Thermodynamics and Energy

1805 Submissions

[10] viXra:1805.0385 [pdf] submitted on 2018-05-22 09:55:06

Computational Statistical Mechanics

Authors: George Rajna
Comments: 57 Pages.

It may sound like the stuff of fairy tales, but in the 1950s two numerical models initially developed as a pet project by physicists led to the birth of an entirely new field of physics: computational statistical mechanics. [35] New research gives insight into a recent experiment that was able to manipulate an unprecedented number of atoms through a quantum simulator. This new theory could provide another step on the path to creating the elusive quantum computers. [34] Chinese scientists Xianmin Jin and his colleagues from Shanghai Jiao Tong University have successfully fabricated the largest-scaled quantum chip and demonstrated the first two-dimensional quantum walks of single photons in real spatial space, which may provide a powerful platform to boost analog quantum computing for quantum supremacy. [33] To address this technology gap, a team of engineers from the National University of Singapore (NUS) has developed an innovative microchip, named BATLESS, that can continue to operate even when the battery runs out of energy. [32] Stanford researchers have developed a water-based battery that could provide a cheap way to store wind or solar energy generated when the sun is shining and wind is blowing so it can be fed back into the electric grid and be redistributed when demand is high. [31] Researchers at AMOLF and the University of Texas have circumvented this problem with a vibrating glass ring that interacts with light. They thus created a microscale circulator that directionally routes light on an optical chip without using magnets. [30] Researchers have discovered three distinct variants of magnetic domain walls in the helimagnet iron germanium (FeGe). [29] Magnetic materials that form helical structures—coiled shapes comparable to a spiral staircase or the double helix strands of a DNA molecule—occasionally exhibit exotic behavior that could improve information processing in hard drives and other digital devices. [28] In a new study, researchers have designed "invisible" magnetic sensors—sensors that are magnetically invisible so that they can still detect but do not distort the surrounding magnetic fields. [27]
Category: Thermodynamics and Energy

[9] viXra:1805.0241 [pdf] replaced on 2018-05-22 02:58:25

Hot Air Power Mega City Building

Authors: Zhixian Lin
Comments: 24 Pages.

This paper proposed the Hot Air Power Mega City Building which use hot air to create electric power and fresh water. And it does not require an elevator to make it work. It has efficient transportation systems which are more reliable than elevators. The transportation systems can be completely powered by electricity and with zero automobile exhaust. In order to make a Living Building work efficiently and suitable for living, this paper proposed a Standard Module. With many Standard Modules, we can make up a mega Living Building. And Hot Air Power is sustainable green power. Hot Air Power Station is not just clean, it can even clean the air and eliminate haze. Hot Air Power Station can also recycle part of the energy which has been used in the building. Hot Air Power Station uses the heat exchange reaction between hot air and cold water to generate power. To make the hot air cool down quickly and efficiently, this paper proposed the Drooping Cold Water Infiltrated Cotton Strip Array. The fresh water is a by-product of Hot Air Power Station. Hot Air Power Mega City Building has Gradient Transparent Roof which height is gradient to collect hot air and transfer them to Hot Air Power Station. Because the city can generate hot air in twenty-four hours without stop, so Hot Air Power Station will be able to generate electric power in twenty-four hours without stop also. Hot Air Power Station consumes hot air in the city, make the city cool down, and solve the problem of Heat Island Effect.
Category: Thermodynamics and Energy

[8] viXra:1805.0235 [pdf] submitted on 2018-05-11 11:09:04

Quantum Heat Engine

Authors: George Rajna
Comments: 43 Pages.

Physicists have demonstrated that energy quantization can improve the efficiency of a single-atom heat engine to exceed the performance of its classical counterpart. [27] A solid can serve as a medium for heat and sound wave interactions just like a fluid does for thermoacoustic engines and refrigerators-resulting in leak-free machines that can stay operating longer. [26] Like watchmakers choosing superior materials to build a fine timepiece, physicists at the Centre for Quantum Technologies (CQT) at the National University of Singapore have singled out an atom that could allow them to build better atomic clocks. [25] Yale physicists have uncovered hints of a time crystal—a form of matter that "ticks" when exposed to an electromagnetic pulse—in the last place they expected: a crystal you might find in a child's toy. [24] The research shows that concentrated electrolytes in solution affect hydrogen bonding, ion interactions, and coordination geometries in currently unpredictable ways. [23] An exotic state of matter that is dazzling scientists with its electrical properties, can also exhibit unusual optical properties, as shown in a theoretical study by researchers at A*STAR. [22] The breakthrough was made in the lab of Andrea Alù, director of the ASRC's Photonics Initiative. Alù and his colleagues from The City College of New York, University of Texas at Austin and Tel Aviv University were inspired by the seminal work of three British researchers who won the 2016 Noble Prize in Physics for their work, which teased out that particular properties of matter (such as electrical conductivity) can be preserved in certain materials despite continuous changes in the matter's form or shape. [21] Researchers at the University of Illinois at Urbana-Champaign have developed a new technology for switching heat flows 'on' or 'off'. [20] Thermoelectric materials can use thermal differences to generate electricity. Now there is an inexpensive and environmentally friendly way of producing them with the simplest tools: a pencil, photocopy paper, and conductive paint. [19] A team of researchers with the University of California and SRI International has developed a new type of cooling device that is both portable and efficient. [18]
Category: Thermodynamics and Energy

[7] viXra:1805.0227 [pdf] submitted on 2018-05-11 18:06:05

Moea Framework & Jikesrvm to Probe Computational Fluid Dynamics – an Interesting Insight Into the Informatics Aspects of CFD Using Genetic Algorithms,evolutionary Computation & Research Virtual Machine.

Authors: Nirmal Tej kumar
Comments: 3 Pages. Technical Communication on CFD & Informatics

As explained in the TITLE of this short communication,we have tested some inspiring ideas in the context of Computational Fluid Dynamics(CFD) using Java related technologies. Hence,we have demonstrated a simple approach,highly useful in many domains of Science & Technology.
Category: Thermodynamics and Energy

[6] viXra:1805.0202 [pdf] submitted on 2018-05-10 11:32:11

A Study on PWM and SPWM Control and Can Communication Realization in the Wind-Solar Photovoltaic Hybrid Power System Using Dspic30f4013

Authors: Kang Kyong-Mo, Kim Song-Jae, Kim Un-Chol, Ji Song-Chol, Pak Chang-Yon, Han Kuang-Jin
Comments: 4 Pages.

In this paper, we study the data transmission method by CAN communication, PWM and SPWM control method of the chips capable of CAN communication in wind - solar photovoltaic hybrid power generation system, and introduced the method of using DSPIC30F4013.
Category: Thermodynamics and Energy

[5] viXra:1805.0157 [pdf] submitted on 2018-05-06 22:31:35

The Determining of the Lowest Water Level in a Surge Tank

Authors: Kim Chol-Gyong, Sin Gyong- Il, Ri Un-Chol
Comments: 4 Pages.

This treatise solved: firstly, mathematically solved the important factor in management of the canal system hydropower plant -the lowest water level of the surge tank (or fore bay tank). Secondly, improved the former is the same as the stability condition of the water level vibration in the surge tank. Thirdly, improved the water level in the surge tank is connected with the diameter of the hydraulic tunnel and the diameter of the penstock. Key words: hydropower plant, surge tank, lowest water level, hydraulic tunnel, penstock
Category: Thermodynamics and Energy

[4] viXra:1805.0130 [pdf] submitted on 2018-05-06 08:55:34

Water-Based Battery

Authors: George Rajna
Comments: 53 Pages.

Stanford researchers have developed a water-based battery that could provide a cheap way to store wind or solar energy generated when the sun is shining and wind is blowing so it can be fed back into the electric grid and be redistributed when demand is high. [31] Researchers at AMOLF and the University of Texas have circumvented this problem with a vibrating glass ring that interacts with light. They thus created a microscale circulator that directionally routes light on an optical chip without using magnets. [30] Researchers have discovered three distinct variants of magnetic domain walls in the helimagnet iron germanium (FeGe). [29] Magnetic materials that form helical structures—coiled shapes comparable to a spiral staircase or the double helix strands of a DNA molecule—occasionally exhibit exotic behavior that could improve information processing in hard drives and other digital devices. [28] In a new study, researchers have designed "invisible" magnetic sensors—sensors that are magnetically invisible so that they can still detect but do not distort the surrounding magnetic fields. [27] At Carnegie Mellon University, Materials Science and Engineering Professor Mike McHenry and his research group are developing metal amorphous nanocomposite materials (MANC), or magnetic materials whose nanocrystals have been grown out of an amorphous matrix to create a two phase magnetic material that exploits both the attractive magnetic inductions of the nanocrystals and the large electrical resistance of a metallic glass. [26] The search and manipulation of novel properties emerging from the quantum nature of matter could lead to next-generation electronics and quantum computers. [25] A research team from Lab) has found the first evidence that a shaking motion in the structure of an atomically thin (2-D) material possesses a naturally occurring circular rotation. [24] Topological effects, such as those found in crystals whose surfaces conduct electricity while their bulk does not, have been an exciting topic of physics research in recent years and were the subject of the 2016 Nobel Prize in physics. [23]
Category: Thermodynamics and Energy

[3] viXra:1805.0107 [pdf] submitted on 2018-05-05 11:25:59

Design and Analysis of A Compact UWB Antenna based on Super-Formula

Authors: Kim Song-Jae, Kim Un-Chol, Kang Kyong-Mo
Comments: 8 Pages.

In this paper, compact ultrawideband(UWB) antennas (1-Element and 2-Element) are presented for UWB application. The contour profile of the antenna is obtained by setting the six different parameters of the super-formula. The antenna is microstrip-fed and mounted on compact size FR4 substrate of dimensions of . To improve the impedance bandwidth, a notch is cut from the ground plane and the edges are chamfered with specific dimensions. The antenna is simulated using a full-wave simulator HFSS. Results showed that the antenna works in the UWB range(3.3-10.3GHz) with VSWR less than 2,and having almost constant gain and group delay.Also,in paper 2-Element antenna array are designed and simulated. Proposed antenna are used for applications such as WPAN,WBAN,etc.
Category: Thermodynamics and Energy

[2] viXra:1805.0100 [pdf] submitted on 2018-05-04 00:31:03

Simulation of Construction Process and Stability Analysis of Surrounding Rocks at the Underground Waterway Tunnel Based on Abaqus

Authors: Kim Chol-Gyong, Ri Un-Cholb, Kim Dong-Song, Kim Jin-Hyok
Comments: 12 Pages.

The construction process of the underground waterway tunnel was divided into two stages and the calculation and after treatment was carried out by using the ABAQUS element technique. The study on the ground stress in the working area and the stability of the surrounding rocks were analyzed to improve the reliability of the initial surface stress equilibrium method. As shown in the results, we can know the parameters of the surrounding rock material affect the development and deformation of the surrounding rocks during the construction of the underground waterway tunnel, and the different excavation processes also affect the deformation and the flow of the surrounding rocks.
Category: Thermodynamics and Energy

[1] viXra:1805.0090 [pdf] submitted on 2018-05-04 08:20:42

Zero-Energy Modes

Authors: George Rajna
Comments: 36 Pages.

Physicists and material scientists have succeeded in constructing a motor and an energy storage device from one single component. [23] Heat pipes are devices to keep critical equipment from overheating. They transfer heat from one point to another through an evaporation-condensation process and are used in everything from cell phones and laptops to air conditioners and spacecraft. [22] Now, researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have developed an algorithm that can discover and optimize these materials in a matter of months, relying on solving quantum mechanical equations, without any experimental input. [21] Researchers at the University of Illinois at Urbana-Champaign have developed a new technology for switching heat flows 'on' or 'off'. [20] Thermoelectric materials can use thermal differences to generate electricity. Now there is an inexpensive and environmentally friendly way of producing them with the simplest tools: a pencil, photocopy paper, and conductive paint. [19] A team of researchers with the University of California and SRI International has developed a new type of cooling device that is both portable and efficient. [18] Thermal conductivity is one of the most crucial physical properties of matter when it comes to understanding heat transport, hydrodynamic evolution and energy balance in systems ranging from astrophysical objects to fusion plasmas. [17] Researchers from the Theory Department of the MPSD have realized the control of thermal and electrical currents in nanoscale devices by means of quantum local observations. [16] Physicists have proposed a new type of Maxwell's demon—the hypothetical agent that extracts work from a system by decreasing the system's entropy—in which the demon can extract work just by making a measurement, by taking advantage of quantum fluctuations and quantum superposition. [15] Pioneering research offers a fascinating view into the inner workings of the mind of 'Maxwell's Demon', a famous thought experiment in physics. [14] For more than a century and a half of physics, the Second Law of Thermodynamics, which states that entropy always increases, has been as close to inviolable as any law we know. In this universe, chaos reigns supreme.
Category: Thermodynamics and Energy