Calculate tons of cooling capacity Tons BTU/hr. Gallons per hr x 8.33 x T☏. General sizing formula: Calculate Temperature Differential (T☏) T☏ Incoming Water Temperature (☏) Required Chill Water Temperature.
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For example, 1 Ton of cooling is 12,000 BTU/hour s # Tons = (BTU/hr) / (12,000)This is the size unit you should need. Now that you have the BTUs, compute the total tons of cooling you need from a chiller. Now that you have these two figures, calculate how many BTU’s (British Thermal Units) your equipment puts off.BTU/ hour = 500 x GPM x Temperature Difference (delta T)Repeat this for all the equipment you have, and add up the total BTUs. If one is not available, simply measure the time it takes for the outlet flow to fill a five gallon bucket, and then compute your gallons per minute (GPM) of flow (see calculator below). To measure the flow rate of the water place a flow meter on the outlet line of your equipment.
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