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.

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.

scholarly journals A small shipborne desalination plant based on the principle of loop heat pipe

2020 ◽  
Vol 165 ◽  
pp. 01003
Author(s):  
Tongyao Miao ◽  
Zheng Fang ◽  
Lingzhi Feng ◽  
Yunhui Peng
Keyword(s):  
Energy Consumption ◽  
Heat Pipe ◽  
Fresh Water ◽  
High Energy ◽  
Loop Heat Pipe ◽  
Seawater Desalination ◽  
Low Energy Consumption ◽  
New Type ◽  
Emergency Equipment ◽  
High Energy Consumption

As is well-known, the problem of fresh water has always been a major problem for ocean navigation. The existing marine seawater desalination equipment generally has the disadvantages of large volume, high energy consumption and easy to pollute the environment. Based on this, we proposed a small seawater desalination system based on phase change to enhance heat transfer, which realized low temperature and low energy consumption by using the loop heat pipe technology, a new type of heat sink type spoiler evaporator and an integrated equal-heat plate fin condenser. The device is suitable for islands, fishing boats and other complicated areas where power is scarce and fresh water resources are scarce. It can also be used as fresh water emergency equipment for large ships, saving energy and being portable.

scholarly journals Emerging Tunnel FET and Spintronics based Hardware Secure Circuit Design with Ultra-low Energy Consumption

2021 ◽  
Author(s):  
Aditya Japa ◽  
Subhendu K. Sahoo ◽  
Ramesh Vaddi ◽  
Manoj Kumar Majumder
Keyword(s):  
Energy Consumption ◽  
Lower Energy ◽  
High Energy ◽  
Spin Transfer Torque ◽  
Low Energy ◽  
Sense Amplifier ◽  
Tunnel Fet ◽  
Low Energy Consumption ◽  
Static Power ◽  
Channel Lengths

Abstract Present CMOS technology with scaled channel lengths exhibited higher energy consumption in designing secure electronic circuits against hardware vulnerabilities and breaches. Specifically, CMOS sense amplifier based secure differential power analysis (DPA) countermeasures at scaled channel lengths show large energy consumption with increased vulnerability. Additionally, spin transfer torque magnetic tunnel junction (STT-MTJ) and CMOS based logic-in-memory (LiM) cells demonstrate high energy consumption due to the large write current requirement of STT-MTJ and poor MOS device performance at scaled channel lengths. This paper for the first time leverages emerging tunnel FET (TFET) steep-slope device characteristics and compatible non-volatile STT-MTJ devices for enhanced hardware security with ultra-low energy consumption at lower supply voltages. TFET based sense amplifier based logic (SABL) gates have been proposed that achieve 3× lower energy consumption compared to Si FinFET SABL designs. Further, utilizing TFET SABL gates, TFET Pride S-box is designed that exhibits higher DPA resilience with 3.2× lower energy consumption compared to FinFET designs. With resulted lower static power consumption, TFET SABL based crypto systems can show lower vulnerability to static power side-channel attacks. Besides, proposed STT-MTJ and TFET LiM gates achieves 4× lower energy consumption compared to STT-MTJ and FinFET designs. Moreover, these gates have been explored in logic encryption/locking technique that shows 3.1× lower energy consumption compared to STT-MTJ and FinFET based design.

Harmonic Analyzing and Filtering of Motor Discrete Variable Frequency Soft Starter

2015 ◽  
Vol 713-715 ◽  
pp. 1401-1404
Author(s):  
Xing Yu Song ◽  
Jing Chen ◽  
Qing Wang ◽  
Shi Jie Deng
Keyword(s):  
Energy Consumption ◽  
High Energy ◽  
Signal Interference ◽  
Variable Frequency ◽  
Discrete Variable ◽  
Soft Starter ◽  
Low Energy Consumption ◽  
Heavy Loads ◽  
High Energy Consumption ◽  
Filtering Approach

A large number of harmonic is mainly produced by with the discrete variable frequency soft starter. The harmonic during the motor soft starting is characterized by the high energy consumption and signal interference. Therefore, harmonic analyzing and filtering of motor discrete variable frequency soft starter is presented in this paper to achieve low energy consumption and ensure the motor soft starting stably. The following works have been done in the study: introduce the reason of harmonics appearance, analyze the harmonic, and present the filtering approach. The motor soft starter developed with this filtering approach has been successfully applied to filter out harmonic and to improve the starting performance when the motors draw the heavy-loads. It saves energy, stabilize the voltage of the power supply network.

scholarly journals Energy-Aware VM Initial Placement Strategy Based on BPSO in Cloud Computing

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Xiong Fu ◽  
Qing Zhao ◽  
Junchang Wang ◽  
Lin Zhang ◽  
Lei Qiao
Keyword(s):  
Cloud Computing ◽  
Energy Consumption ◽  
High Energy ◽  
Binary Particle Swarm Optimization ◽  
Vm Placement ◽  
Energy Aware ◽  
Low Energy Consumption ◽  
Initial Placement ◽  
And Storage ◽  
High Energy Consumption

In recent years, high energy consumption has gradually become a prominent problem in a data center. With the advent of cloud computing, computing and storage resources are bringing greater challenges to energy consumption. Virtual machine (VM) initial placement plays an important role in affecting the size of energy consumption. In this paper, we use binary particle swarm optimization (BPSO) algorithm to design a VM placement strategy for low energy consumption measured by proposed energy efficiency fitness, and this strategy needs multiple iterations and updates for VM placement. Finally, the strategy proposed in this paper is compared with other four strategies through simulation experiments. The results show that our strategy for VM placement has better performance in reducing energy consumption than the other four strategies, and it can use less active hosts than others.

Design of an Intelligent Bean Sprout Incubator Based on MSP430 SingleChip Computer

2011 ◽  
Vol 186 ◽  
pp. 105-109
Author(s):  
Han Ying Huang ◽  
Tao Yin ◽  
Si Ming Zhao ◽  
Shan Bo Xiong ◽  
Xiao Yu Li ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Temperature Control ◽  
High Energy ◽  
Slow Heating ◽  
Single Chip ◽  
Fast Heating ◽  
Bean Sprout ◽  
Single Chip Computer ◽  
Low Energy Consumption ◽  
High Energy Consumption

At present, there exist a lots of problems in general bean sprout incubators such as uneven spray, water wasting, slow heating, high energy consumption, inaccurate temperature control and so on. To solve these problems, an intelligent bean sprout incubator has been developed based on MSP430 Single Chip Computer. The incubator has advantages of humidity uniformity, water saving, fast heating, low energy consumption, and precise temperature control.

scholarly journals Experimental Validation of a Low-Energy-Consumption Heating Model for Recirculating Aquaponic Systems

Energies ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1958
Author(s):  
Anh Tuan Le ◽  
Liang Wang ◽  
Yang Wang ◽  
Ngoc Tuan Vu ◽  
Daoliang Li
Keyword(s):  
Energy Consumption ◽  
Thermal Energy ◽  
Numerical Models ◽  
Electrical Energy ◽  
Low Energy ◽  
Energetic Cost ◽  
Low Energy Consumption ◽  
The Difference ◽  
Fish Tank ◽  
Tank Water

Electrical energy is the highest energetic cost in recirculation aquaponic systems (RASs), especially for fish-tank water. Therefore, reducing energy consumption is one of the challenges in developing RAS models. In this study, eleven experimental setups, based on numerical models from an earlier investigator, were built to investigate. Among them, three additional cases (cases 9–11) investigated the transient discharging energy efficiency of thermal energy storage (TES). Cases 9–11 considered three temperature levels, namely, 65–75 °C, 71–81 °C, and 81–87 °C, with a mass flow rate of 0.166 kg/s. The results show that when heating 3.4 m3 of fish tank water from 24.5 °C to 28 °C, the average temperature error of the tank water was between 1.2% and 3.4%. The difference in the heat transfer rate was within ±4.2%. The error in the thermal efficiency was below 8.0%. The error range of the total required thermal energy was from 6.4% to 11.5%. Cases 9–11 used 5.6%, 6.4%, and 7.2% of the thermal energy of the TES tank, respectively. The electrical energy consumption was low compared to the thermal energy of the fish tank water received from the TES unit. Therefore, the proposed low-energy-consumption heating method can replace electric heaters.

scholarly journals Biowastes as a Potential Energy Source in Africa

2021 ◽  
Author(s):  
Deodatus Kazawadi ◽  
Justin Ntalikwa ◽  
Godlisten Kombe
Keyword(s):  
Growth Rate ◽  
Energy Consumption ◽  
Population Growth ◽  
Energy Policy ◽  
Energy Demand ◽  
Population Growth Rate ◽  
High Energy ◽  
Low Energy ◽  
Energy Dependency ◽  
Low Energy Consumption

High population and industrialization have brought the need for a reliable and sustainable source of energy and protection of the environment. Although Africa has a low energy consumption capacity (3.4% of the global share in 2019), its high population growth rate and industrialization predict high energy demand in the future. Reliable and available energy resources are required to protect the environment and create energy dependency. Despite Africa’s low energy consumption capacity (3.4% of global consumption in 2019), its rapid population growth rate and industrialization indicate future significant energy demand. The current high production of biowastes with high energy content and their low utilization provides an opportunity for energy dependency, crop value addition, creation of jobs, and protection of the environment. The chapter has identified that the African population of 1.203 billion in 2017 consumed 928 Mtoe of energy and this demand is expected to increase in years to come. The energy mix has been identified to depend on fossil fuels with little consideration of biowastes. The biowaste is reported to contain 20.1 TWh in 2025. Biowaste is currently underutilized, and there are few conversion methods available. Government and non-government investments have been reported to be making efforts to improve bioenergy and biowaste usage. The prevailing challenges have been low proven technologies, poor energy policy, low population knowledge, and poor investments. Biowastes use can be increased when environmental laws and legislation are tightened, energy policy strengthened and enforced, cheap and appropriate technologies are introduced, and the population Education is provided. It is expected that when biowastes are well utilized, energy will be available even in disadvantaged (remote) areas at an affordable price for the developing continent of Africa.

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