A refrigerant circuit is configured by connecting, by pipes, a compressor that compresses a heat-source-side refrigerant, a first refrigerant flow switching device, a heat-source-side heat exchanger, an expansion device, and one or more intermediate heat exchangers that exchange heat between a heat-source-side refrigerant and a heat medium that is different from the heat-source-side refrigerant. A controller performs control of pumps to drive the pumps at a specific pump capacity or higher to circulate the heat medium at a time when a heat recovery defrosting operation for causing the heat-source-side refrigerant that has been heated by the heat medium in the intermediate heat exchangers to flow into the heat-source-side heat exchanger for defrosting purposes.

An air handling unit, particularly for data center cooling, operates to cool a flow of return air from a conditioned space using a flow of ambient air. The return air is recirculated to the conditioned space as supply air. The flow of ambient air can be adiabatically cooled to a lower temperature to provide additional cooling. A flow of makeup air can be joined with the cooled return air to form the supply air, and can be sourced from the ambient environment directly or from the heated flow of ambient air.

An air conditioning system includes a storage medium and an air conditioning system, for a three-pipe air conditioning system, the three-pipe air conditioning system includes a compressor, an outdoor heat exchanger, an indoor heat exchanger, a gas-liquid separator, a first pipeline, a second pipeline and a third pipeline; the oil return control method comprises the following steps: controlling the compressor to operate at a first frequency in a refrigerating mode; judging whether the operation duration of the refrigerating mode reaches a first preset time or not; if so, the air conditioning system enters an oil return state, and the compressor, the third pipeline, the second pipeline and the gas-liquid separator are controlled to be communicated in sequence to form a refrigerant circulation loop.

A heat dissipating blower for cooling a condenser in a refrigerator with reduced vibration and reduced noise. The heat dissipating blower includes a drive device configured to generate a rotational force, a fan coupled to the drive device, a support member configured to support the drive device, and a support frame coupled to the support member. The support member includes a fastening portion coupled to the drive device, and a connection frame spaced apart from the support frame. The heat dissipating blower further includes one or more vibration-attenuation members disposed between the connection frame and the support frame.

The present invention relates to a heat conditioning system for a motor vehicle, including: an air conditioning loop of a motor vehicle (B) in which a cooling fluid circulates and which includes a compressor (2), at least two heat exchangers (8,42) and at least one decompression device (24,26), a heat processing unit (U) of a battery (100) of the vehicle, which unit includes a heat processing means (46) which is capable of being in a heat exchange relation with the battery of the vehicle, in which the heat processing means is in a heat exchange relation with the air conditioning loop.

A heat pump system adjusts a degree of subcooling of an indoor-side heat exchanger in a heating priority mode, and adjusts any one of a degree of subcooling of a hot-water supply-side heat exchanger (water-side heat exchanger) and a discharge temperature of a compressor in a hot-water supply priority mode.

An object of the present invention is to allow uniform distribution of a refrigerant by a distributor. A refrigerant pipe includes a bent pipe formed in the shape of a curve and a downstream pipe connected to the downstream side of the bent pipe and formed to be linear. A distributor to distribute the refrigerant into a plurality of flow paths is connected to the downstream pipe on the downstream side. An inner wall on the inner peripheral side of the bent pipe being on the side of the curvature center of the curve is a grooved surface with a groove formed therein, and an inner wall on the outer peripheral side of the bent pipe being on the side opposite to the curvature center of the curve is a smooth surface.

An object of the present invention is to allow uniform distribution of a refrigerant by a distributor. A refrigerant pipe includes a bent pipe formed in the shape of a curve and a downstream pipe connected to the downstream side of the bent pipe and formed to be linear. A distributor to distribute the refrigerant into a plurality of flow paths is connected to the downstream pipe on the downstream side. An inner wall on the inner peripheral side of the bent pipe being on the side of the curvature center of the curve is a grooved surface with a groove formed therein, and an inner wall on the outer peripheral side of the bent pipe being on the side opposite to the curvature center of the curve is a smooth surface.

A cooling and heating platform is disclosed. An example cooling and heating platform includes an operating chamber with an operating liquid in the operating chamber. The example cooling and heating platform includes a heat exchanger in the operating chamber. The heat exchanger exchanges heat between the operating liquid and an application fluid in the heat exchanger to maintain the application fluid at a predetermined temperature for an application.

A cooling and heating platform is disclosed. An example cooling and heating platform includes an operating chamber with an operating liquid in the operating chamber. The example cooling and heating platform includes a heat exchanger in the operating chamber. The heat exchanger exchanges heat between the operating liquid and an application fluid in the heat exchanger to maintain the application fluid at a predetermined temperature for an application.