A standard Carnot heat engine cycle is executed in a closed system between the temperature limits of 320 and 1350 K, with air as the working fluid. The pressures before and after the isothermal compression are 150 and 300 kPa, respectively. Sketch the TS diagram for this cycle. If the net work output per cycle is 0.75 kJ, determine the efficiency of the cycle and the heat transfer to the air (working fluid) per cycle.

Diesel Cycle: 15. A Diesel Cycle has a cut-off ratio of 2.5 and the volume at the beginning of Heat addition is 0.05 m3/kg. Find the efficiency of the cycle if the net work of the cycle and mean effective pressure is 900 KJ/KG and 950 KPa respectively.

The net work output and the thermal efficiency for the Carnot and the simple ideal Rankine cycles with steam as the working fluid are to be calculated and compared. Steam enters the turbine in both cases at 5 MPa as a saturated vapor, and the condenser pressure is 50 kPa. In the Rankine cycle, the condenser exit state is saturated liquid and in the Carnot cycle, the boiler inlet state is saturated liquid. Draw the T-s diagrams for both cycles.

Carnot cycle heat pump utilizes R-134a as the working fluid. Heat is transferred from the fluid at 100 F, and during this process the refrigerant changes from saturated vapor to saturated liquid. Heat transfer for the refrigerant takes place at 20 F. You are asked to do the following: (a) Show and describe the cycle on a T-s diagram (b) Calculate the quality at the beginning and at the end of the isothermal process at 20 F (c) Determine the coefficient of performance for the cycle.

In a test of cycle steam power plant, the measured rate of the steam supply was 7.1kg / s when the net rate of work output was 5000Kw. The feed water was supplied to the boiler at a temp of 38 ° C, and the superheated steam leaving the boiler was at 1.4 Mpa and 300 ° C. Calculate the thermal efficiency of the cycle and the heat rate, what would be the heat rate when expressed in BTU of heat input per kWh of work output.

An air standard Carnot Cycle, is executed in a close system between the temperature limits of 350K and 1250K. The pressure before and after the isothermal compression are 150kPaa and 300kPa respectively. If the net work output per cycle is 0.80kJ, determine the following: (a) mass of air (kg), (b) thermal efficiency of the cycle (%), (c) Work of compression (kJ), (d) Work of Expansion (kJ), (e) heat added in the system (kJ) and (f) heat rejected by the system (kJ).

A vapor compression refrigeration cycle operates at steady flow conditions with 0.25kg/s or R-134a. The table below shows some of the operating parameters andproperties for the refrigerant. The compressor is refrigerated, and the condenser is alsocooled with water. The compressor receives shaft power equivalent to 7.5 hp.Neglecting changes in kinetic and potential energy changes and any heat loss betweendevices, please answer the following. I understand how to fill the values but I get lost after that, need some help.

A vapor compression refrigeration cycle operates at steady flow conditions with 0.25kg/s or R-134a. The table below shows some of the operating parameters andproperties for the refrigerant. The compressor is refrigerated, and the condenser is alsocooled with water. The compressor receives shaft power equivalent to 7.5 hp.Neglecting changes in kinetic and potential energy changes and any heat loss betweendevices, please answer the following.a. Complete the table below and sketch the cycle processes on a T-s diagram.When completing the table please use the same number of decimal places as inthe tables.b. Determine the cooling capacity of the refrigeration unit, in Tons (1 refrigerationTon = 211 kJ/min).c. Compute the COP.d. Determine the volume flow rate of refrigerant entering the condenser in L/min.e. Determine the mass flow rate of cooling water passing through the condenser.f. Determine the heat transfer rate from the compressor.g. Compute the rate of entropy generation in the…

* A refrigerator uses refrigerant - 134s as a working fluid and operates on a ideal vapour compression cycle. The Low Pressure is 2 bars and the high pressure is at 6 bars. 1.) Plot a qualitative Sketch of the T-s diagram of the cycle 1.) Specify the four processes involved in the cycle and write the 1st Law of thermodynam is for each one of them 1) Calculate the work needed by the compressor at the compression Stage iv.) Calculate the heat removed from the cooling Chamber.

Steam Plant A steam power plant operates according to the Rankine cycle between a boiler pressure of 4 MPa and condenser pressure of 6.5 kPa. The steam has a temperature of 380 °C at inlet to the first turbine. It is just dry saturated on leaving this turbine for reheating to its original inlet temperature, before passing through a second turbine to the condenser. Draw a T-s diagram to illustrate the reheat cycle, neglect feed-pump terms and calculate the Rankine efficiency and specific steam consumption.