What is the final temperature of the system? Write and simplify the energy balance for process. Clearly state any assumptions. a) b) c) system during the process? $]: Using your answer from (b), how much energy was added or removed from the
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- 1. Energy consumption in a country from 2001 to 2011 increased from 1041.3 million to 1526.1 million BOE (barrels of oil equivalent). If the high calorific value (HHV) of the oil is 141,000 kJ/gallon what is the increase in energy consumption over 10 years in Joule units. What is the rate of energy consumption per year? 2. Based on data on the rate of energy consumption per year from question no. 1, if the growth rate energy 2.5% per year, calculate the doubling time (td) and what is the approximate rate of energy growth in 2021.A-3.2. Suppose a large tank of water with a temperature of just over 0 Cwe put in a 100 g ice cube. When the ice melts, it absorbs 33 kJ of heat. What is theentropy change of a) (ice) system, b) environment (water tank)?For a certain gas R=0.277 KJ/kg.K and k=1.384, (a) what are the value of Cp and Cv? (b) What mass of this gas would occupy a volume of 0.425 m3 at 517.11 kPa abs and 26.7 OC? (c) If 31.65 kJ of heat are transferred to this gas at constant volume for letter (d), what are the resulting temperature and pressure? Show Illustration
- A tank contains 100 gallons of brine. Three gallons of brine, each containing 2 pounds of dissolved salt, enter the tank each minute, and the mixture, assumed uniform, leaves at the rate of 2 gallons per minute. If the salt concentration in the tank is 1.6 pounds per gallon at the end of 1 hour, what was the initial concentration?The ideal gas law relates the pressure P, volume V, absolute temperature T (Kelvin), and amount of gas n. The law is P = mAT where R is the gas constant. An engineer must design a large natural gas storage tank to be expandable to maintain the pressure constant at 2.2 atmospheres. In December when the temperature is -15°C, the volume of gas in the tank is 28,500 ft°. What will the volume of the same quantity of gas be in July when the temperature is 31°C? (Hint: Use the fact that n, R, and P are constant in this problem. Note also that Kelvin = °C+273.2)A work group of 5 workers in a certainmonth produced 500 units of output working 8hr/day for 22 days in the month. (a) Whatproductivity measures could be used for thissituation, and what are the values of theirrespective productivity ratios? hint (moth, day,and hours) (b) Suppose that in the next month,the same work group produced 600 units butthere were only 20 workdays in the month.Using the same productivity measures asbefore, determine the productivity index usingthe prior month as a base.
- Completely solve and box the final answers. Write legibly 4. A single stage air compressor handles 30 cubic meter per minute of atmospheric pressure, 30°C air and delivers it to a receiver at 3.0 mpa. Its volumetric efficiency is 83.0%, compression efficiency of 83.0% and mechanical efficiency of 80.30%. If it rotates at 300 rpm, what power in kW is required to drive it?I. Multiple Choice. Write the complete answer on the answer sheet (ex. 1. a. answer )1. The equation CP = CV + R applies to which of the following?a. Enthalpyb. Ideal gasc. Two phase statesd. All pure substance2. In the flow process, neglecting kinetic and potential energies, the integral of Vdprepresents what?a. Heat transferb. Flow energyc. Enthalpy changed. Shaft work3. Mechanical energy of pressure transformed into energy of heat.a. Kinetic energyb. Enthalpyc. Heat exchangerd. Heat of compression4. If the pressure of a gas is constant the volume is directly proportional to theabsolute temperature.a. Boyle’s lawb. Joule’s lawc. Charles’s lawd. Kelvin’s law5. Work energy can be a function of all the following except:a. Force and distance b. Power and timec. Force and timed. Temperature and entropyLemar Supermarket sells about 200 000 kilos of milk annually. The milk ispurchased for 4 MU/kg. Holding costs are 1.40 MU/kg/yr. Each order costs 35 MU. If theshelf life of the milk is only 5 days, how many kilos should be ordered at a time. Please mention formulas and do it in detail so I can understand.
- You run the same type of experiment with an unknown mass of silver that began at 75.0˚C and had a final temperature of 32.5˚C. If the silver was placed in 0.325 kg of water at an initial temperature of 20.0oC, what was the mass of silver used? (cAg= 235 J/kg°C)The friction force F on a smooth sphere falling in water depends on the sphere speed V, the sphere density ρ_s and diameter D_s, the density ρ and dynamic viscosity μ of the water, gravitational acceleration g. Choose the correct repeating variables. sphere diameter, dynamic viscosity, gravitational acceleration density, gravitational acceleration, dynamic viscosity friction force, gravitational acceleration, density density, sphere speed, sphere diameter friction force, sphere speed, sphere diameterTopic : Mixture Flow Problem A tank initially holds 100 gal of salt solution in which 50 Ib of salt has been dissolved. A pipe fills the tank with brine at the rate of 3 gpm, containing 2 lb of dissolved salt per gallon. Assuming that the mixture is kept uniform by stirring, a drain pipe draws out of the tank at 2pm. Find the amount of salt at the end of 30 minutes. Ans. 171.24 Ib