The present disclosure provides materials and methods related to passive cooling systems. In particular, the present disclosure provides a condensorator heat exchanger with a single microchannel coil that integrates the evaporator and condenser into one assembly. The passive heat exchanger systems of the present disclosure provide enhanced cooling capacity and airflow in environments ranging from outdoor electronic enclosures to commercial and residential buildings.

A condenser and a turbochiller including a condenser are provided. The turbochiller may include a compressor including an impeller that compresses refrigerant and a motor that drives the impeller; a condenser for heat exchange between the refrigerant introduced from the compressor and cooling water; an evaporator for heat exchange between the refrigerant discharged from the condenser and cold water; an expansion valve provided between the condenser and the evaporator; and a collector configured to collect noncondensable gas inside of the condenser. Accordingly, it is possible to efficiently collect noncondensable gas inside of a condenser of a turbochiller.

A heat transfer system (e.g., a heat pump) can include at least a first fin array and at least a first pump disposed in fluid communication with the first fin array and configured to cause a first fluid to flow through the first fin array. The system can include at least a first heat transfer layer attached to and/or in thermal communication with the first fin array. The first heat transfer layer can define a second fluid flow path therein for a second fluid to flow fluidly isolated from the first fluid. The first heat transfer layer and the first fin array can be configured to cause heat transfer between the first fluid and the second fluid.

A heat releasing unit includes heat releasing constituents which are stacked and are joined together while heat releasing flow passages are formed in the heat releasing constituents, respectively. An evaporating unit includes evaporating constituents which are stacked and are joined together, while evaporating flow passages are formed in the evaporating constituents, respectively. The evaporating unit and the heat releasing unit are arranged one after another in a direction along a side plate portion. A heat releasing unit outlet is formed at an outlet-side heat releasing constituent that is one of the heat releasing constituents placed at an end thereof. An evaporating unit inlet is formed at an inlet-side evaporating constituent that is one of the evaporating constituents placed at an end thereof. All of the heat releasing flow passages are connected to the evaporating flow passages through the heat releasing unit outlet and the evaporating unit inlet.

A refrigerator includes a cabinet configured to define a low-temperature storage space and a machine room, in which a compressor is disposed; and a condenser disposed in the machine room. The condenser includes a header comprising a first header and a second header, which are spaced apart from each other, a plurality of tubes configured to connect the first header to the second header, and a heat exchange fin disposed between the tubes spaced apart from each other. The header includes a baffle configured to partition an inner space of the header so as to guide a flow direction of a refrigerant, each of the tubes includes a passage in which a hollow is defined so that the refrigerant flows, and the passage has a volume that gradually decreases along a flow path of the refrigerant.

A heating, ventilation, air conditioning, and/or refrigeration (HVAC&R) system includes a first condenser configured to place a first refrigerant in a heat exchange relationship with a cooling fluid, a second condenser configured to place a second refrigerant in a heat exchange relationship with the cooling fluid, and a conduit system configured to direct a first portion of the cooling fluid from a cooling fluid supply to the first condenser and then through a first section of the second condenser in a series configuration. Further, the conduit system is configured to direct a second portion of the cooling fluid directly from the cooling fluid supply to a second section of the second condenser, such that the first portion of the cooling fluid and the second portion of the cooling fluid flow through the first condenser and the second condenser in a parallel configuration.

A refrigerator includes a cabinet that defines a storage space and a machine compartment that accommodates a compressor, a blow fan, and a condenser. The condenser is curved along front, rear, and side surfaces of the machine compartment. The condenser includes a first header disposed at a first end of the condenser, a second header disposed at a second end of the condenser, tubes that connect the first header and the second header to each other, heat exchange fins disposed the tubes, an input connection portion that extends from the first header toward the second header and is configured to supply refrigerant to the first header, and an output connection portion that extends from the first header toward the second header and is spaced apart from the input connection portion. The output connection portion is configured to receive the refrigerant discharged from the first header.

The application relates to a high-efficiency phase-change condenser for a supercomputer, including a condenser box body, a refrigerant input pipe, a refrigerant output pipe and a condensing coil; a liquid refrigerant accommodated in the condenser box body, and a gas-phase region existing between a liquid level of the liquid refrigerant and a top of the condenser box body; one portion of the condensing coil immersed into the liquid refrigerant, and the other portion of the condensing coil located in the gas-phase region above the liquid level of the liquid refrigerant; and in the gas-phase region, refrigerant vapor bubbles are liquified by the condensing coil. Liquid-phase and gas-phase saturated refrigerants can be completely condensed by the condensing coil in a limited condenser space, thereby improving heat exchange efficiency of the condenser.

The present disclosure relates to a chiller system comprising: a refrigeration circuit comprising, in flow order, a compressor, a main condenser, an expansion valve and an evaporator; an auxiliary cooling branch configured to receive an auxiliary refrigerant flow from the refrigerant circuit downstream of the compressor, the auxiliary cooling branch bypassing the main condenser, expansion valve and evaporator, the auxiliary branch comprising an auxiliary condenser configured to discharge refrigerant to a cooling line for cooling one or more components of the chiller system; wherein the cooling line is configured to return the portion of refrigerant flow to the refrigeration circuit at or upstream of the compressor; wherein the main condenser and auxiliary condenser are co-located for heat exchange with a common flow of an external heat exchange medium.

An adiabatic cooling system includes a condenser coil, a plurality of adiabatic pads, a plurality of frames, and a pad pivoting system. Each frame is configured to hold a respective one of the plurality of adiabatic pads and to pivot about a respective one of a plurality of pivot points. The pad pivoting system is configured to rotate each one of the plurality of frames about the respective pivot point of the frame from an open position to a closed position, and to rotate each one of the plurality of frames about the respective pivot point of the frame from the closed position to the open position. When the plurality of frames are in the open position, intake air for the adiabatic cooling system is unimpeded by the plurality of adiabatic pads as the intake air enters the adiabatic cooling system and contacts the condenser coil.