Unit 4 Essay

XYZ Company Ltd has consulted your firm Zig-Zag Energy over an intention to generate electricity in Ghana. Being the senior project engineer for Zig-Zag Energy, management has asked you to prepare a detailed technical report in respect to the project. a) Discuss the major factors to take into consideration when consulting on such projects.                                                                                                           A tank containing air is stirred by a paddle wheel. The work input to the paddle wheels is 2000KJ and the heat transferred to the surrounding from the tank is 6000KJ. b) Determine the change in the internal energy of the system                                              There has been a sharp differences between the board of Blue-Blue Energy over which of the energy sources (hydroelectric power plant-HEP and Coal fired plant) is best for power generation. As an energy expert, you were confronted by the debating faction for your opinion. You…

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Question 2 In thermodynamics, interactions between large ensembles of objects are studied and categorized. Central to this are the concepts of the thermodynamic system and its surroundings. A system is composed of particles, whose average motions define its properties, and those properties are in turn related to one another through equations of state. Properties can be combined to express internal energy and thermodynamic potentials, which are useful for determining conditions for equilibrium and spontaneous processes. (a) Consider an electric refrigerator located in a room. Determine the direction of the work and heat interactions (in or out) when the following are taken as the system: i. the contents of the refrigerator. ii. all parts of the refrigerator including the contents. iii. everything contained within the room during a winter day.

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Direction: Graph the heating curve of ethanol using the information given. Check off each item as you add additional information to your graph so that none is missed.  Background information of Ethanol: Boiling Point = 78 0C Melting Point = -114 0C Starting Temperature = -120 0C After two minutes, frozen cold ethanol starts to melt. It takes two minutes to melt completely. After eight more minutes, it begins to boil. It boils for six minutes. Heat is added for two more minutes until ethanol reaches 80 0C. Label “melting” where this takes place. Label “vaporization” where this takes place. Label “phase change” where a phase change occurs. Indicate where ethanol is only a SOLID, only a LIQUID, and only a GAS. Of the three phases, label which phase has: weakest IMF, strongest IMF, and medium IMF.

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Part 1: Do the Analysis of the Ocean Thermal Gradient Power Plant shown below. Your Analysis will be easier to do in EES but it is up to you. Your EES program must be well documented and documentation in your code should reference system sketches. (The cycle and individual components) These sketches are done on attached engineering or typing paper, unless you are able to draw them in EES. You must validate your results with hand calculations on engineering paper that invoke the 1 and 2 Law from the perspective of the entire cycle, not the individual components. Of course, a system sketch is required. nd 1. An ocean thermal gradient power plant using a simple non-ideal Rankine Cycle operates with a peak boiler temperature of 70 °F and a condenser temperature of 40 °F. The warm surface water of the ocean is supplying the thermal energy to the boiler. Assume a high source temperature of 80 °F. The cooler water deeper in the ocean is the sink for heat rejection at the condenser. Assume a…

Hi, can you please help me with these two questions? I would like to understand what is happening through the schematics first before moving on to the substantive equations.

Question #5 (Similar to Question #4, You solved, I have attached the question #4)Design a question to calculate the heating load for the building you selected indoor Environment Quality (IEQ) assessment. You will define the types of heat loss (at least two types) in that building (or the floor you are working on or you are familiar with). The indoor temperature is set as 75 F, and you can assume the outdoor temperature based on the location of your building in the winter and any other numbers needed to resolve this question. For all the details as well as the final answer that this question is asking for, clearly indicate the unit for each piece of information.

University of Basrah - College of Engineering Department of Mechanical Engineering Subject: Power Plant I Class: Fourth Examiner: Dr. Ahmad A. M Alsahlani Notes: Giving Sketches is compulsory wherever needed (Total Ma Q1] Answer the following que Exam: Final-Exam Date: 11/09/2023 Time: 2 Hours 1- Explain how the Geothermal Energy can be utilized to generate electricity. 2- State the two classifications of energy sources and give three examples for each. 3- State three advantages and three disadvantages of using Gas Turbine Power Plant. 4- What are the reasons that lead to a deviation in the ideal gas turbine cycle? 5- Draw a block diagram for a regenerative Rankin Cycle using one open feed water heater. Q2] A closed cycle gas-turbine power plant has a pressure ratio of 10. The air temperature is 35 C at the compressor inlet and 1127 C at the turbine inlet. The received energy at the Qi combustion chamber is 794 kJ/kg. Assume the isentropic efficiency of the turbine is 95%. Determine…

Answer question 2 based on the results of question 1. You have a natural gas furnace in your home that used 78,500 cubic feet of natural gas for heating last winter. Your neighbor has a furnace that burns heating oil, and used 516 gallons of heating oil last winter. You can convert the natural gas and heating oil consumption data into Btu to determine which home used more energy for heating. Natural gas BTU:  1,028 Btu per cubic foot Oil BTU: 138,590 Btu per gallon   Natural Gas BTU= 80698000 Btu Oil BTU                = 71512440 Btu   The home that used a natural gas furnace used more energy for heating. 2. You need a new furnace for your home, and you are comparing systems that use natural gas and heating oil. One factor to consider is the cost of fuel. You can compare the price of the fuels on an equal basis by dividing the price per unit of the fuels by the Btu content per unit of the fuels to get a price per million Btu. Assume Natural gas price = $10.50 per thousand cubic…

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QUESTION 3 A Type I offshore life jacket (i.e. personal flotation device) is the type worn by commercial fishermen - it is designed for extended survival in rough, open seawater. Consider such a life jacket that uses an impermeable foam material with a density of 32 kg/m³ - the other parts of the life jacket (straps, fasteners, etc) weigh 0.6 kg and are of negligible volume to the design. a) Draw a free body force diagram for the life jacket. b) Determine the minimum volume of foam material (in L) that is needed for the life jacket in order to provide a minimum 98 N net upward force when it is fully submerged in seawater (as required by US Coast Guard regulations).

Pls.answer thank you! A classroom that normally contains 40 people is to be air-conditioned with window air-conditioning units of 5 KW cooling capacity. A person at rest may be assumed to dissipate heat at a rate of about 360 KJ/hr. There are 10 light bulbs in the room, each with a rating of 100 watts. The rate of heat transfer to the classroom through the walls and the windows is estimated to be 15,000 KJ/hr. If the room air is to be maintained at a constant temperature of 21°C, determine the number of window air-conditioning units required.

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Part I : Analysis of heat exchangers in engineering applications(max. 5 pages)Select any thermal energy system you are interested. Describe the system and statehow the system works. The system should have at least one heat exchanger.Analyse the design of the heat exchangers and their functions in the system. Part Iand Part II are connected. Select a system you are able to complete the exergyanalysis in Part II.Part II: Exergy analysis & performance optimisation of heat exchangersfor a thermal energy system (max. 5 pages)Perform exergy analysis and performance optimization of the thermal energy systemin Part I.