Search results

Adding the extraction from one piece of cooling water to test for each system monthly.
To really need to using water as refrigerant, from the selection of equipment and pipe on consideration.
To actually need use seamless steel tube, suggest seamless steel pipe installation in the secondary galvanized, such ability assure the water quality.
To the operation management of air conditioning should first establish the cleaning plan, to the ventilating tube and recycling water pipe with periodic cleaning, clean air inlet of filters, filter, cleaning in the duct ventilation and circulating water pipes, often unpick and wash water pipeline strainer.
Second often detect the indoor air quality, recycling water quality, for the pollution to a certain extent will send for professional air conditioning clean company to clean, with advanced cleaning equipment for the whole air conditioning system do thorough cleaning.

It is used for the construction of sewage networks, water supply networks, and undercrossing works in urban areas.
The lithology of the zone comprised of soft clays and silty sands; the ground water level was determined at -6.00 m to -7.00 m from the ground surface.
The importance of professional studies and designs is emphasized in this directive.
Nowadays, tunnel construction is done with a high degree of automatic procedures and by high-skilled workers and professionals.
The capability to seal the machine protects it from the underground water pressures.

The high toxicity of various effluents to water has resulted in governments enforcing ever tougher environmental laws limiting the treatment of water and wastewater, and the elimination of such effluents from water has been a major concern of environmental professionals for many years. [2].
The reaction was stopped with the sudden addition of a large amount of distilled water.
Ismail, Desalination and Water Treatment, Thin coated adsorbent layer: characteristics and performance study, 55 (2015) 956-969
Gajbe, Journal of colloid and interface science, Adsorption and desorption studies of a water soluble dye, Quinoline Yellow, using waste materials, 284 (2005) 89-98
Celik, Water research, Adsorption of cobalt from aqueous solutions onto sepiolite, 37 (2003) 224-232

Introduction Municipal water distribution system is one of the most important urban infrastructures, to ensure its safe and stable operation is the fundamental task of water supply companies.
While pipe burst can cause a partial disruption of water supply and reduce water pressure, resulting in waste of water resources, affecting the economic and social benefits for the water supply enterprises and users.
In the news report, the date, location, repair time and influence of the burst were paid more attention, while like the pipe material, diameter and age, these relative professional information were reported less.
Nearby the large water users and bridges can also cause pipe burst.
More than 10 million people can’t use water. http://news.sina.com.cn/c/2011-04-21/ 015322329065.shtml 2011-8-25 8:00 Renshou water supply company, Meishan, Sichuan / It caused a disruption of big areas, nearly 20 million people can’t use water as usual. http://sc.sina.com.cn/news/sc-ms/ 2011-08-26/259-64693.html 2011-4-8 Jiulongpo microelectronics industry park, Chongqing Careless construction It threatened 30 million people water use. http://news.163.com/11/0409/09/ 716JRL0C00014AEE.html 2011-10-17 13:38 Xiang Fu water plant Overpressure It reduced water pressure.

This equipment could be used to salvage the aquatic plant in the rivers and lakes, high-end residential scenic pond, freshwater ponds and other water environment.
This equipment uses the aquatics hub cutter, which combining with the spiral transportation, to cut the water grass and delivers the water grass to the grass collecting container in the cabin through spiral transportation.
Aquatics hub cutter is designed as a cylinder-shaped with three blades outside of the hub, and it is fixed on a rotating hub[2].The model of an aquatics hub cutter was set by professional software SolidWorks (shown in Fig.1).
CFX pressure shows the hydrodynamic pressure on the surface of the cutter with considering the compressibility and incompressibility of water.
For water compressibility, the hydrodynamic pressure value is increased, and the axial distributions of hydrodynamic pressure are obvious different.

When carbon dioxide is dissolved into water, carbonic acid is formed.
Electrochemical corrosion may be generated when metal is in water.
However, with the development of oil and gas fields, the water cut is gradually increased.
A downhole wet carbon dioxide environment is composed of carbon dioxide and formation water.
References [1] Wan Renpu: Advanced Well Completion Engineering (Gulf Professional Publishing, U.S. 2011)

The concrete structures and durability of concrete durability study group Professional Committee was set up in 1991 and 1992 [5].
Soft water.
Water is nature’s most abundant storage fluid.
Because of the reason that the concrete is a porous solid alkaline materials, in the water transmission, including the deterioration of concrete due to prolonged exposure to water erosion caused by material flaking slow physical deterioration and the permeability of concrete, water pH and water ion concentration of the chemical species and controlled degradation .
While containing a large amount of free water and capillary water, saturated slurry further contains adsorbed water.

Water based lubricant thus has inferior lubricity.
An alternative to O/W emulsions is surfactant-water solutions, where the small amount of oil normally presented is dispensed with, leaving only a surfactant dissolved in water as additives [5].
A surfactant molecule contains both a water insoluble (oil soluble component) and a water soluble component.
Surfactants reduce the surface tension of water by adsorbing at the liquid-gas interface.
Dowson: History of tribology (Professional Engineering Publishing, London 1998)

The survey result indicated that the enterprises manufacturing solar equipment in Jiaxing city had formed a complete industrial chain, including manufacturing Semi-finished product glass tube,all-glass evacuated collector tube,water storage tank, waterstop ring, solar stand, solar getter,solar water heater,solar water heater system et al.
Since then, With development of 17 years, Jiaxing had formed the solar energy water heater industrial cluster.
The traditional solar water heater has been unable to meet the city residential building on the solar energy utilization needs, and solar hot water projects can make up for the traditional solar energy water heater; Solar water heating engineering is designed and installed on the basis of specific construction features and the residents of the water demand, which requires the solar energy enterprises reserve a considerable number of engineering and technical personnel.
In order to reduce solar hot water project design and installation cost, I think that the solar hot water project must be made standardization, modularization, which help the solar energy enterprises to seize the market of solar energy solar hot water project, help the solar energy enterprises make effectively after-sale service, help solar hot water projects be widely used; Building Integrating Solar Energy Technology Innovation [2][3][4] Building integrating solar technology is still only at a conceptual stage in the solar industry.
In conclusion, Building integrated solar energy need solar energy enterprises to attract a lot of professional personnel such as architects, solar energy engineers, to research on solar building components.

In winter, the heating period runs from mid -November through mid - March the next year, with indoor temperature between 18～22˚C,the temperature of groundwater in circulation at 16-18˚C,and reinjection water at 9～12˚C ; in summer, the refrigeration period runs from July through September, with indoor temperature at 18～24˚C,the temperature of groundwater at 16-18˚C, and reinjection water between22～24˚C.
Currently, shallow geothermal energy utilization projects in Western Hot Spring City, the office building of Municipal Water Resources Preservation Administration , and Huanghe Ecological Park ,etc. stand out as the relatively efficient ones.
According to their bury depth, the ground water aquifers here can be divided roughly into two kinds: one is shallow-bed groundwater aquifer, whose buried depth is less than 80m; the other is generally called middle –deep-bed groundwater aquifer, whose buried depth exceeds 80m.
As the middle –deep –bed groundwater constitutes an vital part of the water resources of Kaifeng City, only the above shallow groundwater can be used for shallow geothermal energy development.
It is recommended that professional monitoring stations should be set up in the areas suitable for groundwater heat exchange systems and those areas suitable for pipe heat exchanger systems respectively.