The results showed that the total heat transfer coefficient of petal - shaped finned tube oil - cooler with helical baffles was 4 ~ 5 times as large as that of smooth tube oil - cooler with segmental baffles at the same oil pressure drop 结果表明，在相同油压降下，螺旋隔板花瓣管油冷却器的总传热系数是弓形隔板光滑管油冷却器的4 ~ 5倍。
With an example , analyses the effect of total heat exchanger area on system performance and the optimizing results under different conditions and discusses the impact of exchanger type on the minimum exchanger area 结合实际算例，分析了换热器总传热面积对系统特性的影响以及不同设计工况下的优化结果，同时讨论了换热器种类对最小总传热面积的影响。
The thesis introduces the charging method of household heat - metering and academic calculating formulas of all the abstracted coefficient of the communal heating load calculation from the total heating load calculation in household heat - metering and charging in multiplayer buildings 文中介绍了按户热计量的收费方法及多层住宅建筑热计量耗热量中公共耗热量的提取系数的理论计算公式。
Net radiation absorbed by sea surface is balanced most by the process of latent heat transport , accounting for 50 of total heat , and the rest part is conducted to deep water and transported as sensible heat to air , accounting for 26 and 24 of total heat individually 海面吸收的净辐射主要消耗于潜热输送过程，占净辐射的50 ，其余热量传向水体深层和用于感热输送，分别占净辐射的26和24 。
The heat transfer and flow resistance performance of petal - shaped finned tube oil - cooler with helical baffles was studied , and compared the total heat transfer coefficient of petal - shaped fimed tube oil - cooler with helical baffles with that of smooth tube oil - cooler with segmental baffles 摘要研究了螺旋隔板花瓣管水冷壳管式油冷却器的传热和流阻性能，并与弓形隔板光滑管水冷壳管式油冷却器进行了性能对比。
By using the academic calculating formulas of each factors , we can analyze and calculate the no . 23 # residence building of abstracted coefficient that is measured by ledge in baihua small region . finding the abrration between practicable heat test and theory calculation , sequentially the communal heating load calculation is abstracted from the total heating load calculation of the building 应用各个系数的理论计算公式，对百花小区23 #住宅楼公共耗热量的各个提取系数进行分析计算。找出实际测试与理论计算两者之间的误差，提取出公共耗热量。
Automatic computation and modification of the dimension , the number of total heat tubes and rows , the body line of layout areas and other results involved . 4 . the programming of various functional models and their communication , coded with visual lisp and vba and based on the opening structure of autocad and its entity database 标示最大布管边界，自动标注尺寸，自动修改并输出布管参数及结果，包括：自动计算并输出每一管程的管根数、起始排数、终止排数，自动计算并输出每排热管根数与拉杆根数。
Performs the optimization with finite time thermodynamic analysis and obtains the allocation of heat exchanger area for double - stage coupling heat pump systems that maximize the objective function , and the analytical expressions about the optimal temperature of working fluids , the minimum total heat exchanger area and the minimum power input 摘要应用有限时间热力学理论对双级耦合热泵供暖系统换热器面积进行优化，得到了系统供热系数最优时的最佳传热面积分配，最佳工质工作温度、最小总传热面积以及最小输入功率的解析式。
A new method measuring the toted heat transfer coefficient of refrigeration unit is presented on the base of theoretical analysis and verifying experiments , then the total heat transfer coefficient of refrigeration unit can be calculated out through the experiment data . an automatic measuring and controlling system for refrigerated containers is also presented 最后，深入分析了冷藏集装箱热工性能实验的检测标准和实验方法，并利用研制的温度数据采集系统对冷藏集装箱进行了气密性实验、漏热实验和制冷机组性能实验并对结果进行了分析。
Using lithium bromide aqueous solution as liquid desiccant , adopting the total heat transfer rate and enthalpy efficiency to describe the combined heat and mass transfer performance and the moisture removal rate and regenerative efficiency to describe the mass transfer performance of the regenerator , explores the effect of air and desiccant inlet parameters on the regenerator performance by experiment , and compares the result obtained with those of other counter - flow configurations previously published 以溴化锂溶液为除湿剂，采用总换热量、全热效率描述再生器的热质交换总体效果，采用再生量、再生效率描述传质效果，实验测试了溶液和空气的进口参数对再生器性能的影响，并与逆流再生器的实验结果进行了比较。
