Question

An air-standard Carnot cycle is executed in a closed system between the temperature limits of 350 and 1200 K. The pressures before and after the isothermal compression are 150 and 300 kPa, respectively. If the net work output per cycle is *

Answer 1

The question addresses the concepts of the Carnot cycle and Carnot engine in thermodynamics, exploring efficiency, heat exchange, and work output in various scenarios.

Step-by-step explanation:

The question is about the Carnot cycle, which relates to thermodynamics in physics. Specifically, the question deals with calculating various properties of a Carnot engine, including the efficiency, the amount of heat removed from the hot reservoir, and the work done by the engine per cycle. It also involves understanding how the concept plays out in other scenarios like refrigerators and heat pumps, as well as the underlying principles behind the Carnot cycle.

Answer 2

Pmax = 30MPa

The heat input required Qin = 0.706KJ

The mass of air m = 0.00296kg

Step-by-step explanation:

The step by step solution to this problem can be found in the attachment below.

A Carnot cycle with specified temperature limits is considered. The maximum pressure in the cycle, the heat transfer to the working fluid, and the mass of the working fluid are to be determined. Assumptions

Air is an ideal gas with variable specific heats.

Analysis

(a) In a Carnot cycle, the maximum pressure occurs at the beginning of the expansion process, which is state 1.