Engineering, 09.04.2020 19:24 chandranewlon
Carbon dioxide (CO2) gas undergoes a process in a closed system from T1 5 1008F, p1 5 20 lbf/in.2 to T2 5 4008R, p2 5 50 lbf/in.2 The entropy produced due to internal irreversibilities during the process is determined to be 0.15 Btu/8R per lb of gas. The carbon dioxide can be modeled as an ideal gas. Determine if the energy transfer by heat, Q, is positive (into the system), negative (out of the system), or zero.
Answers: 2
Engineering, 04.07.2019 18:10, winterblanco
The higher the astm grain-size number, the coarser the grain is. a)-true b)-false
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Engineering, 04.07.2019 18:20, cxttiemsp021
Atank with constant volume contains 2.27 kg of a mixture of water phases (liquid-vapor). in the initial state the temperature and the quality are 127 °c and 0.6, respectively. the mixture is heated until the temperature of 160 oc is reached. illustrate the process in a t-v diagram. then, determine (1) the mass of the vapor in kg at the initial state, (2) the final pressure in kpa.
Answers: 3
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