Latent heat transfer - Study guides, Revision notes & Summaries

As defined in chapter 1 of this text the primary purpose of refrigeration system is - Answer-To maintain a temperature Operators must keep refrigeration systems operating safely and efficiently. Which of the following best describes the areas of required knowledge for this to be possible. - Answer-Basic physical principles, Inter-preparation of information from temperature and pressure gauges. Basic operating principles. Mechanical refrigeration is a series of steps that - Answer-moves hea...

Stationary Engineer License Exam Prep Questions And Answers 100% Solved A ______ fuse is necessary for a circuit with a load of 21,000 watts and a voltage of 220 volts. A. 100 B. 150 C. 175 D. 200 A. 100 amps. Note: V = IR Therefore I = V/R 21,000 amps /220 volts = 95 amps At 0 psig, how many BTU's are required to change 1 lb of water at 212F to steam? A. 144 B. 180 C. 970 D. 1190 C. 970 BTU Radiation is: A. the movement of liquids or gases created by a temperature difference. ...

Difference between a substance melting point and freezing point Ans: Adding or Subtracting latent heat 40 lbs of pressure added to liquid refrigerant would have what effect on its boiling Ans: Boil at a higher temperature Amount of heat added to 1 pound of water to raise it one degree is a Ans: BTU What causes the fastest rate of temp transfer between two objects Ans: A 75 degree differential _______ best describes sensible heat Ans: Superheat A low side gauge reading of zero psig best...

NATE Air Conditioning and Heat Pump Exam Questions and Answers Updated 2024/2025 (GRADED) The combined output of a heatpump and its auxiliary heat should not exceed the calculated heat loss of a home by more than ____%. - ANSWER-15% What amount of auxiliary electronic heat is needed when the output of a heat pump on a design day equals 18,800 Btuh and the heat loss of a home is 29,700 Btuh? - ANSWER-3.2 kWh The three processes that transfer heat energy are conduction, convection, and _____...

LUOA Earth Science Module 6 Questions and Answers Rated A+ What are the 3 ways heat moves through the atmosphere? Conduction, convection, and radiation Which method of energy transfer does not require a medium? radiation Which type of heat energy moves through air, water, and magma? Convection ____________________ is the transfer of energy through space by various forms of electromagnetic energy. Radiation ____________ _________ is/are responsible for the movement of air through the atmosphe...

Stationary Engineer License Exam Prep Verified Solutions A ______ fuse is necessary for a circuit with a load of 21,000 watts and a voltage of 220 volts. A. 100 B. 150 C. 175 D. 200 A. 100 amps. Note: V = IR Therefore I = V/R 21,000 amps /220 volts = 95 amps At 0 psig, how many BTU's are required to change 1 lb of water at 212F to steam? A. 144 B. 180 C. 970 D. 1190 C. 970 BTU 3 multiple choice options Brainpower Read More Radiation is: A. the movement of liqui...

NATE Air Conditioning and Heat Pump Exam Questions and Answers Updated (GRADED A+) The maximum sensible cooling capacity of a heat pump should be within ______% of the calculated sensible heat gain of a structure with a large heating load. - ANSWER- +25% The combined output of a heatpump and its auxiliary heat should not exceed the calculated heat loss of a home by more than ____%. - ANSWER-15% What amount of auxiliary electronic heat is needed when the output of a heat pump on a design d...

Online Earth Science Questions and Answers Already Passed What term describes the temperature at which air becomes saturated, leading to condensation of water vapor? Dew Point: This is the specific temperature at which air reaches 100% relative humidity, causing it to become saturated and leading to the formation of dew or condensation. Which gas is produced when an oxygen molecule gains an additional oxygen atom? Ozone: This is a molecule consisting of three oxygen atoms, which f...

Fundamentals of Physics Exam 3 | Complete Solutions (Verified) If you triple the diameter of a ball, the volume of the ball will be: 27x larger Arches work well in construction because ________. a. The entire structure is under tension b. The entire structure is under compression c. The compression and tension balance each other out. If you have two differently-sized spheres of metal and they have the same mass, then ________. a. The smaller sphere is denser b. Their densities are proportion...

List at least five factors that must be controlled if a comfortable indoor environment is to be maintained. The factors that must be controlled include temperature, humidity, air motion, dust, bacteria, odors, toxic gases, and ionization. ((Ref: 1/1)) Describe in simple terms the basic process by which a refrigerant transfers heat energy. A refrigerant is used to transfer heat when it changes states. When liquid refrigerant evaporates into a vapor, heat is absorbed by the vapor. W...