3) If the measurement parameters of a refrigeration machine are known, the amount of heat for liquid refrigerant (mix) when it enters the evaporator is 650 Btu/lb, the amount of heat for vapor refrigerant after it comes from the evaporator is 950 Btu/lb, and the amount of heat for superheat refrigerant after being compressed is 1280 Btu/lb. lb. Calculate the efficiency of the refrigeration machine?

Q: Consider the arrangement shown in Fig. 1. For this setup the streams of air and water flow are…

A:

Q: Water at a temperature of 400oF has a quality of 0.7. The internal energy of the water is ________…

A: given temperature ofwater , T=400oF=204.444oCquality, x=0.7

Q: 1.1 Determine the electrical power supplied to a boiler when the temperature of the entering water…

A: Consider the following diagram for the boiler system, the heat input is Ql and heat loss from the…

Q: The figure below provides steady-state operating data for an ideal vapor-compression refrigeration…

A:

Q: You are replacing an HVAC system in your building. The system is a hot water system that consists of…

A:

Q: 1 out of 3 attempts When a man returns to his well-sealed house on a summer day, he finds that the…

A:

Q: Consider a conventional piston-cylinder system. Compute the work required to compress air to 0.2 m3…

A:

Q: Sketch the cycle on ap−vdiagram. Considering a mass of air ofm= 0.5 kg, andassuming air as ideal…

A:

Q: select if true or false for the following questions  1.  For a standard condenser in a…

A: as per our guidelines we are supposed to answer only one question. Kindly repost other questions as…

Q: a.Which of the following appropriately describes the pumping energy efficiency when a pump is…

A: please refer handwritten solution

Q: The figure 1 above presents a crudely simplified centralised water heating system. The system…

A:

Q: Superheated steam at 90 bar, 625 °C (State 1) undergoes a 3-step process: (i.) First, it is…

A:

Q: Calculate the efficiency of a steam turbine system with the following flow conditions: Steam…

A: Steam entering the turbine:  Saturated steam, P2= 2000 kPa Steam entering the condenser: P3= 7.5 kPa…

Q: The cost of electricity to operate a compressor for one year can exceed the purchase price of the…

A: Given Compressor To find Verify the condition when the cost of operation of compressor can exceed…

Chemical and Phase Equilibrium

Phase diagrams or equilibrium phase diagrams are the graphical representations that show the phase transformations of the constituting elements with respect to the pressure, temperature, and compositions. The diagrams show the conditions that limit the different phases, namely solid, liquid, and gas. The diagram can also be utilized to verify the relations between the state variables. Most of the phase diagrams are temperature-pressure phase diagrams, with the variable parameter as the composition. Usually other variables such as solubility and pressure parameters are not indicated in the phase diagram. For a one-component system (unary phase diagram), the phase diagram is generally a function of temperature and pressure as the state variables, or temperature and volume. However, for a binary system (two-phase) having two components, the phase diagram is a function of temperature and composition as the state variables only. Coexisting of the different phases of the constituting elements is indicated in the phase diagram. A ternary phase diagram can be characterized by consisting of three phases in equilibrium.