Urban heat island

All things are made of atoms that have constant movement, like five year olds on red bull. So these molecules and atoms make energy in the form of heat from their energy, similar to what your body does when it works out and you start to get hot. Therefore all matter has at least some thermal energy, no matter how small or minute it is. There is different types of energy but this essay is meant to inform readers of conduction, convection and radiation because they all deal with thermal energy.…

whenever heat is added to a system, the heat transforms into an equal amount of some other form of energy. The equation representing this specific law is as follows: heat added equals the increase in internal energy plus external work done by the…

Sadi Carnot, in 1824, explained mathematical principle of refrigeration operation. It was described as a heat engine. In the process of vapor compression refrigeration the refrigerant has to complete phases in cyclic order. In this process, heat is removed and consequently the desired location becomes cool. It is a mechanical process. Indeed, refrigeration system is the process of several refrigeration cycles. It is the widely exploited method for various purposes such as refrigeration,…

Sultra the Vixen is a combination curling iron, hot air brush and dryer all in one sleek and beautiful volumizing package. While some other hot air brushes need to be used on slightly damp hair, or require product on dry hair, the Vixen uses hot air to heat the ceramic barrel. This creates a combination of hot air brush and curling iron that can be used on dry or damp hair. Instead of spending over an hour sectioning, blow drying, and curling your hair, you can achieve a beautiful blowout look…

Being the largest organ in your body, your skin works really hard to protect you against germs, pollution and extreme temperatures. It keeps you warm in winters and cool in summers. Your skin is also the first to show indications of an underlying problem in your body and the signs include dryness, oiliness, eczema, sores, moles, bruises, etc. And these are a few of the reasons why you should take care of your skin. Skin care is not just about using expensive skin care products. It entails…

transparent glass cover of dimensions 4 mm thick, transmits the heat flux to the absorber plate, ensures the reduction of thermal losses due to the heat exchange by convection and radiation and protects the absorber from the outside environment.  A thin copper absorber plate with a black chrome finish on it, which was 1.5 mm thick.  A polystyrene sheet with a thickness of 40 mm, placed alongside a wooden case to minimize the heat loss from the back and sides of the collector. The solar air…

1. Insulator is a material that does not transmit heat, sound or electricity from one end to another. It hinders the free flow of electrons from atom to atom and molecule to molecule. This is because the electrons are tightly bond to the atoms leaving no space for there to be any free electrons to transmit electrical energy. Examples of insulators are glass, rubber, wood and paper. Conductor is an object or type of material that can transmit heat, sound, light or electricity. It does this by…

systems do not rely on force air, which uses oil or gas to blow heated air around the home through a duct system. In homes with traditional HVAC systems, the home dwellers will experience the heat by coming into contact with the air, which is generally around the midpoint of the body. On the other hand, radiant heat directly produces warmth through physical contact with the floor, where the heating coils are stored. Electric radiant…

Car radiator is an integral part of the engine. The primary function of a radiator is to keep the engine cool. If you are facing radiator issues in your car, there is nothing new about it. As radiator problem is a common phenomenon associated with cooling system malfunctioning. However, you should not get complacent due to the nature of the problem. In fact, if the issue is not taken care of immediately, then it will affect the engines & in the long run the performance of the car gets degraded.…

Tribological behavior of double-glow plasma Zirconium-Yttrium alloying on γ-TiAl Cong Huang, Pingze Zhang*, Dongbo Wei, Xiangfei Wei, Xiaohu Chen and Feng Ding (College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211100, China) * Corresponding author: pzzhang_nuaa@126.com Abstract: A Zr-Y alloyed layer was prepared onto the surface of γ-TiAl using double-glow plasma surface alloying technique (DG technique). The results showed that the Zr-Y…