WorksheetsPhcc Ch 13
Total questions: 10
Worksheet time: 5mins
This type of water heater uses a heat source to gradually heat water in a tank to a desired set point.
storage or tank type
high energy
tankless
gradual
Tank-type water heaters:
are the least commonly used.
are lower in energy loss.
require a greater equipment footprint.
have more complex controls.
Tankless water heaters:
have higher initial costs.
have a lower BTU per hour rating.
have lower energy input rates.
have less complex controls.
What are possible heat sources for a storage-type water heater?
A separate boiler.
Solar panels.
Its own input source and controls.
All are correct.
What are the two key factors when deciding on storage tank size?
heating demands
recovery rate
geography
A and B
Tankless water heaters do not store any hot water in reserve. Therefore, they:
require a gas system with larger diameter pipes or higher pressures.
must convert fuel at a higher rate than storage tank models.
A, B, and D
must use heavier gauge wire or higher voltage.
A point-of-use electric water heater:
allows small amounts of water to be delivered to the fixture instantly.
means the user does not have to run the water until the hot water reaches the fixture.
A, B, and D.
allows large amounts of water to be conserved.
__________ use either a fuel-fired or electric element to heat the water.
Direct-fired tankless units
In-direct tankless units
Hot water heaters
Solar water heaters
In an indirect-fired water heater, what is passed through a coil or containment tank that is in turn directly connected to the potable water source?
oil, gas, tube, pipe
steam, hot water, coil, containment tank
steam, hot water, tube, pipe
oil, gas, coil, containment tank
Solar energy collectors are usually divided into three categories: __________, __________, and __________.
radiators, conductors, convectors
low temperature, medium temperature, concentrators
low temperature, medium temperature, high temperature
drain back, high pressure, vacuum tube
