預熱余量 的英文怎麼說
中文拼音 [yùrèyúliáng]
預熱余量
英文
preheating allowance-
The afterheat, which is collected by recovery devices, in winter can be used as the low level thermal source of heat pump, and in summer can preheat feed water, thus equivalent an economizer. because energy flows in the system so reasonably that energy is used to the most, therefore, its energy conservation effect is significant, and the operating expenditure declines consequently. the sewage can be reused after due treatment, thua it has a certain social and ecological benefit, too
本研究中選用分離式熱管裝置提供洗浴用水，利用水源熱泵裝置，一機兩用，進行空間供熱和製冷，並通過余熱回收器對系統內的余熱進行回收，冬季可作為水源熱泵的低位熱源，夏季可對鍋爐給水進行預熱，起到「省煤器」的作用。這樣實現系統內的能量合理流動，從而達到節能的目的，同時洗浴污水經適當的處理后可以回用，因而還具有一定的社會和生態效益。Thermal residual stresses in short fiber reinforced metal matrix composites ( sfrmmc ) can reach a high level and have a significant effect on the mechanical properties of composites. in this paper, three dimensional elastoplastic finite element analyses were used to study the thermal residual stresses in sfrmmc and its effect systematically. with the interfacial property, fiber ' s orientation and reciprocity of fibers considered, the thermal residual stresses in - al2o3 / al - 5. 5mg, - al2o3 / al - 5. 5zn and - al2o3 / al - 12si alloy composites were calculated and analysed
本文在分析計算中綜合考慮了界面性能、纖維位向以及纖維間相互作用的影響，分別採用單纖維模型、雙纖維模型和斜向纖維模型，對- al _ 2o _ 3 al - 5 . 5mg 、 - al _ 2o _ 3 al - 5 . 5zn和- al _ 2o _ 3 al - 12si三種al合金基復合材料的熱殘余應力進行了計算和分析；對存在熱殘余應力時復合材料的應力?應變曲線進行了模擬；還基於能量等效原理的有限元方法，考慮了熱殘余應力及纖維位向的影響，推導了短纖維增強金屬基復合材料彈性模量的預測公式。
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