摘要:
An aqua-ammonia absorption apparatus generator assembly comprising a boiler section, a solution-heated-desorber section, and adiabatic desorber or GAX desorber section, and a rectifier section, incorporates a plurality of columns, each column comprising one or more of the sections, with the columns arranged so that the lowest end of a first column is lower than the top end of a second column, and uses one or more eductors driven by a feed stream from the absorber for pumping liquid refrigerant from the bottom of a lower temperature column to the top of the next hotter column.
摘要:
An HVAC/R system is configured with a variable frequency drive power supply which provides power to both a three-phase motor and to a single-phase motor. In some embodiments, the three-phase motor is a compressor motor and the single-phase motor is a condenser fan motor.
摘要:
A unitary heat spreader for cooling electronic components comprising an evaporator section comprising a plate configured for heat exchange communication with electronic components and a plurality of elongated evaporator channels therein, and a liquid phase-change refrigerant in the evaporator channels, and first and second condenser sections configured to substantially avoid heat exchange contact with electronic components, each condenser section comprising one or more elongated condenser channels in open and continuous fluid communication with one or more of the evaporator channels.
摘要:
An aqua-ammonia chiller apparatus is modified to include a heater function by providing a refrigerant by-pass for directing refrigerant to a heat exchanger capable of selectively functioning as a condenser during a heating mode or an evaporation during a cooling mode without passing through the apparatus condenser during the heating mode.
摘要:
An improved process for operating an aqua-ammonia absorption cooling system or heating and/or cooling system for supplying cooling to an indoor space, the system including a heat exchange assembly having a first heat exchanger exterior to the indoor space to be heated and/or cooled and a second heat exchanger using a phase-change refrigerant other than ammonia in heat transfer exposure with the interior of the indoor space, comprises pumping more liquid phase-change refrigerant from the refrigerant condensing heat exchanger to the refrigerant vaporizing heat exchanger than is required to meet the heat load transfer in the heat exchanger for vaporizing the phase-change refrigerant alone. The invention includes an apparatus for carrying out the process.
摘要:
A cascade heat pump system is configured with variable-speed compressors which allow operation at a high system coefficient of performance for a given thermal load. An electronic control module may be utilized to dynamically vary the speed of the compressors to achieve maximum energy efficiency. Variable-speed fans or blowers may also be used.
摘要:
An enclosure or shelter having an interior chamber for housing electronic components and equipment is provided with an HVAC/R system configured with a rechargeable DC power source for power back-up to maintain substantially uninterrupted power in the case of a main power failure. The system includes one or more variable frequency drives (VFD) controlled by a VFD controller and configured to provide three-phase power to one or more three-phase AC motors and single-phase power to one or more single-phase AC motors. The system also includes a power source controller configured to select and power sources based on availability of one or more power sources and other logic.
摘要:
A heating, ventilation, air conditioning, and refrigeration system is includes one or more variable frequency drives (VFD) controlled by one or more VFD controller, which are configured to provide three-phase power to one or more three-phase AC motors and single-phase power to one or more single-phase AC motors. The system also includes a power source controller configured to select from a plurality of power sources based on availability of one or more power sources and time so as to maximize the economic efficiency of operating the system.