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Lunarable Geometric Futon Couch, Modern Minimalist Design with O


Lunarable Geometric Futon Couch, Modern Minimalist Design with O


Product description

Measurements - 30" width x 70" length as a sofa and 30" width x 78" length as single bed! Made from - Matte black painted steel futon frame, backrest padded sponge cushion amp; foam mattress. Features - Functional and easily converts from a sitting to a sleeping position. Use as sofa or bed. Versatile - From the guest bedroom to the living room, suitable for both indoor and outdoor use. Print - Sponge backrest cushion and spring foam are printed with state of art digital technology. When your family members or friends are staying overnight, it can be bugging to find a place to sleep for your guests. With its practical form, you can effortlessly turn a futon seat into a single bed! You can host your guests in ultimate comfort and protect the ambiance of your home. Instead of bulky furniture or uncomfortable mattresses, you can easily make your home more spacious. The matte black painted steel structure of Futon Frame provides durability and beauty so you can use it with joy for many years. Whether a sofa or lounging chair while you are having the deepest conversation in your gatherings, taste the multifunctional world of Futon! The cushion consists of a durable soft foam mattress and the backrest cushions are padded with a sponge so it provides premium comfort to you and your loved ones. From the guest bedroom to the living room, it will be a perfect choice to have with its modern look. Futon Seat will perfectly fit into every room and you will have the utmost pleasure. The outer cover is made of printed %100 microfiber breathable microfiber fabrics that can be changed according to your preferences. Use nautical patterns to make your room more relaxing and fresh or choose floral patterns to have a sweet spring breeze! You will renovate your home from top to bottom with designs that reflect your character with thousands of different pattern options.

Lunarable Geometric Futon Couch, Modern Minimalist Design with O

Thermal engineering is a specialized discipline of mechanical engineering that deals with the movement of heat energy and transfer. Since the energy can be transformed between two mediums or transferred into other forms of energy, a thermal engineer must have knowledge of thermodynamics and the process to convert generated energy from thermal sources into chemical, mechanical, or electrical energy.

One or more of the following disciplines may be involved in solving a particular thermal engineering problem:


A knowledge of thermodynamics is essential to nuclear engineers, who deal with nuclear power reactors. Thermodynamics is the science that deals with energy production, storage, transfer and conversion. It studies the effects of workheat and energy on a system. Thermodynamics is both a branch of physics and an engineering scienceThe physicist is normally interested in gaining a fundamental understanding of the physical and chemical behavior of fixed quantities of matter at rest and uses the laws of thermodynamics to relate the properties of matter. Engineers are generally interested in studying energy systemsand how they interact with their surroundings. Our goal here will be to introduce thermodynamics as the energy conversion science, to introduce some of the fundamental concepts and definitions that are used in the study of engineering thermodynamics. These fundamental concepts and definitions will be further applied to energy systems and finally to thermal or nuclear power plants.

Fluid Mechanics

CFD numerical simulation Source: CFD development group – hzdr.de

Fluid mechanics is the branch of thermal engineering concerned with the mechanics of fluids (liquids, gases, and plasmas) and the forces on them. It can be divided into fluid statics, the study of fluids at rest; and fluid dynamics. Fluid dynamics is a subdiscipline of fluid mechanics that deals with fluid flow. Fluid dynamics is one of the most important of all areas of physics. Life as we know it would not exist without fluids, and without the behavior that fluids exhibit. The air we breathe and the water we drink (and which makes up most of our body mass) are fluids. Fluid dynamics has a wide range of applications, including calculating forces and moments on aircraft (aerodynamics), determining the mass flow rate of water through pipelines (hydrodynamics).

Fluid dynamics is an important part of most industrial processes; especially those involving the
transfer of heat. In nuclear reactors the heat removal from the reactor core is accomplished by passing a liquid or gaseous coolant through the core and through other regions where heat is generated. The nature and operation of the coolant system is one of the most important considerations in the design of a nuclear reactor.

Heat Transfer and Mass Transfer

Heat transfer is an engineering discipline that concerns the generation, use, conversion, and exchange of heat (thermal energy) between physical systems.  In power engineering it determines key parameters and materials of heat exchangers. Heat transfer is usually classified into various mechanisms, such as:

  • Heat Conduction. Heat conduction, also called diffusion, occurs within a body or between two bodies in contact. It is the direct microscopic exchange of kinetic energy of particles through the boundary between two systems. When an object is at a different temperature from another body or its surroundings
  • Heat Convection. Heat convection depends on motion of mass from one region of space to another. Heat convection occurs when bulk flow of a fluid (gas or liquid) carries heat along with the flow of matter in the fluid.
  • Thermal Radiation. Radiation is heat transfer by electromagnetic radiation, such as sunshine, with no need for matter to be present in the space between bodies.

In engineering, the term convective heat transfer is used to describe the combined effects of conduction and fluid flow.  At this point, we have to add a new mechanism, which is known as advection (the transport of a substance by bulk motion). From the thermodynamic point of view, heat flows into a fluid by diffusion to increase its energy, the fluid then transfers (advects) this increased internal energy (not heat) from one location to another, and this is then followed by a second thermal interaction which transfers heat to a second body or system, again by diffusion.