Two heat engines are connected in series in st such a way that rejected heat of 1 engine is directly feed to 2nd engine. If the source temperature is 1600 K and sink temperature is 400 K. Then calculate intermediate temperature If both the engine produces the same work. A 800 K В 1000 K C 600 K D None of the above
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- Refrigerators currently being manufactured in the United States are using______as their refrigerant.Suppose a heat engine absorbs 10.0 kJ of heat from a hightemperature source at Th = 450 K and discards heat to a lowtemperature reservoir at Tl=350 K. Calculate the thermodynamic efficiency, e, of conversion of heat to work; the amount of work performed, -wnet; and the amount of heat discharged at Tl , qCD.a.) The expansion ratio during the isobaric heat addition process in an Ericsson Cycle is 3.5. Determine the Thermal Efficiency in (%) b.) The pressure ratio during the constant volume heat addition of a Stirling Cycle is 4. What is the thermal efficiency in (%)? PLS ANSWER IT CORRECTLY
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- A cyclic heat engine operates between a source and sink that are respectively attemperatures of 1000 0C and 50 0C. Draw the diagram, calculate the efficiency of the heatengine and the rate of heat rejection per kW net output of the engine.A solar tower power plant with an electric power output Pel of 40 MW and an electrical efficiency ηel of 20% uses an SHS with a thermal capacity sufficient for the plant operation duration τ = 5 h a day. The storage medium has a specific heat c of 1.1 kJ/kg K. Its temperature varies in a storage cycle from tmin of 290°C to tmax of 395°C. Calculate (a) the required thermal capacity of the storage, (b) the storage energy density, and (c) the required mass of storage medium.A 75-kW refrigeration load is to be carried by an air refrigerating system with a discharge pressure of 1,370 kPa and a refrigerator pressure of 345 kPa. Compression and expansion processes are polytropic with n = 1.37. The pressure at the start of expansion is 1344 kPa and the temperature is 32OC. Air temperature leaving the refrigerator is 0OC and entering the compressor is 5OC. Clearance for both compressor and expander is 5%. Draw the (a) Schematic diagram, (b) the P-V diagram and (c) the T-S diagram. Determine (d) the piston displacement of the compressor, (e) the piston displacement of the expander, (f) the net work and (g) the COP