74results about How to "Reduce evaporating pressure" patented technology

A system, configured to be disposed in a information technology equipment rack for providing ice thermal storage, includes a tank configured to hold water, a heat exchanger disposed in water in the tank and configured to convey a two-phase liquid and vapor refrigerant and to transfer heat between the water and the refrigerant, a first valve connected to a liquid and a vapor refrigerant line and configured to selectively connect the liquid refrigerant line to a first port and the vapor refrigerant line to a second port in a first mode and to connect the liquid refrigerant line to the second port and the vapor refrigerant line to the first port in a second mode, a thermostatic expansion valve connected to an inlet of the heat exchanger, and a liquid / vapor pump connected to an outlet of the heat exchanger and to the second port of the first valve.

The present invention relates to a compression / injection mixed refrigerating machine unit in the field of refrigerating technology. Said invention includes compressor, oil separator, condenser, high-pressure liquid storage device, filtering dryer, sight glass, electromagnetic valve, two-stage injector, low-pressure liquid storage device, thermal expansion valve and evaporator. Said invention also provides their connection mode and its working principle.

A cooling and heating control method of a multi type air conditioner in which a target pressure of a compressor is adjusted based on conditions of respective indoor units so as to reduce power consumption is provided. The cooling control method includes determining the indoor unit desired to execute power saving control, judging whether or not a difference between a temperature of a space in which the indoor unit desired to execute power saving control is located and a set temperature of the indoor unit is less than a reference value, raising a target evaporation temperature of the indoor unit upon judging that the difference is less than the reference value, comparing an evaporation temperature of the indoor unit with the raised target evaporation temperature, and raising an evaporation pressure of a compressor, when the evaporation temperature of the indoor unit is lower than the raised target evaporation temperature.

A vapor-compression refrigerant cycle device includes an ejector, a first evaporator for evaporating refrigerant flowing out of a pressure-increasing portion of the ejector, a second evaporator for evaporating refrigerant to be drawn into a refrigerant suction port of the ejector. In the refrigerant cycle device, a refrigerant suction pipe is connected to a refrigerant outlet of the second evaporator and the refrigerant suction port of the ejector, and the surface of the refrigerant suction pipe is covered by an insulating member. Furthermore, the ejector, the first evaporator, the second evaporator and the refrigerant suction pipe are arranged in a passenger compartment of the vehicle.

The invention relates to a jet refrigeration system driven by waste heat of a refrigerated vehicle with double evaporators, comprising a waste heat recovery device, a circulation pump, a first throttling device, a second throttling device, a first evaporator, a second evaporator, a first jet device, second ejector, condenser, and gas flow control device; the first ejector and the second ejector inject refrigerants of different temperatures from the first evaporator and the second evaporator respectively; the refrigerant in the first evaporator The temperature of the refrigerant in the second evaporator can be controlled above zero, which is used for the summer cooling of the cab of the refrigerated truck; through the control of the gas flow control device, the refrigeration in the second evaporator can be changed. The temperature and flow direction of the agent can be used to realize the heating of the cab of the refrigerated truck in winter. The invention can make full use of the waste heat of the automobile to realize the whole process of refrigerating the refrigerated vehicle, and at the same time meet the air-conditioning requirements of the driver's cab, thereby broadening the application field of the jet refrigeration system.

The invention relates to the field of heating ventilation air conditioners, in particular to an improved air treatment method and a fresh air conditioner device. The invention improves the problems of traditional fresh air treatment and air conditioners and particularly emphasizes that a plate-type air-air heat exchanger and indirect water evaporative cooling are used for recycling energy of sensible heat and latent heat in air exhaust in the fresh air treatment process of damp and hot regions in summer and condensed water is directly evaporated on an evaporator to improve the working condition of a compressor. Under the condition of quantificationally supplying outdoor fresh air, the energy efficiency ratio of the fresh air conditioner is increased, the thermal pollution, damp pollution and noise pollution of the fresh air conditioner to environments are reduced, the indoor air quality is improved, and meanwhile, the fresh air conditioner provides the manufacture, installation and using convenience for a local region all-air central air conditioner. The fresh air conditioner provided by the invention and a design and manufacture method of the fresh air conditioner are applicable throughout the year in various regions, particularly in the damp and hot regions; and the fresh air system provides controlled, comfortable and healthy air environments for indoor activity space of people and air conditioner environments for technology for processing, storage and the like.