Hydronic Basics

Question 1

GPM?

Answer 1

Gallons Per Minute

Question 2

BTU?

Answer 2

British Thermal Unit
Measures the amount of heat energy

Question 3

NPSH?

Answer 3

Net Positive Suction Head
Refers to the difference between the pressure available at the pump’s suction and the vapor pressure of the liquid being pumped

Question 4

BHP?

Answer 4

Brake Horsepower
Measure of an engine’s power output without any power losses

Question 5

What ways are there to cool water?

Answer 5

Cooling Towers
Chillers
Geothermal

Question 6

Ways to heat water?

Answer 6

Boilers
HXs

Question 7

Types of Terminal Units

Answer 7

Fan Coils
VAV
Unit Heaters
Coils
Water Source Heat Pumps

Question 8

Hydronic Equipment Group

Answer 8

Pumps
Pump Accessories
Air Control
Heat Exchangers
Boilers
Plumbing

Question 9

Closed System

Answer 9

Definition: Heat transfer fluid circulates in a closed loop through piping and equipment.
Characteristics: Pressurized to prevent boiling, efficient heat transfer.
Common Use: Heating and cooling systems in buildings.

Question 10

Open System

Answer 10

Definition: Heat transfer fluid is exposed to the atmosphere at some point, often in a storage tank.
Characteristics: Water may be added to replace losses, may require water treatment.
Common Use: Less common, used in specific applications like some solar heating systems.

Question 11

Balancing Hydronic System:

Answer 11

Adjusting flow rates for even heat distribution.
Purpose: Optimize performance, save energy.
Importance: Consistent comfort, lower costs.