Rapid HVAC Duct Sizing Free

使用等于摩擦法和最大速度大小空调管道

Throw away your ductulator and get into the 21st century! Rapid HVAC (Heating, Ventilation and Air Conditioning) Duct Sizing takes the trouble out of air conditioning duct and ventilation duct sizing. It is a quick, simple, easy to use tool allowing you to whip out your phone and give an immediate answer, just like a ductulator. You don't need to be an engineer to use it - Rapid HVAC Duct Sizing comes with industry default values preloaded so all you need to do is plug in the airflow and spin the wheel to set one HVAC ductwork dimension. Easy.

It is customisable, with both SI (metric) and imperial units supported plus the target velocity and pressure drop are able to be configured. Just like a ductulator, Rapid HVAC Duct Sizing supports sizing of oval duct and circular duct as well as the standard rectangular duct most often used in HVAC services. Oval duct and circular duct have a flexible duct option which uses a higher roughness coefficient, to allow flexible duct sizing using the tool as well. It works for air conditioning duct as well as ventilation duct.

For its engineering calculations, Rapid HVAC Duct Sizing uses a hybrid of the equal friction method and constant velocity methods, selecting for an equal friction with a set maximum velocity to avoid acoustic issues. It calculates the friction factor based on the preferred methods of Trane, Carrier and ASHRAE - by iteratively solving the Colebrook equation for the friction factor based on airflow (with a different roughness coefficient for flexible duct if selected). Rapid HVAC Duct Sizing then applies this friction factor to determine the pressure drop. Through the use of hydraulic diameter, it works as an oval duct and circular duct as well as rectangular duct sizer. Rapid HVAC Duct Sizing can also compute the maximum airflow which can pass through a specified duct size, in rectangular duct, oval duct, circular duct or flexible duct. It works as a duct sizer to determine ventilation duct size and air conditioning duct size.

Despite the robust engineering calculations being performed, this ductulator is suitable for use by anyone. Mechanical HVAC services consulting engineers use it to save time as a duct sizer in accordance with ASHRAE guides for air conditioning and ventilation duct sizing. It is great for air conditioning installers as a tool for checking the HVAC ductwork sizing. HVAC services mechanical contractors can make changes to duct size on site without needing to call in a consulting engineer. Builders can use it to scrutinise their HVAC services' air conditioning duct and ventilation duct sizes, making sure they aren't taking up more space than required. Building owners can use this duct sizer to check on the construction work being performed to make sure their air conditioning and ventilation systems will work properly.

Feature Overview:

• HVAC ductwork sizing using the equal friction (pressure drop) method and a maximum velocity using engineering calculations per Carrier, Trane and ASHRAE

• HVAC ductwork sizing using rectangular duct, oval duct or circular duct to suit construction requirements

• 3 HVAC ductwork sizing criteria (pressure drop and velocity requirements) included, plus one can be modified to suit the engineering requirements of your project

• For oval duct and circular HVAC ductwork sizing, a fourth engineering criteria for flexible duct is available, which also changes the roughness factor

• Specify HVAC duct size (rectangular duct for free, circular duct and oval ductwork as pro features) and you can see the maximum airflow which can be put through

• Metric (SI) and Imperial units are both included

• Suitable for both ventilation duct and air conditioning duct

• Quick and simple to use - enter the airflow with the keypad then spin the wheel to set the dimensions or diameter. Change between pressure drop and velocity criteria with the press of a button.

• Pocket sized replacement for your HVAC services ductulator!