scholarly journals An Exhaustive Search Energy Optimization Method for Residential Building Envelope in Different Climatic Zones of Kazakhstan

Buildings ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 633
Author(s):  
Mirzhan Kaderzhanov ◽  
Shazim Ali Memon ◽  
Assemgul Saurbayeva ◽  
Jong R. Kim
Keyword(s):  
Energy Consumption ◽  
Energy Savings ◽  
Residential Buildings ◽  
Average Energy ◽  
Optimization Method ◽  
Building Envelope ◽  
Energy Reduction ◽  
Estimation Model ◽  
Total Energy Consumption ◽  
Energy Estimation

Nowadays, the residential sector of Kazakhstan accounts for about 30% of the total energy consumption. Therefore, it is essential to analyze the energy estimation model for residential buildings in Kazakhstan so as to reduce energy consumption. This research is aimed to develop the Overall Thermal Transfer Value (OTTV) based Building Energy Simulation Model (BESM) for the reduction of energy consumption through the envelope of residential buildings in seven cities of Kazakhstan. A brute force optimization method was adopted to obtain the optimal envelope configuration varying window-to-wall ratio (WWR), the angle of a pitched roof, the depth of the overhang shading system, the thermal conductivity, and the thicknesses of wall composition materials. In addition, orientation-related analyses of the optimized cases were conducted. Finally, the economic evaluation of the base and optimized cases were presented. The results showed that an average energy reduction for heating was 6156.8 kWh, while for cooling it was almost 1912.17 kWh. The heating and cooling energy savings were 16.59% and 16.69%, respectively. The frontage of the building model directed towards the south in the cold season and north in the hot season demonstrated around 21% and 32% of energy reduction, respectively. The energy cost savings varied between 9657 to 119,221 ₸ for heating, 9622 to 36,088 ₸ for cooling.

scholarly journals Lighting Control Including Daylight and Energy Efficiency Improvements Analysis

Energies ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 2166 ◽  
Author(s):  
Aniela Kaminska ◽  
Andrzej Ożadowicz
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Savings ◽  
Residential Buildings ◽  
Experimental Tests ◽  
Experimental Results ◽  
Automation System ◽  
Building Automation ◽  
Total Energy Consumption ◽  
Lighting Control

Energy used for lighting is one of the major components of total energy consumption in buildings. Nowadays, buildings have a great potential to reduce their energy consumption, but to achieve this purpose additional efforts are indispensable. In this study, the need for energy savings evaluation before the implementation of lighting control algorithms for a specified building is highlighted. Therefore, experimental tests have been carried out in a university building with laboratories and other rooms, equipped with KNX building automation system. A dimmable control strategy has been investigated, dependent on daylight illuminance. Moreover, a relationship between external and internal daylight illuminance levels has been evaluated as well. Based on the experimental results, the authors proposed a method for the rough estimation of electrical energy savings. Since, according to the EN 15232 standard, Building Automation and Control Systems (BACS) play an important role in buildings’ energy efficiency improvements, the BACS efficiency factors from this standard have been used to verify the experimental results presented in the paper. The potential to reduce energy consumption from lighting in non-residential buildings by 28% for offices and 24% for educational buildings has been confirmed, but its dependence on specific building parameters has been discussed as well.

scholarly journals The Strategy of Implementing Energy Efficiency Standards and Labels for Domestic Air Conditioners in Libya

2019 ◽  
Vol 8 (1) ◽  
Author(s):  
Salah M Alabani ◽  
Ibrahim H Tawil
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Savings ◽  
Residential Buildings ◽  
Total Energy Consumption ◽  
Air Conditioners ◽  
Improve Energy Efficiency ◽  
Reduce Energy Consumption ◽  
Two Stages ◽  
Energy Efficiency Standards

The residential sector in Libya has grown over the past decade in the construction of residential buildings due to the increase in the population. Moreover, the increase in the level of income has contributed to the increase in the purchase of household appliances, which leads to increased demand for energy. Energy consumption in the household sector accounted for 31% of total energy consumption during 2010, and the share of air conditioners in this sector consumed 18.35%. To reduce energy consumption and improve energy efficiency in this sector, policies should be considered to apply energy efficiency standards and markers to household electrical appliances, as they are considered one of the most successful programs used in the world. Countries are implementing such programs to reduce energy consumption in the domestic sector. This paper presents the possibility of implementing such programs to introduce the importance of energy efficiency standards and labeling programs for home appliances in Libya. The calculations required to design such programs show the energy savings that can be achieved during cooling loads in the summer period of 4 months July, August, September). A strategic plan has been developed during 10-year (2020-2030) to estimate the expected savings of energy consumed and to identify possible obstacles and difficulties by gradually increasing the energy efficiency ratio for comestic air conditioners in two stages, from EER10 to EER11 in the first stage is then raised to EER12 as the second stage.

Trip Energy Estimation Methodology and Model Based on Real-World Driving Data for Green-Routing Applications

2018 ◽  
Vol 2672 (24) ◽  
pp. 41-48 ◽  
Author(s):  
Jacob Holden ◽  
Harrison Van Til ◽  
Eric Wood ◽  
Lei Zhu ◽  
Jeffrey Gonder ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Fuel Consumption ◽  
Real World ◽  
Energy Use ◽  
Average Energy ◽  
Estimation Model ◽  
Energy Estimation ◽  
Conventional Vehicle ◽  
Look Up Table ◽  
Wide Range

A data-informed model to predict energy use for a proposed vehicle trip has been developed in this paper. The methodology leverages roughly one million miles of real-world driving data to generate the estimation model. Driving is categorized at the sub-trip level by average speed, road gradient, and road network geometry, then aggregated by category. An average energy consumption rate is determined for each category, creating an energy rate look-up table. Proposed vehicle trips are then categorized in the same manner, and estimated energy rates are appended from the look-up table. The methodology is robust and applicable to a wide range of driving data. The model has been trained on vehicle travel profiles from the Transportation Secure Data Center at the National Renewable Energy Laboratory and validated against on-road fuel consumption data from testing in Phoenix, Arizona. When compared against the detailed on-road conventional vehicle fuel consumption test data, the energy estimation model accurately predicted which route would consume less fuel over a dozen different tests. When compared against a larger set of real-world origin–destination pairs, it is estimated that implementing the present methodology should accurately select the route that consumes the least fuel 90% of the time. The model results can be used to inform control strategies in routing tools, such as change in departure time, alternate routing, and alternate destinations to reduce energy consumption. This work provides a highly extensible framework that allows the model to be tuned to a specific driver or vehicle type.

scholarly journals Achieving an 80% reduction in Ontario residential heating energy consumption by 2030: a tiered framework and preliminary implementation strategy

2021 ◽  
Author(s):  
Amanda Jacqueline Yip
Keyword(s):  
Energy Consumption ◽  
Perceived Risk ◽  
Implementation Strategy ◽  
Energy Savings ◽  
Residential Buildings ◽  
Climate Change Impacts ◽  
Energy Reduction ◽  
Energy Prices ◽  
Residential Heating ◽  
Heating Energy Consumption

The increasing prevalence of climate change impacts and rising energy prices has highlighted the need to achieve deep energy savings now. To accomplish this, stricter prescriptive performance requirements for residential buildings are needed. The intent of this work is to develop a framework and policy implementation strategy to achieve an 80% reduction in Ontario residential heating energy consumption by 2030. A tiered framework of consumption targets was developed using OBC 2012 SB-12 requirements as a baseline and sample compliance packages created for each tier. Construction costs for the baseline and each tier compliance package were estimated and simple payback periods determined. Impacts of fuel escalation rates on payback periods were also considered. Significant cost premiums were found between the baseline consumption and overall 80% heating energy reduction target. Lack of experience and perceived risk were found to be the greatest barriers to achieving the overall energy reduction target. A preliminary strategy and supporting policy tools was developed, taking into consideration the observed barriers to adoption.

FACTORS ENABLING AND INHIBITING SUSTAINABLE TECHNOLOGIES IN CONSTRUCTION: THE CASE OF ACTIVE SOLAR HEATING SYSTEMS

2002 ◽  
Vol 06 (03) ◽  
pp. 257-276 ◽  
Author(s):  
PAUL DEWICK ◽  
MARCELA MIOZZO
Keyword(s):  
Energy Consumption ◽  
Financial Incentives ◽  
Housing Stock ◽  
Residential Buildings ◽  
Building Envelope ◽  
Solar Heating ◽  
Mitigation Strategies ◽  
Total Energy Consumption ◽  
Construction Firms ◽  
Sustainable Technologies

The domestic building sector across Europe accounts for around 40% of total energy consumption. Mitigation strategies for greenhouse gas emissions have focused on improving the energy efficiency of buildings, both in terms of electricity use and space heating. In addition to improving the thermal properties of the building envelope and developing mechanisms to encourage energy conservation, the use of new energy technologies in new build and retro-fit residential buildings has the capacity to reduce significantly energy consumption. Active solar heating (ASH) systems are one such technology, suitable for widespread use across new and existing buildings in the housing stock, which have the potential to make a significant contribution to sustainable building and regeneration. Their generally slow adoption can be attributed to high capital cost and unknown cost effectiveness, but these factors do not adequately explain considerable differences between European countries in the take-up of new sustainable technologies in construction. This suggests that there are sets of more important factors and institutions inhibiting or facilitating their adoption. This paper examines the structural and institutional factors behind these differentials and draws implications for the management of innovation by construction firms and government policy for those countries under-exploiting the potential of ASH systems. Regulation, legislation and fiscal and financial incentives can encourage innovation and can help to promote solar technology. For countries such as the UK and France, lessons can be learned from the fixed price schemes, direct capital grant support, tax incentives and other such initiatives employed in Denmark, Germany, the Netherlands and Sweden. However, manufacturers and suppliers of ASH systems cannot be considered independently of other firms along the building chain. By raising the visibility of the adoption of this sustainable technology, construction firms can benefit their organisations from the reputation for installing this innovation, while confining the risk to this particular technology. Government can also play a role in increasing the capacity of construction firms to identify appropriate sustainable technologies and evaluate their potential costs and benefits.

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.

Analysis on Energy Efficiency and Consumption of Existing Residential Buildings in Shijiazhuang

2013 ◽  
Vol 409-410 ◽  
pp. 557-560
Author(s):  
Wu Xing Zheng ◽  
De Sheng Ju ◽  
Shi Long Liu
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Saving ◽  
Residential Buildings ◽  
Average Energy ◽  
Total Energy Consumption ◽  
Heating And Cooling ◽  
Average Energy Consumption ◽  
Future Work ◽  
Indoor Comfort

Through the investigations on a total of 2,079 residential buildings in Shijiazhuang, the author got the distributions, ages, structures, heating and cooling patterns, indoor comfort conditions, state of energy efficiency and actual energy consumptions etc. In addition, non-energy-efficient buildings, energy-saving 30%, energy-saving 50% and energy-saving 65% accounted for 24.8%, 17.8%, 22.4% and 35.0% respectively. The author calculated the total energy consumption of 397 sample existing residential buildings which is equivalent to about 48,600 t Standard Coal, and average energy consumption per unit area was about 28.0 kg/m2. The results may contribute to the future work of energy efficiency renovation of existing residential buildings in Shijiazhuang, even the whole Hebei Province.

scholarly journals Achieving an 80% reduction in Ontario residential heating energy consumption by 2030: a tiered framework and preliminary implementation strategy

2021 ◽  
Author(s):  
Amanda Jacqueline Yip
Keyword(s):  
Energy Consumption ◽  
Perceived Risk ◽  
Implementation Strategy ◽  
Energy Savings ◽  
Residential Buildings ◽  
Climate Change Impacts ◽  
Energy Reduction ◽  
Energy Prices ◽  
Residential Heating ◽  
Heating Energy Consumption

The increasing prevalence of climate change impacts and rising energy prices has highlighted the need to achieve deep energy savings now. To accomplish this, stricter prescriptive performance requirements for residential buildings are needed. The intent of this work is to develop a framework and policy implementation strategy to achieve an 80% reduction in Ontario residential heating energy consumption by 2030. A tiered framework of consumption targets was developed using OBC 2012 SB-12 requirements as a baseline and sample compliance packages created for each tier. Construction costs for the baseline and each tier compliance package were estimated and simple payback periods determined. Impacts of fuel escalation rates on payback periods were also considered. Significant cost premiums were found between the baseline consumption and overall 80% heating energy reduction target. Lack of experience and perceived risk were found to be the greatest barriers to achieving the overall energy reduction target. A preliminary strategy and supporting policy tools was developed, taking into consideration the observed barriers to adoption.

scholarly journals Refurbishment and electrification in the hotel sector: four hotels in the historic centre of Rome

2021 ◽  
Vol 312 ◽  
pp. 02013
Author(s):  
Giada Romano ◽  
Francesco Mancini
Keyword(s):  
Energy Consumption ◽  
Energy Efficient ◽  
Energy Savings ◽  
Residential Buildings ◽  
Building Envelope ◽  
Point Of View ◽  
Hot Water ◽  
Building Stock ◽  
Historic Centre ◽  
The Eu

According to the European Renovation Wave, the European building stock is obsolete and changes very slowly: more than 220 million housing units and 85-95% of the existing buildings will still be in use in 2050 and are absolutely not energy efficient. To cut emissions by 55% by 2030, the EU should reduce greenhouse gas emissions from buildings by 60%, their final energy consumption by 14% and energy consumption for heating and cooling by 18%. It is therefore urgent for the EU to focus on making buildings more energy efficient, less carbon intensive throughout their life cycle and more sustainable. From this framework comes the need for an adaptation not only of residential buildings but also of hotel facilities, which, on a national scale, make up about 45% of the accommodation facilities. In particular, the offer of accommodation facilities must be constantly adequate and the structures must be upgraded so that they always remain usable and comply with current regulations from the accessibility, seismic-structural and energy point of view. In this research, four hotels located in the historic centre of Rome have been analysed as case studies. Starting from an analysis of the current state, a series of interventions on the building envelope and systems have been studied, evaluating energy savings and the reduction of polluting emissions. With regard to the systems, the total electrification of the heating and domestic hot water preparation systems has been hypothesised, with the introduction of storage systems, also in view of participation in Demand Response programs.

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

2016 ◽  
pp. 340-367
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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