重庆地区某工业厂房闭式地表水源热泵空调系统LCC值分析及优化

With the application of life-cycle costing methods, the calculation and analysis on the LCC values of surface water source heat pump system and conventional heating and cooling systems in an industrial plant is done in this paper. After the analysis on the composition and characteristics of energy consumption, draw heat pump units, the conclusion shows that the heat pump unit, taking pumps, circulating pumps and chilled water pump costs energy for 78.5%, 4.4%, 5.4%, 11.7% of the whole surface water source heat pump systems separately, and the heat pumps unit and chilled water pumps take a larger proportion of energy consumption. By exploring measures on optimization of the system, the result shows that on the condition of the steady temperature of supply and return water for chilled water and the water source, when part-load rate is less than 28%, two units share the load evenly; and when it is greater than 28%, 4 units share the load evenly, then the system LCC reaches its minimum value at 2948.3.Meanwhile, the system LCC reaches even smaller value at 2888.4 when the chilled water pump is under frequency conversion control, achieving effect on energy conversation.