There has been extreme utilization of petroleum derivatives in recent decades for the generation of electrical vitality, which is contaminating nature in a regularly expanding approach to respond to the exponential demand for electrical power. In light of the essential vision of Saudi Arabia’s government towards the fractional change of reliance on oil as a national wellspring of economy, there is consideration for dependence on resources available inside the country, especially the potentials of renewable sources as alternatives. Saudi Arabia appreciates its geographical advantage inside the sun-belt zone, which has the most impressive sun-situated radiation total on earth. It is a correlative ideal position to consider interest in this valuable asset, through which it can achieve its vision by virtue of its promising whole deal prospects. This study highlights an approach for creating sunlight-based maps that examines the intensity of sun-radiation and its viability to deliver power. The system is to record the measures of sunlight radiation from several allocated data acquisition sites over the study area and balance them with the standard count, and later, make a sun-map in light of the yield. Likewise, the study will register the rate of energy from sun-situated radiation for the area and make preliminary proposals for the achievement of this test.
The geographic location of the Red Sea Project has the enormous advantage of plentiful solar radiation throughout the year. Solar energy can provide a great opportunity for reduced energy costs and easier locally distributed access to energy [
It was once a technological breakthrough to supply each home with energy using a centralized energy distribution model (
As these facts became prevalent there was a new trend and the international com-munities’ councils started looking for alternative solutions that could mediate these problems. It is a common occurrence nowadays that rural communities are adopting a new model of energy supply, one that is locally generated. Uncovering local energy potential is not a simple task though. To identify the local renewable energy potential in each place is a multi-disciplinary task and that is where the use of Geographic Information Systems (GIS) comes in play [
Saudi Arabia’s economy is oil dependent. As a result, the ever-increasing consumption of oil as shown in
Renewable energy sources are directly (photovoltaic systems) and indirectly (wind, water, etc.) interrelated with the sun. Inevitably, almost all organisms rely, either directly or indirectly, on solar energy for their survival and maintenance [
The sunlight reaching the Earth’s surface is ten thousand times more than the average power consumed by humans in 2005 [
and is more consistent throughout the year than the other energy forms [
One important key element of solar irradiation is Direct Normal Irradiance (DNI). This indicator of solar irradiation is the direct irradiance received on an area perpendicular to the sun over the total solar spectrum. DNI is calculated over cloudless conditions and it is measured on site by receptors. It is used to calculate the solar power potential of an area. The precise definition that is used to avoid confusion is this: “Direct irradiance is the quotient of the radiant flux on a given plane receiver surface received from a small solid angle centered on the sun’s disk to the area of that surface. If the plane is perpendicular to the axis of the solid angle, direct normal solar irradiance is received.” ISO 9488:1999 (https://www.iso.org/).
It is measured in kilowatt-hours per square meter per day and usually provided as an average per year.
Diffused Horizontal Irradiance (DHI) is the amount of diffused solar radiation that reaches a surface indirectly in the form of scattered molecules and particles measured per unit area. It is basically energy that does not come from the beam of the sun. It also is measured on site by blocking the projected area of the sun from the receptors surface. It can be measured either directly by the appropriate instruments (pyrometers) or indirectly by the relationship between GHI and DHI (see Equation (1)). This is radiation is represented by the horizontal line as shown in the
Global Horizontal Irradiance (GHI) is the total amount of radiation that is received by a surface that is horizontal to the ground. It is the solar energy that enters the earth’s atmosphere before it is diffused by articles in the atmosphere. It is the sum of DNI, ground reflected radiation and the diffused radiation or else named Diffuse Horizontal Irradiance [
GHI = DHI + DNI ∗ cos θ z , with θz: solar zenith angle (1)
A solar map is a map containing information on the amount of sunlight received by a solar cell, a field, a piece of land, or other larger area (
Solar radiation is determined by the topography of the area. It may have additional economic data to help make decisions on future development of an area, but the essential elements of a solar map are Topographic, and Climatic data. That means Slope, Aspect, Shadow, and Orientation (relative to the movement of the sun) are all factors of determining the exposure to the sun in each part of a larger area [
The area of interest for this research is The Red Sea which is located along the Westen coast of the Kingdom of Saudi Arabia, between the cities of Umluj and Al-Wajh (
The area is characterized by its year-round temperate climate, with average summer temperatures reaching up to 31˚C (88˚F). According to the Red Sea Project Fact Sheet, this region is envisioned as an exquisite luxury resort destination established across 50 untouched natural islands in a lagoon that stretches along 200 km (125 miles) of stunning coastline [
The area of interest for this research has approximately 85,000 people living on the coasts of the Red Sea. It belongs to the Tabouk Governorate, Saudi Arabia, which has a total population of 455,450 inhabitants (World Population Review).
Environmentally, it is surrounded by desert. Two monsoons define the climate of the Red Sea area. Those monsoons are the result of temperature differences between water surface and land. There are very few rainfalls during the year, averaging 100 mm (4 in) per year appearing locally as short showers [
The Red Sea project is located on the coast between Umluj city and Al-Wajh city. The altitude of the area is in the range of less than 300 feet as shown in
To perform the quantitative analysis, certain data are required to be allocated from the data sources such as:
・ Direct Normal Irradiance DNI;
・ Global Horizontal Irradiance GHI;
・ Diffused Irradiance DHI.
These data were collected by ground measurement stations operated by King Abdullah City for Atomic and Renewable Energy (KACARE). DHI and GHI data are measured by Pyranometer with a measurement resolution of 1 minute and a nominal uncertainty of ±2%. DNI was measured by pyrheliometer with a measurement resolution of 1 minute and a nominal uncertainty of ±2% (
For this study, daily and monthly averages were calculated from the values gathered by ground stations, covering a period from August 2013 to May 2017. For the data analysis shown in the next sections, all gathered data for each variable (DNI, GHI, DHI) were controlled and analyzed to determine trend and pattern for the study area.
The data used in this study is based on almost four years (
・ Umluj solar station (site 1),
・ Al-Wajh solar station (site 2),
・ Duba solar station (site 3).
We also used data derived from satellite provided by NASA via their Power data access viewer portal (https://power.larc.nasa.gov/data-access-viewer/). GHI data are extracted and downloaded from this portal covers from January 2000 to March 2018 with a resolution of 1 degree × 1 degree.
As shown in
y = 4.1308 x + 5896.8 (2)
this equation shows that is a very slight increment along the time period of the data.
2013 | 2014 | 2015 | 2016 | 2017 | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | station | GHI average | DNI average | DHI average | GHI average | DNI average | DHI average | GHI average | DNI average | DHI average | GHI average | DNI average | DHI average | GHI average | DNI average | DHI average |
JAN | Umluj station | 4433.0 | 6137 | 1215.3 | 4414.5 | 6051 | 1258.7 | 4483.7 | 5658.4 | 1491.7 | 4448.2 | 6085.1 | 1233.7 | |||
Al-Wajh station | 4356.1 | 6214.4 | 1194.7 | 4503.9 | 6367.9 | 1231.8 | 4228.4 | 5580.6 | 1395.7 | 4200.7 | 5446 | 1323.6 | ||||
Duba station | 4288.5 | 6519.4 | 1040.9 | 4278.5 | 6188.2 | 1210.2 | 4390.5 | 6495.9 | 1175.1 | 4044.4 | 5473 | 1299 | ||||
FEB | Umluj station | 5496.7 | 6968.9 | 1366.8 | 5037.2 | 5042.1 | 1981.3 | 5583.6 | 6989.6 | 1433.6 | 5284.5 | 5960.5 | 1716.4 | |||
Al-Wajh station | 5422.9 | 7340.9 | 1236.4 | 4967.4 | 5011.7 | 2000.5 | 5517.5 | 7198.4 | 1367.6 | 5057.4 | 6045.2 | 1525.6 | ||||
Duba station | 5385.1 | 7638.9 | 1107.5 | 4833.8 | 5323.6 | 1734.7 | 5492.1 | 7722.4 | 1144.8 | 5226.7 | 6666.4 | 1447.2 | ||||
MAR | Umluj station | 6127.1 | 5666.9 | 2207.7 | 6099.5 | 5739.8 | 2205 | 5733.2 | 4759.3 | 2496.5 | 6148.7 | 6196.2 | 2006.1 | |||
Al-Wajh station | 5989.7 | 5882.9 | 2035 | 6134.6 | 6066.6 | 2065 | 5860.7 | 5849 | 2079.7 | 5541.5 | 5803.6 | 1725 | ||||
Duba station | 5843.8 | 5880.6 | 1930.4 | 5973.3 | 6072.6 | 1967 | 5774 | 5646 | 2052.3 | 6089.8 | 6797.4 | 1688.2 | ||||
APR | Umluj station | 6636.1 | 5531.9 | 2538.7 | 7239.9 | 6300.2 | 2659 | 7214.3 | 7093.6 | 2095.6 | 6404.3 | 4908.7 | 2766.8 | |||
Al-Wajh station | 6744.5 | 5723.3 | 2587.1 | 7495.8 | 7173.9 | 2325 | 7311.2 | 7652.7 | 1882.1 | 6136.7 | 5170.5 | 2389.2 | ||||
Duba station | 6903 | 6172.5 | 2452.8 | 7474.3 | 7355.4 | 2193.3 | 7230.4 | 7477.2 | 1941.5 | 6394.9 | 5691.7 | 2330.9 | ||||
MAY | Umluj station | 7165.3 | 6076.2 | 2584.7 | 7134.2 | 5919.9 | 2644.5 | 7835.1 | 7681.8 | 2111.6 | 7035.7 | 6147.7 | 2419.5 | |||
Al-Wajh station | 7576.3 | 7350.9 | 2169.6 | 7328.7 | 6409 | 2562.7 | 7982.2 | 7920.5 | 2112.9 | 7123.6 | 6746.4 | 2143.7 |
Duba station | 7544.3 | 7403.2 | 2113.6 | 7616.4 | 6998.4 | 2476.8 | 7834.5 | 7770 | 2103.2 | 7236.6 | 7278.6 | 1884.1 | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
JUN | Umluj station | 7803.3 | 7430.8 | 2233.1 | 7873.1 | 7445.8 | 2325.9 | 7912.4 | 7555 | 2249.4 | ||||||
Al-Wajh station | 8022.4 | 8169.7 | 2014.4 | 8138.6 | 8151.6 | 2127.2 | 8274.4 | 8561.4 | 1954.3 | |||||||
Duba station | 8067.5 | 8402.7 | 1917.2 | 8090.9 | 8290.3 | 2004.7 | 8077.6 | 8204 | 1992.9 | |||||||
JUL | Umluj station | 7716.6 | 8153 | 1702.8 | 7826.4 | 8311.9 | 1713.2 | 7648.3 | 7836.3 | 1844.6 | ||||||
Al-Wajh station | 7784.1 | 8467 | 1608.5 | 7861 | 8488.8 | 1677.3 | 8038 | 8794.2 | 1628.6 | |||||||
Duba station | 7855.8 | 8770.2 | 1503.5 | 7865 | 8621.1 | 1594.6 | 7826.5 | 8847.1 | 1431 | |||||||
AUG | Umluj station | 7028.5 | 6617.6 | 2110.6 | 6527.9 | 4704.7 | 2928 | 6863.2 | 6057.7 | 2333.3 | ||||||
Al-Wajh station | 7232.2 | 7541 | 1768.8 | 6944.9 | 5693.5 | 2652.6 | 7170.1 | 6767.4 | 2215.3 | |||||||
Duba station | 7454.3 | 8478.8 | 1450.2 | 7309.7 | 8106.7 | 1534.7 | 7038.2 | 6288.5 | 2342.8 | 7013.3 | 7056.7 | 1908.9 | ||||
SEP | Umluj station | 6578.9 | 6511.8 | 1983.6 | 6479.2 | 6735.4 | 1759.9 | 6259.1 | 5445.5 | 2324.1 | 6385 | 6100.5 | 2052.1 | |||
Al-Wajh station | 6676.1 | 7809 | 1401 | 6250.9 | 5994.1 | 2061.5 | 6713.8 | 7145.7 | 1773.5 | |||||||
Duba station | 6605.2 | 7584.2 | 1500.8 | 6679.7 | 8212.4 | 1224 | 6401.4 | 6632.6 | 1846.7 | 6561 | 7672.3 | 1409.1 | ||||
OCT | Umluj station | 5616.3 | 6700.5 | 1424.4 | 5393.6 | 6009.3 | 1634.4 | 5344.1 | 5504.2 | 1848.6 | 5307.7 | 5517.6 | 1782.8 | |||
Al-Wajh station | 5774.6 | 7579.9 | 1190.4 | 5315.7 | 6479.7 | 1391.8 | 5256.8 | 5733.7 | 1687.6 | 5597.1 | 6409.4 | 1595.3 | ||||
Duba station | 5662.9 | 7772.4 | 1076.9 | 5312.9 | 6826.2 | 1291.5 | 5331.1 | 6219 | 1533.6 | 5395.1 | 6750.2 | 1308.6 | ||||
NOV | Umluj station | 4626.0 | 6439.8 | 1145 | 4683.2 | 6547 | 1120.2 | 4675.2 | 6287.6 | 1229.1 | 4710.3 | 6244 | 1263.8 | |||
Al-Wajh station | 4514.3 | 6251.1 | 1185.1 | 4723.6 | 6806.6 | 1137.8 | 4639.9 | 6410.5 | 1221.7 | 4681.9 | 6173.8 | 1342.2 | ||||
Duba station | 4447.3 | 6161.1 | 1192.5 | 4613.4 | 6965.2 | 998.1 | 4426.8 | 6224.8 | 1150.7 | 4353.7 | 5602.1 | 1344.3 | ||||
DEC | Umluj station | 4103.1 | 5884.3 | 1148.1 | 3975.9 | 5246.7 | 1289.7 | 4188.2 | 6138.3 | 1095.7 | 4151.3 | 5573.5 | 1328.2 | |||
Al-Wajh station | 3724.1 | 4945.3 | 1293.5 | 4039 | 5750 | 1206.4 | 4247.5 | 6647.4 | 1012.5 | 4030.5 | 5575.7 | 1300.1 | ||||
Duba station | 3611 | 5047.5 | 1204.7 | 4014.6 | 6092.8 | 1074 | 4067.8 | 6651.7 | 944 | 3889.6 | 5686.4 | 1170 |
As shown in
y = − 7.8179 x + 6444.6 (3)
this equation shows that is a slight decrement along the time period of the data.
As shown in
y = 6.1121 x + 1732.8 (4)
this equation shows that is a steady increment along the time period of the data.
As shown in
y = 4.7295 x + 5919.3 (5)
that is a very slight increment along the time period of the data. It also closely corresponds to the same GHI average from station 1.
As shown in
y = − 8.5064 x + 6857.3 (6)
that is a slight decrement along the time period of the data. It also closely corresponds to the same DNI average from station 1.
Interpretation: as shown in
y = 5.2022 x + 1605.7 (7)
that is a steady increment along the time period of the data. It also closely corresponds to the same DHI average from station #1.
As shown in
y = − 0.7648 x + 6057.7 (8)
that remains steady along the time period of the data.
As shown in
y = − 11.889 x + 7230.2 (9)
that is a steady decrement along the time period of the data.
As shown in
y = 4.8305 x + 1478.7 (10)
that is a slight increment along the time period of the data.
According to the measurements gathered from the three ground stations et and according to graphs (from
With regard to the trends of the different measures, it can be said that it is difficult to pronounce on the trend of the evolution of the different measured parameters since the period of measurements is rather short.
For this reason, we used NASA-provided satellite data covering a period of about 17 years. These data relate to GHI measures. We have indeed used these data to compare them with the data collected by ground measurement stations and to reveal the trend of GHI.
The figure below (
Rhe trend of GHI measurements has been made on satellite-collected measurements because they cover a period of about 17 years. Contrary to the figures on which there is a slight increase in the GHI values for the two stations of Umluj and Al-Wajh (
Tables 2-4 summarize the data limits and averages from data sources by measurement stations.
The yield in the study area for DNI & GHI considerably, as designated in
DHI | DNI | GHI | |
---|---|---|---|
Min | 1095.7 | 4704.7 | 3975.9 |
Max | 2928 | 8311.9 | 7912.4 |
Avg | 1873.4178 | 6264.7467 | 5991.813 |
DHI | DNI | GHI | |
---|---|---|---|
Min | 1012.5 | 4945.3 | 3724.1 |
Max | 2652.6 | 8794.2 | 8274.4 |
Avg | 1722.734 | 6665.9295 | 6025.712 |
DHI | DNI | GHI | |
---|---|---|---|
Min | 944 | 5047.5 | 3611 |
Max | 2476.8 | 8847.1 | 8090.9 |
Avg | 1592.25 | 6950.8348 | 6039.722 |
Direct Normal Irradiance (DNI) | 6627.1703 Wh/m2 |
---|---|
Global Horizontal Irradiance (GHI) | 6019.0824 Wh/m2 |
Direct Horizontal Irradiance (DHI) | 1729.4673 Wh/m2 |
Azimuth Angle (θz) | 49.66339 deg |
The goal was to investigate the rate of direct solar radiation, direct global radiation, and diffused radiation, by analyzing these elements and exploring the correlations between them, demonstrating the intensity of solar radiation as per the sampling locations. As per
The figures as shown by the resulted tables were slanted to high rates; the outcomes tended to rise with a high normal or the like. This is an underlying sign of the speculation of a high ratio of sun radiation in the study area. The investigation performed on the information is quantitative with a specific end goal to help envision the average rate of radiation and the measure of vitality that can be created at this site.
The zone of the Red Sea project is rich with sun radiation consistently and the climate is steady and clear more often than not, notwithstanding the number of hours of daylight is very high as shown in
Also, current costs of the technology and constraints on financial support indicate that only projects that are located in the areas with the highest DNI are likely to be viable in the near future with annual average DNI values greater than 2.2 MWh/m2/year or 6 KWh/m2/day.
Every one of these assumptions might be considered as profitable factor relating the speculation of solar radiation in the study area.
Special thanks to King Abdullah city for renewable energy for their cooperation providing the data used in this research.
The authors declare no conflicts of interest regarding the publication of this paper.
Siouti, A. and Belhaj Ali, A. (2019) Evaluation of Solar Energy Potential for the Red Sea Project, Kingdom of Saudi Arabia. Natural Resources, 10, 96-114. https://doi.org/10.4236/nr.2019.104007