An evaporative cooler which includes a sealed loop of conduit with a first portion in a space to be cooled and a second portion in a space where heat is rejected, a volume of working fluid, and a fan inside the conduit loop. The fan forces air over the working fluid to accelerate its evaporation, which requires heat. Evaporation creates vapor-enriched air which carries heat and is forced by the fan to the second portion. Within the second portion, the vapor-enriched air rejects the absorbed heat before being forced back to the first portion. In certain cases, a portion of the working fluid in the vapor-enriched air condenses out and drains or is pumped back to the first portion. In certain uses, the cooler provides cooling to an area. In other uses, the cooler captures vaporized water, producing an impurity-free condensate for removal or use.

An air blowing from an outdoor unit passes through a vaporization filter installed to face an air outlet of an outdoor unit. The working water W is dropped from a water supply pipe above the vaporization filter, and the working water W flowing down from a filter constituent plate is collected in a water storage tank. The working water W is supplied to the water supply pipe by using a water supply pump. The working water W is circulated between the water storage tank, the water supply pipe, and the vaporization filter. The air blowing discharged from the outdoor unit and passed through the vaporization filter is deprived of the heat of vaporization, and the temperature of the air blowing from the outdoor unit exhaust cooling device is lowered.

An automated flush system for an evaporative cooling system may be employed in barns or other facilities that house animals to provide cooling and to reduce production loss. The evaporative cooling control system may include an automated flush system that has a controllable valve at a flush end of the cooling system. Based on a timer, the controllable valve is opened and water drains (e.g., pumped or gravity feed) out of the cooling pad enclosure. Fresh water is introduced at the “fill” end of the system, rinsing out the evaporative cooling pads. After a predetermined time, the valve at the flush end of the system is closed, and the fresh water refills the cooling pad enclosure.

An evaporative cooler includes a first heat exchanger, a first coolant storage, a second coolant storage, and a first airflow drive. The first heat exchanger is capable of cooling a coolant flowing through the first heat exchanger, and cooling an air flowing through the first heat exchanger by way of the cooled coolant. The first coolant storage forms a first coolant circulating path with the first heat exchanger and provides the coolant to the first heat exchanger. The second coolant storage forms a second coolant circulating path with the first coolant storage and is capable of supplementing the first coolant storage with the coolant. The capacity of the second coolant storage is larger than that of the first coolant storage. The first airflow drive cooperates with the first heat exchanger to direct and eject the air flowing through the first heat exchanger.

A pig production method by using a detachable and washable wet curtain for intensive pig farming The detachable and washable wet curtain includes a wet curtain mounting frame (1), a spray tube (4), a plurality of rotatable reels (7) equivalent to sleeves, a reel (6) with a buckle, a wet curtain net (8), a reel (10) with a buckle, and a manual handle (9). The wet curtain is formed by a low-cost common material, namely a plastic net and the like, is convenient to mount, detach, and wash, and is not prone to making dust, scale, algae, mosquitos, and the like accumulate thereon, thus reducing the replacement cost and use cost. Therefore, a new cooling method based on the wet curtain is provided for pig farms in summer, and it is also suitable for other livestock farms in summer.

A cryogenic energy system for cooling and powering an indoor environment includes a cryogenic open loop comprising a cryogen source to supply a cryogen and at least one transfer-expansion stage in fluid connection with the cryogen source, each transfer-expansion stage comprising at least one heat exchanger for heat transfer therein from a hot fluid to the cryogen and a power unit for expansion therein of the cryogen that has been heated in the at least one heat exchanger to generate electricity, the at least one heat exchanger including an evaporator; and a heat supply open loop configured to provide the hot fluid for heat exchange with the cryogen in the at least one heat exchanger; the cryogenic energy system configured to perform heat removal from a first heat transfer loop of a conventional cooling system, the first heat transfer loop transferring heat obtained from air in the indoor environment.

Systems and methods for evaporatively cooling air using a medialess cooling system. In one embodiment, a medialess evaporative cooling system comprises an enclosure, an air inlet that enables air to flow from an exterior of the enclosure to an interior of the enclosure, an air outlet that enables air to flow from the interior of the enclosure to the exterior of the enclosure, and an atomizer positioned within the enclosure, wherein the atomizer receives water from a water source and generates a mist of the water within the enclosure, and wherein air from the air inlet is passed through the enclosure and thereby cooled by evaporation of the mist, and the cooled air is provided at the air outlet.

A cooling system includes a cooling device having a first cooling coil and a second cooling coil, a first heat transfer fluid in fluid communication with the first cooling coil, a second heat transfer fluid in fluid communication with the second cooling coil, a first heat exchanger in fluid communication with the first heat transfer fluid and the second heat transfer fluid, a second heat exchanger in fluid communication with the second heat transfer fluid and a source of external air, a system of fluid control devices in fluid communication with the second heat transfer fluid and configured to minimize a change in a total pressure drop of the second heat transfer fluid when the cooling system switches between operating modes, and a controller configured to selectively control the cooling device and the system of fluid control devices to operate the cooling system in each of the operating modes.

Disclosed is a system for conditioning air, the system comprising: a heat exchanger comprising a plurality of heat transfer tubes extending between an accumulation header and an outlet header, an internal volume, and an external surface, wherein an air mover is disposed in fluid communication with an air mover in fluid communication with an air inlet and an air outlet, wherein the air mover is configured to urge a flow of air to be conditioned across the external surface of the heat exchanger, a reactor comprising an adsorbent material, a reactor inlet in fluid communication with the outlet header, and a reactor outlet, a vacuum pump comprising a vacuum pump inlet in fluid communication with the reactor outlet and a vacuum pump outlet in fluid communication with a system exhaust.

A cooling system includes an ingress port to receive refrigerant in a vapor form from an evaporator, an egress port to return refrigerant in a liquid form back to the evaporator, a condenser coupled to the ingress port and the egress port, and a compressor coupled to the ingress port and the condenser. When the cooling system operates in a first mode, the condenser is configured to receive and condense the refrigerant from the vapor form into the liquid form and to return the refrigerant in the liquid form to the regress port. When the cooling system operates in a second mode, the compressor is configured to compress the refrigerant in the vapor form and to supply the compressed refrigerant to the condenser to be condensed therein.