Heat-saving power-saving control method for high-low-region direct connecting unit

Abstract

The invention adopts a dynamic thermal load control mode. A two-way electric valve and a variable-frequency circulating pump are mounted on high-low-region backwater; a temperature controller is used for acquiring an outdoor environment and an average temperature of supplied backwater to give out a valve location signal to control the two-way electric valve to realize closed-loop control on the average temperature; and a flow controller controls variable-flow operation of the variable-frequency circulating pump through a constant pressure difference mode, so that heat saving and power saving of the high-low-region direct connecting unit are realized. The invention solves the problems that the high-low-region direct connecting unit does not save heat and power in operation, and discloses a heat-saving power-saving control method for the high-low-region direct connecting unit.

Description

technical field [0001] The invention belongs to the field of automatic heat supply control, and relates to the on-demand heat supply control of a directly connected heating system of a high-rise residential building, in particular to a heat-saving and power-saving control method of a direct-connected unit in a high-low zone. Background technique [0002] At present, more and more high-rise residential buildings are built, so a large number of direct-connected heating systems for high and low areas are required, and heat-saving and power-saving measures are not taken for the direct-connected units for high and low areas used in large numbers, resulting in a lot of waste of heat and electricity; the current heating The equipment is designed according to the design parameters. The so-called design parameters are the design parameters at the coldest outdoor temperature. Since the outdoor temperature is higher than the design outdoor temperature most of the time in the heating sea...

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Problems solved by technology

[0002] At present, more and more high-rise residential buildings are built, so a large number of high-low area direct-connected heating systems are required, and the heat-saving and power-saving measures for the high-low area direct-connected units used in large numbers have not taken measures, resulting in a waste of a lot of heat and electricity; the current heating system The equipment is designed according to the design parameters. The so-called design parameters are the design parameters at the coldest outdoor temperature. Since the outdoor temperature is higher than the design outdoor temperature most of the time in the heating season, if the heat is supplied according to the design outdoor temperature for a long time, it will It will waste a lot of heat energy and electric energy; the high-low zone direct connection unit is based on the heating system of the low zone, adding a pressurized circulating pump in the high zone to supply heat to the high zone. Since it is not a closed circulation system, the booster pump needs to provide Hot water circulation can only be achieved with extra head; in addition, there is generally a lack of control devices, and the booster pump has been running at the designed flow rate, which is a waste of electricity; in addition, because the high area is based on the low area hot water heating, it is difficult to achieve quality control, so far So far, no dedicated high-zone heat load control device has been seen.

[0003] Since the temperature difference and flow rate are both operated under the design conditions, the flow rate multiplied by the temperature difference is the heat delivered to the user's home, so the heat supply must be more than the user's demand, causing the user to open the window to dissipate heat, consuming heat and electricity

At present, a large number of directly connected heating systems in high and low areas are in the working condition of no water supply temperature control and full flow operation, which wastes both heat energy and electric energy. There is a great need for a method to realize water supply temperature control and flow control.

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