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HVAC - Hydronic Systems
A.
Bhatia
Overview
The circulation
of hot water or chilled water to provide heat or to cool spaces is known as a
“Hydronic” system. It
is a closed system where cold or hot water/steam runs through a heat exchanger
and air is then blown over the heat exchanger to achieve the desired room
conditions. Traditionally, HVAC systems are designed as All-Air Systems, which
means that air is cooled at one location and is than distributed to the required
space through ducts. All-Air Systems achieve the task of cooling a building by
convection only.
Hydronic systems provide
an alternative to cool/heat through a combination of radiation and convection
inside the building. Hydronic heating has three advantages over other types of
heating systems. These advantages are comfort, efficiency, and versatile
installation. With hydronics, you can move 40,000 Btu’s through a 3/4" copper
pipe through walls and between floors - or anywhere you need the heat - quietly
and efficiently. A forced air system requires a lot of duct space, about an 8"
by 14" duct, to move that much air with that many Btu’s into a room.
It is important to design
and lay out the hydronic system components professionally, so that the system
operates economically, with minimum energy and with proper distribution. If the
system is out of balance, more heat must be added or removed depending on
heating or cooling, which will lower the efficiency of the system and generate
additional costs.
This 4-hr course covers
the basics of hydronic system operation. It will familiarize the reader
with piping system layout and operation, as well as provide an awareness of
common circuiting arrangements. Topics that are discussed include auxiliary
hydronic system components such as pumps, expansion tanks, terminal units,
distribution piping and fittings.
This course material is
based entirely on US Corps of Engineers Construction Engineering Research
Laboratory (USACERL) technical report 99/20, May 1999, Appendix E - Hydronic
Systems
The student must take a multiple-choice quiz consisting of twenty (20) questions
at the end of this course to obtain PDH credits.
Specific Knowledge or Skill Attained
This course teaches the following specific knowledge and
skills:
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Understand the basics of
hydronic systems in heating and cooling applications
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Understand the
difference between once through, recirculation, open and closed systems
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Understand the
components of hydronic systems such as air separators, air vents, circulators,
relief valves, expansion tanks, flow control devices, miscellaneous valves and
fittings
-
Understand water system
piping classification for main and branch feeders
-
Learn about the various
piping circuits, including one pipe, two pipe, three pipe and four pipe
systems for various applications
-
Understand different
types of heating and cooling terminal units such as unitary equipment, air
handling units, baseboard heaters, convectors and radiators
-
Learn different types of
hydronic pumps including circulators, closed coupled centrifugal pumps and
horizontal split casing pumps
-
Understand pump
cavitation and pump installation considerations; parallel or series
arrangement
-
Learn basic hydronic
system testing, adjusting and balancing (TAB) procedures
Course
Click on the following
PDF attachment and review the document prior to taking a quiz for credit.
HVAC - Hydronic Systems (2.4 MB)
Having Trouble Downloading the PDF File?
Right
click on the link. Select "Save Target As..." Then
save on your desktop. To view the file, double click the icon on your
desktop and return to this page to take the quiz.
To obtain PDH credits for this course, you will need to take a quiz for
credit. Click on the link below.
(To take the quiz,
your web browser must be set to accept cookies. See how to
check your cookie settings.)
 
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Related Books
Fan
Handbook: Selection, Application, and Design
Hvac
Engineer's Handbook
HVAC
Systems Design Handbook
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