초록 ▼

An algorithm calculates, in real time, the overall heat transfer coefficient for an air-cooled chiller system and compares this value to a reference value corresponding to a new machine operating with a clean condenser. Based on this comparison, an indication is displayed to inform a user of the deg

An algorithm calculates, in real time, the overall heat transfer coefficient for an air-cooled chiller system and compares this value to a reference value corresponding to a new machine operating with a clean condenser. Based on this comparison, an indication is displayed to inform a user of the degree of degradation in condenser performance.

대표청구항 ▼

[ We claim:] [1.]1. A method for determining an operating condition of a condenser coil of a refrigeration system, comprising the steps of:a) checking to see if said system is in a steady operating state;b) determining a saturated condensing temperature of said system;c) determining a saturated suct

[ We claim:] [1.]1. A method for determining an operating condition of a condenser coil of a refrigeration system, comprising the steps of:a) checking to see if said system is in a steady operating state;b) determining a saturated condensing temperature of said system;c) determining a saturated suction temperature of said system;d) determining an ambient air temperature of said system;e) calculating a total heat rejected in a condenser of said system from values obtained in steps (b), (c), and (d);f) calculating a heat transfer coefficient from values obtained in steps (b), (d), and (e);g) comparing said calculated heat transfer coefficient to an ideal heat transfer coefficient to obtain a value representing said operating condition of said condenser coil; andh) outputting a message to a user of said system based on said value obtained in step (g).