scholarly journals Validating the performance of the HVAC system for commercial buildings

2018 ◽  
Vol 7 (2.8) ◽  
pp. 491
Author(s):  
Swati Goel ◽  
R Manikandan
Keyword(s):  
Energy Efficient ◽  
Architectural Design ◽  
Complete Solution ◽  
Building Energy ◽  
Commercial Buildings ◽  
Hvac System ◽  
Energy Efficient Buildings ◽  
Energy Modelling ◽  
And Control ◽  
Energy Components

Commercial Buildings consumes a large amount of world’s energy. Energy components comprises of Lighting, Heating, Cooling, Ventilation, water heating etc. To make the building energy efficient, we need to maintain, monitor and apply thermal optimization. Numerous researchers over the world are chipping away at vitality demonstrating and control with a specific end goal to create techniques which will bring about general decrease of vitality utilization. This paper presentstheworkflow of the energy modelling HVAC (heating, ventilation and cooling)systemwhich proved to be the complete solution for low energy buildings.Also the estimation of the thermal load which helps in validation of architectural design for energy efficient buildings.

scholarly journals BIM and BEM Methodologies Integration in Energy-Efficient Buildings Using Experimental Design

Buildings ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 491
Author(s):  
Jorge González ◽  
Carlos Alberto Pereira Soares ◽  
Mohammad Najjar ◽  
Assed N. Haddad
Keyword(s):  
Experimental Design ◽  
Energy Efficient ◽  
Thermal Characteristics ◽  
Energy Performance ◽  
Building Envelope ◽  
Climatic Zones ◽  
Energy Efficient Buildings ◽  
Energy Modelling ◽  
Building Information ◽  
Energetic Performance

Linking Building Information Modelling and Building Energy Modelling methodologies appear as a tool for the energy performance analysis of a dwelling, being able to build the physical model via Autodesk Revit and simulating the energy modeling with its complement Autodesk Insight. A residential two-story house was evaluated in five different locations within distinct climatic zones to reduce its electricity demand. Experimental Design is used as a methodological tool to define the possible arrangement of results emitted via Autodesk Insight that exhibits the minor electric demand, considering three variables: Lighting efficiency, Plug-Load Efficiency, and HVAC systems. The analysis concluded that while the higher the efficiency of lighting and applications, the lower the electric demand. In addition, the type of climate and thermal characteristics of the materials that conform to the building envelope have significant effects on the energetic performance. The adjustment of different energetic measures and its comparison with other climatic zones enable decision-makers to choose the best combination of variables for developing strategies to lower the electric demand towards energy-efficient buildings.

Energy Design by Evolution: Applying Evolutionary Computing to Energy Efficient Architectural Design

2014 ◽  
Vol 899 ◽  
pp. 120-125
Author(s):  
Bernhard Sommer ◽  
Ulrich Pont
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
Architectural Design ◽  
Evolutionary Computing ◽  
Environmental Data ◽  
Design Strategies ◽  
Energy Efficient Buildings ◽  
Optimum Solution

In this paper, the authors want to show a method that allows customizing energy efficient buildings to the very task and to the very site by linking environmental data and design strategies through algorithmic processes. An optimum solution for the energy efficiency of a building can then be found by running an evolutionary solver.

scholarly journals The Discrepancy between As-Built and As-Designed in Energy Efficient Buildings: A Rapid Review

2020 ◽  
Vol 12 (16) ◽  
pp. 6372
Author(s):  
Christine Eon ◽  
Jessica K. Breadsell ◽  
Joshua Byrne ◽  
Gregory M. Morrison
Keyword(s):  
Life Cycle ◽  
Energy Efficient ◽  
Building Energy ◽  
Energy Performance ◽  
Rapid Review ◽  
Building Performance ◽  
Performance Gap ◽  
Energy Efficient Buildings ◽  
Building Life Cycle ◽  
Building Standards

Energy efficient buildings are viewed as one of the solutions to reduce carbon emissions from the built environment. However, studies worldwide indicate that there is a significant gap between building energy targets (as-designed) and the actual measured building energy consumption (as-built). Several underlying causes for the energy performance gap have been identified at all stages of the building life cycle. Focus is generally on the post-occupancy stage of the building life cycle. However, issues relating to the construction and commissioning stages of the building are a major concern, though not usually researched. There is uncertainty on how to address the as-designed versus as-built gap. The objective of this review article is to identify causes for the energy performance gap in buildings in relation to the post-design and pre-occupancy stages and review proposed solutions. The methodology applied in this research is the rapid review, which is a variant of the systematic literature review method. Findings suggest that causes for discrepancies between as-designed and as-built energy performance during the construction and commissioning stages relate to a lack of knowledge and skills, lack of communication between stakeholders and a lack of accountability for building performance post-occupancy. Recommendations to close this gap during this period include better training, improved communication standards, collaboration, energy evaluations based on post-occupancy performance, transparency of building performance, improved testing and verification and reviewed building standards.

scholarly journals Design and construction possibilities for photovoltaic integration in envelopes of new and existing buildings

Spatium ◽  
2007 ◽  
pp. 37-43
Author(s):  
Aleksandra Krstic
Keyword(s):  
Energy Source ◽  
Renewable Energy Source ◽  
Energy Efficient ◽  
Architectural Design ◽  
Integrated Systems ◽  
Existing Buildings ◽  
Solar Systems ◽  
Pv Systems ◽  
Energy Efficient Buildings ◽  
Design And Construction

Sun is the renewable energy source whose usage exerts influence on architectural design. Facade concepts of energy efficient buildings are developed producing new facade structures and components. Photovoltaic systems, as elements of active solar systems are discussed in the paper and particular attention is paid to building integrated systems, as they influence building appearance. Classification and analyzes of PV systems - materials, supporting systems, coatings and design principles are presented in the paper. The purpose of this paper is discussion on design and construction possibilities for PV integration in envelopes of new and existing buildings. Possibilities for structural variability of envelopes with PV integrated systems are described in the paper. .

scholarly journals Energy performance analysis of Region of Peel Headquarters Building as a sustainable building using the "Carrier HAP", "eQUEST" simulation program and "RETScreen" cost analysis program

2021 ◽  
Author(s):  
Afzal Siraj Siddique
Keyword(s):  
Heat Pump ◽  
Energy Efficient ◽  
Water Source ◽  
Building Energy ◽  
Open Loop ◽  
Base Case ◽  
Hvac System ◽  
Variable Air Volume ◽  
Air Volume ◽  
Energy Efficient Building

The principles of building energy simulation and its relationship with heating and cooling energy calculation help to make an integrated evaluation of building energy consumption. This is used to achieve a better and more energy efficient building. The sensitivity analysis of energy efficient HVAC design was used to create an energy efficient Peel Region Headquarters Building. An energy audit was conducted on the existing building to establish the Base Case Model "Peel Region Headquarters Building" to determine its annual energy consumption across all current usage. To reduce the total energy cost of the Base Case Model, different HVAC Systmes were investigated to analyze their energy-based performance and impact on the Greehouse Gas Emission (GHG). The sensitivity analysis was conducted using two whole building simulation programs, "Carrier HAP" and "eQUEST", with three different air systems, namely, "2-Fan Dual Duct Variable Air Volume System", "1-Fan Dual Duct Variable Air Volume System" and "1-Fan Dual Duct Variable Air Volume System with two Rooftop Packaged HVAC System'. Three different types of heat pumps, namely, Open Loop Water Source Heat Pump, Closed Loop Water Source Heat Pump, and Ground Source Heat Pump, were used to determine the efficiency and viability of the three proposed HVAC System with the existing infrastructure. RETScreen International Clean Energy Project Analysis Software (Version 4) was used to evaluate the energy production and savings, life-cycle costs, emission reductions and financial viability. MNECB/CBIP and ASHRAE 90.1 (2004) Building Compliance Program was used for determining the key elements for analyzing the building components and for providing recommendations for an energy efficient building. The improvement from the conventional HVAC System to implementation of an Open Loop Water Source Heat Pump resulted in 75% energy cost savings for the Peel Region Headquarters Building. The percentage contribution of CO₂ was reduced by 78%.

Evaluation of Cooling, Heating, and Power (CHP) Systems Based on Building Energy-Rating

2007 ◽  
Author(s):  
N. Fumo ◽  
P. J. Mago ◽  
L. M. Chamra
Keyword(s):  
Energy Efficiency ◽  
Economic Analysis ◽  
Energy Efficient ◽  
Energy Use ◽  
Management Practices ◽  
Building Energy ◽  
Energy Performance ◽  
Energy Star ◽  
Star Rating ◽  
Energy Efficient Buildings

Cooling, Heating and Power (CHP) systems are a form of distributed generation that uses internal combustion prime-power engines to generate electricity while recovering heat for other uses. CHP is a promising technology for increasing energy efficiency through the use of distributed electric and thermal energy recovery-delivery systems at or near end-user sites. Although this technology seems to be economically feasible, the evaluation and comparison of CHP systems cannot be restricted to economical considerations only. Standard economic analysis, such as life cycle economic analysis, does not take in consideration all the benefits that can be obtained from this technology. For this reason, several aspects to perform a non-conventional evaluation of CHP systems have to be considered. Among the aspects to be included in a non-conventional evaluation are: power reliability, power quality, environmental quality, energy-efficient buildings, fuel source flexibility, brand and marketing benefits, protection from electric rate hikes, and benefits from promoting energy management practices. Some benefits of these non-economical evaluations can be transferred into an economic evaluation but others give intangible potential to the technology. This paper focus on a non-conventional evaluation based on energy-efficient buildings, which is associated to energy conservation and improvement of the building energy performance rating for government energy programs like Energy Star and Leadership in Energy and Environmental Design (LEED). Results show that the use of CHP systems could improve the Energy Star Rating in more than 50 points. The Energy Star Rating is significant on the LEED Rating as a building can score up to 10 points of the 23 available in the Energy & Atmosphere category on energy efficiency alone. As much as 8 points can be obtained in this category due to the Energy Star rating increment from the use of CHP systems. Clearly the use of CHP systems will help building owners to reach the benefits from these energy programs while improving the overall energy use and energy cost.

scholarly journals Application of Artificial Neural Networks in the Urban Building Energy Modelling of Polish Residential Building Stock

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8285
Author(s):  
Marcin Zygmunt ◽  
Dariusz Gawin
Keyword(s):  
Neural Networks ◽  
Artificial Neural Networks ◽  
Planning Process ◽  
Residential Building ◽  
Building Energy ◽  
Building Stock ◽  
Energy Efficient Buildings ◽  
Energy Modelling ◽  
Residential Building Stock ◽  
Artificial Neural

The development of energy-efficient buildings and sustainable energy supply systems is an obligatory undertaking towards a more sustainable future. To protect the natural environment, the modernization of urban infrastructure is indisputably important, possible to achieve considering numerous buildings as a group, i.e., Building Energy Cluster (BEC). The urban planning process evaluates multiple complex criteria to select the most profitable scenario in terms of energy consumption, environmental protection, or financial profitability. Thus, Urban Building Energy Modelling (UBEM) is presently a popular approach applied for studies towards the development of sustainable cities. Today’s UBEM tools use various calculation methods and approaches, as well as include different assumptions and limitations. While there are several popular and valuable software for UBEM, there is still no such tool for analyses of the Polish residential stock. In this work an overview on the home-developed tool called TEAC, focusing on its’ mathematical model and use of Artificial Neural Networks (ANN). An exemplary application of the TEAC software is also presented.

Solar radiation control passive strategy for reduction of heating and cooling energy use in arid climate: Case of Afghanistan

2021 ◽  
pp. 1420326X2110501
Author(s):  
Shambalid Ahady ◽  
Nirendra Dev ◽  
Anubha Mandal
Keyword(s):  
Developing Countries ◽  
Energy Efficient ◽  
Energy Use ◽  
Residential Building ◽  
Building Energy ◽  
Developed Countries ◽  
Energy Performance ◽  
Climatic Conditions ◽  
Local Conditions ◽  
Energy Efficient Buildings

Buildings are significant consumers of energy and producer of greenhouse gases worldwide, and serious efforts have been put into designing energy-efficient buildings. Significant technological advances have been achieved in developed countries; however, advances have rarely been adopted in developing countries like Afghanistan. Such trends emerge from the lack of research in designing energy-efficient buildings to local conditions, practices and materials. This research focused on building energy modelling and simulation to evaluate the energy performance impact of different shading and orientation. The research design follows a case study over an actual seven-storey multi-apartment residential building in the city of Mazar-I-Sharif, Afghanistan, using primary field data and dynamic simulation. Findings demonstrated that neighbouring structures have a positive correlation with a cooling demand. Meanwhile, south is the optimal orientation to face the building's glazed façade, saving up to 7.4% of cooling and 9.7% of heating energy. Moreover, movable shading devices installed on the building's openings in the summer season reduce the building energy load up to 19%, with a total energy cost reduction of AFN. 188,448 ($2447.37 US) annually. The study underlines the vast research scope in customizing building designs to Afghanistan's climatic conditions and other developing countries, thus contributing to buildings’ sustainability.

Sign in / Sign up

Export Citation Format

Share Document