Solar Estimate Summary For the past few weeks, my classmates and I have been collecting data on the amount energy in kilowatts produced by solar panels on a given day. We have been guessing how many kilowatts of energy would be generated based on the forecast for each day, and then we were left with our estimates and the actual production of that day. In order to make this activity useful, we then took both numbers and found our percent error both weekly and daily. My best percent error days throughout the whole time were 1.09 and 0.44%. Now, needless to say, there were some bad days too. It was only easy to get a good percent error when the weather did what is was supposed to do, when we had an accurate scale to follow, and when there wasn’t
...e been beneficial to the experiment. An error may have occurred due to the fact that measurements were taken by different individuals, so the calculations could have been inconsistent.
In conclusion the experiment was carried out and had great success proving my prediction to be correct and enabling solid and valid results which were able to be put in a graph. I believe my prediction could have been more accurate or more backed up if I had made a quantitative prediction. Though what I believed would happen did happen during the experiment which helped to understand the graph and the results which led me to be able to write a thorough report on them.
...han 10% out from any group of results would be considered inaccurate and would be repeated. The uncertainties in my results after any repeated results were sufficiently small enough to keep my results reliable.
Discussion: The percent of errors is 59.62%. Several errors could have happened during the experiment. Weak techniques may occur.
Over the observed fifty seconds, there was a consistency among the temperatures. Without a calculated percent error, we are able to assume the average temperature was twenty-six degrees Celsius. There are factors that could have caused error to arise in our data collection. One factor could be that the temperature of the room was not consistent throughout the room. Another factor may have been the performance of the thermometer. The grasp in which the thermometer was held for procedure B may also be a factor.
In this experiment, there were several objectives. First, this lab was designed to determine the difference, if any, between the densities of Coke and Diet Coke. It was designed to evaluate the accuracy and precision of several lab equipment measurements. This lab was also designed to be an introduction to the LabQuest Data and the Logger Pro data analysis database. Random, systematic, and gross errors are errors made during experiments that can have significant effects to the results. Random errors do not really have a specific cause, but still causes a few of the measurements to either be a little high or a little low. Systematic errors occur when there are limitations or mistakes on lab equipment or lab procedures. These kinds of errors cause measurements to be either be always high or always low. The last kind of error is gross errors. Gross errors occur when machines or equipment fail completely. However, gross errors usually occur due to a personal mistake. For this experiment, the number of significant figures is very important and depends on the equipment being used. When using the volumetric pipette and burette, the measurements are rounded to the hundredth place while in a graduated cylinder, it is rounded to the tenth place.
The Effect of Intensity on the Power of Solar Cells This experiment involves changing the intensity of light falling on different cells and measuring their power outputs. Higher intensity of light means that there are more photons hitting the surface of the cell per unit area per second. The more hit the cell, the more rapidly the electrons move across the p-n junction, so the larger the emf produced. If the rate of movement of electrons is inhibited, then the greater the rate of supply of photons (intensity), the more will not successfully excite an electron, so the lower the efficiency of the cell.
Solar cells have been around since 1883, when the first solar cell was created. Even though they have been around for so long, many people still wonder why they have not been implemented into wide-scale usage already. Solar cells today are highly efficient and can provide enough energy to power many cities today. But what is holding them back from being used in developing countries that have a chance to base their society around them, or in already developed countries? Simply put- the cost.
changes. Then there are the changes. I would also try and use more accurate ways of reading the temperature and keeping the temperature constant, such as by using a water bath. Doing this would possibly make my results even more. accurate.
Did you ever think about where your drinking water comes from? The water that we drink was initially sea water that has undergone a scientific process called desalination. Desalination is a chemical process in which natural compounds are separated from water, making the water clean and drinkable. Traditionally, sea water is propelled through hydraulic pumps which create a flow to separate the water from the sea salt. Hydraulic pumps require certain chemicals that are harmful to humans and these chemicals sometimes are cross-contaminated in the drinking water being produced. Personally, I don’t want to drink chemicals that are threatening to my life and that cause harm to the environment. Many people would be uncomfortable if they knew what chemicals their drinking water may contain, especially if their children also consume it. The major drinking water producers should rely on solar energy to desalinate water which is a newer, cleaner, and safer alternative energy source.
Possible sources of error in this experiment include the inaccuracy of measurements, as correct measurements are vital for the experiment.
Solar thermal energy is dead! A solar thermal heating system can cost upwards of $7,000 to install and it most likely won't even save you too much money. This is why many people debate over whether they should use a solar thermal water heating system, because they think they are saving money, or an inexpensive traditional water heating system. A traditional heating system is a system that is powered off of electricity, gas, oil or some other fuel. A solar thermal heating system uses the energy from the sun, hence “solar”, and it turns that energy into hot water to either heat a home or to provide domestic hot water. The energy from the sun is captured by energy collectors, also known as solar panels. The water is heated inside the panels and then distributed throughout the home for use or stored in a tank for later use. The ideas behind this sound great, but in reality that is not the case.Solar thermal energy is not the best choice for home heating a home or hot water heating.
I am certain that all have heard of the terms green house gases, fossil fuels, and global warming. Have you ever questioned what will happen if nothing is done about the environmental problems facing the world today? What if I answer you that, we can merely use the power from the sun to power up our entire planet without the use of harmful energy sources, which affect our atmosphere? The power from the sun is what we call solar power. Solar power is the energy that comes from the sun as light and heat energy, and then it is later converted into electrical energy through solar panels (Nelson, 2008). This kind of power is completely free, right? Why should we put a lot of expense on other sources of energy, when there is a complete free and healthy power? It is evident that solar energy is a healthy source of energy, which will help stop global warming all together, but it is economically efficient to switch everything to solar energy. Solar energy is capable of becoming the world's future power supply because, it is renewable, eco-friendly, and extremely efficient when strategically placed.
The Earth captures around 342 W/m2 of energy from the sun. This energy is in the form of solar radiation, which the atmosphere reflects about 77 W/m2 and will absorb around 68 W/m2 of solar radiation annually. Therefore, the Earth’s surface is receiving, on average, about 197 W/m2 of solar radiation annually. This amount of energy received is roughly more than 10,000 times the amount of all energy humans consume per year. This energy can be used to produce electricity or heat. This energy source is not being used to it’s potential considering how much effort would come into effect to store and transport this energy.
The Importance of Transitioning to Renewable Energies If estimates are correct, available fossil fuel reserves will be expended in the early 22nd century; these fossil fuels are accountable for around 90% of the world's power supply. Without power the modern world would effectively shut down and tear itself apart overnight. There is only one truly long-term solution to avoid this inevitable situation - infinitely renewable energy.