Abstract:
This invention relates to the area of refrigeration and serves the purpose of air dehumidification in closed air cycle refrigeration systems. The character of the claimed moisture separator comprises the separation of moisture in a closed casing wherein air moves from the bottom upwards. Air goes through a labyrinth formed by metal plates with area less than the area of the casing base. The plates are fastened to the opposing casing walls in an alternating pattern and are disposed at an angle to the perpendicular line of the casing. Thus, the plates form gaps in a fishbone pattern, and air passing through this labyrinth undergoes compression and expansion multiple times. The plates are interlaid with metal mesh that serves multiple purposes: moisture separator filter and means of snow/ice build-up aiding. The key feature of the claimed moisture separator is the mesh size changing from higher values (at the inlet, at the bottom of the casing) to lower values (at the outlet, at the top of the casing). The mesh is disposed between the plates in such a way that air cannot move beyond it in any way. A combination of various principles of moisture separation ensures a reliable and non-stop operation of the air cycle refrigeration unit within a wide temperature range (from +5 to -80°C) without excessive design complexities and with streamlined maintenance.
Abstract:
A transport refrigeration system (200) having: a refrigeration unit (22) configured to circulate refrigerant through a refrigeration circuit; a battery system (190) configured to power the refrigeration unit; and a heat transfer system (195) thermally connected to the battery system, the heat transfer system being configured to transfer heat from the flash tank to the battery system through the vaporized refrigerant. The refrigeration unit includes: a refrigerant compression device (32) having an inlet and an outlet; a refrigerant heat rejection heat exchanger (34) fluidly connected to the outlet; a flash tank (36) fluidly connected to the refrigerant heat rejection heat exchanger, the flash tank being configured to separate the refrigerant into a liquefied refrigerant and a vaporized refrigerant; and a refrigerant heat absorption heat exchanger (38) fluidly connected to the flash tank and configured to receive the liquefied refrigerant from the flash tank, the refrigerant heat absorption heat exchanger being fluidly connected to the inlet.
Abstract:
The present disclosure provides methods and system for the cooling of process plant water. A system can include a first heat exchanger for exchanging heat between a first process water stream and a refrigerant; a multiphase pump, coupled to the first heat exchanger, to increase the pressure of the refrigerant; a second heat exchanger, coupled to the multiphase pump and the first heat exchanger, for exchanging heat between a second process water stream and the refrigerant; a first expansion valve, coupled to the second heat exchanger, for lowering the temperature of the refrigerant; a vapor-liquid separator, coupled to the first expansion valve and the multiphase pump, for separating the liquid and vapor phases of the refrigerant; and a second expansion valve, coupled to the vapor-liquid separator and the first heat exchanger, for lowering the temperature of the liquid phase of the refrigerant.
Abstract:
A refrigerator includes a storage chamber, an evaporator configured to cool the storage chamber, and an air passage through which cold air generated by the evaporator flows. The air passage includes a blower fan configured to blow the cold air to the storage chamber, and a trap part in which warm air generated by a defrosting operation stays, such that warm air generated by the defrosting operation is prevented from being introduced into the inner space of the refrigerator through the air passage. In accordance with the present disclosure, the refrigerator includes the trap part in which warm air generated by the defrosting operation is trapped, such that warm air generated by the defrosting operation can be prevented from being introduced into the inner space of the refrigerator through the air passage.
Abstract:
A system (20; 300) comprises: a compressor (22) having a suction port (40) and a discharge port (42); an ejector (32) having a motive flow inlet (50), a suction flow inlet (52), and an outlet (54); a separator (34) having an inlet (72), a vapor outlet (74), and a liquid outlet (76); a first heat exchanger (24); an expansion device (28); and a second heat exchanger (26; 302). Conduits and valves are positioned to provide alternative operation in: a cooling mode; a first heating mode; and a second heating mode. In the cooling mode and second heating mode, a needle (60) of the ejector is closed.
Abstract:
Systems and methods for multi-stage refrigeration in mixed refrigerant and cascade refrigeration cycles using one or more liquid motive eductors.