多元醇NPG/PE和NPG/TAM二元体系贮热性能的实验研究

对新戊二醇,季戊四醇和三羟甲基氨基甲烷三种多元醇材料分别组成的ＮＰＧ／ＰＥ和ＮＰＧ／ＴＡＭ二元混合物作为固－固相变太阳能贮热材料的贮热性能进行了实验研究 。     

新戊二醇、季戊四醇其二元体系固—固相变的变温红外光谱研究

利用傅利叶变温红外光谱仪分别测定了新戊二醇（ＮＰＯＧ）、季戊四醇（ＰＥ）及其二元混合物的变温红外光谱。实验表明,多元醇分子中羟基吸收峰随温度升高而发生位移,它既能反映多元醇及其二元体系发生固－固相变的温度区间,又与转变热相对应,从而揭示了多元醇及其二元体系固－固相变贮热的机理。     

新戊二醇,季戊四醇及其二元体系固—固相变贮热的动力学研究

利用ＤＳＣ技术研究了新戊二醇（ＮＰＧ）、季戊四醇（ＰＥ）及其二元体系的固－固相变的动力学,运用Ｋｉｓｓｉｎｇｅｒ及Ｏｚａｗａ方法计算了固－固相变的表观活化能及反应级数,两种方法的结果是一致的。     

新戊二醇和三羟甲基氨基甲烷及其混合物的固-固相变动力学的研究

用ＤＳＣ技术研究新戊二醇（ＮＰＧ）、三羟甲基氨基甲烷（ＴＡＭ）及其混合物的固－固相变的动力学,运用Ｋｉｓｓｉｎｇｅｒ及Ｏｚａｗａ方法计算固－固相变的活化能及反应级数,两种方法的结果相符。通过实验数据分析,探讨了活化能随组成变化的规律。     

利用差示扫描量热法测定三羟甲基乙烷-新戊二醇二元体系的相图

利用差示扫描量热法（ＤＳＣ）测定了新戊二醇（ＮＰＧ）－三羟甲基乙烷（ＰＧ）二元体系的相图，并用变温红外（ＩＲ）技术对所测相图进行了进一步的验证。     

新戊二醇、三羟甲基甲胺及其二元体系相变贮热性能的研究

利用差式扫描量热法（ＤＳＣ）详细测试了多元醇新戊二醇（ＮＰＧ）、三羟甲基甲胺（ＴＡＭ）及其二元体系ＮＰＧ／ＴＡＭ的各种贮热性能。研究结果表明,ＮＰＧ／ＴＡＭ二元体系具备良好的贮热性能,是一类有前途的相变贮热材料。     

多元醇二元体系固-固相变动力学参数确定

多元醇固一固相变动力学的研究能对贮热利用提供理论依据。采用DSC技术研究了三羟甲基乙烷(PG)、季戊四醇(PE)和三羟甲基胺基甲烷(PG)及其PG/TAM、PE／TAM两个二元体系的固一固相变动力学。运用Kissinger及Ozawa方法计算了固一固相变的表观活化能及反应级数，两种方法的计算结果一致，并探讨了活化能与组成变化的规律。     

太阳能固—固相变贮热

本文评述了作为新型太阳能贮热材料的多元醇类（ＰＥ、ＰＧ、ＮＰＧ）及其二元体系的固－固相变贮热性能的研究情况。     

三羟甲基乙烷、新戊二醇及其二元体系相变动力学的DSC研究

用DSC技术研究了新戊二醇（NPG）,三羟甲基乙烷（PG）及其二元体系的固－固,固－液相变的动力学,运用Kissinger及Ozawa方法计算了相变过程的活化能及反应级数,两种方法计算结果一致,固－固相变温度和峰温与升温速度呈线性关系。     

多元醇二元体系固—固相变贮热的挥发性实验研究

本文报道了就新戊二醇和季戊四醇组成的二元体系固－固相变贮热材料的挥发性进行了实验研究的情况和结果。     

汽车排放控制和我国车用燃料的发展

世界各国都在致力于解决汽车领域的环境保护问题,我国也相应地制定了一些法规,为适应环保的要求,车用燃料的质量需要不断改进,一些代用燃料也正在兴起。     

PG6531燃气轮机的升级改造

介绍了大庆燃机电厂对GE公司生产的PG6531燃气轮机进行本体升级改造时的新技术应用情况、改造的效果等。     

Development and performance evaluation of a producer gas based system for hardening of steels

A producer gas (PG) based system for steel hardening, had been developed by the Institute. This developed PG based system consists of a batch type updraft gasifier, an air swirling type PG burner and a hardening furnace. In this developmental work, a local industry engaged in steel hardening was involved. At present, the industry is using a traditional coal based system. In addition to the dependence on conventional fuel, the existing process is labor intensive and creates environmental pollution. On the contrary, the PG based system offers better efficiency, process controllability and environmental acceptability. It accepts wide variety of dry biomass like wood/woody agricultural residues (Ipomoea) and woody saw mill wastes as feedstocks.The PG based hardening system has been installed at the Institute and operated successfully for a cumulative period of 50 h. Sun dried Subabool wood pieces of 20×20×40 mm size were used as fuels.The furnace attained a uniform temperature of 900 °C within 30 min. One batch load of 20 kg steel takes 2 h for hardening by consuming 15 kg of biomass. This paper outlines the developmental efforts and the progress made so far. Economic analysis of the developed PG based system has been also worked out.     

轻型燃气轮机LM6000PC与重型燃气轮机PG6581B研究与对比分析

目前在国际市场和国内市场,作为一种主要的发电方式的燃气轮机及其联合循环发电,在市场份额上不断扩大。为了优化在项目前期阶段对业主提出的技术建议,对同等级发电功率的轻型燃气轮机LM6000PC和重型燃气轮机PG6581B进行了对比分析,结合在国际市场上的实际工程经验,研究了轻型燃气轮机LM6000PC和重型燃气轮机PG6581B各自的优势及各自的适用范围。     

PG6581B燃气轮机构成燃煤联合循环系统的性能分析

介绍了由PG6581B燃气轮机构成的焦载热部分气化燃煤联合循环系统的结构和特点,并对PG6581B燃气轮机燃用中低热值煤气的性能进行了计算和分析。计算结果表明,燃用中低热值煤气后,PG6581B的功率与效率均有所下降,但在可接受的范围内。选一步分析后得出：降低煤气中CO2和N2等不可燃成分的含量,提高可燃部分中H2的含量可提高燃气轮机的性能。对该联合循环系统的初步计算表明,应用了PG6581B燃气轮机的焦载热部分气化燃煤联合循环系统的热效率可以达到42％以上。     

电感耦合等离子体原子发射光谱法测定铅酸蓄电池用PE型隔板中镍、钴元素的含量

PE隔板在高温下完全灼烧后用(1+4)稀硫酸溶液浸取残渣,采用电感耦合等离子体原子发射光谱法测定浸取液中Ni、Co元素含量。选择测定镍、钴的分析谱线分别为231.604、228.615 nm。按所选仪器工作条件进行光谱测定,并制作各元素的工作曲线。镍、钴的检出限(3 s)分别为0.004、0.002mg/L。对2个样品中的2种元素各测定6次,测定值的相对标准偏差在1.21%~5.86%之间。用标准加入法进行回收试验,测得回收率在96.1%~98.1%之间。     

PG6581B -L燃气轮机雾化空气系统常见故障分析及解决方案

雾化空气系统对燃气轮机机组至关重要,其直接影响机组的正常启动和运行.本文在燃气轮机机组实际运行和维护检修经验基础上,总结出PG6581B-L雾化空气系统常见的几种故障,对其进行详细分析,并提出合理有效的解决方案.     

Analysis of equilibrium CO2 solubility in aqueous APDA and its potential blends with AMP/MDEA for postcombustion CO2 capture

The utility of polyamine-based solvent-activators for the possible application in postcombustion CO₂ capture technology has drawn considerable attention recently owing to its higher loading capacity as well as superior kinetics. The current work involves a comprehensive experimental cum theoretical investigation on the equilibrium solubility of CO₂ pertaining to aqueous N-(3-aminopropyl)-1,3-propanediamine and its blends with N-methyldiethanolamine and 2-amino-2-methyl-1-propanol. The analysis was conducted within the operating temperature and CO₂ partial pressure range of 303.2-323.2 K and 2-200 kPa, respectively. Two different mathematical models based on nonrigorous approaches such as equilibrium based modified Kent-Eisenberg (KE) model and a multilayer feedforward neural network model have been developed to correlate the CO₂ solubility data over a wide range of experimental conditions. Both the model predictions are well-validated with the experimental results. The reaction scheme as well as the prevalence of important reaction products was further confirmed with qualitative ¹³C NMR as well as ATR-FTIR analysis. Apart from these some of the important thermally induced transport properties viz, density, viscosity, and surface tension of the aqueous single and blended systems were measured and correlated with various consistent empirical models such as Redlich-Kister and Grunberg-Nissan model while surface tension data are modeled using temperature-based multiple linear regression technique.     

Modeling poplar growth as a short rotation woody crop for biofuels in the Pacific Northwest

Predicting the economic viability and environmental sustainability of a biofuels industry based on intensively cultivated short rotation woody crops (SRWC) requires spatial predictions of growth and yield under various environmental conditions and across large regions. The Physiological Principles in Predicting Growth (3PG) model was modified to evaluate the growth and yield of coppiced poplar (Populus spp). This included an additional biomass partitioning method and developing a sub-model which takes into account the impact of coppicing on post harvest regeneration, extending the applicability of the 3PG model to coppice management regimes.The parameterized model was applied to the entire Pacific Northwest of the United States, using appropriate climate and soil input data. Results predict the yield of poplar cultivation at a spatial resolution of ≈64 km² throughout the ≈8,000,000 km² of the study region. Existing agricultural cultivation patterns were used to estimate regional water availability for irrigation, and for non-irrigated regions, land cover features including ownership, slope, soil salinity and water table depth where used to select areas with a real potential to support a SRWC plantation.Results can be integrated with other models that allow for optimizing crop selection and biorefinery site selection. Important results include; an updated 3PG model for coppiced SRWC plantings, estimates of biomass feedstock yields under different irrigation patterns and weather conditions, and estimates for feedstock availability when combined with crop adoption scenarios.