scholarly journals Natural summer ventilation strategies for energy-saving in high-rise buildings: a case study in the Netherlands

2019 ◽  
Vol 19 (1) ◽  
pp. 25-48 ◽  
Author(s):  
Babak Raji ◽  
Martin J. Tenpierik ◽  
Regina Bokel ◽  
Andy van den Dobbelsteen
Keyword(s):  
The Netherlands ◽  
Energy Saving ◽  
High Rise ◽  
Ventilation Strategies

Energy Labeling System of Urban Residential Buildings: Market Effect and Operating Mechanism — A Case Study of Energy-Saving Renovations in the Netherlands and Its Implications

2017 ◽  
Vol 05 (04) ◽  
pp. 1750022
Author(s):  
Wei JIANG ◽  
Xuhui ZHANG
Keyword(s):  
The Netherlands ◽  
Energy Saving ◽  
Residential Buildings ◽  
Operating Mechanism ◽  
Low Carbon ◽  
Market Effect ◽  
Group Interviews ◽  
Virtuous Cycle ◽  
Labeling System

Despite China's significant progress in energy saving renovations, during the past 10 years, problems about inefficiencies remain. In the Netherlands, the energy labeling system (ELS) effectively linked policy objectives and market forces, combined with the stepped tariffs aimed at the performance of energy-saving renovation, generating a virtuous cycle of housing energy efficiency upgrading. China may draw the experience from Netherlands. In this regard, the authors probe the market effect and operating mechanism of the Dutch ELS and the stepped tariffs. The theory of multi-level governance (MLG) is introduced to the filed investigations both in China and the Netherlands. Based on the group-interviews and depth-interviews with the officials in related agencies and the residents of retrofitting housing, the authors obtained first-hand information to ensure a close case study on Netherlands' housing ELS and its implementation, in order to provide some enlightenment for China's existing housing renovation and low carbon development.

scholarly journals ESTIMATING ENERGY SAVING POTENTIAL BY TAKING INTO ACCOUNT INTERDEPENDENCE EFFECT CASE STUDY: HIGH RISE OFFICE BUILDING IN JAKARTA

2021 ◽  
Vol 2 (1) ◽  
pp. 26-32
Author(s):  
Endang Widayati
Keyword(s):  
Energy Saving ◽  
Energy Performance ◽  
Office Building ◽  
Cooling Load ◽  
Energy Saving Potential ◽  
High Rise

Abstrak: Tujuan studi ini adalah membandingkan perhitungan potensi penghematan energi tanpa memperhitungkan efek interdepensi dengan perhitungan potensi penghematan energi dengan memperhitungkan efek interdependensi berdasarkan studi kasus pada bangunan gedung terkondisikan. Estimasi potensi penghematan energi yang akurat akan menghasilkan proyek konservasi dan efisiensi energi yang bankable akan meningkatkan kepercayaan terhadap investasi proyek – proyek penghematan energi. Hal ini  akan meminimalkan ketidakpastian penghematan energi yang dapat dicapai serta meningkatkan potensi untuk mencegah risiko investasi dari  implementasi proyek – proyek konservasi dan efisiensi energi. Hasil dari studi ini menunjukkan bahwa terjadi kenaikan estimasi penghematan energi sebesar 4,29% pada ESM-1 yaitu retrofit tata cahaya dan kenaikan estimasi penghematan energi sebesar 22,75% pada ESM-2 yaitu pemasangan VSD pada AHU. Pengaruh interdependensi tersebut adalah adanya pengurangan cooling load pada bangunan gedung karena efek interdependensi pada ESM-1 dan ESM -2.  Secara total perhitungan efek interdependensi akan meningkatkan prosentase total estimasi potensi penghematan energi dari 34.23% menjadi 39,05% berdasarkan baseline energi dengan baseyear yang telah ditetapkan atau meningkat sebesar 4,82%. Perhitungan efek interdependensi akan sangat berpengaruh untuk meminimalisasi ketidakpastian apabila proyek proyek konservasi dan efisiensi energi dibiayai dengan energy performance contract dengan skema guaranteed saving maupung shared saving. Perlu tindak lanjut dari studi ini yaitu perhitungan dan verfifikasi penghematan energi hasil implementasi ESM-1, ESM-2 dan ESM-3 pada tahun berjalan.  

Water and energy saving potential by adopting pressure-reducing measures in high-rise building: A case analysis

2018 ◽  
Vol 39 (5) ◽  
pp. 505-517 ◽  
Author(s):  
Jinhui Zhao ◽  
Xi Xie ◽  
Ranbin Liu ◽  
Yao Sun ◽  
Mengke Wu ◽  
...  
Keyword(s):  
Water Supply ◽  
Energy Saving ◽  
Water Consumption ◽  
Branch Pipe ◽  
Supply System ◽  
Water Supply System ◽  
Pressure Management ◽  
High Rise ◽  
Management Measures

Indoor domestic water demands are increasing rapidly in many cities of China, among the causes, water wastage due to overpressure outflow (OPO) at water distribution points in buildings, especially in high-rise buildings, is a factor that has not gained much attention. Field tests in 23 high-rise public buildings and laboratory tests were conducted to quantitatively evaluate the influence of water pressure on water consumption in buildings. The water-saving potential by adopting pressure reducing measures was theoretically analyzed and verified based on a case study. Results indicated that water consumption is closely related to water pressure and overpressure outflow is a very common culprit of water wastage in high-rise buildings. Pressure management measures, such as branch pipe pressure-reducing valves, can reduce water consumption in buildings and improve the comfortability of use as well. Based on the laboratory pressure–outflow characteristics study of different water appliances, water-saving potential of pressure reducing measures can be theoretically evaluated. Case study demonstrated a theoretical reduction of 19.4% in water consumption by adopting branch pipe pressure-reducing valves, an actual 14,773 m3 water (11.9% reduction) and 15,955 kWh embodied energy was saved in 2015 after the implementation of branch pipe pressure-reducing valves retrofitting measure. Therefore, despite the current measures of adopting high-efficiency water appliances and/or utilization of unconventional water resources in buildings, implementation of pressure management measures is highly recommended in designing water supply system for new high-rise buildings and reconstruction of water supply system in existing high-rise buildings, thereby, promoting water, energy saving, and development of green building. Practical application: Water and energy saving in building is gaining more and more attention, however, water wastage due to overpressure outflow in buildings has not gained much attention. Based on field and laboratory tests, the water and energy saving potential in building water supply system were evaluated theoretically and further verified by a case study. Results indicate that pressure management measures such as branch pipe pressure reducing valves (PRVs) can reduce water and energy consumption in buildings. We strongly suggest that pressure management measures should be implemented in buildings, thereby, promoting water, energy saving, and development of green building.

scholarly journals Environmental Enhancement through High-Rise Building Refurbishment

2020 ◽  
Vol 12 (22) ◽  
pp. 9350 ◽  
Author(s):  
Yani Rahmawati ◽  
Christiono Utomo ◽  
Nur Suhailah Muhamad Sukri ◽  
Rezi Berliana Yasinta ◽  
Al-Hussein Mohammed Hassan Al-Aidrous
Keyword(s):  
Energy Saving ◽  
Capital Expenditure ◽  
Easy Access ◽  
Maintenance Cost ◽  
Future Research ◽  
Technical Solution ◽  
Healthy Environment ◽  
High Rise ◽  
Building Refurbishment

Property investment is always enticing, especially the high-rise residential property. The promise of the raising future value of it keeps investors attracted. Urbanisation also contributes to the massive development in this business, and it is hardly ignored. To run the business and to be able to compete with others, developers have to keep the cost attracted for the residents/buyers. The property needs to be well designed to satisfy the economical capital expenditure as well as low operation and maintenance cost. The high density of this development in an urban area makes developers tend to have low awareness of practising sustainability. Inconsistent evaluation, as well as unwell-defined assessment for sustainability, worsen the situation. This research aims to investigate and develop performance evaluation criteria of sustainability for high-rise residential building. Both qualitative and quantitative approaches were implemented through surveys. Three main factors, which are the promotion of a healthy environment, comfortability of residents and energy-saving, found to be the main categories of criteria to be considered. Based on validation through a case study, it is found that providing easy access to public transport is the most critical criteria for promoting a healthy environment. Besides, the usage of low Volatile Organic Compound (VOC) paint can give comfort to residents because it provides healthy indoor air quality. Lastly, the usage of LED bulbs and natural light supports energy saving. The criteria are then used to develop the decision-making model in selecting the best alternative for the building refurbishment, by using Analytical Hierarchy Process (AHP). Application of the decision model in a case study reveals that repainting the building using low VOC paint become the best fit option for enhancing the environment. Developers may implement this in their policy for the redevelopment of their building. The result is limited to the aggregation value; thus, future research is directing into coalition and negotiation among stakeholders by applying payoff optimum and agreement options and also automation in selecting the best technical solution.

Assessing the effect of night ventilation on PCM performance in high-rise residential buildings

2019 ◽  
Vol 43 (3) ◽  
pp. 229-249 ◽  
Author(s):  
Shahrzad Soudian ◽  
Umberto Berardi
Keyword(s):  
Thermal Energy ◽  
Phase Change Materials ◽  
Positive Impact ◽  
Residential Buildings ◽  
Solidification Rate ◽  
Operative Temperature ◽  
High Rise ◽  
Ventilation Strategies ◽  
Night Ventilation ◽  
The Impact

This article investigates the possibility to enhance the use of latent heat thermal energy storage (LHTES) as an energy retrofit measure by night ventilation strategies. For this scope, phase change materials (PCMs) are integrated into wall and ceiling surfaces of high-rise residential buildings with highly glazed facades that experience high indoor diurnal temperatures. In particular, this article investigates the effect of night ventilation on the performance of the PCMs, namely, the daily discharge of the thermal energy stored by PCMs. Following previous experimental tests that have shown the efficacy of LHTES in temperate climates, a system comprising two PCM layers with melting temperatures selected for a year-around LHTES was considered. To quantify the effectiveness of different night ventilation strategies to enhance the potential of this composite PCM system, simulations in EnergyPlusTM were performed. The ventilation flow rate, set point temperature, and operation period were the main tested parameters. The performance of the PCMs in relation to the variables was evaluated based on indoor operative temperature and cooling energy use variations in Toronto and New York in the summer. The solidification of the PCMs was analyzed based on the amount of night ventilation needed in each climate condition. The results quantify the positive impact of combining PCMs with night ventilation on cooling energy reductions and operative temperature regulation of the following days. In particular, the results indicate higher benefits obtainable with PCMs coupled with night ventilation in the context of Toronto, since this city experiences higher daily temperature fluctuations. The impact of night ventilation design variables on the solidification rate of the PCMs varied based on each parameter leading to different compromises based on the PCM and climate characteristics.

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