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CÁLCULO RADIACIÓN SOLAR GLOBAL SUPERFICIES INCLINADAS

CÁLCULO RADIACIÓN SOLAR GLOBAL SUPERFICIES INCLINADAS. G (0). D(0) y B(0). Albedo R ( ,). Directa B( ,). Difusa D ( ,). G ( ,) = B ( ,) + D ( ,) + R ( ,). Método General de Cálculo I. Objetivo: Obtener G ( , ) conocida G(0). Correlaciones. K T y K D. Relaciones

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CÁLCULO RADIACIÓN SOLAR GLOBAL SUPERFICIES INCLINADAS

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  1. CÁLCULO RADIACIÓN SOLAR GLOBAL SUPERFICIES INCLINADAS Leocadio Hontoria 1 de 5

  2. G (0) D(0) y B(0) Albedo R (,) Directa B(,) Difusa D (,) G (,) = B (,) + D (,) + R (,) Método General de Cálculo I • Objetivo: Obtener G (, ) conocida G(0) Correlaciones. KT y KD Relaciones trigonométricas Expresión empírica Modelos Leocadio Hontoria 2 de 5

  3. Paso 1. Descomposición de G(0) en B(0) y D(0) • KT = G(0) / Bo(0) • KD = f(KT) • D(0) = KD ·G(0) • B(0) = G(0) - D(0) • Paso 2. Obtención de B(, ) a partir de B(0) • B(, ) = B(0) · cos(s) / cos (zs) • Paso 3. Obtención de D(, ) a partir de D(0) • D(, ) = D(0) (1+cos ) / 2 • Paso 4. Obtención de R(, ) • R(, ) = G(0)·(1-cos )/2 Método General de Cálculo II • Objetivo: Obtener G (, ) conocida G(0) Leocadio Hontoria 3 de 5

  4. Algoritmo Particular I Dato de Partida: 12 valores de Gdm(0). Radiación Global Media Mensual • Paso 1a. Descomposición de Gdm(0) en Bdm(0) y Ddm(0) • KTm = Gdm(0) / Bodm(0) • KDm = 1 - 1.13· KTm • Ddm(0) = KDm ·Gdm(0) • Bdm(0) = Gdm(0) - Ddm(0) • RESULTADO: Bd(0) Dd(0) y Gd(0) • Paso 1b. Paso de Bd(0) y Dd(0) a Bh(0) y Dh(0) • a = 0.4090 - 0.5016 ·sen (s + 1.047) • b = 0.6609 + 0.4767 ·sen (s + 1.047) • rd = /24·(cos  - cos s) / (s ·cos s - sen s) • rg = /24 · (a + b cos )·rd • Dh(0) = Dd(0)·rd • Gh(0) = Gd(0)·rg • Bh(0) = Gh(0) - Dh(0) • RESULTADO: Bh(0) Dh(0) y Gh(0) Leocadio Hontoria 4 de 5

  5. Paso 2. Paso de Bh(0) a Bh(,) • Bh(, ) = Bh(0) · cos(s) / cos (zs) • cos(s) = sen  sen  cos  - • sen  cos  sen  cos + • cos  cos  cos  cos  + • cos  sen  sen  cos  cos  + • cos  sen  sen  sen  • cos (zs) = sen  sen  + cos  cos  cos  • Paso 3. Paso de Dh(0) a Dh(,) • Dh(, ) = D(0) (1+cos ) / 2 • MODELO ISOTRÓPICO • Paso 4. Paso de Dh(0) a Dh(,) • Rh(, ) = Gh(0)· (1-cos )· / 2 •  =0.1, 0.2 Factor de reflectividad Algoritmo Particular II Leocadio Hontoria 5 de 5

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