Environmental Engineering Reference
In-Depth Information
9.1.3. Program Input and Output Data
In conducting a computer simulation of a solar desalination plant, input data need to be
revised according to changes in plant specifications such as absorber area, accumulator
capacity, or evaporator capacity. The items of data input that can be revised using program
“SYDT1” are as follows:
•
Title of simulation run
•
Starting and finishing date of simulation
•
Specifications of daily data print out for each month
•
Correction coefficient of solar radiation by month
•
Correction coefficient of ambient temperature by month
•
Collector absorption area of field
•
Azimuth angle of collector
•
Collector support angle
•
Tilt angle of absorber plate
•
Heat collecting water flow rate
•
Heat collection pump rated power consumption
•
Heat accumulator capacity
•
Heat accumulator initial temperature distribution
•
Evaporator capacity
•
Maximum brine temperature
•
Number of effects of evaporator
•
Heating water flow rate
•
Seawater flow rate
•
Power consumption of vacuum pump and other evaporator pumps
•
By-pass valve open/close temperatures
•
Evaporator start/stop temperatures
•
Correction coefficient of dust influence
•
Specification of collector cleaning days
Table 14. Types of meteorological data which can be used in "SOLDES"
Data name
Solar radiation data
Ambient temperature data
MEDT1
Hourly total solar radiation on tilt
surface
Input of data obtained at Abu Dhabi
solar desalination plant
Hourly ambient temperature
Input of data obtained at the Abu Dhabi
solar desalination plant
MEDT2
Instantaneous total solar radiation on
horizontal surface by hour
Instantaneous ambient temperature by
hour
MEDT3
Daily total solar radiation on tilt
surface
Daily mean, daily maximum and daily
minimum ambient temperature
MEDT4
Daily total solar radiation on horizontal
surface
Daily mean, daily maximum and daily
minimum ambient temperature
Four types of meteorological data can be accommodated in the program (see table 14).
The type MEDT1 is used in the solar desalination plant where the hourly global radiation and
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