Does a Liquid-Dominant Geothermal Power Plant need both a condenser and a cooling tower? Or will either one do? And why
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Q: actual Qout
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Does a Liquid-Dominant Geothermal Power Plant need both a condenser and a cooling tower? Or will either one do? And why.
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- Why is two-stage compression popular for extra-low-temperature refrigeration systems?Can you imagine a steam power plant working without steam condenser, letting the turbine throw its exhaust steam away into the ambient air? Discuss the consequences of such stupid idea.In a steam power plant, steam enters at 8 MPa and 550 C, the condenser pressure is 8 kPa, and the net power out of the plant is 100MW.
- In the preliminary design of a power plant, water is chosen as the working fluid and it is determined that the turbine inlet temperature may not exceed 520C. Based on expected cooling water temperatures, the condenser is to operate at a pressure of 0.06 bar. Determine the steam generator pressure required if the isentropic turbine efficiency is 80% and the quality of steam at the turbine exit must be at least 90%.Consider a steam power plant operating on a simple Rankine cycle. Steam enters the turbine at 15 MPa and 650°C and is condensed in the condenser at a pressure of 15 kPa. Assuming an isentropic efficiency of 84% and 86% for the pump and turbine, respectively, determine the actual Qin (kJ/kg). (Use 2 decimal places for the final answer.)Consider a steam power plant operating on a simple Rankine cycle. Steam enters the turbine at 15 MPa and 650°C and is condensed in the condenser at a pressure of 15 kPa. Assuming an isentropic efficiency of 84% and 86% for the pump and turbine, respectively, determine the actual thermal efficiency (%). (Use 2 decimal places for the final answer.)
- Consider the following ideal cascade refrigeration system with pressures of 0.9, 0.4, and 0.12 MPa.If the lower cycle transfers 69kW of energy to the upper cycle, determine the mass flowrate of R-134A (in kg/s) in the upper cycle. a.0.3987 b.0.4114 c.0.3600 d.0.4480Consider a steam power plant operating on a simple Rankine cycle. Steam enters the turbine at 15 MPa and 650°C and is condensed in the condenser at a pressure of 15 kPa. Assuming an isentropic efficiency of 84% and 86% for the pump and turbine, respectively, determine the actual Qout (kJ/kg). (Use 2 decimal places for the final answer.)Write legibly, provide manual step by step solution, and diagram for below given problem. A supercritical power generates steam at 25 Mpa and 560. The condenser pressure is 7 kpa. Determine the exit quality of steam if it expands through a turbine in this power plant. a. 45.66% c. 56.66%b. 68.45% d. 74.26%
- Consider a refrigeration system using refrigerant-134a as the working fluid. If this refrigerator is to operate in an environment at 20°C, what is the minimum pressure to which the refrigerant should be compressed? Why?Consider a steam power plant operating on a simple Rankine cycle. Steam enters the turbine at 15 MPa and 650°C and is condensed in the condenser at a pressure of 15 kPa. Assuming an isentropic efficiency of 84% and 86% for the pump and turbine, respectively, determine the actual Wnet (kJ/kg). (Use 2 decimal places for the final answer.)A turbine with one extraction for regenerative feedwater heating, receives steam with an enthalpy of 3373 kJ/kg and discharges it with an exhaust enthalpy of 2326 kJ/kg. The ideal regenerative feedwater heater receives 11,338 kg/h of extracted steam at 345 kPa (whose h= 2745 kJ/kg). The feedwater (condensate from the condenser) enters the heater with an enthalpy of 140 kJ/kg and departs saturated at 345 kPa (h=582 kJ/kg). Find the work turbine output in kW.