A condenser takes in steam with enthalpy of 2450 kJ/kg and mass flowrate of 2 kg/s. It also discharges water at 20 kPa. What is the rate of heat removal of this system?
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A condenser takes in steam with enthalpy of 2450 kJ/kg and mass flowrate of 2 kg/s. It also discharges water at 20 kPa. What is the rate of heat removal of this system?
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- An ammonia refrigeration compressor takes its suction from the evaporator, at a temperature of-200F and a quality of 95%. The compressor discharges at a pressure of 100 psi, liquid ammonia leaves the condenser at 500F.(a)Determine the heat absorbed by the evaporator in kJ/kg. (b)Determine the heat rejected to the condenser in kJ/kg. (c)Determine the COP. (d)Determine the horsepower per ton of refrigeration. (e)Determine the quality of refrigerant upon entering to the evaporatorA refrigeration system is to be used to cool 45,000kg water for 32 Celsius to 19 Celsius in 5 hours. The refrigerant is R-134A and the operating condition are evaporating pressure 810 kPa and 1800 kPa liquefication pressure. Determine COP, quantity of cooling water in the condenser for an increase in temperature of 7 Celsius compressor power, volume of flow rate entering the compressor. With schematic diagram. Using this table https://www.docdroid.net/VkxK8WH/refrigerant-134a-pdfI need help on the following question: The vapour compression cycle (picture provided), utilises the refrigerant R134a flowing at 0.05 kg s-1. Assuming that the compression is adiabatic and reversible. If the actual input power to the compressor is 2 kW, then: 1. You need to determine the theoretical input power to the compressor and the heat transfer (Φ) to theevaporator. Take the enthalpies h1, h2, and h3 to be 238.41, 263.68 and 81.5 kJ kg-1 (use the 'NH3 Refrigeration Table' where you can find online). 2. You need to determine the coefficient of performance based on your answer to the previous question (1). 3. You need to determine the compressors mechanical efficiency.
- An ammonia simple vapor operates between evaporator and condenser temperature of -20°C and 35°C respectively. The system used producing 5000kg of ice in 20hrs. A 100x200mm compressor with a compression efficiency of 80% and electric input to the motor driving the compressor is 14kW. Motor efficiency is 90%. Determine: (a) Qe (b) Work indicated (c) Brake work (d) Mechanical efficiencyCan I ask for the schematic diagram of this? and also the Ts diagram and Ph diagram. Thank You! Catalogue data for R-32 compressor with a displacement of 80 L/s show the capacity to be 8 tons when the suction conditions are 0.2 MPa and -20°C and condensing temperature is 50°C. The refrigerant leaves the condenser as saturated liquid. Calculate the actual volumetric efficiency and the brake work of the compressor if the compressor efficiency is 65%.In an ammonia refrigerator , the pressure in the evaporator is 267. 58 KPa and theammonia at is 0.14 dry while at the exit is 0.86 dry . During compression the work done per kgof ammonia is 20 ,000 kg .m . Calculate volume of the vapor entering the compressor per minuteif the rate of ammonia circulation is 6.54 kg. The compressor has a volumetric efficiency of 90%and it runs at 150 rpm .The ratio of stroke to bore is 1 .Latent enthalpy of ammonia at basedon its evaporating pressure is 320 Kcal per kg and its latent specific volume of ammonia basedon its evaporating pressure is 0.436 m3 per kg .Specific volume of ammonia .A) 2.23 C) 2.46B) 3.23 D) 4.62
- A refrigeration system using R-22 has a capacity of 320 kW of refrigeration. The evaporating temperature is -10C and the condensing temperature is 40C.Calculate the fraction of vapor in the mixture before the evaporator.THERMODYNAMICS A condenser (cooler) takes 0.05 kg/s of R-134a at 200 kPa and 80 degrees Celsius and cools it to 10 degrees Celsius. Assume the exit properties are the same as those of a saturated liquid with the same T. What cooling capacity (kW) does the condenser need to have?A (1.5 kg/s) of water vapor inters a condenser at (20 kPa and 60°C), and exit with (h= 251.5 kJ/kg). Find: a) The mass flow rate of water flow at the exit sections b) The rate of heat removed from the water in the condenser From table T=90C & P=70 kPah=2660 kJ/kg
- Pls answer thank you! Steam enters the turbine at the rate of 2.5 kg/s with enthalpy of 3200 kj/kg and exhaust enthalpy of 1100 kj/kg . Steam is extracted from the turbine at the rate of 1 kg/s for heating purposes with enthalpy of 2750 kj/kg. What is the turbine work in KW.1. A deaerator heater supplies 150 L/min of deaerated feedwater into a booster pump at 115 oC pumping temperature. The heater pressure is maintained at 100 kPag by bleed steam. Pump centerline is located 1 m above the floor level. Suction line losses is 0.60 m. Determine the minimum height of water level in the heater that must be maintained above the centerline of the pump to avoid cavitation, if the pump to be installed has a required suction head of 5.8 m.Show also the P-s and T-s diagram. Catalogue data for R-134A compressor with a displacement of 75 L/s show the capacity to be 8 tons when the suction conditions are 0.1 MPa and -20°C and condensing temperature is 50°C. The refrigerant leaves the condenser as saturated liquid. Calculate the actual volumetric efficiency and the brake work of the compressor if the compressor efficiency is 70%