A water recirculation system operates in a primary mode for evaporatively cooling air. When the water recirculation mode malfunctions, the controller switches a secondary once-through mode. The system includes a sump for collecting water run-off from the evaporative pads, and a pump in fluid communication with the sump. The pump transfers moisture from the sump to the distribution arrangement located at the top of the evaporative pads during the recirculation mode. An automatically operated make-up water valve delivers water to a distribution arrangement on the evaporative pads. A moisture distribution arrangement distributes moisture to the evaporative pads and an automatically operated sump drain valve retains water in the sump when closed and freely drains water from the sump when open. A water level control communicates the sump water level to a control system. A monitoring mechanism detects whether the water-recirculation system has malfunctioned or is operating correctly.

A counter-flow simultaneous heat and mass exchange device is operated by directing flows of two fluids into a heat and mass exchange device at initial mass flow rates where ideal changes in total enthalpy rates of the two fluids are unequal. At least one of the following state variables in the fluids is measured: temperature, pressure and concentration, which together define the thermodynamic state of the two fluid streams at the points of entry to and exit from the device. The flow rates of the fluids at the points of entry and/or exit to/from the device are measured; and the mass flow rate of at least one of the two fluids is changed such that the ideal change in total enthalpy rates of the two fluids through the device are brought closer to being equal.

Provided is a gas processing facility capable of enhancing the performance of an air-cooled heat exchanger while suppressing the influence on apparatus from spraying of demineralized water to the air-cooled heat exchanger to be used in a processing of natural gas. An air-cooled heat exchanger arranged in the gas processing facility for performing a liquefaction process of natural gas and the like is configured to supply cooling air to a tube through which a fluid to be cooled is caused to flow, to thereby cool the fluid to be cooled, and a mist supply section is configured to supply mist obtained by spraying demineralized water, to thereby cool the cooling air. Further, the mist supply section is configured to spray the demineralized water from a lateral position on an upstream side of an intake.

A device and a method for separating a vapor component from a gas is disclosed. A vessel comprising a top portion and a bottom portion is provided. The top portion comprises a gas outlet, a fluid inlet, and a direct-contact heat exchanger. The bottom portion comprises an indirect-contact heat exchanger, a gas inlet manifold, and a fluid outlet manifold. The indirect-contact heat exchanger is aligned vertically and comprises parallel exchange surfaces. Plenums between the exchange surfaces comprise alternating, adjacent ascending gas channels and descending fluid channels. The gas inlet manifold comprises one or more inlets adjacent to a top portion of each of the ascending gas channels. The fluid outlet manifold comprises one or more outlets adjacent to a bottom portion of each of the descending fluid channels.

A once-through dry adiabatic cooler having a water distribution system, a waste water sensor, and a controller, where the amount of waste water, if any, is detected, and the amount of water distributed to an air flow path adjacent to the coils of said cooler is adjusted so that the amount of water detected is as close to zero as possible, or, in the case of the use of adiabatic pads that require flushing, only the amount of water necessary to flush salt and other minerals from said pads.

A water recirculation system operates in a primary mode for evaporatively cooling air. When the water recirculation mode malfunctions, the controller switches a secondary once-through mode. The system includes a sump for collecting water run-off from the evaporative pads, and a pump in fluid communication with the sump. The pump transfers moisture from the sump to the distribution arrangement located at the top of the evaporative pads during the recirculation mode. An automatically operated make-up water valve delivers water to a distribution arrangement on the evaporative pads. A moisture distribution arrangement distributes moisture to the evaporative pads and an automatically operated sump drain valve retains water in the sump when closed and freely drains water from the sump when open. A water level control communicates the sump water level to a control system. A monitoring mechanism detects whether the water-recirculation system has malfunctioned or is operating correctly.

The invention is a hybrid condenser having a direct contact condenser segment (9) and a surface condenser segment (10) arranged in a common condensation space. The hybrid condenser includes a surface condenser segment (10) arranged downstream the direct contact condenser segment (9) in the direction of steam flow or below the direct contact condenser segment (9), and a water guiding element (17) ensuring that the cooling water and condensate mixture generated in the direct contact condenser segment (9) flows downward avoiding the surface condenser segment (10).

The invention is a hybrid condenser having a direct contact condenser segment (9) and a surface condenser segment (10) arranged in a common condensation space. The hybrid condenser includes a surface condenser segment (10) arranged downstream the direct contact condenser segment (9) in the direction of steam flow or below the direct contact condenser segment (9), and a water guiding element (17) ensuring that the cooling water and condensate mixture generated in the direct contact condenser segment (9) flows downward avoiding the surface condenser segment (10).

The present invention relates to a vector cancelling condenser device. The device comprises a body (102) and at least one pair of delivery tubes (108a, 108b). The body (102) is defined by at least one wall (104) and an enclosed space (106). The pair of delivery tubes (108a, 108b) are having a pair of gas outlets (110a, 110b) in the body (102). The pair of gas outlets (110a, 110b) are facing each other and configured to cancel the velocity of gas coming out from the gas outlets (110a, 110b) to forms saturated vapor of the gas and condensed liquid formed by releasing latent heat of condensation from the saturated vapors.

A counter-flow simultaneous heat and mass exchange device is operated by directing flows of two fluids into a heat and mass exchange device at initial mass flow rates where ideal changes in total enthalpy rates of the two fluids are unequal. At least one of the following state variables in the fluids is measured: temperature, pressure and concentration, which together define the thermodynamic state of the two fluid streams at the points of entry to and exit from the device. The flow rates of the fluids at the points of entry and/or exit to/from the device are measured; and the mass flow rate of at least one of the two fluids is changed such that the ideal change in total enthalpy rates of the two fluids through the device are brought closer to being equal.