Variable flow primary pumping systems utilize a variable capacity cooling system and a variable flow water pumping system to modulate cooling and water flow to meet chilled water needs and save operating energy costs. Cooling capacity is modulated with variable capacity compressors based on the desired leaving water temperature. Water flow is modulated with VFD … Read more
SHF,RSHF & GSHF are elements used in heat load calculation & which affects the psychrometric properties of the air. SHF – Sensible Heat Factor The thermal properties of air can be separated in to latent & sensible heat. The term sensible heat factor is the ratio of the sensible heat to total heat, where the … Read more
Bypass factor is the function of the physical & operating characteristic of the conditioning apparatus. It represents that portion of the air which is considered to pass through the conditioning apparatus completely unaltered. The physical & operating characteristic affecting the bypass factor are as follows: A decreasing amount of available heat transfer surface (i.e. less … Read more
Apparatus dew point is the effective coil surface temperature when there is dehumidification. This is the temperature to which all the supply air would be cooled if 100% of the supply air contacted the coil. When the air is to be cooled & dehumidified from t1 to t2 condition, the cooling coil has to be … Read more
If you have worked in chiller industry, you might have come across this terminology. In this article we will discuss the significance of Chiller surge & how to avoid it. General refrigeration circuit & flow First take a look how refrigerant moves along the component of refrigeration circuit. In normal operation low pressure refrigerant vapors … Read more
Rooftop Packaged air conditioners are designed and manufactured to meet the all-in-one solutions for large halls, warehouses, supermarkets, shopping centers, stations & airports etc. Optimal temperature & humidity, air purification & proper ventilation are essential factors to ensure occupancy of these areas for both users & operators, regardless of external conditions. Fresh air is even … Read more
What is Fouling in Heat exchangers? Accumulation of undesirable materials(deposits) on Heat exchanger surfaces. Undesirable materials may be crystals, polymers, inorganic salts, biological growth, corrosion products etc. This Phenomena of rust formation & deposition of fluid impurities is called fouling. Depends significantly on the operating conditions. Effects Of Fouling Affects Heat Transfer & Flow. The … Read more