123638 Heat

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6 How does the temperature of the gas in the isobaric and adiabatic expansion? Response charts illustrate processes pv- and TS-diagrams
15 What is called the humid air? Give the definition of moisture content, relative humidity and dew point temperature
Task 6
To determine the polytropic exponent of air compression in a single-stage reciprocating compressor, if the pressure increases in the process β = 5 times, and the gas temperature varies from 20 0C t1 = t2 = 95 to 0C. Identify and process heat, work process change in internal energy and entropy of 1 kg of gas
Target 11
Determine condition parameters 1 kg of air at the end of its adiabatic expansion of the pressure p1 = 0.9 MPa to 0.1 MPa = p2. Identify and work in process and the change in internal energy of the air. The initial temperature t1 = 27 0C
Task 21
The internal combustion engine cylinders is sucked 200 kg of air per hour at a pressure B = 745 mm Hg, the temperature t = 14 0 C and relative humidity φ = 80 0C. How much water is sucked into the engine hour?
Problem 26
To determine the main parameters of the working body in the transition points of the ideal cycle piston internal combustion engine with a mixed supply of heat and compression ratio, thermal efficiency and useful work, given the cycle characteristics λ = 2, ρ = 1,3. The starting point of the cycle P1 = 0.1 MPa and t1 = 67 0C. The temperature at the end of the process of adiabatic compression of the working medium is 600 0C. Tools body - 1 kg dry air. Show cycle PV- and TS - coordinates


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