to Net Zero-Energy Buildings: Status and Perspectives

2011 ◽  
Vol 6 (1) ◽  
pp. 46-57 ◽  
Author(s):  
Karsten Voss ◽  
Eike Musall ◽  
Markus Lichtmeß
Keyword(s):  
Energy Balance ◽  
Zero Energy ◽  
Load Matching ◽  
Zero Energy Building ◽  
Net Zero Energy ◽  
Net Zero Energy Building ◽  
Net Zero ◽  
Energy Balance Approach ◽  
Net Zero Energy Buildings ◽  
Energy Efficient Building

“Net Zero-Energy Building” has become a popular catchphrase to describe the synergy between energy-efficient building and renewable energy utilisation to achieve a balanced energy budget over an annual cycle. Taking into account the energy exchange with a grid overcomes the limitations of energy-autonomous buildings with the need for seasonal energy storage on-site. Although the expression, “Net Zero-Energy Building,” appears in many energy policy documents, a harmonised definition or a standardised balancing method is still lacking. This paper reports on the background and the various effects influencing the energy balance approach. After discussing the national energy code framework in Germany, a harmonised terminology and balancing procedure is proposed. The procedure takes not only the energy balance but also energy efficiency and load matching into account.

scholarly journals A Review on Various Designing Techniques Used for Net Zero Energy Buildings

2021 ◽  
pp. 22-25
Author(s):  
Rohit Malviya ◽  
Shravan Vishwakarma
Keyword(s):  
Energy Demand ◽  
Optimized Design ◽  
Zero Energy ◽  
Zero Energy Building ◽  
Net Zero Energy ◽  
Net Zero ◽  
Viable Solution ◽  
Specific Objective ◽  
Net Zero Energy Buildings ◽  
Zero Energy Buildings

Net-zero energy buildings (NZEBs) were proposed as a viable solution for reducing building energy usage and contamination emission levels. To achieve the desired specific objective, the setups and abilities of the deployed RES in NZEBs should be carefully chosen. The goal of this project is to develop an optimized design approach for a zero-energy building that takes into account the building's usage of energy. The continuous expansion of international energy demand as a result of industrialization and growing populations is presently a major source of concern.

scholarly journals Solar Energy and Its Purpose in Net-Zero Energy Building

2020 ◽  
Author(s):  
Mostafa Esmaeili Shayan
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Solar Energy ◽  
Energy Conservation ◽  
Zero Energy ◽  
Bottom Up ◽  
Zero Energy Building ◽  
Net Zero Energy ◽  
Net Zero Energy Building ◽  
Net Zero

The Net Zero Energy Building is generally described as an extremely energy-efficient building in which the residual electricity demand is provided by renewable energy. Solar power is also regarded to be the most readily available and usable form of renewable electricity produced at the building site. In contrast, energy conservation is viewed as an influential national for achieving a building’s net zero energy status. This chapter aims to show the value of the synergy between energy conservation and solar energy transfer to NZEBs at the global and regional levels. To achieve these goals, both energy demand building and the potential supply of solar energy in buildings have been forecasted in various regions, climatic conditions, and types of buildings. Building energy consumption was evaluated based on a bottom-up energy model developed by 3CSEP and data inputs from the Bottom-Up Energy Analysis System (BUENAS) model under two scenarios of differing degrees of energy efficiency intention. The study results indicate that the acquisition of sustainable energy consumption is critical for solar-powered net zero energy buildings in various building styles and environments. The chapter calls for the value of government measures that incorporate energy conservation and renewable energy.

scholarly journals Zero Energy Buildings: Systematic Literature Review

2021 ◽  
Author(s):  
Mohammad Reza Bahrami
Keyword(s):  
Energy Consumption ◽  
Renewable Resources ◽  
Zero Energy ◽  
Conservation Of Energy ◽  
Surplus Energy ◽  
Zero Energy Building ◽  
Net Zero Energy ◽  
Net Zero Energy Building ◽  
Net Zero ◽  
Energy Law

Zero Energy Building or Nearly Zero Energy Building or Net Zero Energy Building-roughly means the same thing. ZEB for short is a building that has approximately zero energy consumption. The Zero Energy Consumption does not literally mean that the building does not consume any energy at all, on the contrary it is based on conservation of energy law in Physics. In a nutshell the building also generates energy from renewable resources, which is not just used to meet energy requirements of the building, but the surplus energy is also transferred to a transmission station or other building. Thus, ZEB is achieved. Use of ZEB is very crucial to save non-renewable resources like coal which are used to generate electricity

Adaptive Energy Optimization Toward Net-Zero Energy Building Clusters

2016 ◽  
Vol 138 (6) ◽  
Author(s):  
Philip Odonkor ◽  
Kemper Lewis ◽  
Jin Wen ◽  
Teresa Wu
Keyword(s):  
Energy Resources ◽  
Distributed Energy ◽  
Zero Energy ◽  
Operational Strategies ◽  
Operation Conditions ◽  
Zero Energy Building ◽  
Net Zero Energy ◽  
Net Zero Energy Building ◽  
Net Zero ◽  
Net Zero Energy Buildings

Traditionally viewed as mere energy consumers, buildings have adapted, capitalizing on smart grid technologies and distributed energy resources to efficiently use and trade energy, as evident in net-zero energy buildings (NZEBs). In this paper, we examine the opportunities presented by applying net-zero to building communities (clusters). This paper makes two main contributions: one, it presents a framework for generating Pareto optimal operational strategies for building clusters; two, it examines the energy tradeoffs resulting from adaptive decisions in response to dynamic operation conditions. Using a building cluster simulator, the proposed approach is shown to adaptively and significantly reduce total energy cost.

Sign in / Sign up

Export Citation Format

Share Document