Group1_Module5_Design_Concepts

I need help with the steps of this thermodynamics review sheet! Thank you  A heat engine with a thermal efficiency of 45% rejects 1000 kJ/kg of heat to a low temperature sink. How much heat does it receive(kJ/kg)? How much work does it produce (kJ/kg)? If the cycle operates between temperatures of 400°C and 50°C, what is the maximum amount of work that this cycle can produce (kJ/kg)? A Carnot heat pump operates between 273 K and 313 K, determine its Coefficient of Performance.

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

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…

Choice the correct answer of the following statements: 1. The power transmitted of two pulleys connected by an open belt or crossed belt is a) directly proportional to their diameters; b) inversely proportional to their diameters; proportional to the square of their diameters; c) directly d) inversely proportional to the square of their diameters. 2. Two pulleys of diameters d1 and d2 and at distance x apart are connected by means of an open belt drive. The length of the belt is: a) π/2 (d: + d₂) 2x + (d: + dz)/4x; b) n/2 (d₁-dz) 2x + (di-dz)/4x; c) n/2 (d: +d₂) 2x + (di-d₂}/4x; d) π/2 (d₁-də) 2x + (d: +d₂)²/4x. 3. In a cone pulley, if the sum of radii of the pulleys on the driving and driven shafts is constant, then: a) open belt drive is recommended; b) cross belt drive is recommended; c) both open belt drive and cross belt drive are recommended; d) the drive is recommended depending upon the torque transmitted. 4. Due to not slip of the belt, the power transmitted of the belt drive:…

Task 1 You are a student at the HTU University, the instructor of the fundamental of thermodynamic course asked you to explain the fundamentals of thermodynamic systems to Grade 10 school students to help them visualize the importance of thermodynamics in their life starting from their car engine and moving to the different appliance that they use in their home, discuss the following with school students: Q1. What does thermodynamics mean and represent? Give examples from your daily life. Q2. What is a thermodynamic property? What is the difference between intensive and extensive properties. Why the density is an intensive property; it is dependent on mass and volume which are extensive properties, right?. Q3. What is the difference between energy and heat transfer? Give examples on both. Q4. What does the first law of thermodynamics state? Give two examples on the first law of thermodynamics from your daily life. Q5. Write down the equation of energy balance for closed, open, and…

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

The topic of total derivation

Question 50 You've met a lovely lady named Gertrude. She uses 8,068 kWh of electricity per year. She pays $0.12/kWh to the local distribution utility. She would like to go net-zero. Your co-worker has determined that shading losses will reduce total electrical generation by 2%. You plan to use an inverter that is 95.4% efficient. Assume that grid availability is 99.1%. 1kw of installed capacity will generate 1,277 kWh/year at this location, before losses are taken into account. Assuming standard losses for all other components, what is the maximum system size in kw that you would recommend that she install on her home, to 1 decimal place accuracy (do not take age-related losses into account)? While 10kw is the standard maximum for residential accounts, ignore that restriction (ie. if your answer is 15.1kw, then input 15.1) how to solve this Hand written asap

3.simple presentation of Nuclear Power Plant

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. )

O You are running an industrial research study together with your project team to improve energy efficiency in a combustion process. The purpose of the research is to identify the optimum air-fuel ratio for the combustion process in a boiler under varying conditions of air supply and quality of fuel. The study would involve design of experiments, data collection and analysis, simulation of the different variables and validation of the optimum parameters. There is a lot of pressure to improve the energy efficiency as there is a forecast of fuel price rise in the forthcoming month. Based on the CRPE code of ethics, explain two critical precautions which the engineers have to consider before implementation of the data collection process for the industrial experiment. to be taken during the Describe briefly five ethical measures experimentaldata collection in order to ensure validity of results. Explain two precautions to be taken during the report writing on the research study carried out…

Use the information below to answer the questions that follow. Annual household fuelwood use in Nigeria is 1600 kilograms The percentage of non-renewable biomass is 50% The net caloric value of woody biomass is 10 MJ/kg CO2 produced per MJ of fuelwood is 100 g 1 metric ton = 1,000,000 grams. Price of a carbon credit in California's carbon allowance auctions is $12 a) An improved firewood stove called a Mirt stove saves 25% of fuelwood in the field. Calculate the carbon savings for one year for one household (answer should be in tons of CO2). Your Answer: Answer

Problem 2 Six years ago, an 80-kW diesel-electric set cost $160,000. The cost index for this class of equipment six years ago was 187 and is now 194. The plant engineering staff was considering a 120-kW unit of the same general design to power a small isolated plant that would have cost $211,707. Based on the information above the plant engineering staff is considering a 100-kW unit of the same general design to power a small isolated plant. Assume we want to add a pre- compressor, which (when isolated and estimated separately) currently costs $13,000. Determine the total cost of the 100-kW unit.

Thermodynamics : Ideal Gas Cycle You have to make a SUMMARY OF FORMULAS (entire output must fit in ONE-PAGE ONLY of your chosen paper size) about Ideal Gas Cycles (Carnot, Brayton, Diesel and Otto). Your output must include SCHEMATIC DIAGRAM (T – S or P – V DIAGRAM), SUMMARY OF FORMULAS (Heat Added, Heat Rejected, Efficiency, Net Work, Important Constants, etc.).

Wind power is defined as the use of air flow through wind turbines to provide the mechanical force to generate electricity. Wind power is an alternative to burning fossil fuels, and is renewable and produces no greenhouse gas emissions during operation. Modern horizontal-axis wind turbines often use three blades. Theoretically, the maximum power P (unit: watts) that a three-blade wind turbine can extract from the wind power can be calculated as: P = pAv³C₁. . (Equation 1) where p is the air density (kg/m³), A is the sweep area of the turbine (m²) and can be calculated from the length of the turbine blades, and v is the wind speed (m/s). Cp is the power coefficient that is unique to each turbine type. This coefficient represents the amount of kinetic energy from the wind that is captured by the turbine. From the Betz's limit law we know that the best power conversion possible is Cp,max = 0.59. Part 1 Given the following data: Blade length /= 50 m Air density p= 1.5 kg/m³ Power…

8. Jose is looking intently to a 70 W outdoor security light that burns, on average, 10 hours a day. A new bulb costs P50.00, and the lifetime is about 1000hours. If electricity costs P0.10 per kWh, what is the yearly price of "security," per light? a. P315.10/yr b. P 208.07/yr c. P116.21/yr d. P98.69/yr

Power Engineering - ABEN 3411 Illustrate and discuss the principle of operation for diesel and gasoline engine.

Hi. I am trying to practice this problem using a checker online, but everytime I recalculate my answer it always says it's incorrect. So far I have calculated and tried to input the following values: 59.09kW, 53.0899kW, 21.94kW, and  22.715kW but it always keeps saying they are incorrect. Am I missing a sign change? (Should the answer be negative?) Or am I solving this incorrectly and getting the wrong value each time? Please help show me the correct steps on how to get the correct answer as I am trying to learn this process. Thank you!

Qout W H.P. in SOURCE A Carnot heat pump is used to maintain the temperature inside a building at 20 °C. Significantly, the colder it gets outside, the more heat is lost through the walls and windows of the building. Assume that 95 kW of heat are lost for each degree difference between the outside and the inside temperature. That means that the colder it gets, the harder the heat pump will need to work. However, for safety reasons, the controller circuit for the heat pump limits its electrical power consumption to 205 kW. What's the coldest it can get outside before the heat pump can't maintain the building temperature adequately? °C in

Hi guys, Data assumption coal boiler operation : Steam consumption = 300 kg steam/shift, coal price per kg = $0.5, coal calorie = 6300 Kcal/kg. Questions: 1. how to calculate cost ($) steam per shift ? 2. how to calculate steam calorie per shift ?   Thanks

THERMODYNAMICS 2 ACTIVITY 2: RANKINE CYCLE Answer the following problems completely. Strictly follow the PROBLEM – GIVEN – REQUIRED – SCHEMATIC DIAGRAM – SOLUTION – FINAL ANSWER format. BOX your final answers.

Your house has an electric water heater. Several friends are visiting you over the weekend and they are taking consecutive showers. Assume that at the maximum heating level, the heater uses 50 kW of electricity. The water use rate is a continuous 4 gallons per minute with the new water saving showerhead you recently installed. Your very old showerhead had used 7 gallons per minute. You replaced the showerhead because you learned that heating water was the second highest energy use in your home. By slowing the flow of water through the heater, the water temperature should increase to a higher temperature. (a) What is the change in temperature (T) for the old showerhead? (b) What is the change in temperature (T) for the new showerhead? Assume the system is at steady sate, and all of the 50 kW energy used is heating the water.

12 According to 1st law of thermodynamics Select one: O heat and work are convertible mass and energy are equal None mass and light are convertible O mass and energy are convertible

THERMODYNAMICS TOPIC: FIRST LAW OF THERMO/THERMODYNAMIC SYSTEM   PLEASE ANSWER COMPLETELY THE QUESTION IN HANDWRITING AND SUPPORT YOUR SOLUTION WITH DIAGRAMS.   THANK YOU