Study on Design of Passive Low-Energy Conference Building and Performance Analysis

2012 ◽  
Vol 174-177 ◽  
pp. 2046-2051
Author(s):  
Ming Liu ◽  
Bao Gang Zhang ◽  
Bin Chen ◽  
Jie Yuan ◽  
Yue Fan ◽  
...  
Keyword(s):  
Energy Consumption ◽  
High Energy ◽  
Low Energy ◽  
Solar Collectors ◽  
Public Building ◽  
Shape Coefficient ◽  
The Public ◽  
Passive Strategies ◽  
And Performance ◽  
High Energy Consumption

The problem on high-energy consumption of public building has drawn wide attention with the development of architectural techniques and deficiency of renewable energy. Rapid plan and decision in the early stages of design can have a deep influence on the performances and energy consumption of the public building. Based on the climate and passive strategies in DaLian, the paper studied design pattern and performance the low-energy conference center. The parameters, such as shape coefficient, orientation, area ratio of window to wall and solar collectors, were optimized. The annual energy consumption of the building with solar collectors was 14.2 kWh/m2.a. The economic performance of the designed conference was analyzed and payback period is calculated, namely 6.85 year.

scholarly journals Research on the Defrosting System of Refrigerated Containers Combining Air and Electro-Thermal Energy and the Controlling Strategy

2021 ◽  
Vol 248 ◽  
pp. 02058
Author(s):  
Kaitai Hua
Keyword(s):  
Energy Consumption ◽  
Thermal Energy ◽  
Pressure Change ◽  
High Energy ◽  
Structural Features ◽  
Low Energy ◽  
Wind Pressure ◽  
Long Duration ◽  
Low Energy Consumption ◽  
High Energy Consumption

Considering the problems such as long duration of defrosting, low working reliability and high energy consumption of refrigerated containers, this paper put forward a new defrosting method combining air and electro-thermal energy, and designed a new defrosting structure system based on the structural features of refrigeration modules of refrigerated containers. The two-variable method of wind pressure change and temperature difference change on both sides of the evaporator was used to detect frosting, and the specific controlling strategy supporting the new defrosting system was provided to realize the effect of intelligent defrosting. It can provide references for fast defrosting, intelligent defrosting and low energy consumption defrosting of refrigerated containers.

scholarly journals Hybrid Blockchain for IoT—Energy Analysis and Reward Plan

Sensors ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 305
Author(s):  
Jiejun Hu ◽  
Martin J. Reed ◽  
Mays Al-Naday ◽  
Nikolaos Thomos
Keyword(s):  
Energy Consumption ◽  
High Energy ◽  
Byzantine Fault Tolerance ◽  
Public And Private ◽  
The Public ◽  
Iot Applications ◽  
Blockchain Technology ◽  
Puzzle Solving ◽  
Computationally Intensive ◽  
High Energy Consumption

Blockchain technology has brought significant advantages for security and trustworthiness, in particular for Internet of Things (IoT) applications where there are multiple organisations that need to verify data and ensure security of shared smart contracts. Blockchain technology offers security features by means of consensus mechanisms; two key consensus mechanisms are, Proof of Work (PoW) and Practical Byzantine Fault Tolerance (PBFT). While the PoW based mechanism is computationally intensive, due to the puzzle solving, the PBFT consensus mechanism is communication intensive due to the all-to-all messages; thereby, both may result in high energy consumption and, hence, there is a trade-off between the computation and the communication energy costs. In this paper, we propose a hybrid-blockchain (H-chain) framework appropriate for scenarios where multiple organizations exist and where the framework enables private transaction verification and public transaction sharing and audit, according to application needs. In particular, we study the energy consumption of the hybrid consensus mechanisms in H-chain. Moreover, this paper proposes a reward plan to incentivize the blockchain agents so that they make contributions to the H-chain while also considering the energy consumption. While the work is generally applicable to IoT applications, the paper illustrates the framework in a scenario which secures an IoT application connected using a software defined network (SDN). The evaluation results first provide a method to balance the public and private parts of the H-chain deployment according to network conditions, computation capability, verification complexity, among other parameters. The simulation results demonstrate that the reward plan can incentivize the blockchain agents to contribute to the H-chain considering the energy consumption of the hybrid consensus mechanism, this enables the proposed H-chain to achieve optimal social welfare.

Structure Adjustment and Sustainable Growth in Hebei Province with the Bondage of Energy Resources and Environment

2010 ◽  
Vol 44-47 ◽  
pp. 3164-3168
Author(s):  
Qun Li Wu
Keyword(s):  
Energy Consumption ◽  
High Growth ◽  
High Energy ◽  
Sustainable Growth ◽  
Hebei Province ◽  
Low Energy ◽  
Low Energy Consumption ◽  
High Pollution ◽  
Energy Consumptions ◽  
High Energy Consumption

With the datum of output, energy consumptions and environment pollutions of 36 industries of HeBei Province during the period of 2005-2007, we first calculated the marginal values of GDP contributions, energy consumptions and environment damages each industry played on the whole provincial economy. Compared with the average values, the industries were further divided into four groups with the method of Four Quadrants, which are the ones of (High-Growth-Contribution, High-Energy-Consumption or High-Pollution), (Low-Growth-Contribution, High-Energy-Consumption or High-Pollution)), (Low-Growth –Contribution , Low-Energy-Consumption or Low-Pollution), (High-Growth–Contribution , Low-Energy-Consumption or Low-Pollution). Based on this division, we put forward the suggestions of structural adjustment for each group of industries in views of sustainable development.

Subei Urban Residential Developments in Thermal Comfort Problem

2014 ◽  
Vol 641-642 ◽  
pp. 1029-1032
Author(s):  
Jin Wang
Keyword(s):  
Energy Consumption ◽  
Thermal Comfort ◽  
High Energy ◽  
Low Energy ◽  
High Tech ◽  
High Grade ◽  
The North ◽  
Residential Developments ◽  
Low Energy Consumption ◽  
High Energy Consumption

Many residents are superstitious so-called high-tech residential, see the technology will bring the thermal comfort, in fact, some high-tech residential only additional high-grade HVAC facility, the thermal comfort should not advocate in the northern Jiangsu area, after all, this is a high energy consumption of thermal comfort. In the north of Jiangsu Province, should promote low energy consumption of thermal comfort residential.

Oxygen Supply Method Using Gas-Permeable Film for Wastewater Treatment

1993 ◽  
Vol 28 (7) ◽  
pp. 243-250 ◽  
Author(s):  
Y. Suzuki ◽  
S. Miyahara ◽  
K. Takeishi
Keyword(s):  
Wastewater Treatment ◽  
Energy Consumption ◽  
Oxygen Transfer ◽  
Transfer Rate ◽  
Oxygen Supply ◽  
Oxygen Transfer Rate ◽  
High Energy ◽  
High Rate ◽  
N Removal ◽  
High Energy Consumption

Gas-permeable film can separate air and water, and at the same time, let oxygen diffuse from the air to the water through the film. An oxygen supply method using this film was investigated for the purpose of reducing energy consumption for wastewater treatment. The oxygen transfer rate was measured for the cases with or without biofilm, which proved the high rate of oxygen transfer in the case with nitrifying biofilm which performed nitrification. When the Gas-permeable film with nitrifying biofilm was applied to the treatment of wastewater, denitrifying biofilm formed on the nitrifying biofilm, and simultaneous nitrification and denitrification occurred, resulting in the high rate of organic matter and T-N removal (7 gTOC/m2/d and 4 gT-N/m2/d, respectively). However, periodic sloughing of the denitrifying biofilm was needed to keep the oxygen transfer rate high. Energy consumption of the process using the film in the form of tubes was estimated to be less than 40% of that of the activated sludge process.

scholarly journals Polymer–Lipid Pharmaceutical Nanocarriers: Innovations by New Formulations and Production Technologies

Pharmaceutics ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 198
Author(s):  
Sabrina Bochicchio ◽  
Gaetano Lamberti ◽  
Anna Angela Barba
Keyword(s):  
Energy Consumption ◽  
Membrane Permeability ◽  
High Energy ◽  
Delivery Systems ◽  
Hybrid Nanoparticles ◽  
Industrial Implementation ◽  
Production Technologies ◽  
Industrial Level ◽  
High Energy Consumption ◽  
Modern Technologies

Some issues in pharmaceutical therapies such as instability, poor membrane permeability, and bioavailability of drugs can be solved by the design of suitable delivery systems based on the combination of two pillar classes of ingredients: polymers and lipids. At the same time, modern technologies are required to overcome production limitations (low productivity, high energy consumption, expensive setup, long process times) to pass at the industrial level. In this paper, a summary of applications of polymeric and lipid materials combined as nanostructures (hybrid nanocarriers) is reported. Then, recent techniques adopted in the production of hybrid nanoparticles are discussed, highlighting limitations still present that hold back the industrial implementation.

scholarly journals High energy consumption or low economic growth?

Nature ◽  
1978 ◽  
Vol 273 (5664) ◽  
pp. 587-587
Author(s):  
L. G. BROOKES
Keyword(s):  
Economic Growth ◽  
Energy Consumption ◽  
High Energy ◽  
High Energy Consumption

scholarly journals A lightweight magnetic gripper for an aerial delivery vehicle: design and applications

ACTA IMEKO ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 61
Author(s):  
Giuseppe Sutera ◽  
Dario Calogero Guastella ◽  
Giovanni Muscato
Keyword(s):  
Energy Consumption ◽  
Permanent Magnets ◽  
High Energy ◽  
Vehicle Design ◽  
Delivery Vehicle ◽  
Delivery Service ◽  
Remote Areas ◽  
Different Types ◽  
Robot Systems ◽  
High Energy Consumption

<p>In recent years, drones have become widely used in many fields. Their vertical flight capability makes these systems suitable for carrying out a variety of tasks. In this paper, the delivery service they provide is analysed. The delivery of goods quickly and to remote areas is a relevant application scenario; however, the systems proposed in the literature use electromagnets, which affect the duration of the flight. In addition, these devices are heavy and suffer from high energy consumption, which reduces the maximum transportable payload. This study proposes a new lightweight magnetic plate composed of permanent magnets, capable of collecting and positioning any object as long as it has a ferromagnetic surface on the top. This plate was developed for the Mohamed Bin Zayed International Robotics Challenge 2020, an international robotics competition for multi-robot systems. Challenge two of this competition required a drone capable of picking up different types of bricks and assembling them to build a wall according to an assigned pattern. The bricks were of different colours and sizes, with weights ranging from 1 to 2 kg. In light of this, it was concluded that weight was the most relevant specification to consider in drone design.</p>

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