Heating fuel cost allocation method based on process division for gas-steam combined cycle cogeneration unit

Abstract

The invention discloses a heating fuel cost allocation method based on process division of a gas-steam combined cycle heat and power cogeneration unit. steam generator and gas turbine-waste heat boiler-turbine-heat supply (turbine part)-heat supply (former condenser part); then, based on the extracted two process flows, calculate the heat obtained by cogeneration Cycle efficiency improvement; then according to the ratio of the heat consumption of steam turbine heating and power generation to the total heat consumption, the thermal cycle efficiency improvement is allocated, and then the heat supply consumption is corrected; finally, the power generation heat of the gas turbine is calculated Consumption, combined with steam turbine heat consumption to calculate the heating fuel cost sharing ratio. This method can ensure that the heat supply enthalpy drop included in the apportionment ratio is fully utilized, and can encourage cogeneration enterprises to improve production processes and improve the utilization efficiency of external heat supply.

Description

technical field [0001] The invention belongs to the technical field of cogeneration of heat and power, and relates to an apportionment method for rationally allocating heating costs of a gas-steam combined cycle, in particular to a method for apportioning heating fuel costs of a gas-steam combined cycle cogeneration unit based on process division. Background technique [0002] The gas-steam combined cycle makes full use of the energy released from the high temperature to low temperature range of flue gas, and effectively converts heat into electrical energy. The combined heat and power unit with external steam supply further improves the thermal efficiency of the cycle, and provides a part of heat energy for external supply while generating electric energy. In this process, both heat and electricity play an important role: electricity production is indispensable and is the main product of the power plant; heat production utilizes relatively low-temperature and low-pressure h...

AI Technical Summary

Problems solved by technology

However, the calculation of the heating cost still lacks a convincing solution. A reasonable heat and electricity sharing ratio can effectively promote the rational use of energy, and enable enterprises to reasonably obtain the benefits brought about by the improvement of thermal cycle efficiency, and improve the efficiency of enterprises in improving heating processes and Positiveness to improve overall cycle efficiency

[0003] Since the production form of gas-steam combined cycle cogeneration is significantly different from that of coal-fired cogeneration, there is currently no clear method for apportioning heating costs for gas-steam combined cycle cogeneration plants

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