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Introduction The last 20 years, steel fiber has been applied widely in the professional fields of civil engineering, water conservancy and construction step by step, owning to the excellent properties of high strength, durability, ductility and so on.
(a) in water (b) in a NaCl solution Fig.1.
Weight loss in concrete subjected to freeze-thaw cycles in water or in a NaCl solution.
(a) in water (b) in a NaCl solution Fig.3.
Splitting Tensile Strength loss in concrete subjected to freeze-thaw cycles in in water or in a NaCl solution.

When nanofibers could be made last century, its filtration potential was expected in a lot of professional fields, such as building industry, medical industry and Environmental protection industry.
At first, polyvinyl alcohol (average MW 85,000–150,000 g/mol) was dissolved in hot water beyond 90℃, and the concentration was equal to 8% (w/w).

Introduction Interest in the professional community of aggregates based on secondary raw materials is increasing.
The additional water quantity is calculated on the basis of recycled aggregate water absorption in prescribed time [2].
The amount of water in the mixture is indicative only.
The probable cause of these results may be, for example high water/cement ratio.
The probable cause of these results may be, for example high water/cement ratio.

Effects of the two control parameters on knowledge sharing behaviors and strategies were simulated with NetLogo, a professional simulation software, and related suggestions were put forward based on the results, which would enhance the tacit knowledge sharing among organizations.
As a matter of fact, explicit knowledge is merely the “islands” above the water.
With the advent of knowledge economic society, people start to draw attention to the enormous tacit knowledge under the water.

Performance responses of all 17 sets of gas stoves and 6 kinds of water heaters were measured under 10 gases using in GuangDong province.
Since customers rarely adjusted their stoves in such a professional way, the flame according to this principle can be considered as the best performance under “adjustment gas”.
Fig.2 Gas appliances experiment performance of thermal efficiency The test results of water heaters show that: the change is generally about 4%~5%.
CO Emission According to Chinese national standard GB 16410-2007 and GB 9632-2001, CO emission of gas stoves can’t exceed 500ppm, and water heaters must be lower than 600ppm.
But CO emission of water heater is mainly influenced by flame characters and becoming worse with the raise of Wobbe Index.

At the same time, to create conditions, for the heating, ventilation, air conditioning and other professional energy-saving design to leave adequate leeway. 1.2 Ecological residential energy-saving design comprehensive benefits can be realized, the economic evaluation is to ensure Through economic evaluation on the ecological building design, not only can meet the requirements of the use of the occupants, but also can realize the comprehensive benefits of ecological energy saving residence, at the same time，to promote the national economy healthy development.
A total construction area 130446.3 m2, Among them: commercial area 5717.77 m2 , residential area 11029.15 m2, community housing area 300 m2, Property housing area 348 m2, underground garage area 13778.38 m2and latrine area 53 m2, at the same time, supporting the building, road traffic, water supply, power supply and other utilities. 2.2 Analysis of ecological residential technology measures 2.2.1Building energy-saving design 1, Site planning Construction general layout and single area plane design，make the best use of sunlight in winter to keep warm, reduce summer solar radiation, and make full use of natural ventilation.
Based on the natural ventilation, take appropriate corrective actions, for example: the rational layout of natural air inlet position; the air inlet is provided with a filtering measures of natural ventilation; in the natural wind inlet, measures regulating switch setting,in order to improve the effect of natural ventilation. 2.2.3 Water-saving measures 1, Water supply system is the current product standard pipe, select the smooth, small resistance supply pipe, in order to reduce the consumption of fluid power pipe . 2, Public building water supply and use of water-saving devices, and to guide household the selection of water-saving .
Water tap use ceramic valve core sealing, restrict water flow water injection well choke; Prohibit the use of a flushing water closet is larger than 6L; Toilet uses infrared induction water tap and induction type flushing valve for toilet urinal, stool valve. 3, Optimal design of water supply engineering, Strengthen construction management, to reduce the network loss rate. 4, The high-rise buildings more than 5 layers of water with frequency conversion and constant pressure water supply, Can greatly reduce energy consumption, Saving energy saving more than 25%. 2.2.4 Solar energy utilization Make full use of solar energy resources, 1 square meters of solar energy water heater every alternative to conventional energy of standard coal 200kg.
First of all , from the solar hot water system and residential building design began with at the same time, to solve the layout and installation of solar, to guarantee the building load-bearing, waterproof function is not affected, and full consideration of solar capacity heat exchanger, anti hail and snow load.

This claim is justified in the operation of various factors, as much those relative to the esthetic and ideological motivations of the Modernist Movement in Brazil, as those linked to the programmatic operation of these architects in two professional sectors; that of the renovation and conservation of the architecture of the Baroque Mineira and the employment and use of its vocabulary in the production of our first modern architecture.
In the case of the wainscot, there was significant loss of paint due to water action and the deterioration of the supporting wood elements.

Shallow ground temperature region evaluation must be based on the following data: characteristics of regional rocks and formation, the regional geological structure especially since the Cenozoic tectonic activities, regional hydrological data (including quantity of water, water temperature, water quality and its dynamic characteristics), characteristics of regional geothermal field, and the physical properties and thermal physical properties of the various lithology under the condition of different water content. 2.
Regional groundwater burying conditions, water yield property, water quality and formation temperature are the key elements which affect the potential and manners of shallow geothermal energy’s development.
In general, the work of regional hydrology geological condition evaluation mainly includes the following contents: (1) For aquifer (Group) division, finding out the different aquifer and aquifuge spatial distribution and law of thickness change. (2) Finding out the groundwater burial conditions, evaluating hydrogeological parameters of different aquifer (permeability, water yield property, gushing water and recharge rate and so on) and the laws of space changing. (3) Evaluating quality of groundwater of each aquifer, analyzing the chemical characteristics and variation laws of the regional groundwater. (4) Evaluating the pollution of underground water, the distribution characteristics of salt water, and contact relationship between salt water and fresh water. (5) Grasping the basic ground water (water level, water quality and temperature) dynamic change rule. (6) Analysis of groundwater recharge, runoff, discharge conditions For specific ground source heat pump energy mining engineering
Because the pumping well extracts the original groundwater, temperature change is small, the focus should be on monitoring and evaluation of change of the temperature field around the recharge well, the temperature recovery after the shutdown, interaction of pumping and recharging well, long-term monitoring of the recharge water quality, and evaluation of water quality changes
Water Source Heat Pump and Energy - saving [ J ].

Supplementary chilled water is supplied by existing electrical chillers located in Building 1 andin case chilled water is not required; the rejected heat would be used to generate hot water.
Option 1- Benchmark [6] The benchmark includes 3 sets of 1MW internal combustion (IC) gas-engine generators and double-effect absorption chillers to supply electricity, hot water and chilled water to buildings 1,2,10 and the new Broadway building.
Finally, the thermal energy in the oil circuit would provide heating for the domestic hot water facilities.
The Kalina Cycle is a Rankine Cycle with a working fluid of a mixture of ammonia and water( typical ratio of 1:0.43).
Horlock, Cogeneration: Combined Heat and Power, First edition, Pergamon,UK, (1987) [2] Ahluwalia V., 1997, "Co-generation Case Study at Sydney Institute of Technology", StateProjects, professional services arm of NSW Public Works, [3] M.

In recognition of our local industries’ need for professional engineers with engineering practical ability, real projects based on industry application provide a means to teach students many of the skills they need to succeed after graduation [1-2] .Students can see trees of application in process control using PLCs as well as a whole forest by completing the project step by step.
This kind of design experience may be changed to design other similar control system used in other industry field such as water process plant.
High pressure water descaling system has two basic running states: unloading with low pressure and descaling with high pressure.
System start with low pressure unloading state, a pump operate at low frequency , the unloading valve is open, water from high pressure pump returns to the high water tank through the unloading valve and thus no-load unloading is realized.
The water is returned to the tank through the unloading valve.