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54 Cards in this Set
- Front
- Back
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How many imperial gallons are in 1 cubic foot? |
6.24 |
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2.2Lbs = ___kg? |
1 KG |
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Relative density of air and water? |
RD 1 |
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What is the density of water? (Metric) |
1000kg/m³ |
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__mm Hg for AP at sea level. |
760mm |
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___" of Hg for AP at sea level |
29.92" |
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What is the density of water? (Imperial) |
62.4lb/ft³ |
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What is the density of air at STP? (Imperial) |
0.076lb/ft³ |
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What is the density of air at STP? (Metric) |
1.29 Kg/m³ |
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What is the weight of 1 imperial gallon of water? |
10 Lbs |
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What is the relative density of methane? |
0.6 |
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What PSI is 1" of Hg? |
.491 PSI |
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6.9 KPa = ___PSI |
1 PSI |
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Relative density of Hg? |
13.6 |
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AP at sea level? (PSI) |
14.7 PSI |
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What is the relative density of propane liquid? |
0.5 |
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What is the weight of 1 US gallon of water? |
8.33 lbs |
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How many L are in I M³ |
1000 L |
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What is the relative density of propane gas? |
1.5 |
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How many lbs of water are in 1 ft³? |
62.4 lbs |
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PSI of 1" WC |
.0361 PSI |
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How many US gallons are in 1 ft³ |
7.5 USG |
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PSI of 1' WC |
.433 PSI |
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__' of WC = 1PSI |
2.31' |
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How many cubic inches are in 1 cubic foot? |
1728in³ |
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1M WC = ___ kPa |
9.81 kPa |
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What is AP at sea level? (KPa) |
101 kPa |
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1 imperial gallon = ___ US gallons |
1.2 USG |
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What is the formula for converting F -> C? |
(F°-32) ÷ 1.8 |
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What is the formula for converting C -> F? |
(1.8×C°) + 32 |
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How much does water expand when it changes to ice? |
7.5% |
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What ratio is residential scale? |
1:50 |
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What ratio is commercial scale? |
1:100 |
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How many BTUs are required to change water into steam? |
970 BTUs |
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How many BTUs are required to change water to ice? |
144 BTUs |
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How much does water expand when it turns to steam? |
1700X |
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What is the boiling point of water? (°F) |
212 |
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What is the boiling point of water? (°C) |
100 |
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What is the freezing point of water? (°F) |
32 |
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What is the freezing point of water? (°C) |
0 |
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What is the steam pressure limit? |
15 PSI |
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What is the max allowable working pressure for cast iron boilers? |
30PSI |
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22/7 is considered the equivalent to what number? |
3.14 (pi) |
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What temp is water most dense at? (°F) |
39 |
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What temp is water most dense at? (°C) |
4 |
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How many BTUs are needed for 1 E.D.R for hot water? |
150 BTUs |
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How many BTUs are needed for 1 E.D.R for steam? |
240 BTUs |
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What angle is used for isometric drawings? |
30° |
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How many KJ are required to change water to ice |
335KJ |
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How many KJs are required to change water to steam? |
2257KJ |
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What is the specific heat of water? (KJ/Kg°C) |
4.2 |
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What is the specific heat of water? (BTU/Lb°F) |
1BTU/LB°F |
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What is the specific heat of steam and ice?(BTU/LB°F) |
.5 |
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What is the specific heat of steam and ice? (KJ/KG°C) |
2 |
