HYDRONICS HEATING AND COOLING
STUDY GUIDE
What-is-the-definition-of-human-comfort-relative-to-temperature?---ans-✔✔When-you-feel-
neither-warm-nor-cool.
pg.-1
Which-type-of-hydronic-system-would-use-gravity-flow?---ans-✔✔Low-temperature-
heating.
pg.5
Describe-a-hydronic-system.---ans-✔✔Heating-and-cooling-system-that-uses-water-or-
HTF-as-a-heat-transfer-medium.
pg.1
Brine-or-a-water/glycol-mixture-is-commonly-referred-to-as___.---ans-✔✔HTF
pg.1
In-which-year-did-Willis-Carrier-patent-the-dew-point-control-system?---ans-✔✔1907
pg.7
How-many-BTUs-are-required-to-heat-one-lb-of-water-from-32F-to-212F?---ans-✔✔180-
BTUs
pg.-22
In-order-to-provide-accurate-indoor-temperatures-the-heat-supply-to-the-building-must-be-
equal-to___.---ans-✔✔Heat-loss-of-the-building
pg.-5
What-are-the-4-types-of-heat-transfer---ans-✔✔Conduction,-convection,-radiation,-and-
evaporation.
pg.-14
Calculate-the-GPM-for-an-80MBH-heat-load-using-water-as-the-HTH-with-a-change-in-
temperature-of-20F.---ans-✔✔GPM=btuh/(Delta-T-X-specific-heat-X-500)
GPM=80,000/(20-X-1-X-500)
GPM=80,000/10,000
GPM=8
, pg.-22
How-is-TEL-(total-equivalent-length)-measured-and-calculated?---ans-✔✔Measure-the-
longest-circuit-and-add-50%-for-fittings-and-terminal-units.
pg.45
Which-type-of-heat,-when-added-or-removed-from-a-substance-creates-a-change-of-
state?---ans-✔✔Latent-heat
pg.-18
Define-humidity.---ans-✔✔The-amount-of-moisture-in-the-air.
pg.-24
What-is-dry-bulb-temperature?---ans-✔✔Temperature-of-air-taken-with-a-standard-
thermometer.
pg.-25
Which-tool-is-used-to-determine-relative-humidity?---ans-✔✔Sling-psychrometer
Pg.-34
How-is-rate-of-flow-measured?---ans-✔✔Gallons-per-minute-(GPM)
pg.-48
Select-3-types-of-heat-transfer.---ans-✔✔Radiation,-convection,-conduction
pg-15
Which-heat-transfer-describes-the-condition-when-a-body-loses-heat-to-cooler-surfaces?---
ans-✔✔Radiation
pg-15
What-is-the-pressure-of-1-ft-of-water-(vertical)?---ans-✔✔0.433-psig/ft
pg-45
___-is-any-pressure-less-than-atmospheric.---ans-✔✔Vacuum
pg-42
Pressure,-according-to-the-height-of-a-liquid-is-called-___.---ans-✔✔Static-head
Convert-92'-of-static-head-to-psig.---ans-✔✔92-X-0.433=39.836-psig
pg-46
Any-pressure-above-a-perfect-vacuum-is-measured-as___---ans-✔✔Psia
pg-42
What-is-atmospheric-pressure-at-sea-level?---ans-✔✔14.7-psia
pg-41
STUDY GUIDE
What-is-the-definition-of-human-comfort-relative-to-temperature?---ans-✔✔When-you-feel-
neither-warm-nor-cool.
pg.-1
Which-type-of-hydronic-system-would-use-gravity-flow?---ans-✔✔Low-temperature-
heating.
pg.5
Describe-a-hydronic-system.---ans-✔✔Heating-and-cooling-system-that-uses-water-or-
HTF-as-a-heat-transfer-medium.
pg.1
Brine-or-a-water/glycol-mixture-is-commonly-referred-to-as___.---ans-✔✔HTF
pg.1
In-which-year-did-Willis-Carrier-patent-the-dew-point-control-system?---ans-✔✔1907
pg.7
How-many-BTUs-are-required-to-heat-one-lb-of-water-from-32F-to-212F?---ans-✔✔180-
BTUs
pg.-22
In-order-to-provide-accurate-indoor-temperatures-the-heat-supply-to-the-building-must-be-
equal-to___.---ans-✔✔Heat-loss-of-the-building
pg.-5
What-are-the-4-types-of-heat-transfer---ans-✔✔Conduction,-convection,-radiation,-and-
evaporation.
pg.-14
Calculate-the-GPM-for-an-80MBH-heat-load-using-water-as-the-HTH-with-a-change-in-
temperature-of-20F.---ans-✔✔GPM=btuh/(Delta-T-X-specific-heat-X-500)
GPM=80,000/(20-X-1-X-500)
GPM=80,000/10,000
GPM=8
, pg.-22
How-is-TEL-(total-equivalent-length)-measured-and-calculated?---ans-✔✔Measure-the-
longest-circuit-and-add-50%-for-fittings-and-terminal-units.
pg.45
Which-type-of-heat,-when-added-or-removed-from-a-substance-creates-a-change-of-
state?---ans-✔✔Latent-heat
pg.-18
Define-humidity.---ans-✔✔The-amount-of-moisture-in-the-air.
pg.-24
What-is-dry-bulb-temperature?---ans-✔✔Temperature-of-air-taken-with-a-standard-
thermometer.
pg.-25
Which-tool-is-used-to-determine-relative-humidity?---ans-✔✔Sling-psychrometer
Pg.-34
How-is-rate-of-flow-measured?---ans-✔✔Gallons-per-minute-(GPM)
pg.-48
Select-3-types-of-heat-transfer.---ans-✔✔Radiation,-convection,-conduction
pg-15
Which-heat-transfer-describes-the-condition-when-a-body-loses-heat-to-cooler-surfaces?---
ans-✔✔Radiation
pg-15
What-is-the-pressure-of-1-ft-of-water-(vertical)?---ans-✔✔0.433-psig/ft
pg-45
___-is-any-pressure-less-than-atmospheric.---ans-✔✔Vacuum
pg-42
Pressure,-according-to-the-height-of-a-liquid-is-called-___.---ans-✔✔Static-head
Convert-92'-of-static-head-to-psig.---ans-✔✔92-X-0.433=39.836-psig
pg-46
Any-pressure-above-a-perfect-vacuum-is-measured-as___---ans-✔✔Psia
pg-42
What-is-atmospheric-pressure-at-sea-level?---ans-✔✔14.7-psia
pg-41
