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Online since: February 2013
Authors: Zeng Feng Yan, Zhi Wei Wang, Zhan Wei Wang
By the investigation of the performances of heat transfer between refrigerant and water in condenser/evaporator and flow resistance in water side, whether the non energy saving operating faults in water side or not can be identified.
In summer, the reclaimed water is taken as cooling water flowing through condenser, while the user side water is the chiller water for building cooling flowing through evaporator.
The rating flow rate of chilled water pump is 47 m3/h, the testing flow rate of cooling water pump on ultrasonic flow rate meter is 36 m3/h.
The flow mode of cooling water(reclaimed water) belongs to internal flow inside tube, while the flow mode of chilled water belongs to external flow outside tube.
For plant 2, the fouling of the condenser and cooling tower should be entirely removed, and all kinds of function parameters of the compressor should be carefully checked and the motive parts of the compressor should also deeply maintained by professional staff.
Online since: May 2011
Authors: Yu Wang, Pan Han, Jie Yang, Ya Li Liu, Run Ping Han
College of Henan Architectural Professional Technology, Zhengzhou 450007, China aemail: yinghuawangyu@sohu.com, bemail: xhanpanx@163.com, cemail: yangjie6532@163.com, demail: yali1986_2006@126.com, eemail: rphan67@zzu.edu.cn Keywords: Zeolite, Methylene blue, Adsorption, Microwave irradiation Abstract: Microwave heating was efficient and the regeneration time was shortened compared to conventional thermal heating.
All working solutions were prepared by diluting the stock solution with distilled water to the desired concentration.
A series of such conical flasks was then shaken at a constant speed of 100 rpm in a shaking water bath with temperatures 298 K.
Online since: October 2011
Authors: Qing Juan Meng, Jing Sheng Qiao, Wei Hua Ma
For years, dynamic compaction method was widely used in construction, water conservancy, transportation, ports and petrochemical engineering foundation reinforcement.
Table 1 Soil physical mechanics index densityγ [g/cm3] Water content ω % Internal friction Angle Φ [º] Cohesion C [kPa] Compression coefficient α1-2 void ratio e0 Compression modulus ES1-2 [MPa] 1.5 4.4 29.44 3.09 0.15 0.65 6.7 Similar ratio and ramming energy The geometry similarity ratio is 1:25, four kinds ramming energy were used(Rammer weighs 30 kg, fall distance respectively was 2m, 1 m, 0.5 m, 0.2 m, and the ramming energy Respectively is 9375, 4687.5, 2343.75, 1000).
Building vibration engineering manuals[M].Beijing: China engineering construction standardization association construction vibration professional committee,2002:784
Online since: June 2014
Authors: Qing Bin Cui, Hong Fei Luo, Jian Cheng Wang, Jie Lei
This process belongs to category of high-speed crash, it need professional high-speed crash analysis software to analysis, now we use explicit dynamics to analysis this process.
ANSYS/LS-DYNA Kinetic methods of analysis[M], China Water Conservancy and Hydropower Press, 2005 [2] Pu Guang-yi.
ANSYS Workbench 12 Tutorial and Examples of Foundation [M],China Water Conservancy and Hydropower Press, 2010 [3] Ge Teng, Jia Zhi-hong, Zhou Ke-dong.
Online since: January 2012
Authors: Ying Ning Hu, Jun Lin, Jie Wen Wu, Jing Sheng Liu, Tong Lin, Shuang Li
Ground source heat pump incubator adopts three-level distributed heating way, the heating condenser consists of three parts: 1) Main heating condenser, which includes copper tube on the top and the sides’ wall of incubator and fins, that is the first level heating condenser; 2) Fresh air preheated condenser, which is made up of copper tube between fan blades and egg rack, that is the second level heating condenser; 3) Thermal storage condenser, which consists of heat storage water tank and internal copper tube, which is the third level heating condenser.
Fig. 4 Distribution mode of finned condenser Fig. 3 Structure of finned condenser 1, 2, 3, 4 — finned condenser ;V1, V2, V3, V4 — three-way valve 2.3.2 The design of thermal storage condenser As shown in Fig.5, the function of thermal storage water tank is in order to extend the holding time of incubator.
The dimension of water tank is 2000 mm and 1600 mm and 70 mm, a thickness of 5 mm.
Fig.5 Thermal storage water tank 1 water tank,2 copper tube 2.4 The Design of Buried Tube Heat Exchanger The buried tube heat exchanger is the heat absorbing device of incubator; it is made up of the copper tube direct buried in soil.
Fig. 6 Buried tube scheme of evaporator 3 Experiments and Results Analysis 3.1 The Purpose of Experiments In order to test whether the effect of incubation and performances of incubator meet industry standards and requirements. 3.2 Experimental Materials The duck eggs are from a professional hatchery in Nanning Angie.
Online since: March 2020
Authors: Munish Gupta, Vishal S. Sharma, Gurraj Singh
Sharma3,c 1School of mechanical engineering, Lovely Professional University, Phagwara, India 2Mechanical Engineering Department, Chandigarh University, Chandigarh, India 3IP Engineering Department, Dr.
Moreover, the volume of the work related to the use of nano particle based coolants is much lesser as compared to the work with other water based coolants.
For the first variable (M1), the lubricant used was Rhenus FU60 water miscible synthetic ester based oil.
It was mixed in water with a fixed concentration of 5% by volume.
Yang, “The study on lubrication action with water vapor as coolant and lubricant in cutting ANSI 304 stainless steel,” Int.
Online since: April 2014
Authors: Xiang Liu
The so-called “Negative Yin and embrace Yang” mean to make the living house with mountain and near the water as the ideal home.
So the mountain live by water, vegetation shows prosperous, beauty showed by cloud.”
So the mountain, water, flower and woods show a great significance in landscape architecture.
Such as: Bird's Nest, Water Cube and other Olympic museum.
Modern building professional design tends to be more user-friendly design, the program, will have human, natural, and other factors.
Online since: January 2014
Authors: De Liang Zhu, Heng Gan Li
In addition, the surface water in the landslide was removed.
The other supporting emergency response operations involved covering the cracks with rammed earth and initiating the emergency response investigation and professional monitoring assignments.
The drainage ditch prevented surface water from the higher terrain surrounding the landslide from flowing into the landslide body.
To accommodate emergency response construction operations, professional monitoring and early warning systems for landslides were provided and 18 specialized monitoring points were installed.
China Water & Power Press, Beijing (2010).
Online since: September 2011
Authors: Ying Xia Li, Le Hua Wang, Jia Cheng Wang, Min Zhu, Jian Wu Li, Jian Rong Li
Introduction Currently many large-scale water conservancy and hydropower engineering involves the stability problems of the high slope excavation unloading; however the slope stability is always the research hotspots which is hard to perfectly solve.
The underground water level on both sides are subdued, the average hydraulic gradients of groundwater in left bank are less than 2°.
The finite element analysis uses professional calculation software FLAC3D as the platform, which is very suitable to do the finite element analysis for geotechnical engineering [4-5].
(In Chinese) [3] Jianlin Li:Unloading Rock Mass Mechanics (Beijing:China Water Power Press, 2003) (In Chinese) [4] Yuming Chen, Dingping Xu: FLAC/FLAC3D Foundation and Engineering Example (Beijing:China Water Power Press, 2008) (In Chinese) [5] Weixing Qin,Weiming Wang and Hong Zheng: China's Rural Water Conservancy and Hydropower (2008), P.91.
(In Chinese) [6] Jianlin Li etc: Wuhan Water Conservancy and Hydropower University (journal of Yichang) (2000), P.191.
Online since: December 2014
Authors: An Liang Hu
So usually the excreted fuel gas needed cooling first, then after water filtration, it was delivered to the burner side of the upgrading devices.
The vapor was produced from the heat recovery and coal gasification devices, as well as the vapor generator in the recycle circuit of cathode air to form a steam-water circulation.
In early stage, the development of fuel cell focused on professional applications like military and space, and kw level distributed generation.
Among all the fuel cells, the alkaline fuel cell(AFC) developed the fastest [5], mainly for space missions including providing power and drinking water for space shuttles.
Integration of several ways of power generating to improve power generating efficiency: take fully advantage of sea-water-battery (This type of battery uses endless sea water as electrolyte, and uses O2 in the air to oxidize aluminum and to produce electric current.
Showing 1981 to 1990 of 3724 items