Performance evaluation of solar aided feedwater heating of coal-fired power generation (SAFHCPG) system under different operating conditions

Solar repowering of PCC-retrofitted power plants; solar thermal plant dynamic modelling and control strategies

“…Power boosting mode: The power plant will operate producing surplus power from the same amount of fuel using the recovered high pressure steam (Hong-juan et al, 2013;Petrov et al, 2012). 2.…”

“…2. Fuel saving mode: The power plant will operate on partial load operating on lower gross power output, where heating requirement to produce a certain amount of power is partly provided by solar energy instead of coal (Hong-juan et al, 2013;Petrov et al, 2012;ZekiYılmazoglu et al, 2012).…”

Annual performance of a solar aided coal-fired power generation system (SACPG) with various solar field areas and thermal energy storage capacity

“…HP heaters and LP heaters are close type of heaters while deaerator is an open type heater. In a SACPG system, the integration of solar heat leads to the changes of mass flow rates and thermal parameters of extraction steam in each stage inevitably [4]. To calculate such variation, Matrix Thermal Balance Equation (MTBE) approach, i.e.…”

“…One of them lies in its flexible operation mode namely power boosting mode when power demand is high, and fuel saving mode when power demand is low [3]. Another advantage of SACPG is its high solar-to-electricity efficiency (SEE) compared with solar-only power station [4]. Essentially, the LCOE of SACPG has been shown to be lower than that of a stand-alone CSP plant [5].…”

“…Suresh et al [11] proposed the so called 4-E (namely energy, exergy, Nomenclature A c aperture area of solar field (m 2 ) AF annuity factor (-) b 1 , b 2 , b 3 [16,17] presented the performance and energy saving effect of SACPG in fuel saving mode. These six literatures [4,[13][14][15][16][17] indicated that a SACPG plant could achieve better offdesign and economic performance than a solar-alone CSP plant. However, none of previous studies mentioned above, which simulated the SACPG system, considered both plant's off-design operating condition and annual performance with real (hourly) meteorology data.…”