Refrigerant vapor rejects 70 kW of heat as it passes through an air-cooled condenser. The condenser has an air-side area of 210 m2 and based on this area, has an overall heat transfer coefficient of 0.037 kW/m2∙°C. Cooling air flows at a rate of 7.59 kg/s. If condensation of the refrigerant occurs at 55°C, what is the inlet temperature (in °C) of the air? Take the specific heat of air to be 1.02 kJ/kg∙°C. Round your answer to 2 decimal places.

Answered: Image /qna-images/answer/07383439-8e99-4b93-8d89-fe830aff952a.jpg

Answered: Refrigerant vapor rejects 70 kW of heat…

Refrigerant vapor rejects 70 kW of heat as it passes through an air-cooled condenser. The condenser has an air-side area of 210 m2 and based on this area,

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter44: Geothermal Heat Pumps

Section: Chapter Questions

Problem 1RQ: Geothermal heat pumps, or water-source heat pumps, are classified as either _____loop or _____loop...

See similar textbooks

Related questions

Q: PROBLEM 2 A household refrigerator has a coefficient of performance of 3 and requires a net power…

Q: A refrigerator used to cool a computer requires 1.2 kW of electrical power and has a COP of 1.8.…

A: Electrical power input = Power required to run compressor = Work input = 1.2 kW COP of the…

Q: Define the Performance of Refrigerators, Air Conditioners, and Heat Pumps

A: Usually, the performance of a heat engine is measured by the thermal efficiency i.e. the ratio of…

Q: Q 1- A Carnot refrigerator operates in a room in which the temperature is 22°C and consumes 2 kW of…

Q: Steam generators are a type of heat exchanges that are used in power plants to generate steam at…

Q: Choose your answer from the options listed inside the parenthesis: A reversible heat engine produces…

Q: A refrigerating machine is driven by a motor of output power 2.25 kW and 2.5 tons of ice at -7°C…

A: Specific heat is defined as heat added or rejected from a body by virtue of temperature difference…

Q: You work as a maintenance engineer at Al-Hussein Thermal Power Station that produces electricity. It…

A: Given data: Capacity of thermal power station: W˙=260 MW, which consists of 2 units each generating:…

Q: The evaporator of a refrigeration cycle is basically a heat exchanger in which a refrigerant is…

A: Write the formula for the mass flow rate of refrigerant. Here, is the mass flow rate of…

Q: The roofs of many homes in the United States are covered with photovoltaic (PV) solar cells that…

Q: After a lengthy period of driving, you can feel how warm the engine is by placing your palm on the…

A: After a long heavy driving engine get heated and the temperature increases the highest .This occure…

Q: A freezer has a coefficient of performance of 2.40. Thefreezer is to convert 1.80 kg of water at…

A: Given Data: The mass of water is m = 1.8 kg. The initial temperature of the water is Ti=25° C The…

Q: air-conditioning system is used to maintain a house at 75°F when the temperature outside is 95°F.…

Q: 2)A)What is convection in Heat Transfer ? B)Does the convection affect the lifetime of the turbine?…

A: 2(A) Convection is a heat transfer phenomenon in that bulk movement of molecules within fluids. The…

Q: A 72 MW thermal power plant, which receives heat from a thermal source at 420℃, leaves 30 MW of heat…

Q: How to solve theoretical efficiency of the cooling tower regarding air and water entering the…

Q: 2- The following data relate to a two-pass surface condenser: Steam condensed = 1540 kg/hr…

A: Given that, Mass flow rate of steam condensed, m˙=1540 kg/hr,Inlet temperature of cooling water,…

Q: Steam generators are a type of heat exchanges that are used in power plants to generate steam at…

A: Given data Water enters at 30°C Diameter of tube = 60 mmVolume flow rate = 12 L/s = 12 x 10-3…

Q: The thermal efficiency of a refrigerator is determined by the coefficient of performance COP, which…

Q: A power utility company desires to use the hot groundwater from a hot spring to power a heat engine.…

Q: on water-cooled air-conditioning system with a condensing temperature of 45°C and evaporating…

A: we require the enthalpy at the entrance of the compressor

Q: - Air entering an adiabatic gas turbine with a mass flow of 24 kg/s, leaves the turbine with a…

A: Given that, Mass flow rate of air, m˙=24 kg/sec,Specific volume of air after exit from turbine,…

Q: A condenser of a refrigeration system rejects heat at a rate of 120 kW, while is compressor consumes…

Q: In heat exchangers, where fluid velocity affects the heat transfer rate, fluid flow is usually…

A: Heat exchanger is device where heat is transfer from hot fluid stream to cold fluid stream.

Q: Assuming an average 35% efficiency for power plants and a heating value of approximately 7.5 MJ/kg,…

A: Write the given data with suitable variables: η=35%H=7.5 MJ/kg

Q: An air-cooled condenser has an h value of 30 W/m2-K based on the air-side area. The air-side heat…

Q: Your colleague from a non-thermodynamics background, has asked you to explain to him/her how the…

A: Refrigerators and heat pumps are called as the reversed heat engine. They absorb heat from a…

Q: 1. A geothermal heat pump with a COP of 1.3 provides 48000 BTU/hr of heat to a building. Assuming an…

A: (a) electric power supplied =48000 BTU/hr = 14.064 KW electrical energy supplied to the building…

Q: Define the increase in the energy of a potato in an oven is equal to the amount of heat transferred…

A: Given Data: The heat transferred to the potato is Qin = 5 kJ. The change in the internal energy of…

Q: Steam enters a turbine with a pressure of 700 psia, h = 1403 Btu/lbm, u=1272 Btu/lbm, and flow of 14…

A: Given data: The pressure at the entry is P1=700 psia. The enthalpy at the entry is h1=1403 Btulbm…

Q: A refrigeration cycle driven by an electric motor must maintain a computer laboratory at 180C when…

A: A refrigeration cycle is a thermodynamic cycle in which is used to remove the heat from the required…

Q: 23.) A Carnot engine produces 61,768 hp of power while operating between temperature limits of…

A: find the efficiency of carnot engine.

Q: A steam boiler has the following data: - Steam output: 8000 lb/hr - Steam pressure: 135 psia - %…

A: Note: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts…

Q: A claim states that a heat pump has been invented that requires work to be done on the system of…

A: It is impossible device , because net work done is greater than heat supplied.

Q: A solid cylindrical bar conducts heat at a rate of 25 W from a hot to a cold reservoir under steady…

Q: Determine the net power required to operate the heat pump, in kW. whose coefficient of performance…

A: GivenCOP=2.5Qout=20kw

Q: Thermo review I cannot solve the last part of this question- thank you! A heat engine with a…

A: Given temperature limits are,

Q: A heat engine is supplied heat at the rate of 1700 kJ/min and gives an output of 9 kW. Determine the…

A: Given Data⇒ Heat suppliedQs=1700KJminOutputW=9 KW Problem statement⇒ Problem says Determine the…

Q: A room measures 4mx7mx5m and the air in it has to be always kept 20 C0 lower than that of the…

Q: Describe the heat and work are energy transfer mechanisms between a system and its surroundings, and…

A: Heat and work are boundary phenomenon When we add heat system to the surrounding it taken as +ve…

Q: Steam enters a turbine with a pressure = 4,786 kPa and h 3,204.99 kJ/kg, with a flow of 7.383 kg/s.…

A: Solution is attached below

Q: An air conditioner has refrigerant enthalpy in the input of evaporator coils at 258 kJ/kg,…

A: Given: inlet refrigerant enthalpy→hiR=258 KJ/Kg outlet refrigerant enthalpy →heR=2500 KJ/Kg Volume…

Concept explainers

Hydronics

Question

Refrigerant vapor rejects 70 kW of heat as it passes through an air-cooled condenser. The condenser has an air-side area of 210 m² and based on this area, has an overall heat transfer coefficient of 0.037 kW/m²∙°C. Cooling air flows at a rate of 7.59 kg/s. If condensation of the refrigerant occurs at 55°C, what is the inlet temperature (in °C) of the air? Take the specific heat of air to be 1.02 kJ/kg∙°C.

Round your answer to 2 decimal places.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

Refrigerant vapor rejects 70 kW of heat as it passes through an air-cooled condenser. The condenser has an air-side area of 210 m2 and, based on this area, has an overall heat transfer coefficient of 0.037 kW/m2∙°C. Cooling air flows at a rate of 7.59 kg/s. If condensation of the refrigerant occurs at 55°C, what is the inlet temperature (in °C) of the air? Take the specific heat of air to be 1.02 kJ/kg∙°C. Round your answer to 2 decimal places.
Refrigerant vapor rejects 70 kW of heat as it passes through an air-cooled condenser. The condenser has an air-side area of 210 m2 and, based on this area, has an overall heat transfer coefficient of 0.037 kW/m2∙°C. Cooling air flows at a rate of 7.59 kg/s. If condensation of the refrigerant occurs at 55°C, what is the outlet temperature (in °C) of the air? Take the specific heat of air to be 1.02 kJ/kg∙°C. Round your answer to 2 decimal places.
Refrigerant vapor rejects 70 kW of heat as it passes through an air- cooled condenser. The condenser has an air-side area of 210 m2 and based on this area, has an overall heat transfer coefficient of 0.037 kW/m2.°C. Cooling air flows at a rate of 7.59 kg/s. If condensation of the refrigerant occurs at 55°C, what is the outlet temperature (in °C) of the air? Take the specific heat of air to be 1.02 kJ/kg.°C.
Refrigerant vapor rejects 70 kW of heat as it passes through an air-cooled condenser. The condenser has an air-side area of 210 m? and based on this area, has an overall heat transfer coefficient of 0.037 kW/m2.°C. Cooling air flows at a rate of 7.59 kg/s. If condensation of the refrigerant occurs at 55°C, what is the inlet temperature (in °C) of the air? Take the specific heat of air to be 1.02 kJ/kg.C. Round your answer to 2 decimal places.
Refrigerant vapor rejects 70 kW of heat as it passes through an air-cooled condenser. The condenser has an air-side area of 210 m? and, based on this area, has an overall heat transfer coefficient of 0.037 kW/m2.°C. Cooling air flows at a rate of 7.59 kg/s. If condensation of the refrigerant occurs at 55°C, what is the inlet temperature (in °C) of the air? Take the specific heat of air to be 1.02 kJ/kg.°C. Round your answer to 2 decimal places. Add your answer
Refrigerant vapor rejects 70 kW of heat as it passes through an air-cooled condenser. The condenser has an air-side area of 210 m2 and based on this area, has an overall heat transfer coefficient of 0.037 kW/m?.°C. Cooling air flows at a rate of 7.59 kg/s. If condensation of the refrigerant occurs at 55°C, what is the inlet temperature (in °C) of the air? Take the specific heat of air to be 1.02 kJ/kg.°C. Round your answer to 2 decimal places.
The refrigerating effect of 64 tons of refrigeration is 114 KJ/kg. compute mass flow rate of refrigerant kg/s
A surface condenser receives steam with a dryness fraction of 0.9 from a turbine. The mass flow rate of the steam into the condenser is 5000kg/hr and the condenser pressure is 16.4kPa. Condensate leaves the condenser with a temperature of 41.6°C. Air leaks into the condenser at a rate of 18.91kg/hr. Determine the volume of air removed per hour (m3/hr) accurate to 4 decimal places assuming that a wet pump is used in the condenser. Gas constant for air can be taken as 0.287 kJ/kg.K. HINT: Only numbers in the answer field, no units to be entered Question 1 of 22
QUESTION 10 Consider a water-to-water counter-flow heat ex-changer with these specifications. Hot water enters at 95 °C while cold water enters at 20 °C. The exit temperature of hot water is 15 °C greater than that of cold water, and the mass flow rate of hot water is 50 percent greater than that of cold water. The product of heat transfer surface area and the overall heat transfer coefficient is 1400 W/m².ºC. Taking the specific heat of both cold and hot water to be Cp = 4180 J/kg.ºC, determine i. the outlet temperature of the cold water, ii. the effective-ness of the heat exchanger, iii. the mass flow rate of the cold water, and iv. the heat transfer rate.
0.2 A condenser condenses 2700kg steam per hour while air leaks into It at 2.2kg/hr. The condensate and air suction spout temperatures are 32.9°C. The barometer and vacuum gauge readings are 765mmHg and 690mmHg respectively. The condenser uses 125.55M9 of cooling water per hour to condense steam with a dryness fraction of 0.86 and the air pump has a volumetric efficiency of 82.5%. Take R = 0.287kJ/kgK for air and calculate: %3D 6.2.1 the temperature rise of the cooling water (10.85°C); 6.2.2 the air pump capacity in m2/min (0.78m3³/min).
An air-cooled condenser has an h value of 30 W/m2-K based on the air-side area. The air-side heat transfer area is 190 m2 with air entering at 27°C and leaving at 40°C. If the condensing temperature is constant at 49°C, what is the air mass flow rate in kg/s? Let Cp(air) = 1.006 kJ/kg-K. Draw and label the temperature-flow diagram. Round off your answer to three (3) decimal places.
An oil-fired thermal plant uses 0.002m^3/s of bunker oil whose relative density at 23.9C is 0.905. The specific enthalpy of steam in kJ/kg are as follows: boiler outlet = 3530.9, condenser inlet3 2289.5, pump inlet = 251. 96, boiler inlet = 259.05. The boiler of this plant is 90% effective in transferring the energy chargeable to the water. Using the ASME formula to compute the fuel's higher heating value, compute the possible steam consumption of this power plant in kg/s. a.) 22.1194 b.) 22.1933 c.) 22.2045 d.) 22.1412 Note: Use 4 decimal places in all computation.