Heat Load Calculations

Why is it important to know what factors impact the heat load of a home?

• to select the proper air duct materials and fittings

• to select the appropriate HVAC equipment

• to select and locate grilles, registers and diffusers

• to select the appropriate building material for a home

A higher number of occupants in a home can______.

• decrease delta T of a home

• increase the heat loss of a home

• increase the heat gain of a home

• decrease the amount of infiltration in a home

Heat load is

• the amount of heat a building needs to maintain the indoor temperature at the desired levels

• the amount of sensible heat that must be removed by the air conditioning equipment in a building

• the amount of heating and cooling the equipment can withhold in order to maintain the design temperature at the desired levels

• the input BTU rating of the HVAC equipment

Which one of the following factors can impact both the heat gain and heat loss of a building?

• electric appliances, the number of occupants, building materials and the level of insulation used.

• the type of furniture used with the building

• the orientation of windows and skylights

• the coloring of appliances and the ductwork uded in the home

Which design temperature includes both sensible and latent heat?

• indoor temperatures

• winter design temperatures

• summer design temperatures

• delta T temperatures

Which three categories include factors that need to be considered when calculating the heating and cooling load of a home?

• climate, design conditions, and building details

• building orientation, climate, and home occupants

• insulation, building design, and appliances

• outdoor relative humidity

What is the typical indoor design temperature during summer?

• 68 degrees Fahrenheit

• 75 degrees Fahrenheit and 50% relative humity

• 60 degrees Fahrenheit

• 85 degrees Fahrenheit and 30% humidity

Manual J Calculations should only be used for

• Commercial applications

• Residential applications

• outdoor patio applications

• solarium applications

Which of the following is not a benefit of having a properly sized HVAC system

• less wear and tear on the HVAC equipment

• better humidity control which prevents mold growth

• a greater temperature difference between rooms in their homes

• can provide greater comfort for occupants in the home

What is the purpose of performing a heat load calculation according to manual J.

• provides standards and protocols to determine the amount of insulation needed in a home and the equipment needed to install this insulation

• provide standards and protocols for the proper selection of grilles, registers and diffusers

• provides standards and protocols to determine the amount of heating and cooling a home needs in order to select the appropriate sized HVAC equipment

• provides the standards and protocols to determine the amount of ductwork needed in a home and the equipment needed to install the ductwork