scholarly journals Impact of Passive Energy Efficiency Measures on Cooling Energy Demand in an Architectural Campus Building in Karachi, Pakistan

2021 ◽  
Vol 13 (13) ◽  
pp. 7251
Author(s):  
Mushk Bughio ◽  
Muhammad Shoaib Khan ◽  
Waqas Ahmed Mahar ◽  
Thorsten Schuetze
Keyword(s):  
Energy Efficiency ◽  
Energy Demand ◽  
Electricity Consumption ◽  
Information Modeling ◽  
Base Case ◽  
Energy Efficiency Measures ◽  
Efficiency Measures ◽  
The Impact ◽  
Cooling Energy Demand ◽  
Campus Building

Electric appliances for cooling and lighting are responsible for most of the increase in electricity consumption in Karachi, Pakistan. This study aims to investigate the impact of passive energy efficiency measures (PEEMs) on the potential reduction of indoor temperature and cooling energy demand of an architectural campus building (ACB) in Karachi, Pakistan. PEEMs focus on the building envelope’s design and construction, which is a key factor of influence on a building’s cooling energy demand. The existing architectural campus building was modeled using the building information modeling (BIM) software Autodesk Revit. Data related to the electricity consumption for cooling, building masses, occupancy conditions, utility bills, energy use intensity, as well as space types, were collected and analyzed to develop a virtual ACB model. The utility bill data were used to calibrate the DesignBuilder and EnergyPlus base case models of the existing ACB. The cooling energy demand was compared with different alternative building envelope compositions applied as PEEMs in the renovation of the existing exemplary ACB. Finally, cooling energy demand reduction potentials and the related potential electricity demand savings were determined. The quantification of the cooling energy demand facilitates the definition of the building’s electricity consumption benchmarks for cooling with specific technologies.

scholarly journals Energy Efficiency Measures Applied to Heritage Retrofit Buildings: A Simulated Student Housing Case Study in Vienna

Heritage ◽  
2021 ◽  
Vol 4 (4) ◽  
pp. 3919-3937
Author(s):  
Essam Elnagar ◽  
Simran Munde ◽  
Vincent Lemort
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
Energy Demand ◽  
Energy Performance ◽  
Building Envelope ◽  
Positive Energy ◽  
Energy Status ◽  
Pv System ◽  
Energy Efficiency Measures ◽  
Efficiency Measures

One pavilion was selected for deep retrofitting from the Otto Wagner area situated in the west of Vienna. The retrofitting process involves sustainable and energy-efficient construction to improve the energy performance and energy production potential of the building while preserving the cultural heritage and significance. This four-story pavilion was re-designed according to the proposed regulations of a net positive energy university building to become a student residence. Architectural, building envelope, and engineering interventions along with various changes were simulated through the Sefaira tool in the SketchUp model. These included: optimization of the U-values of the roof, walls, and floor; the addition of different layers of sustainable energy-efficient insulation materials to decrease the overall energy demand. The specific energy demands for heating, cooling, and lighting were decreased in the proposed model to reduce the total energy use intensity from 248.9 kWh/(m2 year) to 54.3 kWh/(m2 year) resulting in a 78.2% reduction. The main goal of this study is to try and achieve a net positive energy status building as part of the Otto Wagner area by improving the building envelope and integrating renewable energies. A total of 22.5% of the annual energy consumption was generated by the designed PV system. The selected building achieved the passive house standards in Austria by optimizing the energy performance with the proposed energy efficiency measures.

Energy Efficiency Measures for a High-Tech Building with a Solar Roof

2014 ◽  
Vol 1073-1076 ◽  
pp. 1233-1238
Author(s):  
Yao Lin Lin ◽  
Wei Yang ◽  
Ming Sheng Liu
Keyword(s):  
Energy Efficiency ◽  
Energy Savings ◽  
Electricity Consumption ◽  
Electricity Demand ◽  
High Tech ◽  
Solar Panels ◽  
Electrical Grid ◽  
Energy Efficiency Measures ◽  
Efficiency Measures ◽  
Demand Reduction

This paper presents the implementation of energy efficiency measures in a building that consists of office, lab and clean room area. Total Performance Oriented Optimization and Retrofits (TPORs) were implemented. 594 kW solar panels were installed on the roof and connected to the electrical grid during the optimization process. Ten power meters were installed throughout the building to measure the total building electricity demand, solar generated electricity demand, HVAC and non-HVAC-equipment demand to quantify the energy savings from the implementation of the energy efficiency measures and savings from the solar panels. The electricity savings from optimization on the HVAC system is about 7,209,000kWh/year (194.4kWh/m2-year), which is about 30% of the total building electricity consumption with peak demand reduction of 935 kW. There savings come from the solar panel is 811,925 kWh/yr; however, it effectively reduced the peak electricity demand by 302.6 kW.

The impact of household energy efficiency measures on health: A meta-analysis

Energy Policy ◽  
2014 ◽  
Vol 65 ◽  
pp. 583-593 ◽  
Author(s):  
Christopher D. Maidment ◽  
Christopher R. Jones ◽  
Thomas L. Webb ◽  
E. Abigail Hathway ◽  
Jan M. Gilbertson
Keyword(s):  
Energy Efficiency ◽  
Meta Analysis ◽  
Household Energy ◽  
Energy Efficiency Measures ◽  
Efficiency Measures ◽  
The Impact

scholarly journals Affordable, Energy-Efficient Housing Design for Chile: Achieving Passivhaus Standard with the Chilean State Housing Subsidy

2020 ◽  
Vol 10 (21) ◽  
pp. 7390 ◽  
Author(s):  
Aner Martinez-Soto ◽  
Yarela Saldias-Lagos ◽  
Valentina Marincioni ◽  
Emily Nix
Keyword(s):  
Energy Efficiency ◽  
Co2 Emissions ◽  
Energy Efficient ◽  
Energy Demand ◽  
Economic Feasibility ◽  
Housing Subsidy ◽  
Passive House ◽  
Housing Design ◽  
Energy Efficiency Measures ◽  
Efficiency Measures

In Chile, it is estimated that the energy demand will continue to increase if substantial energy efficiency measures in housing are not taken. These measures are generally associated with technical and mainly economic difficulties. This paper aims to show the technical and economic feasibility of achieving Passivhaus standard house in Chile, considering the budget of the maximum state subsidy currently available (Chilean Unidad de Fomento (CLF) 2000 ≈ 81,000 USD). The design was simulated in the Passive House Planning Package software to determine if the house could be certified with the selected standard. At the same time, the value of all the items was quantified in order not to exceed the stipulated maximum budget for a house considered as affordable. It was shown that in terms of design it is possible to implement the Passivhaus standard given the current housing subsidy. The designed housing ensures a reduction of 85% in heating demand and a 60% reduction in CO2 emissions during the operation, compared to an average typical Chilean house.

scholarly journals Using sustainable development tools for solving property rights in Montenegro

2013 ◽  
Vol 7 (2-3) ◽  
pp. 127-131
Author(s):  
Jelena Janjusevic
Keyword(s):  
Energy Efficiency ◽  
Energy Use ◽  
Electricity Consumption ◽  
Use Of Space ◽  
Energy Efficiency Measures ◽  
Efficiency Measures ◽  
State Administration ◽  
Integrated Policy ◽  
The Government ◽  
Negative Impacts

In recent months Montenegro has been faced with serious budget problems , one proposed solution of which has been to reduce the number of employees in state administration. Additionally, the costs of living are above the disposable budget of most households, in particular the high cost of electricity. While the government warns about a lack of electricity, the citizens are hardly in the position to cover these costs. Montenegro is dealing with the double challenge of inefficient use of space (the country features over 100,000 illegal homes)(I don’t understand the link between inefficient use of space and illegal homes) and inefficient energy use (Montenegro needs an average of 8.5 times more energy per unit produced than an average EU country). How can these problems be solved in a way which pleases both sides? In this paper, an approach is presented which links the solving of the problem of illegal construction with increasing the level of energy efficiency in households, businesses and other facilities. There is a model developed by UNDP Montenegro – an integrated policy solution to the double challenge of providing energy efficiency measures to incentivise households to legalise their homes. The legalisation of illegal buildings by the introduction of mandatory energy efficiency measures in them may at the same time result in an increase of revenue to the central and local budgets, the reduction of negative impacts on the environment, an increase in employment, the engagement of the economy, a reduction of electricity consumption and thereby to reduce the need to import electricity, and ultimately the increased welfare of the population.

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