Exam 13: HVAC

In Florida, using ceiling fans combined with raising a home's temperature ____° F will generate about a 14% net savings in annual cooling energy use.

Match each item with a statement below. -Measures fuel fired central furnace and boiler efficiency.

When selecting space-conditioning equipment for low-load homes, one-piece heat pumps and air conditioners or ____ mini-splits may be a good option for properly sized, cost effective space conditioning.

Electric heaters are ____% efficient, but given the cost of electricity and the fact that most of the source energy is coal, they are not a very green solution unless powered by renewable energy.

The formula for ____ is the average annual heating divided by average annual power consumption.

____ coolers are commonly referred to as swamp coolers due to the algae growth on early models.

Oversized air conditioners are prone to ____ cycling, a condition where they turn on and drop the indoor temperature very quickly, then turn off.

____ ventilation removes moisture, odors, and pollutants directly at the source. Bath exhaust fans and kitchen range hoods are the most common examples.

Match each item with a statement below. -A heat pump's estimated seasonal heating output in Btus divided by the amount of energy that it consumes in watt-hours.

Similar in function to space heaters, stoves provide heat from a single, central location using solid wood, wood pellets, or ____ as fuel.

Match each item with a statement below. -Divide the duct tester fan flow by the area served.

Traditionally, duct system design locates supply registers at the ____.

The Internal Residential Code (IRC) requires that dwellings in cold climates must have heating equipment that can maintain indoor temperature at a minimum of ____ degrees.

Match each item with a statement below. -The sensible capacity divided by the total capacity (sensible plus latent capacity).

____ CO poisoning is used to indicate those cases when individuals are exposed on more than one occasion to the gas-usually at comparatively low concentrations.

____ ventilation provides equal parts supply and exhaust air through the use of fans.

____ have the potential to allow carbon monoxide and other pollutants to enter the house through gaps in the building envelope.

A higher SEER means ____.

Match each item with a statement below. -The process of carbon from fuel bonding with oxygen to form carbon dioxide (CO₂), water vapor, nitrogen, and air.

The ASHRAE standard for whole house ventilation in CFM is calculated as ____% of the CFA, plus 7.5 CFM times the number of bedrooms plus 1.