Heat of combustion Study guides, Class notes & Summaries

REHS Exam (Latest 2023/ 2024 Update) Questions and Verified Answers| 100% Correct |Grade A Q: Which of the following is non-toxic to aquatic organisms, a good viricide, and adds oxygen to treated wastewater effluents? a. ozone b. calcium hypochlorine c. sulfur dioxide d. chlorine dioxide Answer: ozone Q: The typical limitation of use of the septic tank absorption field system is due to a. cost b. land use considerations c. soil type and size requirements d. a...

The following are types of what? LPG, CNG, piped natural gas or solid fuel (coke). - correct answer Portable fueled salamanders/space heaters National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL) for carbon monoxide - correct answer 35 parts per million (ppm) over an 8 hour period What is the third leading cause of fires in buildings under construction ? - correct answer temporary heating What is direct heat flow through matter? - correc...

Combustion Requirements (3) - Answer Air, Fuel, Heat Complete Combustion Produces (4) - Answer Water vapor, carbon dioxide, heat, and non combustible ashes incomplete combustion produces (3) - Answer carbon monoxide, hydrocarbons, and other gases rate at which fuel burns is controlled by - Answer the amount of available air air to fuel ratio is a - Answer critical factor in obtaining optimum fuel combustion BTU - Answer British Thermal Unit, The amount of energy needed...

Combustible Liquid - Correct answer-A liquid with a flash point ABOVE 100F 12.5 - Correct answer-If the current flowing out from an electrical panel is 12.5 amps, and it then flows through an electrical load of 1500 watts, what is the amperage of the remaining current flow of the return circuit? 1000 - Correct answer-If a hair dryer draws 8.3amps (in a home with 120-volt service), what is the wattage? *Power (P) = current (I) x voltage (V) Watts = amps x volts 1987 - Correct answer-The y...

The term "scientific method of fire investigation" means: -Answer use scientific logic. ________ is the most critical component of ordinary fires, because it is essential for combustion. -Answer Oxygen To understand chemical combinations, it should be understood that every atom consists of a central core of subatomic particles called ________ and ________. -Answer protons; neutrons An example of an element is: -Answer All of these. The chemistry of carbon-containing compounds i...

_________ are necessary for complete combustion correct answer: time, temperature, mixture, and atomization if the steam pressure gauge indicates 200 PSIG, the absolute pressure is______ correct answer: 214.7 a boiler is operating at 400 PSI, and the safety valve opens at 410 PSI and closes at 398 PSI. The blowdown is______psi correct answer: 12 an oil cooler is commonly used with a(n) ________ when operating in conjunction with a turbo-generator correct answer: steam turbine a boiler is produci...

1 - Absolute pressure is equal to standard sea-level plus: - Gauge pressure 1 - All of the following are types of scale except: - Silicone Types of scale include: - Silicate - magnesium carbonate - Calcium Carbonate 1 - Complaints in the winter that it is too cold in a building can be offset by: - Raising the humidity and the temperature 1 - Copper tubing is standardized on the basis of use into standard - Wall thickness schedules 1 - Define absolute pressure - The total pressure that i...

CSIA C-DET Latest 2024 Already Passed Appliance Eqipment, usually built in standardized sizes or types, installed or connected as a unit Approved Acceptable to the authority having jurisdiction. American society for testing materials ASTM Authority having Jurisdiction The organization, office or individual responsible for approving equipment, installations or procedures Baffle Object placed in an appliance to change the direction, extend the path, or slow the flow of air, air-f...

What must you do if you notice code violations in a homeowners house? - Answer Notify them and recommend ways to address them What must be done when performing an annual tune-up on a heating system? - Answer A combustion efficiency test and a copy must be posted on site Whenever a furnace, direct fired hot water heater, or boiler is installed the total installation must be brought into compliance with what requirements BEFORE appliance can be fired? - Answer NFPA 31 When an eme...

What is the first thing a tech should do when arriving at a no combustion call? - Answer- Ask how many times the customer reset the unit. What is the best long term solution for preventing a clogged nozzle? - Answer- -Remove any underground storage tanks. -Install a quality oil filter. -Cut the suction line 10" above the tank outlet to prevent sludge. Hot water and steam valves are interchangeable. - Answer- False When in the presence of a flame, a cad cell normally reads.. - Answe...