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3/ A LiBr-H2O absorption cooling system contains of one solution heat exchanger, generator, condense an evaporator,...
QV An absorption system use LiBr-H2O solution. The system consists of two he exchangers (refrigerant heat exchanger...
QV An absorption system use LiBr-H2O solution. The system consists of two he exchangers (refrigerant heat exchanger and solution heat exchanger). All temperatures are shown in figure 2 below. The cooling capacity at the evaporator is 100 Tons. Calculate the rate of heat transfer at the generator, the temperatures at point 4 & 9 and the overall COP. 5 cond, 40°C- Gen. 100 c 43 C Ref.Heat Solution Heat Exchanger E.v Abs. 30 C Pump.
QV An absorption system use...
The temperature of the condenser in the absorption system shown in Figure 1 drops down to...
The temperature of the condenser in the absorption system shown
in Figure 1 drops down to 34°C. Determine the concentration and
enthalpy of the solution at point 4 and comment on the results
obtained. Assume that all other temperatures are unchanged. (6
marks)
(5) Water vapor Dots Qe a Condenser Generator 95 °C 40 °C To L Heat exchanger t o Water vapor LiBr solution water vapor Absorber 30 °C Evaporator 10°C m = 0.65 kg/s Figure 1. A single-stage...
A concentric tube heat exchanger for cooling lubricating oil consists of a thin-walled inner tube of...
A concentric tube heat exchanger for cooling lubricating oil
consists of a thin-walled inner tube of 25 mm diameter carrying
water and an outer tube of 45 mm diameter carrying the oil. The
exchanger operates in countercurrent flow with an overall heat
transfer coefficient of 55 W/m2 K and the tabulated average
properties given below. Mass flow rates of oil and water are both
0.1 kg/s, oil enters the exchanger at 100°C, and water enters the
exchanger at 30°C. (a)...
The heat-pump system shown is designed to provide water-heating and space-cooling. The system includes a heat...
The heat-pump system shown is designed to provide water-heating and space-cooling. The system includes a heat exchanger to subcool the R134a refrigerant at the outlet of the water heater while heating the refrigerant at the outlet of the evaporator. Given the following data, determine the enthalpy at each station, 1 through 6, using the R134a property tables (click here). Type your answers hy through h6 in the space provided below, and show all your work on your paper. · At...
determine 1) sub cooling achieved in the heat exchanger, 2) refrigerant flow rate, 3) cop of the plant ii) A refrigeration unit with 100-ton capacity operates in a vapour compression O refrigerati...
determine 1) sub cooling achieved in the heat
exchanger, 2) refrigerant flow rate, 3) cop of the plant
ii) A refrigeration unit with 100-ton capacity operates in a vapour compression O refrigeration cycle between the temperature limits of 308 and 263 K. It uses R-12 G as a refrigerantC A heat exchanger is inducted in the circuit in between the condenser and the expander, The refrigerant vapour leaving the evaporator is superheated in the heat exchanger in the countercurrent flow...
Problem 1. (30 points) A double-pipe heat exchanger is used to condense steam at 7370 N/m2....
Problem 1. (30 points) A double-pipe heat exchanger is used to condense steam at 7370 N/m2. Water at an average bulk temperature of 10°C flows at 2.50 m/s through the inner pipe. which is made of copper and has a 2.54-cm ID and a 3.05-cm OD. Steam at its saturation temperature flows in the annulus formed between the outer surface of the inner pipe and an outer pipe of 5.08-cm-ID. The average heat transfer coefficient of the condensing steam is...
now pleassse QUESTI 20 points Save An The heat-pump system shown is designed to provide water...
now pleassse
QUESTI 20 points Save An The heat-pump system shown is designed to provide water heating and space-cooling. The system includes a heat exchanger to subcool the R134a refrigerant at the outlet of the water heater while heating the refrigerant at the outlet of the evaporator. Given the following data, determine the enthalpy at each station, 1 through 6, using the R134a property tables (click here). Type your answers hy through h6 in the space provided below, and show...
PLEASE ANSWER QUICKLY!! I WILL THUMBS UP! Thank you so much in advance!! The heat-pump system...
PLEASE ANSWER QUICKLY!! I WILL THUMBS UP! Thank you so much in
advance!!
The heat-pump system shown is designed to provide water-heating and space-cooling. The system includes a heat exchanger to subcool the R134a refrigerant at the outlet of the water heater while heating the refrigerant at the outlet of the evaporator. Given the following data, determine the enthalpy at each station, 1 through 6, using the R134a property tables (click here). Type your answers hy through h6 in the...
The figure below shows a condenser/cooling tower pipe system needed to remove heat from a water...
The figure below shows a condenser/cooling tower pipe system needed to remove heat from a water cooled refrigeration condenser and reject the heat to the atmosphere. The amount of heat to be rejected to the atmosphere is 480,000 Btu/hr. The water enters the condenser at 85"F, and the temperature rise of the water through the condenser is 10°F. The total length of the piping in the system is 60 ft. Fittings are as shown. Assume bends to be as shown...
Required information A shell-and-tube heat exchanger is used for cooling 47 kg/s of a process stream...
Required information A shell-and-tube heat exchanger is used for cooling 47 kg/s of a process stream flowing through the tubes from 160°C to 136°C. This heat exchanger has a total of 100 identical tubes. each with an inside diameter of 2.5 cm and negligible wall thickness. The average properties of the process stream are: p = 950 kg/m”, k = 0.50 W/mK, Cp=3.5 kJ/kg.K, and -20 mPas The coolant stream is water (cp=4.18 kJ/kg K) at a flow rate of...
QV An absorption system use LiBr-H2O solution. The system consists of two he exchangers (refrigerant heat exchanger and solution heat exchanger). All temperatures are shown in figure 2 below. The cooling capacity at the evaporator is 100 Tons. Calculate the rate of heat transfer at the generator, the temperatures at point 4 & 9 and the overall COP. 5 cond, 40°C- Gen. 100 c 43 C Ref.Heat Solution Heat Exchanger E.v Abs. 30 C Pump.
QV An absorption system use...
The temperature of the condenser in the absorption system shown
in Figure 1 drops down to 34°C. Determine the concentration and
enthalpy of the solution at point 4 and comment on the results
obtained. Assume that all other temperatures are unchanged. (6
marks)
(5) Water vapor Dots Qe a Condenser Generator 95 °C 40 °C To L Heat exchanger t o Water vapor LiBr solution water vapor Absorber 30 °C Evaporator 10°C m = 0.65 kg/s Figure 1. A single-stage...
A concentric tube heat exchanger for cooling lubricating oil
consists of a thin-walled inner tube of 25 mm diameter carrying
water and an outer tube of 45 mm diameter carrying the oil. The
exchanger operates in countercurrent flow with an overall heat
transfer coefficient of 55 W/m2 K and the tabulated average
properties given below. Mass flow rates of oil and water are both
0.1 kg/s, oil enters the exchanger at 100°C, and water enters the
exchanger at 30°C. (a)...
The heat-pump system shown is designed to provide water-heating and space-cooling. The system includes a heat exchanger to subcool the R134a refrigerant at the outlet of the water heater while heating the refrigerant at the outlet of the evaporator. Given the following data, determine the enthalpy at each station, 1 through 6, using the R134a property tables (click here). Type your answers hy through h6 in the space provided below, and show all your work on your paper. · At...
determine 1) sub cooling achieved in the heat
exchanger, 2) refrigerant flow rate, 3) cop of the plant
ii) A refrigeration unit with 100-ton capacity operates in a vapour compression O refrigeration cycle between the temperature limits of 308 and 263 K. It uses R-12 G as a refrigerantC A heat exchanger is inducted in the circuit in between the condenser and the expander, The refrigerant vapour leaving the evaporator is superheated in the heat exchanger in the countercurrent flow...
Problem 1. (30 points) A double-pipe heat exchanger is used to condense steam at 7370 N/m2. Water at an average bulk temperature of 10°C flows at 2.50 m/s through the inner pipe. which is made of copper and has a 2.54-cm ID and a 3.05-cm OD. Steam at its saturation temperature flows in the annulus formed between the outer surface of the inner pipe and an outer pipe of 5.08-cm-ID. The average heat transfer coefficient of the condensing steam is...
now pleassse
QUESTI 20 points Save An The heat-pump system shown is designed to provide water heating and space-cooling. The system includes a heat exchanger to subcool the R134a refrigerant at the outlet of the water heater while heating the refrigerant at the outlet of the evaporator. Given the following data, determine the enthalpy at each station, 1 through 6, using the R134a property tables (click here). Type your answers hy through h6 in the space provided below, and show...
PLEASE ANSWER QUICKLY!! I WILL THUMBS UP! Thank you so much in
advance!!
The heat-pump system shown is designed to provide water-heating and space-cooling. The system includes a heat exchanger to subcool the R134a refrigerant at the outlet of the water heater while heating the refrigerant at the outlet of the evaporator. Given the following data, determine the enthalpy at each station, 1 through 6, using the R134a property tables (click here). Type your answers hy through h6 in the...
The figure below shows a condenser/cooling tower pipe system needed to remove heat from a water cooled refrigeration condenser and reject the heat to the atmosphere. The amount of heat to be rejected to the atmosphere is 480,000 Btu/hr. The water enters the condenser at 85"F, and the temperature rise of the water through the condenser is 10°F. The total length of the piping in the system is 60 ft. Fittings are as shown. Assume bends to be as shown...
Required information A shell-and-tube heat exchanger is used for cooling 47 kg/s of a process stream flowing through the tubes from 160°C to 136°C. This heat exchanger has a total of 100 identical tubes. each with an inside diameter of 2.5 cm and negligible wall thickness. The average properties of the process stream are: p = 950 kg/m”, k = 0.50 W/mK, Cp=3.5 kJ/kg.K, and -20 mPas The coolant stream is water (cp=4.18 kJ/kg K) at a flow rate of...
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