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ENGINEERING CALCULATORS

Generation power & energy estimate calculator

Engineering calculators (Beta)

Estimate output from shaft power, water, wind or irradiance and a specified duration.

Inputs

Choose units and enter numbers. Full-width digits and fractions such as 1/8 or 1 3/8 are accepted. Changing a unit converts the entered value.

Results

Reference calculation only. Results do not certify suitability for an actual design or its safety.

Diagram

Inputs: select a blue symbol to edit Results: red-orange values and lines

Formula and applicability

shaft P=Tωη; hydro P=ρgQHη; wind P=ρAv³Cpη/2; PV P=GAη; E=Pt

Displayed values are rounded. Diagrams illustrate the calculation conditions. Initial material and fluid properties are examples; replace them with values for the actual material, temperature and conditions.

Reference
Using this information as a reference

Equations assume particular loads, supports and deformation ranges. Check inputs, units and the applicability of each equation. Diagrams explain conditions; they are not manufacturing drawings or proof of safety.

Material values are typical values or reference ranges, not certified product properties or ready-to-use design allowables. They vary with standards, product form, dimensions, temper and temperature. Check the specifications and inspection certificates for the actual product.

Displayed safety factors and checks apply only to the supplied inputs and calculation model. They do not automatically establish the safety of a complete design, including code compliance, service life, fatigue or joints. For actual design, manufacture and use, separately verify applicable regulations and standards, product specifications, and the necessary tests and engineering review.

この計算で求められること

軸動力・水・風・日射から理論出力と指定時間の電力量を概算します。

入力・結果・適用条件を確認する

選択した形状・計算方法により、使う項目は変わります。実際の計算は上の図と入力欄で行えます。

主な入力

  • エネルギー源 (—)
  • 軸トルク T (N·m / N·mm / mN·m)
  • 回転数 (rpm / rad/s / °/s)
  • 水の流量 Q (L/min / m³/h / m³/s)
  • 有効落差 H (m / mm / ft)
  • 流体密度 ρ (kg/m³ / g/cm³ / g/L)
  • 風速 v (m/s / km/h / mm/s)
  • 受風面積・パネル面積 A (m² / cm² / mm²)
  • 風車のパワー係数 Cp (—)
  • パネル面の日射強度 (W/m²)
  • 総合変換効率 η (% / fraction / ‰)
  • その条件の継続時間 (s / min / µs)

得られる結果

  • 入力エネルギーの動力 (W)
  • 概算電気出力 (W)
  • 指定時間の電力量 (Wh)

計算式の概要

shaft P=Tωη; hydro P=ρgQHη; wind P=ρAv³Cpη/2; PV P=GAη; E=Pt

定常条件の概算です。効率は選択したエネルギー源に合う総合値を入力。風力はCpと発電系効率を分けます。年発電量、実際の気象・温度・負荷特性・蓄電・系統連系は含みません。

現在選択中の方法には、操作欄の「計算式・適用条件」を使ってください。参考計算であり、設計全体の安全性を保証するものではありません。

関連する計算

What this calculator does

Estimate output from shaft power, water, wind or irradiance and a specified duration.

Inputs, outputs and applicability

The selected model determines which of these inputs and outputs apply. Use the working diagram and input panel above to calculate.

Inputs

  • Energy source (—)
  • Shaft torque T (N·m / N·mm / mN·m)
  • Shaft speed (rpm / rad/s / °/s)
  • Water flow Q (L/min / m³/h / m³/s)
  • Effective head H (m / mm / ft)
  • Fluid density ρ (kg/m³ / g/cm³ / g/L)
  • Wind speed v (m/s / km/h / mm/s)
  • Rotor swept / panel area A (m² / cm² / mm²)
  • Wind rotor power coefficient Cp (—)
  • Irradiance on panel plane (W/m²)
  • Combined conversion efficiency η (% / fraction / ‰)
  • Duration at stated conditions (s / min / µs)

Calculated results

  • Available input power (W)
  • Estimated electrical output (W)
  • Energy over stated duration (Wh)

Formula overview

shaft P=Tωη; hydro P=ρgQHη; wind P=ρAv³Cpη/2; PV P=GAη; E=Pt

Steady-condition estimate. Enter combined efficiency appropriate to the source; wind uses separate Cp and generator efficiency. Annual yield, weather/temperature/load variation, storage and grid interconnection are excluded.

The displayed formula and conditions in the working panel apply to the currently selected model. Reference calculation only; it does not certify a complete design.

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