A control method for supplementary combustion type building heat exchange unit

Abstract

The invention discloses a control method of a supplementary-fired building heat exchange unit, comprising a plate heat exchanger, a gas-fired water heater, and the primary side return water and the secondary side return water of the plate heat exchanger are connected by pipes, each plate type The heat exchanger is correspondingly installed with a gas water heater, which is installed on the secondary side water supply pipe of the plate heat exchanger, and the gas water heater is connected to the gas pipeline. It also includes a control system, including a weather forecasting module, a data acquisition module, a control module, a display module, and a communication module. The control method includes establishing a heating system operation module, a gas supplementary combustion module, an analysis module, and an adjustment module for the transformed heat exchange unit; prejudging the establishment of a heating system operation module for the heat exchange unit through the analysis module, The judgment result enters the adjustment module in advance, and the heating system runs stably through the gas supplementary combustion module. The invention significantly reduces the dependence of the building heat exchange unit on the hydraulic balance, and realizes the precise delivery of thermal energy through multi-energy complementation.

Description

technical field [0001] The invention relates to the technical field of heat supply systems, in particular to a control method for a supplementary combustion type building heat exchange unit. Background technique [0002] Building heat exchange units have the advantages of simple and flexible construction, high safety, more precise adjustment, and more economical operation. However, using building heat exchange units to replace traditional heat exchange stations will expand the scope of the primary network and increase the difficulty of adjusting the hydraulic balance of the primary network. [0003] Due to the lack of heat network structure or control system, heat exchange units in some buildings cannot obtain enough heat energy from the primary side. Sometimes, in order to ensure that a small number of thermal stations or building units or buildings meet the heating standards, the valve opening of the station is manually increased to increase the primary side flow, but this...

AI Technical Summary

Problems solved by technology

[0002] Building heat exchange units have the advantages of simple and flexible construction, high safety, more precise adjustment, and more economical operation. However, using building heat exchange units to replace traditional heat exchange stations will expand the scope of the primary network and increase the difficulty of adjusting the hydraulic balance of the primary network.

[0003] Due to the lack of heat network structure or control system, heat exchange units in some buildings cannot obtain enough heat energy from the primary side

Sometimes, in order to ensure that a small number of thermal stations or building units or buildings meet the heating standards, the valve opening of the station is manually increased to increase the primary side flow, but this will affect the surrounding stations. When the working conditions change drastically, it will affect the entire network. hydraulic balance, but also cause energy waste

[0004] In the prior art, in order to reduce the heat supply on the primary side and reduce waste, it is chosen to increase the supplementary energy on the secondary side and increase the water inlet temperature on the secondary side. In the patent, the thermal storage electric boiler is used as an auxiliary heat source under extreme weather conditions; the thermal storage electric boiler is used as the peak load of the building's air conditioning load, although it can meet the heat requirements of the building in extremely cold weather; but in actual use In the process, this scheme or similar schemes have the following deficiencies: 1. It cannot solve the problem of primary network imbalance; 2. This scheme can only be used for peak regulation in extreme weather, and cannot be adjusted in real time according to the operation situation; 3. The heat energy generated by thermal storage electric boilers often exceeds the heat energy required by the building for heat exchange, and it is easy to cause waste of electric energy during long-term use

Images