A heat exchanger is - Study guides, Class notes & Summaries

Which pump uses a high velocity jet of seawater to lower the pressure in the chamber around the converging nozzle? Jet (TRUE/FALSE) A fixed volume of fluid is discharged by an eductor regardless of head pressure. False Which type of heat exchanger has one or more coils of tubing installed inside a shell? Helical tube Which type of heat exchanger uses one fluid flow at right angles (90°) with the other fluid? Cross flow type The gear that is widely used in the main reduction gear C The ...

HVAC NATE Gas Heat Exam Prep (Latest 2024/ 2025 Update) 100% Correct Questions and Verified Answers| Grade A Q: When starting up a dual system, the temperature rise method for determining airflow cannot be used with compressor cycle of the heat pump because: Answer: The capacity of the system varies too much with outdoor temperature. Q: The flame pattern a technician would expect to see on a properly operating single stage gas furnace equipped with "in shot" type burner is a:...

When inspecting the heating equipment, the inspector is not required to _________. A. operate the system using normal operating controls B. open readily openable access panels provided by the manufacturer C. observe automatic safety controls D. operate heating systems when conditions may cause equipment damage CORRECT ANSWER D. operate heating systems when conditions may cause equipment damage What should an inspector do if they find a cracked heat exchanger? A. turn off the furnace ...

thermostat Ans: Is a temperature dep endent valve that opens and closes according to the engine coolant temperature to regulate the flow of coolant through the radiator and back to the engine Coolant Pump Ans: Are mechanically controlled devices that circulate coolant through the radiator and back to the engine. Radiator Ans: Is a liquid to air heat exchanger that reduces coolant temperature by transferring heat from the radiator to the outside air Degas bottle Ans: Is attached to t...

HVAC Gas Heat Certification Exam Prep (New 2024/ 2025 Update) Questions and Verified Answers 100% Correct | A Grade QUESTION Describe the difference between a single-rod (local sensing ) and dual-rod (remote sensing system as the pertain to flame rectification. Answer: Flame rectification system can be classified as eatiher single rod. (local sensing) or dual rod (remote sensing) single rod, consist of an igniter and sensor all in one-rod, Dual-rod system use a separate ig...

Which of the following factors listed below does not affect heat transfer? (pg. 1-2) A) Temperature Difference B) Surface Area C) Thermal Conductivity D) Density - ANSWER-D) Density An example of a poor conductor of heat is? (pg. 1-3) A) Aluminum Tubing B) Schedule 40 Steel Pipe C) Wood D) Water - ANSWER-C) Wood Thermal conductivity ('K') is? (pg. 1-3) A) Exactly the same for any metal B) The number of BTU's that will pass in 1 hour through a material 1" thick with an area o...

HVAC Test 1 Latest Update Graded A+ Absorption A refrigeration cycle where input energy is heat Adiabatic without gain or loss of heat Air Conditioning controlling air temperature humidity and quality Air Cooled Condenser a heat exchanger that transfers building heat to outdoor air Air Handler air moving equipment that can change air temperature humidity and quality BTU British thermal unit. 1 BTU will increase the temperature of 1 lb of water 1 degree F BTUH Rate of heat fl...

ABSA 4b Exam Latest Version. Warm Air Heating System Equipment In a warm air heating system the cold air return registers are located a) in exterior walls b) in interior locations c) under windows d) in floors e) in ceilings B The major disadvantage of an electric resistance coil furnace for warm air heating is a) the high cost of electricity b) the danger from electric shock c) the high cost of maintenance d) the large size of the furnace e) the location of electrical wi...

Craft: Boilermaker Study Guide Questions and Answers 100% Pass What is the initial component of the tray floor installation? The downcomer Identify the first part of the Heat Exchanger. The Tube What issues can arise from tube rolling? Improper expansion and depth Why are lockouts/tag outs used in valves, switches, and equipment? To prevent operation A scaffold "Red Tagged" by OSHA signifies: Do Not Use Identify part 2 of the Heat Exchanger. Dollar Plate Before dismantling a heat...

ABSA 4b Exam Latest Version. Warm Air Heating System Equipment In a warm air heating system the cold air return registers are located a) in exterior walls b) in interior locations c) under windows d) in floors e) in ceilings B The major disadvantage of an electric resistance coil furnace for warm air heating is a) the high cost of electricity b) the danger from electric shock c) the high cost of maintenance d) the large size of the furnace e) the location of electrical wi...