Importance

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Abstract

Systems and methods for improved heating, ventilation, and air conditioning (HVAC) systems are provided with heat exchanger coils with improved boiling heat transfer. An etching solution may be applied to an inner surface of a heat exchanger coil to etch the heat exchanger coil to increase the surface area and the number of nucleate sites. The heat exchanger coil may be connected to a pump and the etching solution may be introduced and pumped through the heat exchanger coil for a set duration and at a set flow rate. A mass flow meter may be connected between the pump and one end of the heat exchanger coil to measure the flow rate of the etching solution. By adjusting the concentration of acid in the etching solution, the flow rate, and the exposure time, the degree to which the inner surface of the heat exchanger coil is eroded may be adjusted.

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First Claim