EVAPORATIVE HEAT TRANSFER SYSTEM AND METHOD
First Claim
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1. A method of regulating a heat transfer fluid of an evaporative heat transfer system having a sump which contains the heat transfer fluid;
- the method comprising the steps of;
providing a first fluid input system in fluid communication with a first injection point of the evaporative heat transfer system, the first fluid input system providing a first heat transfer fluid to the evaporative heat transfer system, the first heat transfer fluid having a first conductivity;
providing a second fluid input system in fluid communication with a second injection point of the evaporative heat transfer system, the second fluid input system providing a second heat transfer fluid to the evaporative heat transfer system, the second heat transfer fluid having a second conductivity, the second conductivity being lower than the first conductivity;
controlling the first fluid input system to add the first heat transfer fluid to the evaporative heat transfer system at the first injection point based on a height of the heat transfer fluid in the sump; and
controlling the second fluid input system to add the second heat transfer fluid to the evaporative heat transfer system at the second injection point based on a conductivity of the heat transfer fluid.
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Abstract
An evaporative heat transfer system is disclosed wherein a portion of a heat transfer fluid is evaporated and a remainder of the heat transfer fluid is collected in a sump. A characteristic of the heat transfer fluid is monitored. A first fluid input system and a second fluid input system are provided. The first fluid input system provides a first heat transfer fluid to the evaporative heat transfer system. The second fluid input system provides a second heat transfer fluid to the evaporative heat transfer system.
105 Citations
47 Claims
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1. A method of regulating a heat transfer fluid of an evaporative heat transfer system having a sump which contains the heat transfer fluid;
- the method comprising the steps of;
providing a first fluid input system in fluid communication with a first injection point of the evaporative heat transfer system, the first fluid input system providing a first heat transfer fluid to the evaporative heat transfer system, the first heat transfer fluid having a first conductivity; providing a second fluid input system in fluid communication with a second injection point of the evaporative heat transfer system, the second fluid input system providing a second heat transfer fluid to the evaporative heat transfer system, the second heat transfer fluid having a second conductivity, the second conductivity being lower than the first conductivity; controlling the first fluid input system to add the first heat transfer fluid to the evaporative heat transfer system at the first injection point based on a height of the heat transfer fluid in the sump; and controlling the second fluid input system to add the second heat transfer fluid to the evaporative heat transfer system at the second injection point based on a conductivity of the heat transfer fluid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
- the method comprising the steps of;
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24. A method of regulating a heat transfer fluid of an evaporative heat transfer system having a sump which contains the heat transfer fluid;
- the method comprising the steps of;
providing a first fluid input system, the first fluid input system being in fluid communication with a first injection point of the evaporative heat transfer system, the first fluid input system providing a first heat transfer fluid to the evaporative heat transfer system, the first heat transfer fluid having a first conductivity; providing a second fluid input system, the second fluid input system being independent of the first fluid input system and not in fluid communication with the first fluid input system, the second fluid input system being in fluid communication with a second injection point of the evaporative heat transfer system, the second fluid input system providing a second heat transfer fluid to the evaporative heat transfer system, the second heat transfer fluid having a second conductivity, the second conductivity being lower than the first conductivity; circulating the heat transfer fluid to a first heat transfer system which adds heat to the heat transfer fluid and onto a second heat transfer system which removes heat from the heat transfer fluid through an evaporation of a portion of the heat transfer fluid; monitoring a characteristic of the heat transfer fluid; adding the first heat transfer fluid to the heat transfer fluid if a first value of the characteristic of the heat transfer fluid is reached; and adding the second heat transfer fluid to the heat transfer fluid when a second value of the characteristic of the heat transfer fluid is reached, the first value of the characteristic of the heat transfer fluid and the second value of the characteristic of the heat transfer fluid being selected such that the heat transfer fluid reaches the second value of the characteristic of the heat transfer fluid prior to the first value of the characteristic of the heat transfer fluid. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
- the method comprising the steps of;
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40. An apparatus for regulating a heat transfer fluid of an evaporative heat transfer system having a sump containing the heat transfer fluid and a fluid circuit which circulates the heat transfer fluid to a first heat transfer system which adds heat to the heat transfer fluid, the evaporative heat transfer system removing heat from the heat transfer fluid through an evaporation of a portion of the heat transfer fluid, the evaporative heat transfer system including a first valve which adds a first heat transfer fluid to the heat transfer fluid when a fluid level of the heat transfer fluid in the sump falls below a first height setpoint;
- the apparatus comprising;
a fluid treatment device which receives fluid from a fluid supply, the fluid being independent of the evaporative heat transfer fluid, the fluid treatment device treating the received fluid to produce a second heat transfer fluid having a second conductivity lower than a first conductivity of the first heat transfer fluid; a second valve having a first configuration wherein the second heat transfer fluid is not added to the heat transfer fluid and a second configuration wherein the second heat transfer fluid is added to the heat transfer fluid of the heat transfer system; a sensor which monitors a conductivity of the heat transfer fluid; and a controller which is operatively coupled to the second valve, the controller configuring the second valve in the second configuration when the conductivity of the heat transfer fluid rises to a first setpoint level, the second conductivity of the second heat transfer fluid being lower than the first setpoint level, and configuring the second valve in the first configuration when the conductivity of the heat transfer fluid falls to a second setpoint level, the second conductivity of the second heat transfer fluid being lower than the second setpoint level. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47)
- the apparatus comprising;
Specification