The Effect of Insulation on the Rate of Cooling
P PLANNING
The Problem
The problem which I intend to investigate is out if insulation affects
the rate of cooling, and whether the amounts of insulation would
affect the rate of cooling
Scientific Background
An insulator is any of various substances that blocks or slows down
the flow of heat, they can only transfer energy slowly. Many materials
make air as an insulator, because air is an excellent insulator.
Air can reduce heat lost due to conduction. The material has to trap
the air to get the best result. This is to avoid warm air escaping and
taking the energy with it.
Energy can be transferred in four main ways when you heat something:
by conduction, convection, radiation and evaporation.
In conduction the particles are joined together by bonds, when the
material is heated the particles vibrate really fast, they have
kinetic energy. A fairly still part in a cold part of the material
can pick up vibration from an atom in a hot part of the metal. The
energy is transferred from one particle to another very quickly. Soon
particles from far away have more and more kinetic energy, heating the
material. A good conductor is metal.
In convection, particles in a fluid moves all the time. When you heat
a fluid, energy is transferred to the particles. The particles move
faster and get further apart, so the heated part of the fluid expands.
This makes the heated fluid less dense than the unheated fluid.
Because the fluid is less dense, the warm fluid floats above the cool
fluid, taking its extra energy with it.
In radiation particles are not needed. Silver surfaces and smooth
white surfaces are bad at absorbing and bad at emitting radiation.
Black surfaces are good at absorbing and good at emitting radiation.
In evaporation, the particles in a liquid sticks together, but much
more weakly than particles in a solid. The particles move about and
constantly bump into each other, they have kinetic energy.
Half fill the ... ... middle of paper ... ... e data quality. Furthermore, using a graduated cylinder with markings below the 100 mL line would have allowed for more accurate measurements of the initial volume of air in the graduated cylinder.
An Investigation Into How the Thickness of Insulation Affects the Time a Drink Takes to Cool Down
aluminum foil to preserve heat transfer. The thermometer is sticking out of the aluminum foil.
Pelican products have been made for extreme conditions and are being used in defence, emergency services and expeditions in extremely remote areas. These coolers are now available to you.
and therefore there is more area for the acid to react with it, and so
good emitter of heat radiation so a lot of heat will be lost to the
heat will stay in the cup and can only escape by rising to the surface
This transducer senses its surroundings by emitting and/or detecting infrared radiation (invisible electromagnetic radiation with longer wavelengths than those of visible light). They can also detect the person’s skin temperature through emitted black body radiation.
and distribute it, keys and valves to admit wind to the pipes, and one or more
Instruments packets must be placed at least 1 cm apart to allow heated air to circulate. If packed together without spacing ineffective sterilization.
· The same diameter corer is used so to keep the surface area of each
Life changed immensely in the 20th century as air conditioning and refrigeration systems became more efficient and controllable. Air Conditioning and Refrigeration play important roles in providing human comfort, food processing, storage, and many other industrial processes. We chose this topic because our life would be difficult without AC and Refrigeration. This paper will talk about the history of air conditioning and refrigeration, the role of engineers in designing and building it, people’s life before and after air conditioning and refrigeration, and finally Applications in the area of achievements and future developments.
As discussed in class, submission of your solutions to this exam will indicate that you have not communicated with others concerning this exam. You may use reference texts and other information at your disposal. Do all problems separately on clean white standard 8.5” X 11” photocopier paper (no notebook paper or scratch paper). Write on only one side of the paper (I don’t do double sided). Staple the entire solution set in the upper left hand corner (no binders or clips). Don’t turn in pages where you have scratched out or erased excessively, re-write the pages cleanly and neatly. All problems are equally weighted. Assume we are working with “normal” pressures and temperatures with ideal gases unless noted otherwise. Make sure you list all assumptions that you use (symmetry, isotropy, binomial expansion, etc.).
Heat energy is transferred through three ways- conduction, convection and radiation. All three are able to transfer heat from one place to another based off of different principles however, are all three are connected by the physics of heat. Let’s start with heat- what exactly is heat? We can understand heat by knowing that “heat is a thermal energy that flows from the warmer areas to the cooler areas, and the thermal energy is the total of all kinetic energies within a given system.” (Soffar, 2015) Now, we can explore the means to which heat is transferred and how each of them occurs. Heat is transferred through conduction at the molecular level and in simple terms, the transfers occurs through physical contact. In conduction, “the substance
...ndows maximum benefit sunlight in the winter. And also this prevents the summertime sunshine to reduce any cooling expenses.