29 Questions
What is the unit of measurement for air quantity in FPS units?
CFM
How can the air quantity in Lbs/Hr be calculated from CFM?
Lbs/Hr = (CFM x 60) / 14.4
What is the formula to calculate the heat removed in the coil in BTU/Hr?
Heat removed = Lbs/Hr x heat removed (BTU-Hr/Lb)
What is the parameter used to calculate the capacity of the compressor?
Suction pressure, discharge pressure, RPM of compressor, and number of loaded cylinders
What is the formula to calculate the heat rejected in the condenser?
Heat rejected = compressor capacity + work done by compressor
What is the purpose of heat load estimation in HVAC systems?
To balance the heat flow into and out of the conditioned space
What is the unit of measurement for air-conditioning and refrigeration?
Tons of Refrigeration
What type of heat gain occurs when direct or diffused solar heat energy enters the room through glass windows?
Radiation gain
What is the purpose of shading devices such as Venetian blinds and sunshades?
To limit radiation gain into the room
What is the formula to calculate the capacity of a chiller in TR?
GPM x temp Diff / 24
What is the term used to describe the percentage of radiation that is allowed into the room through the glass after considering the shading effect?
Shading factor
What is the range of room temperature applicable for the given air conditioner?
22 to 28°C
What is the range of relative humidity applicable for the given air conditioner?
50 to 70%
What is the ESP of the given air conditioner?
25mmWG
What is the range of capacities available for the given air conditioner in TR?
5 to 145 TR
What is the unit of measurement for the specific gravity of materials?
g/cm³
What are the properties of materials that are mentioned in the text?
Physical, chemical, and thermal properties
What is the primary focus of the properties of materials discussed in the topic?
Physical and chemical properties
What is the term that describes the change in volume of a material in response to a change in temperature?
Coefficient of thermal expansion
What is the primary difference between a lubricated and non-lubricated compressor?
Presence of lubricant
What is the term that describes the ability of a material to conduct electricity?
Electrical conductivity
What is the primary function of an IGV in a centrifugal compressor?
To guide the air flow
What is the term that describes the ability of a material to resist corrosion?
Corrosion resistance
What is the primary purpose of an agitator in a process industry?
To induce motion and provide circulation
What is the main difference between agitation and mixing?
Agitation induces motion, while mixing is the random distribution of two or more phases or substances
What is the classification of agitators based on?
Mounting on the vessel
What is the device responsible for the actual mixing in a tank?
Impeller
What is the purpose of baffles in a mixing tank?
To improve mixing efficiency
What is the purpose of the lantern stool in a top entry agitator?
To provide a seal for the shaft
Assess your understanding of heat removal and capacity measurement in HVAC systems, including enthalpy calculations and air quantity measurements. Evaluate your knowledge of compressor performance and capacity evaluation methods.
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