Complex combined heat and power generation heat supply system based on low-temperature waste heat recovery and electric heating load adjusting method

Abstract

The invention discloses a complex combined heat and power generation heat supply system based on low-temperature waste heat recovery and an electric heating load adjusting method, and belongs to the technical field of central heating. The complex combined heat and power generation heat supply system comprises a thermoelectric unit, a condenser, a cooling tower, a heat supply network initial station, an absorption heat pump and a heat exchange station. According to the complex combined heat and power generation heat supply system based on the low-temperature waste heat recovery and the electricheating load adjusting method, an absorption heat pump performance coefficient prediction model is established based on parameter changes of factors such as steam, heat supply network water and circulating water entering the absorption heat pump and exiting from the absorption heat pump, accurate prediction of an absorption heat pump performance coefficient is achieved, and the operation condition of a combined heat and power generation unit is reasonably arranged through heat load prediction of the heat supply system; meanwhile, electric load and thermal load meeting requirements are output,and efficient and stable operation of the combined heat and power generation unit is achieved; and when the real-time heat load requirement is met, the difference between the absorption heat pump andthe supplied heat load is balanced through the absorption heat pump, and a first water-water heat exchanger and a second water-water heat exchanger are reasonably designed. Efficient operation of theabsorption heat pump is achieved while it is guaranteed that the whole system saves energy and is efficient.

Description

technical field [0001] The invention relates to the technical field of central heating, in particular to a complex cogeneration heating system based on low-temperature waste heat recovery and an electric heating load adjustment method. Background technique [0002] The central heating system is one of the city's infrastructure and one of the signs of the city's modernization level. The central heating industry is developing rapidly in my country. By the end of 2016, the area of ​​central heating in my country was about 7 billion square meters, of which the area of ​​central heating with combined heat and power generation was about 3.5 billion square meters. The high-quality development of the central heating system is directly related to the urban development. modernization and the improvement of people's living standards. For the cogeneration central heating system, it not only shoulders the heating demand on the heating network side, but also shoulders the power generation...

AI Technical Summary

Problems solved by technology

However, in the above-mentioned patented technologies, no consideration is given to how to ensure the stability of the thermal power unit’s operating conditions when the external heating load changes, and how to use the absorption heat pump to balance the gap between the external demand heat load and the thermal power unit’s output heat load. It is also necessary to ensure the efficient and stable operation of the absorption heat pump

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