Liquid cooling system with water quality monitoring

A liquid cooling system with water quality monitoring comprising:

• a first inlet providing a first working liquid;
• a first outlet;
• a second inlet providing a second working liquid;
• a second outlet;
• a heat exchange unit having:
• a heat exchanger connected to the first inlet, the first outlet, the second inlet, and the second outlet such that the first inlet and outlet are fluidly isolated from the second inlet and outlet and such that the first and second working fluids both facilitate heat exchange in the heat exchanger, but do not mix with each other;
• a first pump connected to the first outlet and the heat exchanger, wherein the first pump drives the first working liquid after heat exchange in the heat exchanger;
• a liquid tank containing the first working liquid and disposed between and connected to the heat exchanger and to the first pump through a plurality of first pipes;
• and
• a second pump connected in parallel or in series with the first pump and configured to, in combination with the first pump, continuously drive the first working liquid;
• a sensing unit provided with at least one pH sensor disposed in the liquid tank through which the first working liquid flows, wherein the pH sensor senses a pH value of the first working liquid and generates a sense signal corresponding to the pH value of the first working fluid and at least one temperature sensor arranged on the first pipe and generating a temperature signal corresponding to a temperature of the first working fluid discharged through the first outlet;
• and
• a control unit connected to the sensing unit, the first pump, and the second pump, wherein the control unit compares the sense signal with a preset pH range to generate a compared result that is sent to an external interface and wherein the external interface sends a stop signal to the control unit which stops operation of the first pump when the compared result is an idle state.