HVAC Systems
Heating, ventilation and air conditioning systems - design and dimensions.
Air - Humidifying with Steam, SI units
Using steam to humidify air.
Air Ducts - Sizing
Required duct area vs. air flow.
Combustion Appliances - Exhaust Temperatures
Exhaust and outlet temperatures fuels like natural gas, liquefied petroleum, diesel and more.
Dehumidification - Removing Moisture from Air
Dehumidifying by cooling, adsorption or absorption.
Ducts or Pipes through Steel Joists - Maximum Sizes
Maximum sizes of ducts or pipes through K series joists.
Fuels - Combustion Air and Flue Gases
Combustion air and flue gas for common fuels - coke, oil, wood, natural gas and more.
Fuels - Higher and Lower Calorific Values
Higher and lower calorific values (heating values) for fuels like coke, oil, wood, hydrogen and others.
Fuels and Chemicals - Autoignition Temperatures
Autoignition points for fuels and chemicals like butane, coke, hydrogen, petroleum and more.
Heat, Work and Energy
Heat vs. work vs. energy.
HVAC Abbreviations
Commonly used HVAC abbreviations.
HVAC Diagram - Online Drawing Tool
Draw HVAC diagrams online with this Google Drive drawing tool.
HVAC Terms
Common HVAC industry terms like absolute humidity, pressure, temperature and more.
Indoor Temperature and Humidity Loads
Calculate sensible and latent heat from persons, lights, electric equipment, machines, evaporation from water surfaces, polluting fluids and miscellaneous loads.
Moisture Transport through Walls and Roofs
Moisture will flow through a building wall or roof if the vapor partial pressure is higher on one of the sides.
Natural Gas - Equipment Consumption
Natural gas consumption for equipment like boiling pans, ovens, cookers, kettles and more.
Optimal Combustion Processes - Fuel vs. Excess Air
Stable and efficient combustion requires correct mixture of fuels and oxygen.
Outdoor Temperatures and Relative Humidity - US Winter and Summer Conditions
Outdoor summer and winter design temperatures and relative humidity for US states and cities.
Ventilation Systems - Acoustic Calculation Procedure
Acoustic noise calculation procedure HVAC systems.
• Air Conditioning
Air Conditioning systems - heating, cooling and dehumidification of indoor air for thermal comfort.
• Heating
Heating systems - capacity and design of boilers, pipelines, heat exchangers, expansion systems and more.
• Noise and Attenuation
Noise is usually defined as unwanted sound - noise, noise generation, silencers and attenuation in HVAC systems.
• Ventilation
Systems for ventilation and air handling - air change rates, ducts and pressure drops, charts and diagrams and more.