Question
Alice Parker’s invention of the heating furnace was a crucial step in the development of this technology. For 10 points each:
[10e] Name this technology that maintains the comfort of an indoor space by controlling temperature, humidity, and air quality. It is known by a four-letter acronym.
ANSWER: HVAC (“H-vack”) systems [or heating, ventilation, and air conditioning systems; or HVACR systems or heating, ventilation, air conditioning, and refrigeration systems or HACR systems or heating, air conditioning, and refrigeration systems; prompt on central heating, ventilation, air conditioning, AC, environmental control systems, or climate control systems by asking “what general technology with a four-letter acronym performs that function?”]
[10h] The radiant time series method for calculating this quantity during HVAC system design has replaced the older TETD (“T-E-T-D”) and CLTD methods. This quantity, which is commonly expressed in BTU per hour, is proportional to ventilation rate times the required change in temperature.
ANSWER: load [accept heating load, cooling load, sensible load, latent load, or air conditioning load; accept duty; prompt on heat gain, heat loss, Q, or power] (TETD is total equivalent temperature difference and CLTD is cooling load temperature difference.)
[10m] Sensible heat ratios and required air flow rates are determined with these charts that plot dry bulb temperature and humidity ratio. They are named for the discipline that studies the thermodynamics of moist air.
ANSWER: psychrometric charts [accept psychrometrics; reject “psychometrics”]
<Other Science>
Summary
| 2023 ACF Nationals | 04/22/2023 | Y | 20 | 12.00 | 100% | 20% | 0% |
Data
| Chicago A | Houston A | 10 | 0 | 0 | 10 |
| Chicago B | Virginia A | 10 | 0 | 10 | 20 |
| Stanford A | Claremont A | 10 | 0 | 10 | 20 |
| Columbia B | South Carolina A | 10 | 0 | 10 | 20 |
| Georgia Tech B | Cornell B | 10 | 0 | 0 | 10 |
| MIT A | Illinois A | 10 | 0 | 0 | 10 |
| Florida A | Indiana A | 10 | 0 | 0 | 10 |
| Johns Hopkins A | Imperial A | 10 | 0 | 0 | 10 |
| Maryland A | Vanderbilt A | 10 | 0 | 0 | 10 |
| Brown A | Minnesota B | 10 | 0 | 0 | 10 |
| Northwestern A | NYU A | 10 | 0 | 0 | 10 |
| Harvard A | Penn A | 10 | 0 | 0 | 10 |
| Rutgers B | Columbia A | 10 | 0 | 0 | 10 |
| Purdue A | Toronto A | 10 | 0 | 0 | 10 |
| North Carolina A | UC Berkeley A | 10 | 0 | 0 | 10 |
| Yale A | UC Berkeley B | 10 | 0 | 0 | 10 |
| McGill A | Texas A | 10 | 0 | 0 | 10 |
| Iowa State A | Cornell A | 10 | 0 | 0 | 10 |
| Florida B | Georgia Tech A | 10 | 0 | 0 | 10 |
| Penn State A | Chicago C | 10 | 0 | 10 | 20 |