Heat exchanger

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…

here first and second term in the equation (3) represents coulomb potential whereas last term is exchange-correlation potential. The exchange and correlation effects were taken in to account by using PBE-sol exchange correlation technique for treatment of electronic interactions in ZnGa2S4 and CdGa2S4 crystal compounds. The aim behind adoption of PBE-sol exchange correlation technique is that it recoups the prime gradient expansion for exchange and jallium surface potential are exactly…

experiment, the rate of vaporization does not matter. The objective of this experiment is to determine the experimental heat of vaporization and compare it to the accepted heat of vaporization of water (40.7 kj/mol). The molar heat of vaporization is the amount of energy required to vaporize one mole of a liquid at one atm and the symbol ∆ Hvap is used. The process by which the molar heat of vaporization is calculated is though the slope of a graph. The volume of…

the membrane, flashing and insulation material, sealant and roofing accessories. Roofing accessories such as adhesives and primers are mostly used along overlapping edges to form an unbreakable joint between the sheets. The other alternative is using heat welding to transform all the assorted pieces into a large single roofing cover. Before any cost estimates are made for installing a TPO roofing system, it is important to first inspect the site. The cost of labor may vary depending on the work…

Intervention Project: Healthy Eating and Exercising The behavior that I would like to change is eating healthier and exercising. For the past two years I have lived a sedentary life. I used to exercise four times a week for at least an hour. I have gained over 30 pounds in the past 2 ½ years. Right before I gained this weight, I was informed by my primary care physician that I was 20 pounds overweight for my height. It was not as if I wanted to gain weight, but my morale to exercise was gone…

Introduction The refrigerator is a common household appliance that is an essential food storage technique in developed countries; it is made up of compartments which are thermally insulated and also has a heat pump which can be mechanical, electronic or chemical. The heat pump is a device which transfers heat from the interior of the fridge to an external environment, this means that the fridge is cooled to a temperature which is below the ambient temperature of the room that it is in. the…