The Research And Development Of The Shell Pressure External Heating Device

In the recent years, our country’s urbanization process advance rapidly, by2020, ourcountry will add more than30billion square meters of building area. With the continuousincrease of the building area, the city centralized heating supply system has also been arapid development. An economic, savings, reasonable heating mode is becoming evenmore urgent.When the hot water get through the civil substation, it need to get the secondary heatexchange to deliver it to the user. The reason is that different people and different placeshave different needs, so the hot water need to get the secondary heat exchange. The civilsubstation converts the hot water to the required temperature, then the pressure tank tomake it has enough press to deliver it to each hot user.In this paper, my topic aims at the volumetric heat exchanger and the semi-volumeheat exchanger to get the technical development and research. The new type of heatingpattern is through putting the circulating pump after the tank to make the shell pressureoutside into the pipe, then the tank form the pressure vessel change into a commoncontainer. Then through the example to get the equipment selection and the parametercontrol for the shell pressure external heating device to the heating system carry out in thesecondary heating network. Then get the economic analysis for the two heating devices.Form contrasting to the power consumption and the cost of equipment costing of the twodevices, then comprehensive obtain which is better form the economical efficiency pointof view. The results of the study show that the shell pressure external heating devicereduces the purchase cost of the equipment, increases the safely of the civil substationwhich in the residential community, and meets the needs of the hot user.