A separator and distributor assembly for a falling film evaporator housed within the evaporator shell includes a housing defining a separation volume, a refrigerant inlet configured to admit a liquid and vapor refrigerant flow into the separation volume and one or more refrigerant gutters extending along a lengthwise axis of the housing. The refrigerant gutter has a gutter inlet at a bottom of the separation volume, and the one or more refrigerant gutters are configured to receive separated liquid refrigerant from the separation volume. One or more sparge channels are in fluid communication with the refrigerant gutters. The sparge channel includes one or more sparge openings at a top of the sparge channel vertically below the gutter inlet. The one or more sparge openings are configured to flow liquid refrigerant therefrom.

A heat exchanger system is provided with at least one heat exchanger for heating the suction gas between the evaporator and the compressor inlet, which heat exchanger is heated by the refrigerant liquid. It is the object to achieve dry suction gas from a flooded evaporator. It is an object to achieve heat exchange with a minimum flow restriction. The objects can be fulfilled by a heat exchanger including a circulating path for the suction gas and for the refrigerant liquid. Hereby it can be achieved that the circulating path forms a highly effective heat exchanger. The circulating path can be achieved with a very large heat-transmitting surface. The circulation of the suction gas will force liquid particles in the suction gas to be forced outside in the circulating path and in that way come in direct thermal contact with the surface that separates the suction gas from the refrigerant liquid.

A heat exchanger system is provided with at least one heat exchanger for heating the suction gas between the evaporator and the compressor inlet, which heat exchanger is heated by the refrigerant liquid. It is the object to achieve dry suction gas from a flooded evaporator. It is an object to achieve heat exchange with a minimum flow restriction. The objects can be fulfilled by a heat exchanger including a circulating path for the suction gas and for the refrigerant liquid. Hereby it can be achieved that the circulating path forms a highly effective heat exchanger. The circulating path can be achieved with a very large heat-transmitting surface. The circulation of the suction gas will force liquid particles in the suction gas to be forced outside in the circulating path and in that way come in direct thermal contact with the surface that separates the suction gas from the refrigerant liquid.

A heating, ventilation, air conditioning, and refrigeration (HVAC&R) system includes a heat exchanger with a shell having a first pass configured to place a fluid in a heat exchange relationship with a first refrigerant and a second pass configured to place the fluid in a heat exchange relationship with a second refrigerant. The heat exchanger also includes a water box coupled to the shell and configured to direct the fluid from the first pass to the second pass. The HVAC&R system also includes a fluid mixing manifold disposed within the water box, where the fluid mixing manifold is configured to collect and mix a plurality of flows of the fluid from within the water box to generate a mixed fluid, and a sensor coupled to the fluid mixing manifold, where the sensor is configured to measure a parameter of the mixed fluid.

A heating, ventilation, air conditioning, and refrigeration (HVAC&R) system includes a heat exchanger with a shell having a first pass configured to place a fluid in a heat exchange relationship with a first refrigerant and a second pass configured to place the fluid in a heat exchange relationship with a second refrigerant. The heat exchanger also includes a water box coupled to the shell and configured to direct the fluid from the first pass to the second pass. The HVAC&R system also includes a fluid mixing manifold disposed within the water box, where the fluid mixing manifold is configured to collect and mix a plurality of flows of the fluid from within the water box to generate a mixed fluid, and a sensor coupled to the fluid mixing manifold, where the sensor is configured to measure a parameter of the mixed fluid.

A refrigerant distributor includes an outer pipe, an inner pipe, and a structural part. The refrigerant outflow hole is provided such that an angle θ between a lower end of the inner pipe on a vertical line passing through a center of the inner pipe and a position of presence of the refrigerant outflow hole as seen from the center of the inner pipe falls within a range of 10 degrees≤θ≤80 degrees. The refrigerant outflow hole comprises a sole refrigerant outflow hole provided in a vertical cross-section of the inner pipe at a position where the refrigerant outflow hole is provided.

A heat exchanger satisfies Expression (1) below, where the number of the main heat transfer tubes is represented as N.sub.1, and the number of the sub-heat transfer tubes is represented as N.sub.2. In this heat exchanger, the main heat exchanger satisfies Expressions (2) and (3) below, while the sub-heat exchanger satisfies Expressions (4) and (5) below.

0.1<N.sub.2(N.sub.1+N.sub.2)<0.4  (1)

0.03<Ta.sub.1/Ha.sub.1<0.3  (2)

0.03<Ta.sub.2/Ha.sub.2<0.3  (3)

AT.sub.1<Gr.sub.1/(G×D.sub.1(ρL.sub.1−ρG.sub.1)).sup.(1/2)×(X.sub.1.sup.(1/2)×ρG.sub.1.sup.(−1/4)+(1−X.sub.1).sup.(1/2)×ρL.sub.1.sup.(−1/4)).sup.2  (4)

AT.sub.2<Gr.sub.2/(G×D.sub.2(ρL.sub.2−ρG.sub.2)).sup.(1/2)×(X.sub.2.sup.(1/2)×ρG.sub.2.sup.(−1/4)+(1−X.sub.2).sup.(1/2)×ρL.sub.2.sup.(−1/4)).sup.2  (5)

A vehicle power supply system for supplying power to a vehicle includes a power supply unit, and a heat supply unit configured to recover heat and supply the recovered heat to an object to be supplied with heat. The power supply unit includes a storage part configured to store the vehicle, and a power supply part configured to supply power to the vehicle stored in the storage part. The heat supply unit includes a heat recovery part configured to recover heat inside the storage part, and a heat release part configured to release the recovered heat to the object to be supplied with heat.

A vehicle power supply system for supplying power to a vehicle includes a power supply unit, and a heat supply unit configured to recover heat and supply the recovered heat to an object to be supplied with heat. The power supply unit includes a storage part configured to store the vehicle, and a power supply part configured to supply power to the vehicle stored in the storage part. The heat supply unit includes a heat recovery part configured to recover heat inside the storage part, and a heat release part configured to release the recovered heat to the object to be supplied with heat.

A heating, ventilation, air conditioning, and refrigeration (HVACR) system includes a first compressor having a first capacity, a second compressor having a second capacity, a condenser, an expansion device, and an evaporator fluidly connected. The first compressor and the second compressor are arranged in parallel. The first compressor includes a first lubricant sump. The second compressor includes a second lubricant sump. The first lubricant sump is fluidly connected to the second lubricant sump via a lubricant transfer conduit. A flow restrictor is disposed in the lubricant transfer conduit. The flow restrictor is configured to reduce a refrigerant flow between the first compressor and the second compressor.