Method for estimating system equipment cost on basis of whole life cycle

Abstract

The invention discloses a method for estimating system equipment cost on basis of a whole life cycle, and belongs to the field of economic indicator calculation of comprehensive energy supply systems. The method is characterized in that the whole life cycle of equipment is estimated with purchasing time of the equipment as a time starting point and overhaul time of the equipment as a time ending point, the sum of all expenses for maintaining normal operation of the equipment in the time period is counted, and the value of the sum is the whole life cycle cost of the equipment. According to the method, the following indexes in the whole life cycle cost of the equipment of equipment purchasing and installation cost, equipment maintenance cost, equipment fuel cost and equipment overhaul cost are taken into consideration. Cost of the system equipment is analyzed on the basis of the whole life cycle, and the problem that when system planning is carried out, certain mistakes appear in model selection of the equipment, and consequently obtained benefits cannot recover maintenance cost in the operation process of the equipment can be solved. According to the method, the whole life cycle cost of the system equipment is calculated, and the method has important guidance significance in early planning and scheme selection of the system.

Description

technical field [0001] The invention belongs to the field of economic index calculation of integrated energy supply systems, and in particular relates to a method for optimizing system planning schemes and equipment selection based on full life cycle cost analysis. Background technique [0002] In order to maintain sustainable development, my country's economy is in a period of rapid transition from extensive development to economical development. In the energy industry, due to the low energy utilization rate of the traditional energy supply system, its economy can no longer meet the needs of society. The comprehensive energy supply system integrates the three main energy supply demands of electricity, heat and cold, and increases the primary energy utilization rate of the system to more than 70%. However, due to the wide range of equipment involved in the comprehensive functional system, there are various types of equipment models. Therefore, on the basis of ensuring the ...

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Problems solved by technology

The cost index obtained by this method is often misleading for the selection of system equipment

For example, equipment with a lower price is selected to reduce equipment costs, but in fact, after the model is put into production, the income obtained cannot recover the investment in its operation stage, which eventually leads to the failure of the selection of the entire system solution, causing greater losses to investors. loss

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