Btu british thermal unit - Study guides, Class notes & Summaries

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...

3.3.9 Arc Mapping correct answers The systematic evaluation of the electrical circuit configuration, spatial relationship of the circuit components, and identification of electrical arc sites to assist in the identification of the area of origin and analysis of the fire's spread. 3.3.12 Area of Origin correct answers A structure, part of a structure, or general geographic location within a fire scene, in which the "point of origin" of a fire or explosion is reasonably believed to be ...

HVAC EXAM 1 2024 WITH 100% ACCURATE SOLUTIONS Matter exists in what three forms? - correct answer solid, liquid, gas What is temperature measured by? Quantity or intensity - correct answer Intensity Define British thermal unit (Btu) - correct answer Measure of heat energy - amount of energy needed to raise 1 lb of water 1 degree F How much heat is required to raise the temp of 100 lb or water from 70F to 120F - correct answer Q=1000lb*(1btu / change of temp) so 1000*(1/ 50) = 50,0...

Heat which causes a change in temperature of a substance is called; : Sensible Heat. heat added to substance without a rise in temperature; (example: liquid refrigerant to gas) this process is called? : Latent heat of vaporization. Heat added to the refrigerant in a vapor state after the evaporation process is called; : Superheat. A scroll compressor move refrigerant by means of; : Involute Spirals. The movement of heat by way of fluid (or air) is called; : Convection. The movement o...

Heat which can cause a change in temperature of a substance is called; : Sensible Heat Heat added to a substance without a rise in temperature;(example: liquid refrigerant to gas) this process is called? : Latent Heat of Vaporization Heat added to the refrigerant in a vapor state after the evaporation process is called; : Superheat A scroll compressor move refrigerant by means of; : Involute spirals The movement of heat by way of fluid(of air) is called; 2 : Convection The movement ...

Heat which causes a change in temperature of a substance is called; - ANSWER sensible heat. Heat which causes a change in state of a material without a change in temperature is called; - ANSWER latent heat. Heat which is added to a vapor after the change of state occurs is called; - ANSWER superheat. Heat can travel by; - ANSWER conduction, convection, radiation. The movement of heat by way of fluid (or air) is called; - ANSWER convection . The movement of heat by direct contact i...

Heat which causes a change in temperature of a substance is called; - ANSWER sensible heat. Heat which causes a change in state of a material without a change in temperature is called; - ANSWER latent heat. Heat which is added to a vapor after the change of state occurs is called; - ANSWER superheat. Heat can travel by; - ANSWER conduction, convection, radiation. The movement of heat by way of fluid (or air) is called; - ANSWER convection . The movement of heat by direct contact is called;...

Conservation of Energy Principle Correct Answer-During an interaction, energy can change from one form to another but the total amount of energy remains constant. i.e. Energy cannot be created or destroyed. First Law of Thermodynamics Correct Answer-The first law of thermodynamics is a version of the law of conservation of energy, adapted for thermodynamic systems. The law of conservation of energy states that the total energy of an isolated system is constant; energy can be transformed from ...

Upflow Furnace: : Is used to describe furnaces that stand upright and blow air upward. These systems are designed for first floor installation with attic ductwork or basement installation with ductwork positioned below the first floor. Low boy furnace: : Similar to Upflow except the furnace is shorter so it can fit in basement with low ceilings. Down flow furnace: : Furnace goes into the attic and pushes air down through vents. Ductwork may be in a concrete slab floor or a crawl spa...

Absolute Temperature. A temperature measured in Kelvins (K) or Rankines (R). Accelerant. A fuel or oxidizer, often an ignitible liquid, intentionally used to initiate a fire or increase the rate of growth or spread of fire. Accident. An unplanned event that interrupts an activity and sometimes causes injury or damage or a chance occurrence arising from unknown causes; an unexpected happening due to carelessness, ignorance, and the like. Ambient. Someone's or something'...