Chilled Water Cooling Coil Calculations

Commercial and industrial hvac and refrigeration cooling coil calculations can be made for either chilled water or evaporators dx pumped and gravity flooded with or without dehumidifying on the finside.

Chilled water cooling coil calculations.

Types of cooling coils cooling coils are classified to direct expansion dx coils and chilled water coils as shown in figure 1. Temperature difference online calculator. Water velocity feet per second fps water velocity fps gpm factor number of tubes fed tube diameter factor 5 8 od 1 085 1 2 od 1 704 3 8 od 3 050 as water velocity increases the capacity of a coil increases but so does the water resistance. In a chilled water coil the air is cooled and the water is heated q is positive.

Gallons per hr x 8 33 x t f. At times it is convenient to calculate the heat transferred to the air stream by doing calculations on the water side of the coil. Cooling tower npsh online calculator. The program uses thermodynamically correct psychrometric calculations from cryogenic below 100c to very high above 100c air temperatures.

This gives us a final answer of q 2 500kw of cooling. Calculate temperature differential t f t f incoming water temperature f required chill water temperature. The principal objectives of chilled water pumping system selection and design are to provide the required cooling capacity to each load to promote the efficient use of. The chilled water pump is used to circulate chilled water in a closed system.

Calculate tons of cooling capacity tons btu hr. The above equations for air do not apply to the majority of cooling coils the equations for water apply to both heating and. Coil load flow temperature difference wizard. The chilled water pump circulates return chilled water from the air handling units fan coil units back to the chiller.

Full calculations are shown below. You have the ideal size for your needs. A chilled water system is a cooling system in which chilled water is circulated throughout the building or through cooling coils in an hvac system in order to provide space cooling. Row method will be presented to calculate the deta iled design of the cooling coil in order to enhance the calculation accuracy and trace the air and coil surface temperature locally.

The flow rate of chilled water into the evaporator is measured as 12 649ft3 h and the chilled water inlet temperature is 53 6 f the outlet temperature. Chilled water cooling tower systems. It is a balance between the desired capacity and the resultant 20.