Paint Calculator/Heat Flux Calculator

How you'll Save on Energy Costs

Insuladd® paint additives and Insuladd® pre-mixed house paints have been introduced to the general public due to research done through the NASA technology exchange program. The INSULADD® technology is similar to that which is very successfully used to dissipate heat from the Space Shuttle and other space vehicles upon atmospheric re-entry. INSULADD® works by blocking heat transfer (heat flow) through the surface that has been painted. This equates to less heat escaping your home in the winter and less heat radiating inward in the summer.

Calculate Your Savings! How Much Paint You'll Need (Paint Calculator) Room measurements: Wall height: ft Room width ft Room length Number of doors Number of windows Number of coats: 1 coat 2 coats Include ceiling: Square footage This calculator adds a buffer of 25 square feet to the figure above to compensate for spillage and roller waste. Results: Approximate gallons of paint (no primer)* Approximate gallons of paint (with primer)* The two values above may or may not be the same.   * The measurement offered here is an estimation. Tech Traders offers no guarantee that paint, or paint additives supplied will cover the area estimated above. Different surfaces absorb paint at different rates and will require more or less paint than indicated. Having said all that, this estimate is based on one gallon covering 350 feet of surface area that has had no primer applied, and one gallon of paint covering 400 feet of surface area that has had primer applied. This is the typical coverage area for latex paint on a surface such as drywall.

Heat Flux Calculator The heat flux calculator is a useful tool for architects and engineers. It is considered an advanced tool and may only be useful for individuals with the necessary background Heat Flux Calculator Self Extracting Zip File Heat Flux Calculator FAQ's Q. Is there an instruction sheet that will help me understand the way you can plug in numbers into the different areas? A. Yes, included in the exe is a readme.txt with instructions. Q. Is it daily an average incident radiant intensity? A. Yes. It is recommended you to use the daily average value from the meteorological station. Your local meteorological stations will be able to provide you with the average incident radiant intensity that you require for you climate conditions. Q. Is it an angle factor/Sun temp/or combination % figured out? A. For this claculator, it explicitly assumes that the incident radiation is striking perpendicular to the walls of a building. Trying to incorporate the angle of the sun or even sol-air effect is achievable but will be quite tedious. Usually, using the average incident radiation provided by the meteorological station would be good enough since the average values have taken into account the different angles. Q. Convection to coefficient of heat transfer? A. Convection heat transfer coefficient is the "thermal conductivity" of FLUIDS. It is similar to the thermal conductivity solid matter except that the unit is slightly different. Thermal Conductivity W/m K (Watt per metre square per kelvin) Convention heat transfer coefficient W/m^2 K (watt per metre square per kelvin) note: Kelvin is the SI unit for measuring temperature. Q. Do I need to know the wind speed? A. To determine a more accurate value for this parameter, there are many available formulas which are lengthy that we can use and wind speed is one factor. Even whether the wall is vertical, inclined, horizontal,rough or soomth, it will affect the values that you will be getting on for this convection coefficient. In this calculator, it has been simplified, ie., you just need to key in anapproximated value. The insructions some some values listed out. Q. Radiation to emissivty of a black body? A. Radiation heat transfer coefficient is also similiar to convection heat transfer coefficient, except that it is use to account for the radiation component during heat transfer. It is actually not a good practice to use radiation heat transfer coefficient. But for simplification, it is ok. However, to get more accurate answers from radiation, the more recommended method of calculation is to use radiosity. Radiation is just a name that people use to describe heat transfer by electromagnetic waves (sun light). Emissivity of a black body: is a coefficient (range from 0-1) of how much electromagnetic wave is being emitted by the black body. For pure black matter, the value is 1, which means that, it will give out whatever amount of incident radiation absorbed by it, it will give out all (100%) back out to the environment. For Grey matter, the value is only 0.5. As for other matter, this will depend on the colour and property of the matter itself. Q.What is the thermal conductivity of Insuladd? A. For Insuladd E-Coat, value taken from the product technical data states that its thermal conductivity is 0.017. If you want to use it for additive, then the value will always differ because of the paint that the additive is mixed into have different properties. Q. Is there an industry average for common conductivity of walls & roof. A. Unfotunately, the answer is no. There are only thermal conductivity for some commonly found materials eg steel, concrete etc. However, if you happen to have one of these handbooks, you can find a large list of it and is more suitable for your cause because all the material are the building material commonly found in USA). They are: 1) ASHRAE handbook of fundamentals 2) Heating, Ventilating, And Air Conditioning Analysis & Design Q. Is there an industry average for absorptivity of Insuladd? A. Through independent testing, Insuladdwas found to have a value of 0.19.