Engineering, 19.01.2021 18:50 natalie2sheffield

A vertical piston/cylinder device contains 0.01 lbm of gas. The gas has an initial volume of 0.18 ft3 and initial specific internal energy of 282 Btu/lbm. The piston, with a mass of 110 lbm and cross-sectional area of 0.11 ft2 , is in equillibrium with the gas. The outside ambient pressure is 14.7 psia. The gas now undergoes a process in which the volume increases to 0.4 ft3 . The final specific internal energy is 316 Btu/lbm. Assume a quasi-equillibrium process in which piston movement is slow with no acceleration. Friction between the piston and cylinder is negligible. a. Determine work [Btu] during the process (magnitude and direction)
b. Determine heat transfer [Btu] during the process (magnitude and direction)

Answers: 3

Show answers

Other questions on the subject: Engineering

Engineering, 03.07.2019 14:10, makaylashrout77

Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.

Answers: 2

continue

Engineering, 04.07.2019 18:10, qwertylol12345

Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.

Answers: 2

continue

Engineering, 04.07.2019 18:10, Fahaddie

The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length

Answers: 2

continue

Engineering, 04.07.2019 18:10, soreese02

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature

Answers: 2

continue

You know the right answer?

A vertical piston/cylinder device contains 0.01 lbm of gas. The gas has an initial volume of 0.18 ft...