Page 209 - Design of Solar Thermal Power Plants

3.5 MAJOR PARAMETERS AND PRINCIPLES OF DESIGN 193

3.5 MAJOR PARAMETERS AND
PRINCIPLES OF DESIGN

1. Installed capacity of power plant, estimated annual power
generation.
2. Concentrating mode: Tower-type, parabolic trough-type or others,
concentrator area.
3. Thermal-absorbing and heat-transfer medium and the respective
maximum working temperature: Water/steam, synthetic oil and
the respective maximum working temperature, molten salt, and its
maximum working temperature
4. Requirements on energy storage device: Quantity of thermal
storage tanks, thermal storage capacity, temperature, category of
materials, category and quantity of circulating pumps
5. Evaporator: Heat exchange pattern, volume, applicable medium,
circulating pump
6. Auxiliary boiler: Whether there is any auxiliary heating system,
type of auxiliary fuel (fuel or natural gas), annual consumption
and source of auxiliary fuel.
7. Shape and dimension of receiver: Cavity diameter and cylinder
size of tower-type; length and diameter of the evacuated tube of
parabolic trough-type.
8. Rated steam inlet parameters of steam turbine (main steam
pressure and temperature), rated power, minimum stable load,
unit thermal efficiency.
9. Heat-transfer fluid circulating equipment: Circulating pump,
expansion tank etc.
10. Control: Concentration field control mode; entire field control
mode.
11. Concentrator cleaning facilities and method: Manual cleaning,
machine cleaning, dry cleaning, washing.
12. Steam turbine condensed mode, dry-cooled or wet-cooled, annual
water consumption.
13. Efficiency: Annual mean efficiency of concentration field, annual
maximum efficiency of concentration field, annual mean
efficiency of receiver, annual mean efficiency of power plant.
14. Power plant initiation time under typical solar irradiation and
meteorological conditions.
15. CSP plant access system voltage grade and boost mode.
16. Thermal power plant grid access metering gateway point designed
at the division point of property.
17. Permanent engineering land use area.