在对槽型抛物面集热器所吸收的有效辐射进行系统分析的基础上,改进了末端效应的计算方法,提出了以入射辐射强度(incident direct insolation,IDI)替代直射辐射强度(direct normal insolation,DNI)作为当地太阳能资源评估标准的见解.根...在对槽型抛物面集热器所吸收的有效辐射进行系统分析的基础上,改进了末端效应的计算方法,提出了以入射辐射强度(incident direct insolation,IDI)替代直射辐射强度(direct normal insolation,DNI)作为当地太阳能资源评估标准的见解.根据计算结果,以分别处于纬度29.43°N和43.47°N的拉萨市和内蒙古奈曼为例,从全年的角度来看,拉萨的DNI值超出IDI值14.33%,而纬度较高的奈曼则相差22.43%之多;从系统模拟分析的结果来看,在槽型抛物面太阳能电站选址时,采用IDI值比DNI值更加合理.展开更多
为研究光热发电系统的持续发电时间,根据四季直射辐射(Direct Normal Irradiance,DNI)指数变化下的蓄热规律,建立合理的发电运行策略,对集热器和汽轮机建立了热力模型,并应用时间序列分析方法结合气候条件分析了光热发电系统在不同工况...为研究光热发电系统的持续发电时间,根据四季直射辐射(Direct Normal Irradiance,DNI)指数变化下的蓄热规律,建立合理的发电运行策略,对集热器和汽轮机建立了热力模型,并应用时间序列分析方法结合气候条件分析了光热发电系统在不同工况下的运行时间。结果表明:夏季集热效率虽然不是最高,但集热量最多,汽轮机运行时间最长、发电量最多;冬季集热效率稳定但热经济性差,集热量最少且汽轮机运行时间最短,发电量最少;春秋季集热效率高但气候条件不稳定,其发电量比夏季少但比冬季多。展开更多
太阳法向直射辐射(direct normal irradiance,DNI)是太阳能光热发电系统(concentrating solar thermal power,CSP)的主要能量来源,准确地选取典型年光资源就显得尤为重要,典型年光资源形成及分析方式没有统一的规程规范。以我国西北地...太阳法向直射辐射(direct normal irradiance,DNI)是太阳能光热发电系统(concentrating solar thermal power,CSP)的主要能量来源,准确地选取典型年光资源就显得尤为重要,典型年光资源形成及分析方式没有统一的规程规范。以我国西北地区某地四种来源(气象站、NASA、Meteonorm、实测站)辐射数据为基础,采用气象统计学原理,提出一种适合光热电站太阳能资源评估方法,得出该地工程代表年DNI为1 885 kWh/m2。展开更多
Concentrating Solar Power (CSP) is non-existent in Sahel. Such a situation arises from the high investment costs required by these energy infrastructures and from a lack of information on the identification of suitabl...Concentrating Solar Power (CSP) is non-existent in Sahel. Such a situation arises from the high investment costs required by these energy infrastructures and from a lack of information on the identification of suitable sites to accommodate them. Conversely, CSP-biomass plants due to lower investment may be an option for CSP penetration in Sahel where Direct Normal Irradiation (DNI) is between 1400 kWh/m2/year and 2000 kWh/m2/year and significant biomass potential. This work presents the results of an identification of suitable sites for hybrid CSP-Biomass in the Sahel, case study of Senegal, taking into account the Direct Normal Irradiation, the availability of water, space and biomass potential. The identified sites have a DNI > 1600 kWh/m2/year. The biogas production capacity is equivalent to 5,096,563 m3/year. The quantity of Typha Australis, invasive plant in Senegal river valley available is estimated at more than 3 million tons. The capacity of electrical energy in this zone is estimated at 6.89 GWe for an installation surface estimated at 275.61 km2. The establishment of CSP/hybrid plants can also contribute to combat the proliferation of Typha Australis.展开更多
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 de...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.展开更多
文摘在对槽型抛物面集热器所吸收的有效辐射进行系统分析的基础上,改进了末端效应的计算方法,提出了以入射辐射强度(incident direct insolation,IDI)替代直射辐射强度(direct normal insolation,DNI)作为当地太阳能资源评估标准的见解.根据计算结果,以分别处于纬度29.43°N和43.47°N的拉萨市和内蒙古奈曼为例,从全年的角度来看,拉萨的DNI值超出IDI值14.33%,而纬度较高的奈曼则相差22.43%之多;从系统模拟分析的结果来看,在槽型抛物面太阳能电站选址时,采用IDI值比DNI值更加合理.
文摘为研究光热发电系统的持续发电时间,根据四季直射辐射(Direct Normal Irradiance,DNI)指数变化下的蓄热规律,建立合理的发电运行策略,对集热器和汽轮机建立了热力模型,并应用时间序列分析方法结合气候条件分析了光热发电系统在不同工况下的运行时间。结果表明:夏季集热效率虽然不是最高,但集热量最多,汽轮机运行时间最长、发电量最多;冬季集热效率稳定但热经济性差,集热量最少且汽轮机运行时间最短,发电量最少;春秋季集热效率高但气候条件不稳定,其发电量比夏季少但比冬季多。
文摘太阳法向直射辐射(direct normal irradiance,DNI)是太阳能光热发电系统(concentrating solar thermal power,CSP)的主要能量来源,准确地选取典型年光资源就显得尤为重要,典型年光资源形成及分析方式没有统一的规程规范。以我国西北地区某地四种来源(气象站、NASA、Meteonorm、实测站)辐射数据为基础,采用气象统计学原理,提出一种适合光热电站太阳能资源评估方法,得出该地工程代表年DNI为1 885 kWh/m2。
文摘Concentrating Solar Power (CSP) is non-existent in Sahel. Such a situation arises from the high investment costs required by these energy infrastructures and from a lack of information on the identification of suitable sites to accommodate them. Conversely, CSP-biomass plants due to lower investment may be an option for CSP penetration in Sahel where Direct Normal Irradiation (DNI) is between 1400 kWh/m2/year and 2000 kWh/m2/year and significant biomass potential. This work presents the results of an identification of suitable sites for hybrid CSP-Biomass in the Sahel, case study of Senegal, taking into account the Direct Normal Irradiation, the availability of water, space and biomass potential. The identified sites have a DNI > 1600 kWh/m2/year. The biogas production capacity is equivalent to 5,096,563 m3/year. The quantity of Typha Australis, invasive plant in Senegal river valley available is estimated at more than 3 million tons. The capacity of electrical energy in this zone is estimated at 6.89 GWe for an installation surface estimated at 275.61 km2. The establishment of CSP/hybrid plants can also contribute to combat the proliferation of Typha Australis.
文摘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.
