A PCB is cooled by a 40mmL x 40mmW x 20mmL aluminum block heatsink. If the top and bottom surface of the aluminum heatsink run 45degC and 85degC respectively, what is the heat rate through the aluminum block?
Q: A nuclear power plant is rated at 500 MW (it provides this amount of useful power). During…
A:
Q: A cyclic heat engine operates between a source temperature of 1073K and a sink temperature of 503K…
A: Data given- T1 = 1073 K T2 = 503 K Wnet = 1 kW
Q: Question 6: Find the required length of a 5 cm-diameter tube to heat water from an inlet temperature…
A: Given data: Diameter of the pipe, d=5 cm=0.05 m Let 'L' be the length of the pipe. Inlet temperature…
Q: Vhat is the basic premise the Heat Pump echnology relies on?
A: The solution for the same is attached below:
Q: The food storage room requires a cooling system with a capacity of 15 tons of refrigeration that…
A:
Q: Attemperator increases the higher heat absorption at high loads to ensure that the desired steam…
A: The given statement is true.
Q: The food storage room requires a cooling system with a capacity of 15 tons of refrigeration that…
A:
Q: A counter-flow bank of boiler tubes has a total area of 900 sq ft and its overall efficiency of heat…
A:
Q: An ideal heat pump is used to maintain the inside temperature of a house at Tin = 21 °C when the…
A: Given: Q=650(Tin-Tout)Tin=21°C=294 KTout=8°CP=1400 W
Q: An ice plant produces 20 tons of ice per day at -15oC from water at 25 oC. If miscellaneous losses…
A: The amount of heat required to convert water at 250C to ice at -150C is to be calculated in tons of…
Q: A counterflow bank of boiler tubes has a total area of 900 ft^2 and its overall efficiency of heat…
A: Given data A=900 ft2U=13 Btu/hr-ft-°Fθm=1380 °F
Q: Q) The condenser of a steam power plant contains N = 1000 brass tubes (K= 110 W/m.K), each of inner…
A:
Q: 3.
A:
Q: A surface steam condenser is to be designed for a 100 MW industrial power plant located at Taymsa…
A:
Q: A high-pressure (HP) boiler and a low-pressure (LP) boiler will be added to the steam-generating…
A: Given High pressure boiler Low pressure boiler Low pressure boiler temperature is less than high…
Q: Describe the mechanism of heat loss in the following scenarios. a. A jacketed tank containing tomato…
A: There are three mechanism through which the heat transfer from one body to the other body takes…
Q: The air has a dry ball temperature of 40 ° C and a wet bulb temperature of 26 ° C is initially…
A: Given: state 1: DBT 40 deg C, WBT 26 deg C heated to state 2: DBT 90 deg C The adiabatic process…
Q: A fuel oil of 21 deg API (density = 934 kg/m³) is to be heated in a heater and has the following…
A:
Q: of Stanton numb- dtl númber (Pr) is Re) /Pr, b) St = Re ow heat exchange
A: introduction: here we solve only first three question:
Q: Q14) Derive an expression for the overall heat transfer coefficient (U) for a hollow cylinder…
A:
Q: A heat exchanger has a hot gas temperature of 300 degrees Celsius and surface conductance on hot…
A:
Q: Attemperator increases the higher heat absorption at high loads to ensure that the desired steam…
A: The given statement is true.
Q: The condenser of a room air conditioner is designed to reject heat at a rate of 15,000 kJ/h from…
A: Consider the diagram shown below for the heat exchanger, Given data:
Q: The large insulated flash chamber of a vacuum refrigeration plant is kept at low temperature by a…
A: To find: The quantity in cubic meter per minute of chilled water system can provide. Given: The…
Q: Design a hydrocooling unit that can cool fruits and vegetables from 30°C to 5°C at a rate of 20,000…
A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…
Q: The diameter and the length of the furnace are 1.0 meters. Its lateral surface (surface 3 lack and…
A: View factor for parallel disk: Fij=12[S-S2-4rjri212]S=1+1+Rj2Ri2Rj=rjL , Ri=riLR2=r2L ,…
Q: /AJ/ Prove for the condenser: Cpw (Tw2-Tw1) when the temperature of cooling water outlet and inlet…
A: s1 →Saturated steam, Ts1=Tsats2 →Subcooled liquid, Ts2=Tw2w1 →Saturated liquid, Tw1=Tsatw2…
Q: Design a hydrocooling unit that can cool fruits and vegetables from 30 to 5°C at a rate of 20,000…
A: Given data, The water velocity through the channel is – Now,
Q: An air cooled condenser is to reject 75 kW of heat from a condensing refrigerant to air The…
A:
Q: What is the use of "Feed Water Loop" in Thermal Design? Explain briefly.
A: Introduction: Feed water loop consists of feed water heater which is used to pre heat the water…
Q: An air conditioning system is to be designed for industrial process for hot and wet summer…
A:
Q: he food storage room requires a cooling system with a capacity of 10 tons of refrigeration that…
A:
Q: determine the overall heat transfer coefficient of a condenser formed of copper pipe when the…
A: Given Data The heat transfer coefficient is: hi=2000 W/m2·°C The refrerant side heat transfer…
Q: food storage room requires a cooling system with a capacity of 15 tons of refrigeration that…
A:
Q: A 34'11 MWth plant operates at a thermal efficiency of 34%. The waste heat is dumped across a…
A: Given: η=34% Pc = 0.717 psia Wout = 34.11 MW m˙=4.81*108 lbm/hrTc1=60 Fn = 62832pitch = 1.5do=1…
Q: the convective heat transfer coefficient
A: Given: A small metal bead, has radius, r=0.5 mm Initially temperature at, T=1000 CWhen placed at…
Q: The food storage room requires a cooling system with a capacity of 10 tons of refrigeration that…
A:
Q: a tray of liquid water is placed in a freezer where it cools from 20 deg C to "-5" deg C. what is…
A:
Q: It has been found that condensation forms on the outside of the refrigerator when the temperature on…
A: .
Q: A refrigerant 22 condenser has four water passes and a total of 60 copper tubes that are 14 mm ID…
A:
Q: Problem 5 Space, at sea level, is to be maintained at 75°f db and -50%. 100% fresh air at 110°F db…
A: Solution D
Q: A vacuum refrigeration system consists of a large insulated flash chamber kept at low pressure by…
A:
Q: A 3411 MWth plant operates at a thermal efficiency of 34%. The waste heat is dumped across a…
A: Given Data Work output of plant is : Wout=34.11 MW Thermal efficiency is : ηth=34 %=0.34 Condenser…
Q: It has been suggested that a heat engine could be developedthat made use of the temperature…
A: Part A) Find the efficiency of the engine by using the below expression.
Q: A refrigeration system is being designed to maintain a small frozen storage room at -5°C. The…
A: Given dataTemperature of Refrigerated space = -5°C = 268 KCooling rate = 50 kWOutdoor Temperature =…
Q: High-pressure steam condenses at 400 K on the outer surface of a thin-walled tube of 50 mm diameter.…
A:
Q: The food storage room requires a cooling system with a capacity of 10 tons of refrigeration that…
A:
Q: A radiator heat exchanger is to be designed for the following specifications. Hot gas at 1145°C,…
A: In general, there are three modes by which heat gets transferred from one place to another. The…
Q: The food storage room requires a cooling system with a capacity of 15 tons of refrigeration that…
A:
A PCB is cooled by a 40mmL x 40mmW x 20mmL aluminum block heatsink. If the top and bottom surface of the aluminum heatsink run 45degC and 85degC respectively, what is the heat rate through the aluminum block?
Step by step
Solved in 2 steps
- Refrigerationa.) Explain why you can’t cool down your kitchen by leaving your refrigerator or freezer door open with your refrigerator plugged in for an extended period of time.b.) The condenser of a home refrigerator is commonly underneath the appliance, thus the condensing refrigerant exchanges heat with household air, which averages 70oF. It is proposed toreconfigure a refrigerator so that the condenser is in the garage, where the average yearly temperature is about 50oF. Assume a freezer temperature of 0oF, a minimum temperature difference of 10K for heat transfer, and an actual coefficient of performance of 60% that of a Carnot cycle. Calculate the Coefficient of Performance for both configurations and discuss the pros and cons of this proposal.c.) Which is the most effective way to increase the coefficient of performance of a Carnot refrigerator: to increase TC with TH held constant or to decrease TH with TC held constant? Justify mathematically. For a real refrigerator, do…Discuss the concept of real-time thermal monityoring system.Design thickness of the wall to maintain steady heat flux ??
- In a cyclic comprising of air compressor and expansion, workdone by a prism during the compression stroke is 9.2KJ and the heat rejected to the surrounding is 50KJ. During the expansion stroke workdone by air on the prism is 8.4KJ. a) Determine the quality of heat transferred to or from the system. Tullow oil has discovered a large volume of crude deposit at Cape-3-Point along the western coast of Ghana after years of intensive exploration. In the Company’s bid to start exploration, Green Ghana an environmental protection NGO took Tullow to court to prevent the Company from embarking on the said project citing numerous environmental concerns. b) As an energy and sustainability expert, what do you think are the side effects of the project and their remedies? A cooling water pump is operating at a speed of 1800rpm. Its flow rate is 1800L/minutes at a head of 14.4m and the power of the pump is 45kw. c) Determine the power required if the pump speed is increased…What is the use of "Feed Water Loop" in Thermal Design? Explain briefly.The condenser of a room air conditioner is designedto reject heat at a rate of 15,000 kJ/h from refrigerant-134aas the refrigerant is condensed at a temperature of 408C. Air(cp 5 1005 J/kg?K) flows across the finned condenser coils,entering at 258C and leaving at 358C. If the overall heat transfer coefficient based on the refrigerant side is 150 W/m2?K,determine the heat transfer area on the refrigerant side.
- A fuel oil of 20 deg API (density = 934 kg/m3) is to be heated in a heater and has the following properties: Quantity of oil to be heated 3000L/hr Temp. of oil entering tubes 21C Temp. of oil leaving tubes 95C Heating fluid, steam enters at 105C and leaves as condensate at 85C. Assume specific heat of oil to be 2.093 kJ/kg-K. Take the over-all coefficient of heat transfer is as 140 W/m2-C. What is the rate of heat transfer to the oil? Group of answer choices 120.5 kW 150.2 kW 152.0 kW 125.0 kWa.) The expansion ratio during the isobaric heat addition process in an Ericsson Cycle is 3.5. Determine the Thermal Efficiency in (%) b.) The pressure ratio during the constant volume heat addition of a Stirling Cycle is 4. What is the thermal efficiency in (%)? PLS ANSWER IT CORRECTLYAn air conditioning unit works by taking heat out of a room. As the refrigerant gas expands in the cooling coils, it absorbs heat from the circulating air in the room. This heat is then released as the refrigerant is compressed by the part of the unit that is directed out of the room. The unit serves like a heat pump for the room. Since a refrigerator works in a similar manner, can it also be used to maintain a cool temperature inside a room? Justify your answer.
- The air has a dry ball temperature of 40 ° C and a wet bulb temperature of 26 ° C is initially heated in a heater so that the dry ball temperature increases to 90 ° C. Then the air is passed through the pile of corn kernels to dry. The air that comes out of the corn kernels is at a dry bulb temperature of 60 ° C. Then this air is passed to the dehumidifier to reduce the RH to 10%. Draw the course of this process of changing the air on a psychrometric diagram. The airflow rate through the corn kernels and dehumidifier was 6.0 m / s and the pile cross-sectional diameter was 0.5 m ? a. Determine the amount of water lost from the corn kernels heap (in grams of water / second) = (grams of water / second). b. Determine the amount of water lost from the air when passing through the dehumidifier (in grams of water / second) = (grams of water / second)A counterflow bank of boiler tubes has a total area of 900 ft^2 and its overall efficiency of heat transfer is 13 Btu/hr-ft-°F. Calculate the heat transferred if the log mean temperature difference is 1380°F.8.3 A four-effect evaporator is being considered for concentratinga fruit juice that has no appreciable boiling-point elevation.Steam is available at 143.27 kPa, and the boiling point ofthe product in the fourth effect is 45°C. The overall heat-transfer coeffi cients are 3000 W/(m 2 °C) in the fi rst effect,2500W/(m2 °C) in the second effect, 2100W/(m2°C) in thethird effect, and 1800W/(m2°C) in the fourth effect. Calculatethe boiling-point temperatures of the product in the fi rst,second, and third effects. Assume the heating areas in all theeffects are equal to 50m2 each. The mass fl ow rate of steam tothe fi rst effect is 2400kg/h, the feed rate to the fi rst effect of 5%total solids fl uid is 15,000kg/h, the concentrated product fromthe fi rst effect leaves at 6.25% total solids, and the concentrationof product leaving the second effect is 8.82% total solids. Make it in the form of a spreadsheet for solving the example problem no. 8.2 and 8.3