Digital CEA Utilities

CEA Tool Suite

作者:方煒,臺灣大學生物機電工程學系名譽教授 | 網頁實作協作:ChatGPT 5.4 與 Codex
Developed by Wei Fang, Professor Emeritus, Department of Bio-Industrial Mechatronics Engineering, National Taiwan University | Web implementation assisted by ChatGPT 5.4 and Codex

這個入口頁將七個工具整合為同一套視覺系統與導覽路徑,並統一 toolbar、段落節奏與 credit 呈現。

This home page groups seven tools into one shared visual system: the VPD & AHD calculator, the Tr Calculator, the Tr optimizer, the Gs or VPD vs TE tool, the Pn simulator, the PFAL Simulator, and the ET models tool.

Version Notes

版本說明

初版:2018 千葉大學

日本千葉大學開發的 PFAL E-learning 軟體(Windows EXE file)。

第二版:2021/10 臺灣大學 方煒

基本架構類似初版,改為 xlsx 版本,主要有五大修改內容。

第一、千葉大學版本假設葉溫等於氣溫,xlsx 版本增加葉溫輸入功能,允許空氣溫度與葉溫不同時的計算;計算蒸散時使用的 VDD,以葉片內與空氣的水汽密度差為準,而不是以飽和空氣與空氣的水汽密度差為基準。

第二、人工光源改為使用 LED,並更改燈光配置與能耗計算方式。

第三、增加全廠栽培株數的計算。

第四、增加蒸散效率與 LAI 的計算。

第五、增加燈光、空調、二氧化碳成本的計算與成本占比的比較。

網路版:2026/04 臺灣大學 方煒

延續 xlsx 版本內容,由 ChatGPT 與 Codex 協助轉換為網路版。

Tool 01

VPD & AHD / 蒸汽壓差與飽差

適合大氣壓力、空氣蒸汽壓差、飽差、密度與比容的快速查算。

Calculates pressure, VPD, AHD, density, and specific volume with reference tables and chart views.

  • Includes formula references and chart-based comparison
  • Bilingual interface with workbook notes and comparison visuals

Tool 02

Tr Calculator / 蒸散計算器

專門用來計算蒸散速率與葉片氣孔阻力及邊界層阻力。

Standalone transpiration calculator for transpiration rate, leaf stomatal resistance, and boundary-layer resistance.

  • Calculates Tr, El, Ea, Rlv, Rvs, Rvc, and Rav, with variable definitions listed in the workbook.
  • The equations used to derive these parameters are also documented in the workbook.

Tool 03

Tr optimizer / 蒸散優化

針對 PFAL 蒸散相關情境,比較基準與優化後設定的蒸散、水分移除、潛熱負荷與電費。

Compares baseline and optimized PFAL settings for transpiration, water loss, latent load, and electricity cost.

  • Includes bilingual notes, live formulas, and scenario comparison
  • Uses the same shared toolbar and suite navigation as the other tools

Tool 04

Gs or VPD vs TE / 導度或 蒸汽壓差 vs 蒸散效率

依據氣孔導度 (Gs) 或 蒸汽壓差 (VPD) 估算光合作用、蒸散速率與蒸散效率。

Estimates photosynthetic rate, transpiration rate, and transpiration efficiency from stomatal conductance or VPD workbook equations.

  • Includes workbook notes, formulas, and interactive response charts
  • Supports worksheet switching inside one consistent page structure

Tool 05

Pn simulator / 光合作用模擬

聚焦 Pn_SimulatorPn_24 h_Simulation 兩張工作表,提供單點與 24 小時的光合作用模擬。

Focuses on the Pn_Simulator and Pn_24 h_Simulation worksheets for single-point and 24-hour photosynthesis simulation.

  • Includes Workbook Notes, a Pn simulator mode, and a 24h simulation mode
  • Summarizes hourly Pn and Tr with interactive tables, KPI cards, and charts

Tool 06

PFAL Simulator / 植物工場模擬

整合 CO2、水分、能量與整體模擬四張工作表,對應植物工場房間尺度的物質與能量平衡。

Integrates four worksheets for CO2 balance, water balance, energy balance, and whole-PFAL simulation.

  • Includes Workbook Notes and Interactive Calculator modes for all four sheets
  • Summarizes room-scale CO2, water, energy, and photosynthesis outputs in one tool

Tool 07

ET models / 蒸散模式

依據上傳的 MATLAB 程式,比較 Penman、Penman-Monteith、Fynn、Stanghellini 與 Fang 等 8 種蒸散模式。

Compares eight evapotranspiration models converted from the uploaded MATLAB program, including Penman, Penman-Monteith, Fynn, Stanghellini, and Fang formulations.

  • Includes workbook notes for atmospheric derivation and model equations
  • Compares ET rate and latent heat flux in one interactive page