Flashcards in Heat Loss Calculation Deck (31)
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1
Which direction does the heat always travel
From warm objects to cooler
2
What is not considered when calculating heat loss
Interior walls of the building
3
ODT is the acronym for
Outdoor design temperature
4
What does the designed temperature difference refer to
The indoor temperature minus the outdoor temperature
5
What is the recommended practice for determining room dimensions
Measurements should be rounded up or down to the nearest 0.25 of a foot
6
Which type of heat loss results in cool air from the outside being drawn into the building through cracks around windows, doors and loose construction
Infiltration losses
7
Which of the following heat loss types transfers heat through a ceiling
Transmission losses
8
Finned baseboard heating capacity is expressed in
Btu per hour per liner foot
9
Which type of application are kickspace heating units ideal for
Wall space is limited due to cabinets and cupboards
10
What are 3 major components of a finned baseboard
Radiant fin, housing and supply tube
11
What is the main function of the adjustable damper on a baseboard cabinet
To slow or increase the convection air flow
12
What is tge procedure for calculating the amount of finned baseboard required in a given space
Divide the space heat loss by the output rating of the baseboard selected
13
At design, which 2 factors determine the output of a finned baseboard
Supply water temperature and gpm
14
What must be known in order to properly size a boiler
The total net heat loss of the space being heated
15
What causes frequent cycling of a boiler
A boiler with an output that is to high for the application
16
Which of the following should be followed to ensure proper boiler start-up
The boiler manufacturer
17
Flow rate, temperature drop and pressure drop are used to size
The size of piping
18
Which gallon flow rate will deliver 35,065 Btu per hr at a 20* f
3.5 gpm
19
What must be known in order to properly size the output of a pump for a hydronic heating system
Required gpm and total feet of head
20
What is the main function of an expansion handling device
To allow the water in the system to expand and contract as the system water heats and cools
21
How do diaphragm tanks differ from standard closed expansion tanks
Diaphragm tanks have a bladder that separates the water and air
22
I which section of the heating code will you find definitions
Section 2
23
In which section of the heating code is quality of work referenced
Section 3
24
Which section in the heating code deals with hydronic space heating
Section 12
25
What is covered in section 15 of the heating code
Auxiliary systems
26
What must be selected prior to installing rough in piping
Heat transfer units
27
Why does ASHRAE not recommend the use of a high output baseboard
High output baseboard reduces comfort by not covering enough exposed wall
28
What is the best location for installing baseboard f'in
On exterior walls with or without windows
29
Which of the following reference materials will beat assist in the installation of baseboard f'in and cabinet
Manufacturers specifications
30
