Other HD Applications List of Simple HD Desktop Apps

Hands Down Software offers a wide variety of simple HVAC desktop applications including apps for acoustical analysis, climatic data, fresh-air calcs, IP-SI conversions, duct design, and much more. All of these apps display both IP and SI units:



HDAcoustic









HDAcoustic accepts source sound power levels in the standard octave bands and based on geometries and construction of the housing plenum, estimates sound power levels at openings in the plenum or air handling unit, as well as estimating radiated sound power levels.

While standard absorption and TL coefficients are pre-loaded in the program, HDAcoustic is extremely flexible, allowing you to input your own custom coefficients providing acoustical estimates for any plenum or AHU construction.

Multiple sound sources and multiple openings are fully supported by HDAcoustic.



HDConvert



HDConvert provides IP (inch-pound or english) units of measure to SI (standard international) units of measure conversions.

Unit conversions include length, area, volume, pressure, velocity, flow rates, weights, concentrations, energy, power, angles, rotation speed and more.

HDConvert provides the user the ability to Add / Edit / Delete unit of measure conversions, enabling an unlimited conversion capability.



HDElectHeat



HDElectHeat allows you to easily obtain electric heater performance in seconds. HDElectHeat properly corrects for altitude and allows the user to specify heater size and input either leaving air temperature or heating kW. HDElectHeat also checks design for safety parameters such as watt density.

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