Consider the heat pump cycle outlined above. If the C.O.P. of the cycle is reported to be Y = 6.0 and the work input to the system is found to be W;in = 10.30 Btu, determine the heat transferred into the system during cycle, Qin (Btu). %3D !!
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- 3 A rigid tank with volume of 1 m contains 2 kg of water at 100 C. The tank is now heated. If a safety pressure valve is installed, at what pressure should the valve be set to have a maximum temperature of 200 C? 00 Select one: on O a. 534.33 b. 478.83 Oc.592.43 Od.431.42 Oe None of the above Electric heateris used to heat 0 63 liters/minute of water (C, = 4.18 kJ/kg.K, density =1000 kg/m) from 25 °C to 65 C What is the current (in Ampéres) that must be supplied to this heater if the supplied voltage is 220 vered of 2.00 eslion Select oner 0a 10.37 O6 11 97This course EHide blocks In the Mechanical Heat Pump experiment, the following data were collected, the COP will be equal to: the water mass the water inlet the water outlet power input Cpw (watts) flow rate (g/s) temperature (°C) temperature (°C) (kJ/kg.K) 25 20 33 350 4.180 Select one: O a. 2.57 O b. 0.257 O c. 3.88. O d.0.388 In the first stage of the process in the "Perfect Gas Law Demonstration" experiment, and when operating with theWrite 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.
- 2) The following heating system for a room is considered: ATroom = K1 | Qodt, Qo = Qin - Qout Qout = K2AT,0om room Qin = K3(ATrad – ATr00m) where AT is the room temperature and AT is the radiator temperature. What is room rad the stationary room temperature, if the radiator temperature is 50C and if K1 = 104, K2 = 4, and K3 = 1? A. 40°C В. 20°C С. 10°C D. 30°C Е. None of the previous answers are correct.desired output rate is 75 units I have a pnocess ar follons: have a y: process ar follows Task Time (seconds) Predecessor None 45 A 30 None A,B 45 B 20 10 17 D,E 40 my desired output rate is 75 units hour, what is per the efficiency of y setup? Aniwer to 20eemals. my you nd the c tall in ow value you eted Val ween Id be zer no differ sauare St eused for statistical v ed to Conve hore alrela1:09 PM O FINAL EXAMINATION IN ME 324 6 of 10 47:48 / 03:00:00 A test on a single-cylinder, four-stroke cycle gasoline engine yielded the following data: Torque = 950 N m Indicated mean effective pressure = 759 kPa, Bore = 28 cm, Stroke = 30.5 cm, Speed = 300 rpm, Fuel consumption = 10.9 .and hr Heating value of the fuel = 41,900 Determine the kg Mechanical efficiency 83.73 % 81.49 % = 79.52 % 77.79 % Next » II
- 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…Solve using the Mollier Diagram. Plot the data and how you got the data (process how you used the diagram) to determine the items below. Please only use this Mollier diagram below and show process by drawing on it. Thank you Steam enters a turbine at 3.0 MPaa and 700 deg. C and expands isentropically to 0.098325 MPavac. Steam = 4.5 undergoing an irreversible adiabatic process under the same properties, determine: f) actual entropy at steam outlet. Ans g) Actual temp. of steam at the exhaust. Ans. h) irreversible adiabatic expansion efficiency. Ans. i) AS for irreversible adiabatic process_ (Please solve all subparts, this is my last question. Thank you)Solve using the Mollier Diagram. Plot the data and how you got the data (process how you used the diagram) to determine the items below. Please only use this Mollier diagram below and show process by drawing on it. Thank you Steam enters a turbine at 3.0 MPaa and 700 deg. C and expands isentropically to 0.098325 MPavac. Steam = 4.5 undergoing an irreversible adiabatic process under the same properties, determine: (a) the actual work done (KJ) if AKE = 0 and h2' = 2,400 KJ/kg; Ans: (b) Determine the following: actual quality at exhaust. Ans: c) Ideal turbine work. Ans: d) Ideal steam temp at the exhaust. Ans._ e) Degree Superheat of the steam at turbine inlet. Ans_ (I only have this one question left. thank you)
- 9.5.29 Question He Find the work W done by a force of 3 pounds acting in the direction 45 to the horizontal in moving an object 7 feet from (0 0) to (7,0) . foot-pounds Round to the nearest whole number as needed) %3D 用 Enter your answer in the answer box and then click Check Answer All parts showing School a for nk6xemh85d.execute-api.us-east-1.amazonaws.com... EXb) Determine the energy transport rate for the system shown in Figure below. Fuel flow Top heat loss Exhaust flow Epuet15,000 Btu/min Eethaut500, Btu/min 180,000 Btu/h System boundary Engine-generator set 200. hp Bottom heat loss 54,000 Btu/h 50.0 hp Electrical workoutThe 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