Homework Answers
Add Answer to:
D Question 1 1 pts An adiabatic heat exchanger is used to heat cold water at...
A heat exchanger is used to heat cold water at 8C entering at a rate of...
A heat exchanger is used to heat cold water at 8C entering at a rate of 1.2 kg/s by hot air at 90 C entering at rate of 2.5 kg/s. The heat exchanger is not insulated, and is loosing heat at a rate of 28 kJ/s. If the exit temperature of hot air is 20 C, the exit temperature of cold water is
d. Answer is not among the choices 24. *A heat exchanger is used to heat cold...
d. Answer is not among the choices 24. *A heat exchanger is used to heat cold water at 15°C entering at a rate of 2 kg/s by a hot air at 100°C entering at a rate of 3 kg/s. The heat exchanger is losing heat at a heat rate of 40 kJ/s. If the exit temperature of hot air is 20°C, the exit temperature of the cold water is °C. Neglect changes in potential and kinetic energies. 39 49 b....
Determine the effectiveness of the concentric tube heat exchanger. The working fluid through the heat exchanger...
Determine the effectiveness of the concentric tube heat exchanger. The working fluid through the heat exchanger is water and is flowing at 1 m/min for both cold and hot pipes. The hot water temperature at the tube inlet is 90°C and the temperature at the tube outlet is 60°C. The cold water temperature at the tube inlet is 50°C and the temperature at the tube outlet is 80°C. Assume the density and the specific heat of water are 988.1 kg/m3...
Hot water flows thorough a parallel flow heat exchanger at a rate of 10 kg/min and...
Hot water flows thorough a parallel flow heat exchanger at a rate of 10 kg/min and is cooled by a cold water stream of flow rate 25 kg/min. The inlet temperatures of hot and cold water streams are 70 oC and 25 oC, respectively. The outlet temperature of the hot water is expected to be 50 oC. The individual convective heat transfer coefficient on both sides of the heat transfer area is 600 W/m2 .K. Take the specific heat for...
4. A Cross-Flow Air-to-Water Heat Exchanger with an effectiveness of 0.58 is used to heat water, ...
4. A Cross-Flow Air-to-Water Heat Exchanger with an effectiveness of 0.58 is used to heat water, entering at 20°C at a rate of 4 kg/s, using hot air, entering at 127oC at a rate of 10 kg/s. The Overall Heat Transfer Coefficient for the Heat exchanger is 275 W/m'K. Assuming both fluids are unmixed, determine; (i) The Heat Capacity rates for both the air and the water (ii) The heat transfer surface area. ii) The exit temperature of the water...
An adiabatic heat exchanger is one for which no heat is exchanged with the surroundings. All...
An adiabatic heat exchanger is one for which no heat is exchanged with the surroundings. All of the heat lost by the hot stream is transferred to the cold stream in this adiabatic process. In a proposed process, propane gas enters a continuous adiabatic heat exchanger at 45 °C and 265 kPa and exits at 255 °C. Superheated steam at 300 °C and 7.0 bar enters the exchanger flowing countercurrently to the propane and exits as a saturated liquid at...
Thermodynamics A heat exchanger is to heat water (cp = 4.18 kJ/kg.C) from 25 C to...
Thermodynamics A heat exchanger is to heat water (cp = 4.18 kJ/kg.C) from 25 C to 60 C at a rate of 0.2 kg/s. The heating is to be accomplished by geothermal water (cp = 4.31 kJ/kg.C) available at 140 C at a mass flow rate of 0.3 kg/s. The inner tube is thin walled and has a diameter of 0.8 cm. Determine the rate of heat transfer in the heat exchanger and the exit temperature of geothermal water.
1) 2.5 m/s of air at 150°C is used to heat 0.35 kg/s of 20°C water....
1) 2.5 m/s of air at 150°C is used to heat 0.35 kg/s of 20°C water. The heat exchanger is a finned-tube cross flow heat exchanger with both sides unmixed. The overall heat transfer coefficient associated with the hot side is 120 W/(m2 °C). The hot-side area is 20 m². Assume a constant specific heat for air and water of Gezic = 1.005 kJ/(kg °C), Senator = 4.2 kJ/(kg °C). The pressure of the hot air is P = 1.0...
A heat exchanger is being investigated as a waste heat recovery device. A heat exchanger is commo...
A heat exchanger is being investigated as a waste heat recovery device. A heat exchanger is common device for using a hot fluid to heat a cold fluid without the fluids mixing. The cold fluid stream of liquid A enters at 294.2 K and leaves the device at a temperature of 330.91 K. Liquid A flows at a rate of 0.006 Kg/s and has a specific heat of 4180 J/(Kg K) and a specific volume of 0.00102 m3/Kg. Liquid B...
1) 2.5 m3/s of air at 150°C is used to heat 0.342 kg/s of 20°C water....
1) 2.5 m3/s of air at 150°C is used to heat 0.342 kg/s of 20°C water. The heat exchanger is a finned-tube cross flow heat exchanger with both sides unmixed. The overall heat transfer coefficient associated with the hot side is 120 W/(m2°C). The hot-side area is 20 m2. Assume a constant specific heat for air and water of Crezia = 1.005 kJ/(kgº), Crewater = 4.2 kJ/(kg °C). The pressure of the hot air is P = 1.0 atm. The...
d. Answer is not among the choices 24. *A heat exchanger is used to heat cold water at 15°C entering at a rate of 2 kg/s by a hot air at 100°C entering at a rate of 3 kg/s. The heat exchanger is losing heat at a heat rate of 40 kJ/s. If the exit temperature of hot air is 20°C, the exit temperature of the cold water is °C. Neglect changes in potential and kinetic energies. 39 49 b....
Determine the effectiveness of the concentric tube heat exchanger. The working fluid through the heat exchanger is water and is flowing at 1 m/min for both cold and hot pipes. The hot water temperature at the tube inlet is 90°C and the temperature at the tube outlet is 60°C. The cold water temperature at the tube inlet is 50°C and the temperature at the tube outlet is 80°C. Assume the density and the specific heat of water are 988.1 kg/m3...
4. A Cross-Flow Air-to-Water Heat Exchanger with an effectiveness of 0.58 is used to heat water, entering at 20°C at a rate of 4 kg/s, using hot air, entering at 127oC at a rate of 10 kg/s. The Overall Heat Transfer Coefficient for the Heat exchanger is 275 W/m'K. Assuming both fluids are unmixed, determine; (i) The Heat Capacity rates for both the air and the water (ii) The heat transfer surface area. ii) The exit temperature of the water...
1) 2.5 m/s of air at 150°C is used to heat 0.35 kg/s of 20°C water. The heat exchanger is a finned-tube cross flow heat exchanger with both sides unmixed. The overall heat transfer coefficient associated with the hot side is 120 W/(m2 °C). The hot-side area is 20 m². Assume a constant specific heat for air and water of Gezic = 1.005 kJ/(kg °C), Senator = 4.2 kJ/(kg °C). The pressure of the hot air is P = 1.0...
1) 2.5 m3/s of air at 150°C is used to heat 0.342 kg/s of 20°C water. The heat exchanger is a finned-tube cross flow heat exchanger with both sides unmixed. The overall heat transfer coefficient associated with the hot side is 120 W/(m2°C). The hot-side area is 20 m2. Assume a constant specific heat for air and water of Crezia = 1.005 kJ/(kgº), Crewater = 4.2 kJ/(kg °C). The pressure of the hot air is P = 1.0 atm. The...
Most questions answered within 3 hours.
-
Given that z is a standard normal random variable, compute the
following probabilities (to 4 decimals)....
asked 1 minute ago -
You begin preparation of the calibration curve to measure
absorbance vs concentration of FeSCN2+. To do...
asked 18 minutes ago -
When you speak after breathing helium, in which the speed of
sound is much greater than...
asked 11 minutes ago -
3. Stock Valuation: You are the CEO of Under Armour, Inc. and
are thinking about how...
asked 15 minutes ago -
Choose a brand. Critique the brand in terms of its brand
positioning, brand identity and brand...
asked 18 minutes ago -
A vertical curve has grades G1 = 2.8% (downgrade) and
G2 = 2.2 (upgrade) Assume design...
asked 18 minutes ago -
(a) Derive planar density expressions for BCC
(110) plane in terms of the atomic radius R....
asked 13 minutes ago -
I have this problem now and I am not sure what we are exactly
supposed to...
asked 19 minutes ago -
Use the following set of observed frequencies to test the
independence of the two variables. Variable...
asked 43 minutes ago -
Two kg of ice at -15 °C are placed in a 2 kg bath of water...
asked 42 minutes ago -
Describe the following with suitable
examples.
1- Security Policy Heterogeneity
2-Security Model Heterogeneity
3-Security Mechanism Heterogeneity...
asked 43 minutes ago -
Please Identify the Term "Determinism" in Psychology
asked 42 minutes ago