China
Africa
Explore chapters and articles related to this topic
Use of Conventional Manufacturing Techniques for Materials
Published in T. S. Srivatsan, T. S. Sudarshan, K. Manigandan, Manufacturing Techniques for Materials, 2018
T. S. Srivatsan, K. Manigandan, T. S. Sudarshan
This is a process that is used to produce internal threads in the case of a nut. The cutting tool, referred to as a tap, is a hardened screw made from tool steel. The lengthwise grooves on the tool are referred to as flutes. The tool is milled or ground across the threads. The flutes form a series of teeth that provides room for the chip along its entire length. A tap is used to cut threads in a plain hole that is drilled somewhat larger than the minor diameter of the thread. When the tap is turned into the hole, the teeth cut into the wall of the hole and remove the material to form threads having the same pitch as the threads on the tap. The most common types of taps used are (1) solid tap, (2) shell tap, (3) expansion tap, (4) inserted chaser tap, and (5) collapsible tap. It is the solid tap that is chosen and used in a large majority of tapping operations.
Two-state systems
Published in J. R. Gibson, Electronic Logic Circuits, 2013
Which of the following contain at least one component which is a discrete-state system? A door lock.A water tap (control valve).A pendulum clock.A thermostat (temperature control) for an oven or a water heater.A controller for traffic signals at a road junction.The braking system of a bicycle or car.
Analysis of Crystallization Fouling Durability of Novel Heating Elements for Electric Water Heating
Published in Heat Transfer Engineering, 2022
Alexander Janzen, Eugeny Y. Kenig
In contrast to other studies, e.g., [8–11], the fouling tests were conducted in a contaminated fluid. For tap water and ground water, the level of supersaturation can be descripted with the saturation index (Eq. 6). The saturation indices are calculated with the commercial hydrogeochemical calculation program PHREEQC [13]. To determine the saturation index and the influence of the test fluid, a tap water sample was taken before and after each test, followed by tap water analysis. A total of 60 tap water analyses were evaluated, and the arithmetic mean was used as a reference value for the different tap water components. Table 2 contains the data obtained from the tap water analysis.
Workability, strength, and shrinkage of ultra-high-performance seawater, sea sand concrete with different OPC replacement ratios
Published in Journal of Sustainable Cement-Based Materials, 2023
Shameer Saleh, Ying-Lei Li, Ehab Hamed, Aziz Hasan Mahmood, Xiao-Ling Zhao
Natural seawater and sea sand were collected from Malabar beach of Sydney, NSW, Australia for fabricating UHPC. The cations and anions in seawater were detected through inductively coupled plasma – optical emission spectrometry (ICP-OES) and ion chromatography (IC), respectively. Table 2 compares the ion concentrations of the natural seawater used in this study with that of the world average values [29]. The seawater collected from Malabar beach was found to be reasonably close to the corresponding world average values. Tap water was used in mixing and curing of tap water river sand and tap water washed Sydney beach sand UHPC.
Research on combined heat and power system based on solar-proton exchange membrane fuel cell
Published in International Journal of Green Energy, 2022
Jing Zhang, Yan Lu, Guangcai Xie, Sheng Li, Zhongmin Wan
where is the ratio of heat recovered by the secondary fluid (tap water); is the mass flow rate of the hot water (kg/s);is the specific heat of the secondary fluid (tap water); is the water temperature difference (K).