寒冷地区空气源热泵辅助太阳能热水器供暖性能
李金平, 董玉慧, 李彩军, 代静波, 牛轶男, NOVAKOVIC Vojislav

Performance of Solar Vacuum Tube Water Heater-Air Source Heat Pump System in Cold Area
LI Jinping, DONG Yuhui, LI Caijun, DAI Jingbo, NIU Yinan, NOVAKOVIC Vojislav
图18 经济参数变化时的投资回收期
Fig.18 Payback period versus economic parameters