00-07: Demonstrating the Effectiveness of Field Testing Evaporative VaporDetermining the thermal capacity of evaporative condensers has long been left to theory, "rules of thumb," or the guarded operations of manufacturers' test laboratories. Now, modern instrumentation and test methods make field testing of evaporative condensers practical, accurate, and readily available to owners, engineers, and manufacturers alike. Field testing gives owners the ability to confirm manufacturers' performance guarantees on new equipment