Standalone and self-contained cooling systems using compressed liquid and/or gas C0.sub.2 containers positioned in an insulated or non-insulated vessel and consisting of a specially designed unit where the containers are vertically positioned in an upright or upside-down position. The liquid and/or gas CO2 coolant is then released into capillary tube(s) embedded into a heat transfer plate or heat exchanger thus leveraging the C0.sub.2 coolant properties. The temperature is controlled by a metering C0.sub.2 releasing system encompassing an electronic control device which can be operated remotely and/or via a touch screen and which sends alerts when pre-defined thresholds are exceeded. The invention's metering C0.sub.2 releasing system may be triggered by an electronic or a thermostatic valve or may be triggered manually or by an electronic solenoid. The invention's cooling system also encompasses check valves, which avoid liquid and/or gas C0.sub.2 from escaping when removing or replacing C0.sub.2 containers individually.

A heat source unit includes: a compressor; refrigerant pipes for a flow of a gas refrigerant having been discharged from the compressor and a flow of a gas refrigerant to be sucked into the compressor; a refrigerant flow path module connected to the refrigerant pipes; and a casing accommodating the compressor, the refrigerant pipes, and the refrigerant flow path module; in which the refrigerant flow path module includes a module body having an upper surface and a lower surface, having a vertical length less than a horizontal length, and provided therein with a flow path for a refrigerant, the refrigerant flow path module is disposed above and apart from a bottom part of the casing, and the refrigerant pipes include a first pipe and a second pipe each communicating with the flow path in the module body and supporting the refrigerant flow path module.

A vapor-liquid separator includes a casing having an accommodation space, an inlet at the casing to allow a refrigerant mixture fluid to be intaken to the accommodation space therethrough, and an outlet at the side of the inlet to allow a gas phase refrigerant separated from the refrigerant mixture fluid to be discharged therethrough.

A thermal management system for an enclosure containing electrical components includes a thermoelectric cooling unit for controlling temperature inside the enclosure and a controller for the cooling unit, the controller being configured so that it can be installed within and protected by the enclosure, rather than requiring its own separate secure enclosure. The controller can further be installed within a housing of the thermoelectric cooling unit, which housing does not increase the footprint of the cooling unit.

An integrated receiver drier and economizer (RDE) includes a tank having a hollow interior receiving a first flow of a refrigerant therein, the first flow of the refrigerant including a liquid phase of the refrigerant accumulating within a liquid containing portion of the hollow interior of the tank. An economizer receiving a second flow of the refrigerant through an interior thereof is at least partially submerged in the liquid containing portion of the tank. The economizer forms a heat exchanging structure configured to exchange heat between the first flow of the refrigerant passing over an exterior of the economizer and the second flow of the refrigerant passing through the interior of the economizer. A desiccant is disposed in the liquid containing portion of the tank downstream of the economizer with respect to the first flow of the refrigerant through the hollow interior of the tank.

A packaged, pumped liquid, evaporative-condensing recirculating ammonia refrigeration system with charges of 10 lbs or less of refrigerant per ton of refrigeration capacity. The compressor and related components are situated inside the plenum of a standard evaporative condenser unit, and the evaporator is close coupled to the evaporative condenser. Single or dual phase cyclonic separators may also be housed in the plenum of the evaporative condenser.

A flange-mounted inline valve arrangement includes a flange having an internal fluid passage, and an inline electrically-operable valve coupled to the flange. The inline valve includes a valve body and a valve member movable relative to the fluid passage in the flange for controlling flow. The valve arrangement also includes an electrical feed that connects to the electrically-operable valve through the flange for enabling an electrical connection external to the flange and other system piping. At least part of the electrical feed may be in a flow path and is fluidly sealed to prevent electrical shorts. The valve arrangement may be installed into the system as a single unit with an exterior coupling of the electrical feed on an exterior part of the flange to easily make the external electrical connection. The valve arrangement may be used in a chiller, where the inline valve is an electronic expansion valve.