A Piston and cylinder device containg 12K9 of water Carries out a correct is is Powercycle, the maximum pressure 2mpa and the minimum Pressure 110kPa, During the isothermal expansion the water is heated 14% until it is a quality of from a Saturated vapour, The de Produces 500 kJ/kg of work, during The Adiabatic expansion. a) sketch the Process Path of the cycle on 9 P-V dragam. 3) Calalate and w in KJ for each process on the cycle c) calculate the thermal efficiency of the cycle.

Process during heat addition and heat rejection for Carnot cycle and Rankine cycle?

I have been working on this problem for a while but I need to figure out how to get the specific enthalpy when the refridgerant exits the system to find the mass flow rate of when the refridgerant exits the system but I don't know how to do this

Find the quanity of heat required to produce 79% dry steam at 8000 kpa from feedwater at 50 degrees celcius ?.

a b c d e

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A Cold Store maintains a storage temperature minus 23c in an ambient of 27°c.The plent is fittes with a Gtngle 4-Cylinder compressors haseing a bore Gf 150mnm, stroke loonm, seeed 25rev/s ons lrolumetric efficiency of 806.14 operutes with reftigerant 13Ha and has 50%o, the discharg e gas temperature is 8O°C, evaporating temperature is foe 30°c, condensing temperenture H&c and suction gas super heat loC 1By using tRollier chat; Determane the following of a CarnA efficiency of 0- Isentropic officiency of compres8or 0. power Comsumptron of eompreffor Q. Condenselte Seed - cooing D. If the Compressar driken by an electric moter of 8s% efficion cy and electricity is produced from erimary fuel with efficiency of Holowhat is the emant of primary fuel energy input, in KT per hour, required to run the ploent. D. Define ar condittoning and lst the four conditions that air Conditioning Contrors

I need the workings ASP the answers are there  questionn 4 4.  A boiler produces 6 tonnes/hour of steam at a pressure of 1.8 MPa and a temperature of 250ºC.Feedwater enters at a temperature of 39ºC. At exit from the economizer part of the boiler thetemperature is 72ºC. At exit from the evaporator part of the boiler the steam is 90 % dry.Energy is supplied by 650 kg of coal per hour, which has a calorific value of36 MJ/kg. The A/F ratio is 25 : 1. The temperature of the flue gas at entry to the economizerpart of the boiler is 430ºC. The average specific heat at constant pressure of the flue gas inthe economizer is 1045 J/kg.K.4.1 Calculate the efficiency of the boiler.      [70.5 %] this one is the answer 4.2 Draw up an energy balance, on a kJ/kg coal basis, with percentages of the total energysupplied.            [economizer 3.6 %, evaporator 59 %, superheater 8 %,other 29.4 %]

Ao air turbine with one intet and one exit operates at Steady State, and has heat trans fer to the Surroundings at an average 3.0x' 10" J per ka of air flowing. The inlet conditions are 980°K and 400 kPa, and the exit conditions are 670°k and 100 kla. Neglect kinetic and potential energy e ffects and use the ideal gas madel without assumung constant specific heats, to calculate the entropy producHon per mass of air flowing. Pres ent your answer in kJ/ (kgʻk) wsing 5 Signifigant figures. outer surface temperature of 315°k ät the rate of

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