During the compression cycle of a diesel engine, the 0.5 L piston compresses, 100,200 Pa air at 33.85 °C to a volume which is 3.3 times smaller. Answer tolerance ±5 on the third significant digit. a) Determine the pressure of the air, when fully compressed. Number Units b) Determine the temperature of the compressed air. Number Units

During the compression cycle of a diesel engine, the 0.5 L piston compresses, 100,200 Pa air at 33.85 °C to a volume which is 3.3 times smaller. Answer tolerance ±5 on the third significant digit. a) Determine the pressure of the air, when fully compressed. Number Units b) Determine the temperature of the compressed air. Number Units

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.22P: 1.22 In order to prevent frostbite to skiers on chair lifts, the weather report at most ski areas...

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show complete solution please. thank you 3 kg of steam with quality of 30% has a pressure of 12.056 bar. At that pressure, the specific volume of a saturated fluid is vf= 1.5289 cm^3/g. The specific volume of a standard vaporis vg= 14.1889 cm^3/g. What is the specific volume of the steam?
Subject: Thermodynamics, Last student digit is 5, so T1= 225
1-specific heat of a substance, c, is by definition the heat required to lower the temperature of a unit mass of one degree2- specific heat of a substance, c , is, by definition, the heat required to raise the temperature of a unit mass by one degree3-specific heat of a substance, c, is, by definition, the heat required to raise the temperature of a unit mass by two degrees4-specific heat of a substance, c, is, by definition, the heat required to raise the temperature by three mass units by one degree5- specific heat of a substance, c , is, by definition, the heat required to raise the temperature of two mass units by two degrees choose only one of the above alternatives
the question from thermodynamics Oxygen (molar mass 32 kg/kmol ) expands reversibly in a cylinder behind a piston at a constant pressure of 3 bar. The volume initially is 0.01 m3 and finally is 0.03 m3; the initial temperature is 18.97 0C. Calculate the mass of oxygen with the correct unit to four decimal places. Assume oxygen to be a perfect gas and take the specific heat at constant pressure as = 0 . 9 1 7 k J / k g K and molar gas constant as = 8,314 J / kmol K
1.22 In order to prevent frostbite to skiers on chair lifts, the weather report at most ski areas gives both an air temperature and the wind-chill temperature. The air temperature is measured with a thermometer that is not affected by the wind. However, the rate of heat loss from the skier increases with wind velocity, and the wind-chill temperature is the temperature that would result in the same rate of heat loss in still air as occurs at the measured air temperature with the existing wind. Suppose that the inner temperature of a 3-mm-thick layer of skin with a thermal conductivity of 0.35 W/m K is and the air temperature is . Under calm ambient conditions the heat transfer coefficient at the outer skin surface is about (see Table 1.4), but in a 40-mph wind it increases to . (a) If frostbite occurs when the skin temperature drops to about , do you advise the skier to wear a face mask? (b) What is the skin temperature drop due to the wind?
Convert 22C to Fahrenheit.
The previous Bartleby person that answered my questions BUT I dont understand were he got the answers from . I NEED HELP to replicate. I have ticked the parts I understood and been able to replicate. Given the table of results find the following. Give answers in KW. Please show all working out Rate of heat transfer to evaporator from the chilled water: Answer : 0.60KW ✓ Rate of heat transfer from condenser to the cooling water: Answer : 0.764KW ✓ Rate of heat transfer to refrigerant in “Evaporator” using enthalpy values: Answer: 1.5: I DON’T UNDERSTAND the answer given – see below Rate of heat transfer from refrigerant in “Condenser” using enthalpy values Work input from the compressor to the refrigerant using enthalpy values The previous Bartleby answer stated that at P1 =288 KPa and T1 =3.48 h1= 253.66 KJ/Kg P2 =823 KPa and T2 =65 h2= 301.48 KJ/Kg Given P3 =815 KPa and T3 =30.4 h3= 94.2 KJ/Kg (I don’t understand where the 94.2 comes from) P4 =294 KPa…
THERMODYNAMICS UPVOTE WILL BE GIVEN. PLEASE WRITE THE COMPLETE SOLUTIONS/DIAGRAMS LEGIBLY. NO LONG EXPLANATION NEEDED. USE 3 DECIMAL PLACES. BOX THE FINAL ANSWER. A pump discharges into a semi spherical tank at the bottom and cylindrical on top with a radius of 2 meters, and a total tank height of 8 meters. The flow rate is 80 gallons per minute and fluid specific gravity= 1.1. Determine the following: A) flow rate in kg/sec and time it takes to fill the tank in hours. Flow Rate and Time
Given the table of results, find the following. Give answers in KW. Please use tables and state which table you used Please show all working out Rate of heat transfer to evaporator from the chilled water: Answer : 0.627 kW ✓ Rate of heat transfer from condenser to the cooling water: Answer : 0.81kW✓ Rate of heat transfer to refrigerant in “Evaporator” using enthalpy values: Rate of heat transfer from refrigerant in “Condenser” using enthalpy values Work input from the compressor to the refrigerant using enthalpy values. Answer: 0.470kW ✓ COP from enthalpy changes across work input and evaporator COP from motor electrical power input as work and rate of heat transfer to the chilled water
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?
Water at 210°C is heated, which increases the internal energy of the water by 1000 kJ/kg. Initially the quality of the system is 0.9. What is the final temperature, in °C, if the final pressure is 1.8 MPa? Report your answer to one decimal place.
Provide a complete given and computation. Include all the decimals. Steam engine with incomplete expansion receives saturated steam at 1.04 Mpa, expands it to 0.105 Mpa where release occurs. Exhaust is to a condenser at 40C. The actual engine uses 6070 kg/h of steam; it has a brake engine efficiency of 60% and a mechanical efficiency of 85%. The electric generator which it drives has an efficiency of 92%. (a) the indicated work in kW, indicated thermal efficiency and indicated steam rate, (b) the combined thermal efficiency and the combined steam rate.