A british thermal unit is - Study guides, Class notes & Summaries

A_____is the quantity of heat required to raise the temperature of I lb of water |°F. - ANSWER British thermal unit (BTU) Comfor is typically attained at normal cooling and heating temperatures with a relative humidity of about _____% - ANSWER 50% _________is the movement of air through distribution systems and building spaces. - ANSWER Air circulation ___________is the variation of air temperature in a building space that occurs when warm air rises to the ceiling and cold air drops to...

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...

______-phase AC Voltage is a combination of three alternating voltage waveforms, each displaced by 120 electrical degrees (1/3 Cycle) apart. (21-457) - Three ______-phase AC Voltage only contains one alternating voltage waveform. (21-457) - One A ____ ________ fuse can be reset after an overload and reused. (20-440) - Circuit Breaker A British Thermal Unit is the amount of heat needed to do what? (21-461) - Raise 1 pound of water 1 Fahrenheit A calorie is the amount of heat needed to do wh...

Specific Heat is - ANSWER-the amount of heat neccessary to raise the temperature of a substance one deg F What are two types of heat - ANSWER-sensible and latent Heat flow by conduction is - ANSWER-energy travelling from one molecule to another Radiation can be defined as - ANSWER-transfer of heat through the air without heating the air and is absorbed by a solid object Water freezes at - ANSWER-32 deg f Refrigeration is - ANSWER-the tranfer of heat from a place where it is not wa...

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 ...

Massachusetts Oil Burner Study Guide Rated A+ What is the voltage found at the TT terminals 24 volts What are the 8 steps of a no heat call 1 talk to customer 2 check tt.3 check to make sure an emergency switch is on 4check to make sure there is oil in the tank 5 check to make sure the main power going to the unit is on six check to make sure that tank shut off valve is open 7 know whether the tank is located above or below the burner I know the type and style of the system that is ...

HVAC EXCELLENCE QUESTIONS AND ANSWERS ALREADY GRADED A Heat which causes 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 la called? latent heat Heat added to the refrigerant in vapor state after the evaporation process is called, superheat A scroll compressor moves refrigerant by means of; involute spirals The movement of heat by way of fluid or is called; a...

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; : sensible heat. Heat which causes a change in state of a material without a change in temperature is called; : latent heat. Heat which is added to a vapor after the change of state occurs is called; : superheat. Heat can travel by; : conduction, convection, radiation. The movement of heat by way of fluid (or air) is called; 2 : convection . The movement of heat by direct contact is called; : conduction . The standa...

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;...