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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

Prior to making a materials list, it is good practice to

Make a detail drawing showing piping materials and parts