Hybrid Desiccant Cooling System Using Condensing Heat as the Regeneration Source. Part II: Energy Saving Potential

2011 ◽  
Vol 383-390 ◽  
pp. 6431-6435 ◽  
Author(s):  
Xing Han ◽  
Xu Zhang
Keyword(s):  
Energy Consumption ◽  
Cooling System ◽  
High Energy ◽  
System Model ◽  
Electrical Heating ◽  
Outdoor Air ◽  
Humidity Ratio ◽  
Air Conditioning System ◽  
Energy Saving Potential ◽  
High Energy Consumption

Based on the system model of hybrid desiccant cooling system using condensing heat as the regeneration source, the solution is given to investigate the system characteristic. The result showed that, when the outdoor air humidity ratio is below 18.5g/kg and indoor dehumidification load is below 1.5kg/h, the energy consumption of this system is lower than the enthalpy recovery air-conditioning system. If not, due to the high energy consumption of electrical heating, the desiccant wheel using condensing heat and electrical heat is not suitable for the humid areas.

scholarly journals Numerical approach to a modularized data computer room using a fresh air-cooling system

2019 ◽  
Vol 23 (4) ◽  
pp. 2421-2428
Author(s):  
Jing Ma ◽  
Yin Liu ◽  
Ren-Bo Guan
Keyword(s):  
Energy Consumption ◽  
Flow Field ◽  
Data Center ◽  
Cooling System ◽  
Numerical Approach ◽  
High Energy ◽  
Air Cooling ◽  
Air Cooling System ◽  
Resistance Performance ◽  
High Energy Consumption

A fresh air-cooling plan is proposed to deal with high energy consumption in a data center and continuous improvement of temperature resistance performance in an IT equipment. The modularized data center, which is designed to adopt outdoor fresh air-cooling method for reducing temperature, can greatly reduce the energy consumption in data center. Numerical approach to study on the distribution of flow field, temperature field and velocity field is given using the CFD software. The results show that the flow field distribution is uniform, and the temperature distribution meets the requirements of the data center system. The numerical results can be used for optimization of the modularized computer room.

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>

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.

One High Efficiency Production Line of Clinker and Slag Grinding Separately by Roller Mill in Cement Industry

2008 ◽  
Vol 58 ◽  
pp. 83-89
Author(s):  
Ning Chang Liu ◽  
Zhao Feng Li
Keyword(s):  
Energy Consumption ◽  
High Efficiency ◽  
High Energy ◽  
Cement Industry ◽  
Grinding Process ◽  
Roller Mill ◽  
Low Efficiency ◽  
Cement Grinding ◽  
Grinding System ◽  
High Energy Consumption

In cement industry, many grinding up systems are on operating now. The tradition process of tube mill grinding system is high energy consumption, so it’s low efficiency, especially in the final cement grinding process. The value and advantage of slag is recognized more and more, but it’s difficult to be grinded up. Furthermore, the disadvantage and shortages to grind up clinker compounded with slag to produce cement are obvious and adopted. The best process is to grind up slag, clinker separately. Then, these two kinds of powder are compounded by a mixer. Hereby, it introduces a design of the process to grind up clinker, slag by one roller mill.

An Overview of Different Indirect and Semi-Indirect Evaporative Cooling System for Study Potency of Nanopore Skinless Bamboo as An Evaporative Cooling New Porous Material

2021 ◽  
Vol 79 (2) ◽  
pp. 123-130
Author(s):  
I Nyoman Suprapta Winaya ◽  
Hendra Wijaksana ◽  
Made Sucipta ◽  
Ainul Ghurri
Keyword(s):  
Energy Consumption ◽  
Porous Material ◽  
Cooling System ◽  
Evaporative Cooling ◽  
Temperature Drop ◽  
High Energy ◽  
Dew Point ◽  
Air Cooling ◽  
Evaporative Cooling System ◽  
Indirect Evaporative Cooling

The high energy consumption of compressor based cooling system has prompted the researchers to study and develop non-compressor based cooling system that less energy consumption, less environment damaging but still has high enough cooling performances. Indirect and semi indirect evaporative cooling system is the feasible non-compressor based cooling systems that can reach the cooling performance required. This two evaporative cooling system has some different in construction, porous material used, airflow scheme and secondary air cooling method used for various applications. This paper would report the cooling performances achieved by those two cooling system in terms of cooling efficiency, cooling capacity, wet bulb effectiveness, dew point effectiveness, and temperature drop. Porous material used in indirect and semi-indirect evaporative cooling would be highlighted in terms of their type, size, thickness and any other feature. The introduction of nanopore skinless bamboo potency as a new porous material for either indirect or semi-indirect evaporative cooling would be described. In the future study of nanopore skinless bamboo, a surface morphology and several hygrothermal test including sorption, water vapor transmission, thermal conductivity test would be applied, before it utilize as a new porous material for direct or semi indirect evaporative cooling.

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