Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN: 9781305578296
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 44, Problem 18RQ
What kind of material is used in the waterless ground loop in a waterless, earth-coupled, closed-loop geothermal heat pump system?
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Task 3
An ideal vapor-compression refrigeration cycle that uses refrigerant-134a as its working fluid
maintains a condenser at 800 kPa and the temperature of the evaporator is -15 C. Given 300 kW of
cooling load, determine the following:
1. Construct didactic sketches, showing the operating principles of a refrigeration system.
2. When you select a refrigerant for a certain application, what qualities would you look for in
the refrigerant?
3. Estimate the reversible COP values, if the low and high medium temperature are as for the
evaporator and condenser.
4. Determine the Refrigeration effect (RE), heat of compression (HOC), and heat of rejection
(HOR) and their corresponding rate/power values in kW.
5. Estimate the COPR using thermodynamic tables
6. Calculate the COPR using the P-h chart and show the refrigeration cycle on the p-h chart.
7. Discuss the difference between your answers in 4 and 5 above and which one do you think
is more accurate.
Task 3
An ideal vapor-compression refrigeration cycle that uses refrigerant-134a as its working fluid
maintains a condenser at 800 kPa and the temperature of the evaporator is -15 C. Given 300 kW of
cooling load, determine the following:
1. Construct didactic sketches, showing the operating principles of a refrigeration system.
2. When you select a refrigerant for a certain application, what qualities would you look for in
the refrigerant?
3. Estimate the reversible COP values, if the low and high medium temperature are as for the
evaporator and condenser.
01. A refrigerant 22 system having a refrigerating capacity of 55 kW
operates with an evaporating temperature of 5°C and rejects heat to water
cooled condenser. The compressor is hermetically sealed. The condenser
has a U value of 450 W/m².K and a heat-transfer area of 18 m? and
receives a flow rate of cooling water of 3.2 kg/s at a temperature of 30°C.
What is the condensing temperature?
Chapter 44 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 44 - Geothermal heat pumps, or water-source heat pumps,...Ch. 44 - An important factor (or factors) involving water...Ch. 44 - Explain the ground loop or water loop of a...Ch. 44 - Explain the refrigerant loop of a closed-loop,...Ch. 44 - The__________loop is used to distribute heated or...Ch. 44 - True or False: Domestic hot water can be heated...Ch. 44 - Prob. 7RQCh. 44 - Antifreeze solutions that can be used in the...Ch. 44 - What is the main difference between a copper and a...Ch. 44 - A(n) ______well draws water from the top of...
Ch. 44 - Which of the following is a process in which a...Ch. 44 - The function of the pressure tank in an open-loop,...Ch. 44 - If 14 gpm of water is flowing through an open-loop...Ch. 44 - Explain the operation/purpose of the buffer tank...Ch. 44 - How will oversizing the buffer tank on a...Ch. 44 - Explain why a waterless, earth-coupled,...Ch. 44 - Explain how refrigerant and oil leakage are found...Ch. 44 - What kind of material is used in the waterless...
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
- What is the purpose of a heat sink?arrow_forwardWhat is a heat pump and explains its purpose?arrow_forward14. A 220-volt electrical heater is used to warm 6Li/hr of water from 25°C to 93°C. Assume heat conversion loss of 23% of the total heat supplied, how much current in amperes must be supplied to this heater. a. 3.0072Amps b. 2.9957Amps c. 2.8012Amps d. 3.2160Ampsarrow_forward
- Draw the schematic and p-h diagram for the problem below: A two-stage cascade refrigeration system uses ammonia as refrigerant. The mass flow rate in the high-pressure loop is 0.10 kg/s. The condenser saturated temperature is 38 degree Celsius and the evaporator temperature is -40 degree Celsius. The cascade condenser is a direct contact type. Determine a.) the refrigerating effect in tons of refrigeration, b.) the power required, and c.) the COP.arrow_forwardWhat are the different Heat pump circuits? Explain any one of them with the help of neat sketcharrow_forwardUSE THE REFRIGERANT TABLE MODULE : THERMODYNAMICS QUESTION 4 Consider a two-stage cascade refrigeration system operating between the pressure limits of 1.6 MPa and 140 kPa with refrigerant-134a as the working fluid. Heat rejection from the lower cycle to the upper cycle takes place in an adiabatic counterflow heat exchanger where the pressure in the upper and lower cycles are 0.4 and 0.6 MPa, respectively. In both cycles, the refrigerant is a saturated liquid at the condenser exit and a saturated vapour at the compressor inlet, If the mass flow rate of the refrigerant through the lower cycle is 0.4 kg/s, determine the COP of this refrigerator. NOTE: Your answer should be in 2 decimal places and do not include SI units in your answer when puting it in the answer boxarrow_forward
- USE THE REFRIGERANT TABLES MODULE : THERMODYNAMICS QUESTION 3 Consider a two-stage cascade refrigeration system operating between the pressure limits of 1.6 MPa and 140 kPa with refrigerant-134a as the working fluid. Heat rejection from the lower cycle to the upper cycle takes place in an adiabatic counterflow heat exchanger where the pressure in the upper and lower cycles are 0.4 and 0.6 MPa, respectively. In both cycles, the refrigerant is a saturated liquid at the condenser exit and a saturated vapour at the compressor inlet, If the mass flow rate of the refrigerant through the lower cycle is 0.4 kg/s, determine the mass flow rate of the refrigerant through the upper cycle, NOTE : Your answer should be in 2 decimal places and do not include the SI units when puting your answer in the answer boxarrow_forwardWhat are many different kinds and variations of the refrigeration cycle components؟arrow_forward3. Generate the SFEE equations for the following process equipment with neat diagrams: 1. Air Compressor 2. Boiler 3. Shell & Tube Heat Exchanger 4. Evaporator 5. Condenser 6. Cooling Towerarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Refrigeration and Air Conditioning Technology (Mi...Mechanical EngineeringISBN:9781305578296Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill JohnsonPublisher:Cengage Learning
Welding: Principles and Applications (MindTap Cou...Mechanical EngineeringISBN:9781305494695Author:Larry JeffusPublisher:Cengage Learning
Refrigeration and Air Conditioning Technology (Mi...
Mechanical Engineering
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:Cengage Learning
Welding: Principles and Applications (MindTap Cou...
Mechanical Engineering
ISBN:9781305494695
Author:Larry Jeffus
Publisher:Cengage Learning
Heat Transfer – Conduction, Convection and Radiation; Author: NG Science;https://www.youtube.com/watch?v=Me60Ti0E_rY;License: Standard youtube license