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if sure than solve . I will be rate 2. In a steam jet refrigeration system, the evaporator is maintained at 6°C. The...
EXAMPLE 6 A household refrigeration system works with a vapor compression refrigeration system with two evaporators...
EXAMPLE 6 A household refrigeration system works with a vapor compression refrigeration system with two evaporators using Refrigerant 134a as the working fluid. This arrangement is used to achieve refrigeration at two different temperatures with a single compressor and a single condenser. The low temperature evaporator operates at -18°C with saturated vapor at its exit and has a refrigerating capacity of 10.5 kW (3 tons). The higher- temperature evaporator produces saturated vapor at 3.2 bar at its exit and has...
refrigeration system is required to supply 20 tons of refrigeration at an evaporator Qi: A cascade enerature of -50...
refrigeration system is required to supply 20 tons of refrigeration at an evaporator Qi: A cascade enerature of -50 °C and a condenser temperature of 40 °C. The load at 50 Cbedby unit using as the refrigerant and is rejected to a cascade condenser at -10 C. This cascade condenser is cooled by R-12 as the refrigerant and operating between -25 °C evaporating temperatures and 40 ec unit using The refrigerant leaving the R-12 condenser is sub-cooled by 5 °C...
4. A water chiller provides 100 tons 3.516 kw/ton of refrigeration to cool water to a...
4. A water chiller provides 100 tons 3.516 kw/ton of refrigeration to cool water to a temperature of 12.10 C for an air conditioning system. The heat extracted from the water is to be rejected in a cooling tower at 35.4°C, Assuming that the chiller operates on an ideal vapour refrigeration cycle with the temperature in the evaporator equal to the chilled water temperature and the saturation temperature in the condenser equal to the cooling tower water temperature, determine (a)...
PLEASE ANSWER #6 PLEASE ANSWER #6 Figure 1 presents a seawater cooled steam ejector refrigeration/Heat Pump...
PLEASE ANSWER #6
PLEASE ANSWER #6
Figure 1 presents a seawater cooled steam ejector refrigeration/Heat Pump System for Naval Surface Ship Applications. A Steam Ejector Refrigeration System is thermally driven heating and cooling technology by changing the pressure to control the boiling temperature which will enhance evaporation of fluid to realize cooling purpose. A heat pump system is to utilize the phase change of fluids to realize heating and cooling purpose. Please answer following questions: exhaust gas boiler nozzle section...
1.3 127 5.3 3.(10 pts) A cold storage room (10 m x 10 m x 10 m) is being maintained at 2 °C using a vapor compression refrigeration system that uses R-134a. The evaporator and condenser temperatu...
1.3 127 5.3 3.(10 pts) A cold storage room (10 m x 10 m x 10 m) is being maintained at 2 °C using a vapor compression refrigeration system that uses R-134a. The evaporator and condenser temperatures are -20 and 40°C, respectively. The walls and ceiling of the storage room is constructed of 15 cm thick concrete (thermal conductivity-1.37 WIm K]) and 4.3 cm thick insulation (thermal conductivity-0.04 W/[m K). The outside insulation surface temperature of the walls (or ceiling)...
Prob. # 2] The temperature to be maintained in an office building is 26 C DB heat is 77.6 kW and the latent heat gain is 14.3 kW. Th accomplished by passing it through a spray-type heated to 18 C...
Prob. # 2] The temperature to be maintained in an office building is 26 C DB heat is 77.6 kW and the latent heat gain is 14.3 kW. Th accomplished by passing it through a spray-type heated to 18 C then supplied to the room. Find and 18 C W B. The sensible e cooling and dehumidifying of the air is washer with water chilled by refrigeration. The air is then a. the apparatus dew point temperature of washer, b....
Problem #1 (40 Marks) A refrigeration system is designed to maintain a cool space at -20°C in arn environment of +50°C....
Problem #1 (40 Marks) A refrigeration system is designed to maintain a cool space at -20°C in arn environment of +50°C. The wide temperature range is difficult to achieve with a single refrigerant, because the refrigerant will generally be at excessively high pressures at the top of the temperature range, and sub-atmospheric pressures at the bottom end The problem is solved with a 2-stage cascaded system that uses refrigerant 134a (R134a) and refrigerant 22 (R22) respectively for the high temperature...
Internal Flow Homework 1 Cooling water available at 10°C is used to condense steam at 30°c...
Internal Flow Homework 1 Cooling water available at 10°C is used to condense steam at 30°c in the condenser of a power plant at a rate of 0.60 kg/s by circulating the cooling water through a bank of 5-m-long 1.2-cm-internal-diameter thin copper tubes. Water enters the tubes at a mean velocity of 4 m/s, and leaves at a temperature of 24°C. The tubes are nearly isothermal at 30°C. Determine the average heat transfer coefficient between the water and the tubes,...
(100 points) Figure below shows the schematic diagram of a two-stage cascade refrigeration system (also called...
(100 points) Figure below shows the schematic diagram of a two-stage cascade refrigeration system (also called the Economizer 2-Stage Refrigeration Cycle). Comparing to the cascade two-stage refrigeration system discussed in In-class Activity #10a, in this case, the flash chamber (now called Flash Intercooler) is still used but the mixing chamber is removed. The superheated vapor (2) out of the low-pressure compressor (1) is routed into the flash chamber, and the saturated vapor (3) out of the flash chamber enters directly...
Cooling water available at 10°C is used to condense steam at 30°C in the condenser of...
Cooling water available at 10°C is used to condense steam at 30°C in the condenser of a power plant at a rate of 0.15 kg/s by circulating the cooling water through a bank of 5-m-long 1.2-cm-internal-diameter thin copper tubes. Water enters the tubes at a mean velocity of 4.75 m/s and leaves at a temperature of 24°C. The tubes are nearly isothermal at 30°C. The properties of water at the average temperature of (10+24)/2=17°C are: ρ = 998.7 kg/m3 cp...
EXAMPLE 6 A household refrigeration system works with a vapor compression refrigeration system with two evaporators using Refrigerant 134a as the working fluid. This arrangement is used to achieve refrigeration at two different temperatures with a single compressor and a single condenser. The low temperature evaporator operates at -18°C with saturated vapor at its exit and has a refrigerating capacity of 10.5 kW (3 tons). The higher- temperature evaporator produces saturated vapor at 3.2 bar at its exit and has...
refrigeration system is required to supply 20 tons of refrigeration at an evaporator Qi: A cascade enerature of -50 °C and a condenser temperature of 40 °C. The load at 50 Cbedby unit using as the refrigerant and is rejected to a cascade condenser at -10 C. This cascade condenser is cooled by R-12 as the refrigerant and operating between -25 °C evaporating temperatures and 40 ec unit using The refrigerant leaving the R-12 condenser is sub-cooled by 5 °C...
4. A water chiller provides 100 tons 3.516 kw/ton of refrigeration to cool water to a temperature of 12.10 C for an air conditioning system. The heat extracted from the water is to be rejected in a cooling tower at 35.4°C, Assuming that the chiller operates on an ideal vapour refrigeration cycle with the temperature in the evaporator equal to the chilled water temperature and the saturation temperature in the condenser equal to the cooling tower water temperature, determine (a)...
PLEASE ANSWER #6
PLEASE ANSWER #6
Figure 1 presents a seawater cooled steam ejector refrigeration/Heat Pump System for Naval Surface Ship Applications. A Steam Ejector Refrigeration System is thermally driven heating and cooling technology by changing the pressure to control the boiling temperature which will enhance evaporation of fluid to realize cooling purpose. A heat pump system is to utilize the phase change of fluids to realize heating and cooling purpose. Please answer following questions: exhaust gas boiler nozzle section...
1.3 127 5.3 3.(10 pts) A cold storage room (10 m x 10 m x 10 m) is being maintained at 2 °C using a vapor compression refrigeration system that uses R-134a. The evaporator and condenser temperatures are -20 and 40°C, respectively. The walls and ceiling of the storage room is constructed of 15 cm thick concrete (thermal conductivity-1.37 WIm K]) and 4.3 cm thick insulation (thermal conductivity-0.04 W/[m K). The outside insulation surface temperature of the walls (or ceiling)...
Prob. # 2] The temperature to be maintained in an office building is 26 C DB heat is 77.6 kW and the latent heat gain is 14.3 kW. Th accomplished by passing it through a spray-type heated to 18 C then supplied to the room. Find and 18 C W B. The sensible e cooling and dehumidifying of the air is washer with water chilled by refrigeration. The air is then a. the apparatus dew point temperature of washer, b....
Problem #1 (40 Marks) A refrigeration system is designed to maintain a cool space at -20°C in arn environment of +50°C. The wide temperature range is difficult to achieve with a single refrigerant, because the refrigerant will generally be at excessively high pressures at the top of the temperature range, and sub-atmospheric pressures at the bottom end The problem is solved with a 2-stage cascaded system that uses refrigerant 134a (R134a) and refrigerant 22 (R22) respectively for the high temperature...
Internal Flow Homework 1 Cooling water available at 10°C is used to condense steam at 30°c in the condenser of a power plant at a rate of 0.60 kg/s by circulating the cooling water through a bank of 5-m-long 1.2-cm-internal-diameter thin copper tubes. Water enters the tubes at a mean velocity of 4 m/s, and leaves at a temperature of 24°C. The tubes are nearly isothermal at 30°C. Determine the average heat transfer coefficient between the water and the tubes,...
(100 points) Figure below shows the schematic diagram of a two-stage cascade refrigeration system (also called the Economizer 2-Stage Refrigeration Cycle). Comparing to the cascade two-stage refrigeration system discussed in In-class Activity #10a, in this case, the flash chamber (now called Flash Intercooler) is still used but the mixing chamber is removed. The superheated vapor (2) out of the low-pressure compressor (1) is routed into the flash chamber, and the saturated vapor (3) out of the flash chamber enters directly...
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