Manual N - Commercial Load Calculation 5th Edition

These flashcards cover key terms and concepts from the Manual N - Commercial Load Calculation 5th Edition lecture notes.

Air Loading Factor

The ratio of supply air delivered to a conditioned space divided by the floor area.

Radiant Gain

A type of internal heat gain that involves energy transferred through electromagnetic waves.

Outdoor Design Conditions

Determined by location and affects factors like Daily Range, Ventilation Piping, and Duct Sealing.

Total Latent Cooling Load

The sum of the Peak Latent Load plus relevant system latent loads.

Safety Factors

Additional considerations required when based on accurate load calculations.

Isolated

Garages must be architecturally and mechanically isolated from occupied spaces.

Positive Effect

A balanced air distribution system can have this effect on space pressure.

Hygroscopic

Materials that absorb moisture from the air.

Heating Design Value

The specified dry bulb temperature used for heating calculations.

Third-party Interpretation

Manual N which offers guidance and procedures.

Latent Loss

Loss identified in moisture migration equations.

Ambient Condition

The condition determined within a ceiling cavity by heat balance calculations.

Fixtures

Components that may be entirely within the conditioned space or recessed in a ceiling.

Cooling Efficiency

Primary concern in determining climate requirements.

Ventilation Rate

The flow of outdoor air crossing thermal envelope boundaries.

Exposure Pipe Length Determination

Can be achieved through On-Site Measurement.

Role of Computers

Used in construction for actions like sending invoices or scheduling work.

Operating Schedules

Assigned to machinery and appliances.

Reflectivity Effect

Foreground surface reflectivity affects HTM, SC, and SHGC values.

Heat Gain Factors

Multiple factors influence except the average shaft power of one hour.

Grains Difference Values

Used for calculating latent loads during heating seasons.

Heat Gain Data Provision

It is impossible to provide complete data for all equipment classes.

Fifth Edition of Manual N

An interpretation that fully complies with ANSI standards.

Indoor Grains Value Calculation

Involves the use of wet-bulb temperature and relative humidity.

Cold Weather Cooling Requirements

Can be satisfied by systems with air-side economizers.