Heat Energy
Define the "3" methods of heat transfer. 1) What are they? 2) What is the difference between them?
Conduction: The transferring of heat through a solid
Convection: The transferring of heat through as the result of the movement of a fluid
Radiation: The transferring of heat by means of electromagnetic waves, emitted due to the temperature difference between two objects
What are the assumed sensible and latent Loads per person in a space?
250 Sensible & 200 Latent per person
What is the mascot of the college attended by Rob Johnson?
Golden Gophers
Which equation should the correction factor ALWAYS be used with? (Write this one out w/ CF)
Q = U x A x (CLTD + CF)
What are each of the following used for? Design weather conditions and Analysis weather conditions.
Design Weather: Used to Size Equipment
Analysis Weather: Used for Energy Analysis
A building with greater thermal mass will peak in temperature at what point in the day compared to those with a lesser thermal mass?
Later in the day
What are common sources of heat gain contributing the coil load and NOT the space load (Qty: 3)?
Fan heat, plenum & ventilation
What major historical site is located in San Antonio, TX?
The Alamo
Which equation do you use with cooling load and which do you use with heating loads?
Cooling: Q = U x A x (CLTD + CF)
Heating: Q = U x A x Delta T
Which ASHRAE standard addresses thermal comfort?
Standard 55
What two types of heat affects Building Loads?
Conduction and Radiation
What are the basic External and Internal Loads Impacting a building? (Write these out - 9 Total)
Solar radiation from windows
Conduction thru windows, walls, and roof
Internal Loads thru people, lights, misc
Infiltration
Ventilation
Which Billionaire recently rented out the entire city of Venice, Italy for their Wedding Day?
Jeff Bezos
The Sum-of-Peaks method is used for ______ Systems and Block Method is used for ______ Systems
Constant Volume, Multi-Zone VAV
What are degree days (Define and explain what it is relative to) and what is one limitation of this method?
Define: Estimated Days of Heating and Cooling for a given period of time. Measured relative to buildings balanced temperature.
Limitations: sun shining, wind, internal factors, and night setback/changing setpoints
What are the 6 basic factors affecting human thermal comfort? (Bonus
1) DB Temperature
2) Humidity
3) Air Speed
4) Radiant Affects
5) CLO
6) MET
What assumptions must be made when calculating Design Heating Loads (Write them out - Qty: 3)?
- No Solar radiation through windows
- No People
- No Lights
Incohearant Game: What popular phrase is meant by the following? Hatch Meows Hide Hobo Dad
"Catch me outside how bout that" - Danielle Bregoli aka Bhad Bhabie
What is the SHR of the Return Plenum when there is no heat pickup?
1
Above, 8672
In a space with an open return air plenum, what components would likely add to the heat gain in the plenum instead of, or in addition to, the space? (Qty: 3)
Exterior Walls, Lights, & Roof
Calculate the Solar Load Through the Window (State whether Sensible or Latent and your answer in BTUh):
Window Dimensions: 72 INCHES by 60 INCHES
U Factor of the window: 0.66 Btu/hr*ft^2*F
Shading Coefficient: 0.7
Indoor DB: 78 F
Outdoor DB: 95 F
4032 Btuh
Connections: What do these 4 words have in common? Laugh, Resort, Straw, Supper
Last ____
Calculate the U Value of a Roof made of 6" L.W. concrete block.
0.358
A building has a balance temperature of 60 degrees. If the dry bulb temperature is a constant 85 degrees for 3 days and 75 degrees for 4 days, this represents... (Degree Days)
135 CDD