Group1_Module5_Design_Concepts

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4. For each of the situations in trie lapie welow, state the process by which heat is transferred. Getting burnt by touching a hot stove Hot air rising, cooling and falling Heat from a campfire when you are seated beside it Ice cooling down your hand Heat from the Sun warming your face Boiling water by thrusting a red-hot piece of iron into it A slice of bread placed undera red-hot electric grill to make toast Heating a tin can of water using a Bunsen burner

Problem Statement = You install a heat pump to heat a cottage during the winter using the outside air as the heat source. You wish to maintain the interior temperature of the cottage at 22°C. A simplified model of the heat loss through the walls indicates that heat will need to be supplied at a rate of 0.14(Tinterior - Texterior) where Q is the rate at which heat must be supplied to the cottage (in kW), Tinterior is the interior air temperature (in C), and Texterior is the exterior air temperature (in C). You have a 1kW electric motor available to run the heat pump. What is the coldest winter day when the heat pump will be able to keep up to the heating demand? Answer Table Stage Description Your Answer Correct Answer * Due Date Grade (%) Part Weight Attempt Action/Message. Type 1 Coldest outdoor temperature (°C) Nov 7, 2024 11:59 pm 0.0 1 1/5 Submit * Correct answers will only show after due date has passed.

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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…

Use the following information to answer the next three questions Mobile power plants, such as the one illustrated below, are used in remote locations. Flowing water turns a turbine, which then moves a coil of wire through a magnetic field. Mobile Power Plant Moving water Stream flowing downhill Location I Water turning turbine Location II -Spinning turbine -Permanent magnet Rotating wire coil Split-ring commutator Metal brush 10. The components that connect to the spinning turbine in the illustration on the previous page form a O ammeter O generator O motor 1. O transformer Your reasoning: MacBook Pro

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Problem Statement A heat engine draws 14 kW of heat from a reservoir at 900 K. The work it produces drives a refrigerator which produces a refrigeration capacity of 12 kW. Both devices reject heat to a reservoir at 300 K. What is the lowest possible temperature of the space cooled by the refrigerator? Answer Table Correct Stage Description Your Answer Answer * 1 Lowest temperature of cold space (K) Due Date Grade (%) Part Weight Attempt Action/Message Type Nov 7, 2024 11:59 pm 0.0 1 1/5 Submit

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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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Hydro Tasmania has initiated the Battery of the Nation (BotN) strategic initiative to investigate and map out future development opportunities for the State of Tasmania to make a bigger contribution to a future National Electricity Market (NEM). The Tarraleah scheme redevelopment pre-feasibility study was undertaken through this initiative, with funding support from ARENA under the Advancing Renewables Program. For this assignment problem you will be using your knowledge of hydro power to: (1) estimate extended specifications for a new power station on the left bank of the Nive River opposite the existing power station; and (2) to reverse engineer specifications for the Pelton turbines currently installed at the Tarraleah power station. The pre-feasibility design team established basic parameters of a new power station to comprise two Francis turbines with a design flow of 20 m³/s (total 40 m³/s), a net head of 305 m and an installed capacity of ~57 MW (total 113 MW). The Tarraleah…

The left side of this equation tells how much energy Q the cylinder gives to the water while it cools. The right side of this equation tells how much energy Q the water and aluminum cup absorb from the cylinder to warm up. Because it is the same energy, they are equal. What is known in this equation? Mcyl 411.7 g, malum 46.5 g, malum+water = 175 g Can you find: mwater =? g Twater = Talum = 20°C (water and cup of room temperature) 90°C, T; = 35°C (hot cylinder and cool "cylinder+cup+water" temperatures) Tcyl kCal Calum = 0.22, Cwater 1 (specific heat of water and aluminum, measured in units kg-°C What are we looking for is Ccul - How we find it? Plug all the numbers into the equation (1), Ccul will be one unknown which you can calculate from the equation. Important, convert all the masses from grams to kilograms! After you find Ccyl, compare it to known value for the copper 0.093(our cylinder is made out of copper). |Ceyl -0.093| % : · 100% 0.093

A heat pump is an electrical device that heats a building by pumping heat in from the cold outside. In other words, it's the same as a refrigerator, but its purpose is to warm the hot reservoir rather than to cool the cold reservoir (even though it does both). Let us define the following standard symbols, all taken to be positive by convention:Th = temperature inside buildingTe = temperature outsideQh heat pumped into building in 1 day Qe = heat taken from outdoors in 1 dayW = electrical energy used by heat pump in 1 day Explain why a heat pump is better than an electric furnace, which simply converts electrical work directly into heat. (Include some numerical estimates. )

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Could you please explain where and what is tight side and also how to find 5-9