摘要:
An ejector-type vapor compression refrigeration system wherein the coefficient of performance is maximized by the selection of the propellant and refrigerant fluids, the propellant being a perfluorocarbon immiscible with the refrigerant and having a relatively low heat of vapourisation and high molecular weight and the refrigerant having a relatively high heat of vaporization and low molecular weight.
摘要:
The present application provides a carbon dioxide based refrigeration system. The carbon dioxide based refrigeration system may include a mid temperature cycle with a mid temperature ejector, a low temperature cycle with a low temperature ejector, and a gas cooler/condenser in communication with the mid temperature cycle and the low temperature cycle.
摘要:
A thermally driven heat pump includes a low temperature evaporator for evaporating cooling fluid to remove heat A first heat exchanger located at an outlet of a converging/diverging chamber of a first ejector receives a flow of primary fluid vapor and cooling fluid vapor ejected from the first ejector for condensing a portion of the cooling fluid vapor An absorber located in the first heat exchanger absorbs cooling fluid vapor into an absorbing fluid to reduce the pressure in the first heat exchanger A second heat exchanger located at an outlet of a converging/diverging chamber of a second ejector receives primary fluid vapor and cooling fluid vapor ejected from the second ejector for condensing the cooling fluid vapor and the primary fluid vapor A separator in communication with the second ejector, the low temperature evaporator and the primary fluid evaporator separates the primary fluid from the cooling fluid.
摘要:
Air-condition heat pump capable of operation under a wide range of working environment temperature utilizing multiple evaporators (106,107) and pressure boosting (406) to enable the compressor to operate reliably under difference range of refrigerant evaporation temperature. Uninterrupted operation during defrosting of one of the evaporators (106,107).
摘要:
Method for operating a refrigerating system. An electromotor-driven or mechanically driven compression refrigerating system (1, 2, 3, 4) is thermally coupled to a thermally fed refrigerating system (5, 6, 7), whereby the liquefier (3) of the compression refrigerating system is cooled by the thermally fed refrigerating system (5, 6, 7).
摘要:
L'invention un dispositif de production de froid comprenant un cycle de réfrigération à éjecteur comprenant un circuit de circulation d'un fluide de travail comprenant trois branches agencées en parallèle: Une branche motrice sur laquelle sont agencés une pompe (101) et un générateur (102), et une branche frigorifique sur laquelle sont agencés un détendeur (103) et un évaporateur (104), et une branche de mélange sur laquelle sont agencés un éjecteur (200) et un condenseur (105) caractérisé en ce qu'il comprend un premier organe de compression réversible (300) agencé sur la branche de mélange en aval de l'éjecteur (200) et en amont du condenseur (105). L'invention trouvera plus particulièrement son application pour des dispositifs de production de froid fonctionnant à partir de source de chaleur à bas niveau thermique, par exemple de l'ordre de 80°C à 150°C, potentiellement fluctuante, voire intermittente.
摘要:
A thermally enhanced heating system (100) and a method for thermally enhancing a HVAC system are provided. The thermally enhanced heating system (100) preferably includes an outdoor HVAC unit (200) and an indoor HVAC unit (300). The indoor HVAC unit (300) includes a first heat exchanger (310) for transferring heat from a refrigerant, a second heat exchanger (320) for transferring heat from a fuel source, and a third heat exchanger (330) for transferring heat to the refrigerant. The outdoor HVAC unit (200) includes an outdoor heat exchanger (210) for transferring heat from an outdoor air to the refrigerant, a pump (220) configured to circulate the refrigerant, and an ejector (230) configured to combine the refrigerant from the outdoor heat exchanger (210) and the third heat exchanger (330). Preferably the outdoor HVAC unit (220) is operated to circulate the refrigerant through a first refrigerant circuit (500) and a second refrigerant circuit (400), and combine refrigerant in the first refrigerant circuit (500) and the second refrigerant circuit (400).