Problem 1 - Heat Engine ( A heat engine that propels a ship produces 400,000 lbf-ft/lbm while rejecting 300 BTU/lbm of heat to a low temperature energy sink. Using what you know about heat engines, estimate its thermal efficiency. In your solution include a schematic of the heat engine with the transports of energy across its boundary and your expression for thermal efficiency in literal form before initiating your computation.

Problem 1 - Heat Engine ( A heat engine that propels a ship produces 400,000 lbf-ft/lbm while rejecting 300 BTU/lbm of heat to a low temperature energy sink. Using what you know about heat engines, estimate its thermal efficiency. In your solution include a schematic of the heat engine with the transports of energy across its boundary and your expression for thermal efficiency in literal form before initiating your computation.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Goal Solve for the efficiency of a heat engine using a five-step process the includes:1. Making a state table.2. Making a process table.3. Calculating the totals for Work, Heat, and Internal-Energy-Change.4. Identifying the heat input (hot reservoir) and output (cold reservoir).5. Calculating the efficiency of the engine.Problem Shown in the figure to the right is a cyclic process undergone by a heat engine. Your heat engine shall use 7.0 moles of nitrogen gas (diatomic). During the process a->b, the pressure rises by a factor of 2.0. solution- (1) Fill in the State Table (all pressures in Pascals, all volumes in cubic meters, all temperatures in K). Pressure Volume Temperature a b c (2) Fill in the Process Table (all entries in Joules). Work Heat dU a->b b->c c->a (3) Find the Totals: Work = J Heat = J dU = J (4) Find the heat input (from "hot reservoir") and the heat output (to…
Goal Solve for the performance coefficient of a refrigerator using a five-step process the includes:1. Making a state table.2. Making a process table.3. Calculating the totals for Work, Heat, and Internal-Energy-Change.4. Identifying the heat input (cold reservoir) and output (hot reservoir).5. Calculating the performance coefficient of the refrigerator.Problem Shown in the figure to the right is a cyclic process undergone by a refrigerator. Your refrigerator shall use 5.0 moles of helium gas (monatomic). During the process a->b, the volume increases by a factor of 3.0. Solution- (1) Fill in the State Table (all pressures in Pascals, all volumes in cubic meters, all temperatures in K). Pressure Volume Temperature a b c (2) Fill in the Process Table (all entries in Joules). Work Heat dU a->b b->c c->a (3) Find the Totals: Work = J Heat = J dU = J (4) Find the heat input (from "cold…
Let's assume that the outdoor temperature in your region was 1 C on 26.12.2002. Let's assume that you use a 2088 W heater in the room in order to keep the indoor temperature of the room at 20 ° C. In the meantime, a 68 W light bulb for lighting, a computer you use to solve this question and load it into the system (let's assume it consumes 217 W of energy), you and your two friends (three people in total) are in the room to assist you in solving the questions. A person radiates 45 J of heat per second to his environment. When you consider all these conditions, calculate the exergy destruction caused by the heat loss from the exterior wall of your room.
In a concentrated solar power plant, molten salt tank is used to store the thermal energy from the sun during the day. The tank wall thickness is 3cm containing molten salt at a temperature of 390 degree Celsius. There is atmospheric air outside the tank at a temperature of 30 degree Celsius. Suppose heat is lost as a result of heat transfer from the molten salt to the atmospheric air. What is the mode of heat transfer in this condition? conduction then convection convection then conduction convection then conduction then convection conduction then convection then conduction
A conditioned space has a calculated heat loss at the design maximum heating day of 10,000 BTUs / Hr to maintain an interior temperature of 70 F. We will use a hydronic baseboard style convector to heat the space. The style we have chosen comes in standard lengths. At rated temperature and flow of hydronic heating fluid for each 1 foot of length the heater will add 750 BTUs /Hr to the room. What length of heater can just maintain the temperature on the worst day? For this example we are ignoring other sources of heat loss such as ventilation or drafts.
Write the simplified ENERGY BALANCE equation for each process based on the givenconditions. Start from the general energy balance form, and arrive at the correct balance byexplaining any addition, deduction, or change in the equation.Use the following as subscripts in your answer: 1 = initial system state; 2 = final system state; i = inletstate, e = exit state.a. A rigid tank transferring heat to its surroundings. b. The seal of an insulated system with a high energy substance is broken, causing the contents tobe evacuated until only 20% of the initial internal energy remained. No heat transfer was detectedin the system’s boundaries. c. Consider a hydroelectric power plant operating in steady conditions, wherein the system consistsof two water reservoirs with a height difference Δz, with a Francis water turbine placed betweenthe stream connecting both.
Q3: Consider evaluation of different temperatures of solar photovoltaic/thermal system (PVT) as shown in Figure 1(a). The following set of differential equations represent energy balance equations to be solve using matrices and eigenvalues dTglass = -0.75Tglass + 0.75TPVT (1) dt - 1.18Tglass – 22TpyT + 237wax (2) dt dTwax 12Tglass + 18TpyT – 19 Twax (3) dt Where, Tptass, TPVT, and Twax, are temperatures illustrated in Figure 1(b). At time t-0 the initial conditions are Tglass = 35 , Tpyr = 33, and Twax = 31 °C. Cold sappty In frem water Tank Glass PVT Enpann Nane-PCMPVT Collector Wax Tubes Sterg Tank Mat Nanofluid Heat Exchanger Tepe Contalner Tuek et Pump for drain
SCH 08 HW PSS 8.1: Static equilibrium problems To practice Problem Solving Strategy 8.1 Static equilibrium problems. When you at an object by moving only your forearm, the main lining muscle in your arm is the biceps. Suppose the mass of a forearm is 1.20 kg. If the biceps is connected to the forearm a distance du-3.50 cen from the elbow, how much force F must the biceps exert to hold a 750 g bal at the end of the forearm at distance du 30.0 ctn from the elbow, with the torearm parallel to the floor? How much force F must the elbow exert? (Doute 1) Figure dap Biceps Soull 1 of 1 Evaluate whether the answer you obtained for the force exerted by the biceps is reasonable ▾ Part J VAX Although it is uncommon, orthopedic surgeons have seen patients who have tom their biceps tendon when forces of greater than 390 N have been exeded on the tendon with the arm bent at the elbow so that the forearm is parallel to the ground. What is the minimum mass of a ball Af such a patient might have held…
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…
A Do Now- Work and Energy Tran: x + ure.com/courses/44384/assignments/1494085 Al. O Google Drive LTI TumingPoint-Parti.. 4 Roots, Multi, and Fu.. A Roots, Multi, and Fu. A Roots, Multi, and Fu. O https://student.pas. y = 0 h Write down an equation for the total energy in the system at point 1 and point 2, before and after the change in height and speed. Part 2- Complete the Table using the image above: Use the tables below to calculate the kinetic energy of the cart at point 2 for the following values: m=2,000 kg, h; = 30 m, hf= 16 m Point 1 (initial) Point 2 (final) Ep (J) Ex (J) Ep (J) Ek (J) ETotal J) ETotal (1)
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
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…