Heat Loss Calculation

Question 1

Which direction does the heat always travel

Answer 1

From warm objects to cooler

Question 2

What is not considered when calculating heat loss

Answer 2

Interior walls of the building

Question 3

ODT is the acronym for

Answer 3

Outdoor design temperature

Question 4

What does the designed temperature difference refer to

Answer 4

The indoor temperature minus the outdoor temperature

Question 5

What is the recommended practice for determining room dimensions

Answer 5

Measurements should be rounded up or down to the nearest 0.25 of a foot

Question 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

Answer 6

Infiltration losses

Question 7

Which of the following heat loss types transfers heat through a ceiling

Answer 7

Transmission losses

Question 8

Finned baseboard heating capacity is expressed in

Answer 8

Btu per hour per liner foot

Question 9

Which type of application are kickspace heating units ideal for

Answer 9

Wall space is limited due to cabinets and cupboards

Question 10

What are 3 major components of a finned baseboard

Answer 10

Radiant fin, housing and supply tube

Question 11

What is the main function of the adjustable damper on a baseboard cabinet

Answer 11

To slow or increase the convection air flow

Question 12

What is tge procedure for calculating the amount of finned baseboard required in a given space

Answer 12

Divide the space heat loss by the output rating of the baseboard selected

Question 13

At design, which 2 factors determine the output of a finned baseboard

Answer 13

Supply water temperature and gpm

Question 14

What must be known in order to properly size a boiler

Answer 14

The total net heat loss of the space being heated

Question 15

What causes frequent cycling of a boiler

Answer 15

A boiler with an output that is to high for the application

Question 16

Which of the following should be followed to ensure proper boiler start-up

Answer 16

The boiler manufacturer

Question 17

Flow rate, temperature drop and pressure drop are used to size

Answer 17

The size of piping

Question 18

Which gallon flow rate will deliver 35,065 Btu per hr at a 20* f

Answer 18

3.5 gpm

Question 19

What must be known in order to properly size the output of a pump for a hydronic heating system

Answer 19

Required gpm and total feet of head

Question 20

What is the main function of an expansion handling device

Answer 20

To allow the water in the system to expand and contract as the system water heats and cools

Question 21

How do diaphragm tanks differ from standard closed expansion tanks

Answer 21

Diaphragm tanks have a bladder that separates the water and air

Question 22

I which section of the heating code will you find definitions

Answer 22

Section 2

Question 23

In which section of the heating code is quality of work referenced

Answer 23

Section 3

Question 24

Which section in the heating code deals with hydronic space heating

Answer 24

Section 12

Question 25

What is covered in section 15 of the heating code

Answer 25

Auxiliary systems

Question 26

What must be selected prior to installing rough in piping

Answer 26

Heat transfer units

Question 27

Why does ASHRAE not recommend the use of a high output baseboard

Answer 27

High output baseboard reduces comfort by not covering enough exposed wall

Question 28

What is the best location for installing baseboard f’in

Answer 28

On exterior walls with or without windows

Question 29

Which of the following reference materials will beat assist in the installation of baseboard f’in and cabinet

Answer 29

Manufacturers specifications

Question 30

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

Answer 30

Make a detail drawing showing piping materials and parts

Question 31

What is primary purpose of a heating system

Answer 31

To provide comfort to the individuals in the space