HVAC

Question 1

If you wish to minimize the first cost of the heating and cooling system

Answer 1

Choose the simplest possible all-air system:
VAV
CAV

Or choose a system that involves no centralized ductwork or piping:
Packaged terminal units and through the wall units

Question 2

Minimize operating costs and energy consumption

Answer 2

Choose a central system that heats and cools spaces with maximum efficiency:
VAV
Active chilled beam
Passive chilled beam
Hydronic convectors
Hydronic radiant heating and cooling

Or choose a system that uses ambient heat from the surrounding environment:
Closed loop hear pump system

Or in medium sized or small buildings, consider a passive system:
Passive solar heating
Natural ventilation cooling
Thermal mass cooling
Evaporative cooling

Question 3

Maximize control of air quality and air velocity

Answer 3

Choose systems that control air separately from temperature:
VAV
Active chilled beam

Choose systems that provide constant high volumes of air:
CAV

Question 4

Maintain occupant comfort in spaces that undergo large changes in heating and cooling load

Answer 4

Choose a system that can respond to large changes in heating and cooling load:
VAV
Fan coil terminals

Question 5

Minimize system noise

Answer 5

Choose a system that operates at low air velocity and whose moving parts are distant from the occupied spaces:
VAV
CAV
Active chilled beam
Passive chilled beam
Hydronic convectors
Hydronic radiant heating and cooling

In medium sized or smaller buildings, consider a passive system:
Passive solar heating
Thermal mass cooling

Question 6

Minimize the visual obtrusiveness of the heating and cooling system

Answer 6

Choose a system that has minimal hardware in the occupied spaces:
Any central all air or air and water system
Hydronic radiant heating and cooling

In medium sized or smaller buildings, a passive system:
Passive solar heating
Natural ventilation cooling
Thermal mass cooling
Evaporative cooling

Question 7

Maximize the flexibility of rental space and the adaptability of the heating and cooling system to shave reconfiguration over time

Answer 7

Choose a central air system that has minimal hardware in the occupied spaces of the building and that can provide local itt zoned control over temperature:
VAV

Choose an all water system that allows easy temperature control of individual spaces:
Fan coil terminals
Hydronic convectors

Choose a local system that has no ductwork or piping:
Through the wall and packaged terminal units

Question 8

Minimize the floor space used for the mechanical system

Answer 8

Choose an air and water system that works with smaller sized air handling components:
Active chilled beam
Passive chilled beam
A local system that has no ductwork or piping like a packaged terminal unit and through the wall unit

Or an all water system:
Fan coil terminals
Hydronic convectors
Hydronic radiant heating and cooling

In medium sized or small buildings choose a passive system:
Passive solar heating
Natural ventilation cooling
Thermal mass cooling
Evaporative cooling

Question 9

Minimize the floor to floor height of the building

Answer 9

VAV
Chilled beams
Packaged terminal units and through the wall units
Fan coil terminals
Hydronic convectors
Hydronic radiant heating and cooling
Passive system

Question 10

Minimize maintenance

Answer 10

VAV
CAV
Chilled beams
Hydronic convectors
Hydronic radiant heating and cooling
Passive systems