Meaning, work of foaming done at original place(at site). The pouring / Injection of twin pack chemicals MDI & Polyol in specified ratio into Pipelines, Storage Tanks, Reactors, Wall Cavities etc. It finds application in process house of Pharmaceutical & Chemical processing units, Beer storage tanks in Breweries, Brine & Chiller water plants, where the temperature of material stored/processed is to be maintained at a temperature ranging from -35 to +10 degrees.
To avoid heat losses in transit from the point of generating certain temperature up to the point of its application/usage, this is the most preferred technique. The thickness of Puf insulation is directly proportional to the difference of outside temperature (T1) & inside temperature (T2); (T1-T2)
The concept of GREEN BUILDING effect is essentially for the conservation of energy, finds application on the top/outer surface of RCC building rooftop where PUF sandwiched panel cannot be installed.
To maintain Ideal/Ambient temperature & relative humidity inside the working arena of office buildings, PUF in chemical state is sprayed over the freshly laid RCC surface. The material in chemical state reaches all the joints & corners of surface effectively sealing them. An Endothermic reaction takes place & the material solidifies to form a joint less & seamless solid layer of rigid PUF of desired thickness varying from 30 to 75 mm.
Since PUF is not UV (Ultraviolet) resistant, the top surface is covered with a solid Polymeric membrane/PCC coating. If not tempered with, this surface has a long lifespan of 10 years & more.
This insulated surface deflects/reflects 80-85% of sun’s heat & absorbs only 15-29% thus lowering the energy bills n cooling the interiors at reasonably low cost.
The same treatment of PUF spray foaming done on the Inner/Lower side of metallic roofing shall achieve the best results to repulse heat transfer from outside to the inner/working area of shed. PUF also can be injected in cavity of outer walls of buildings preferably in East & Southwest direction walls where the sun rays have maximum impact during the day thus lowering the energy bills.
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