Labels:text | screenshot OCR: BURGER Crossflow vs. Counterflow The shortcomings of the X F configuration are: 1. For equivalent cooling of 50,000 GPM , for example, the pump head is 42 feet compared to 20 for the C F . The extra 22 feet pump head WARM over a 20 year life span would cost about MOIST AIR $ 1,500,000 at $ 0.10 per KwH. WIND DIRECTION BHP = GPM x Pump head Constant 3960 x Pump efficiency x S.G. BHP = 50,000 x 22 3960 x.80× 1.0 BHP = 347 extra HP penalty for X F tower 2. Recirculation which can rob tower of upwards FRESH AIR FRESH AIR of 1 degree F. 3. When built with the most efficient fill, other than increasing motor HP and fan diameter, the RECIRCULATION EFFECT capacity cannot be increased . 4. More cells and a higher profile tower must be constructed to equal the performance of the CF. 5. Limited icing ...
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