A liquid accumulator for a heat exchange system, includes a liquid accumulator housing provided with an air inlet, an air outlet, and a liquid inlet; and a cooling heat exchanger disposed in the liquid accumulator housing, wherein the cooling heat exchanger comprises an inlet end, a main body part, and an outlet end in sequence; the inlet end of the cooling heat exchanger is connected to the air inlet on the liquid accumulator housing; and the outlet end of the cooling heat exchanger is arranged to be higher than a working liquid level of a refrigerant in the liquid accumulator.

A heating, ventilation, and/or air conditioning (HVAC) system having a return air recycling system that includes a heat exchanger configured to be disposed along a refrigerant circuit of the HVAC system and flow a refrigerant therethrough, an exhaust fan configured to direct return air across the heat exchanger to place the refrigerant in thermal communication with the return air and to exhaust the return air from the HVAC system, and a controller configured to adjust a speed of the exhaust fan, a flow rate of refrigerant through the heat exchanger, or both, based on feedback indicative of a temperature of the return air.

According to an aspect of the present disclosure, a porous plate is provided. The porous plate includes a body having an upper surface, a lower surface opposite the upper surface and sidewalls extending between respective entireties of the upper surface and the lower surface, the body being formed of porous material, and a metallic coating, which is thermally deposited onto an entirety of the sidewalls to form a high-strength mechanical bond with the entirety of the sidewalls.

Disclosed is a CO2 based refrigeration system comprising a condenser for transferring heat from a CO2 refrigerant of the refrigeration system to an air stream. The system further comprises an indirect evaporative cooler arranged to cool an air stream and supply the cooled air to the condenser to facilitate the transfer of heat from the CO2 refrigerant.

An evaporator includes an inlet in a lower manifold, an outlet in an upper manifold, and a multiport tube extending between the lower manifold and the upper manifold. The multiport tube provides a flow path between the lower manifold and the upper manifold. One of the outer side walls of the multiport tube is provided with a first evaporator section with a first heat receiving surface and a second evaporator section with a second heat receiving surface, the first and second evaporator sections passing a heat load received via the respective first and second heat receiving surfaces to a fluid in said multiport tube. The first and second heat receiving surfaces form an angle with each other to align with and contact different surfaces of an object to be cooled.

The cooling systems and methods of the present disclosure involve modular fluid coolers and chillers configured for optimal power and water use based on environmental conditions and client requirements. The fluid coolers include wet media, a first fluid circuit for distributing fluid across wet media, an air to fluid heat exchanger, and an air to refrigerant heat exchanger. The chillers, which are fluidly coupled to the fluid coolers via pipe cages, include a second fluid circuit in fluid communication with the air to fluid heat exchanger and a refrigerant circuit in thermal communication with the second fluid circuit and in fluid communication with the air to refrigerant heat exchanger. Pipe cages are coupled together to allow for expansion of the cooling system when additional cooling capacity is needed. The fluid coolers and chillers are configured to selectively operate in wet or dry free cooling mode, partial free cooling mode, or mechanical cooling mode.

In one aspect, a fan array fault response control system is provided for a cooling tower. The fan array fault response control system includes a fan interface configured to be in communication with a plurality of fans of the cooling tower and a processor operably coupled to the fan interface. The processor is configured to detect at least one non-operational fan of the plurality of fans. The processor configured to effect, in response to detecting the at least one non-operational fan, a reduced fan speed of at least one operational fan of the plurality of fans.

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 present invention provides an evaporative condenser capable of ensuring cooling performance without generating pressure loss, and provides an evaporative condenser comprising: a condensation module; a water injection module for spraying; and a blowing module, wherein the condensation module has stacked N header rows, each comprising: a first header which is disposed at one side thereof and in which a flow path is formed; and a plurality of connecting tubes for connecting the flow paths of the first header and the second header between the first header and the second header, and, here, N is a natural number greater than or equal to 2.

The current invention provides an evaporative condensing system using an evaporative condenser heat exchanger having an outer surface. The heat exchanger has a superhydrophilic surface. A compressor is configured to circulate a working fluid through the heat exchanger. A water distribution system is adapted to deposit a controlled amount of water on the heat exchanger to absorb heat from the heat exchanger by evaporation of water from the heat exchanger. A collector is located below the heat exchanger to receive excess water from the heat exchanger and direct excess water to a drain and an air delivery system is provided to direct air over the heat exchanger. The water distribution system supplies water to the heat exchanger in sufficient quantity that the water wets the heat exchanger, keeps the heat exchanger wet along its length, and excess water remains to carry dissolved solids to the collector.