Challenging Assignment - "The Future Energy Engineer"
你作为一家绿色科技公司的研发工程师，需要完成一份关于“高效、安全、便携式自加热技术”的可行性报告。Your task is to act as an R&D engineer for a green tech company and produce a feasibility report on "Efficient, Safe, and Portable Self-Heating Technology."
技术背景与研究 (Technical Background & Research)
Research at least two different self-heating chemical reactions (e.g., Quicklime (CaO) with water, or the oxidation of iron powder with air). Compare their pros and cons from a thermochemical perspective (ΔH, heat output efficiency, reaction rate, safety, cost, environmental impact of products).
调研至少两种不同的自发热化学反应（例如：生石灰（CaO）与水，或铁粉与空气的氧化反应）。从热化学角度（ΔH）比较它们的优劣（如：产热效率、反应速度、安全性、成本、产物环保性）。
设计与计算 (Design & Calculation)
a. Conceptual Design: For your chosen optimal reaction, design a simple sketch of a self-heating can. Label the reactant chambers, activation mechanism, and heating area.
概念设计: 为你选择的最佳反应，设计一个简易的自加热罐结构草图。标明反应物仓、激活机制和加热区域。
b. Energy Budget: Your design goal is to heat 100 mL of water from 25°C to 70°C. Calculate the total heat required (in Joules). The specific heat capacity of water is 4.184 J/g°C.
能量预算: 你的设计目标是加热100毫升水从25°C到70°C。请计算所需的总热量（焦耳）。已知水的比热容为4.184 J/g°C。
c. Stoichiometry: Based on the thermochemical equation of your chosen reaction (e.g., CaO + H₂O → Ca(OH)₂, ΔH = -82 kJ/mol), calculate how many grams of the main reactant are needed to provide sufficient heat. (Advanced Prompt: Account for thermal efficiency; assume only 60% of the heat produced is absorbed by the water.)
化学计量: 根据你选择的反应的热化学方程式（例如 CaO + H₂O → Ca(OH)₂, ΔH = -82 kJ/mol），计算需要多少克主要反应物才能提供足够的热量。（高阶提示: 考虑热效率，假设只有60%的热量被水吸收。）
批判性分析与伦理思考 (Critical Analysis & Ethical Consideration)
What are the main advantages and disadvantages of your design? From a life-cycle assessment perspective (raw material, use, disposal), analyze the potential environmental impact of your product. Propose one improvement or waste management suggestion.
你的设计方案主要优缺点是什么？从生命周期评估（原料、使用、废弃）的角度，分析你的产品可能带来的环境影响。提出一个改进方向或废物处理建议。
创意延伸（可选）(Creative Extension - Optional)
Brainstorm an innovative application scenario for your self-heating technology (beyond food warming) and explain its social or economic value.
构思一个你的自加热技术的创新应用场景（不仅限于食品加热），并说明其社会或经济价值。
提交形式/Deliverable: 一份书面报告（约800-1000字）或一个5分钟的演讲视频。 A written report (approx. 800-1000 words) OR a 5-minute presentation video.
