查询词典 water saving

This thesis analyzes the types and art trait of solar-assisted heat pump water heater, the development trend of direct expansion solar-assisted heat pump water heater, makes a summary of these research results from six aspects. On the basis of these works and from the point of view of receiving optimum solar radiation , the thesis develops a novel design model of direct expansion solar-assisted heat pump water heater with a truncated cone collector/evaporator, theoretically analyzes the heat that the system can absorb, compares its ability with other two types of cylinder and flat plate ones, and calculates COP and EER with computer aids. The results show that a truncated cone direct expansion solar-assisted heat pump water heater can absorb not only more solar energy but heat energy in air. It takes on favorable thermal performance. Under the average day in February which is of the worst weather throughout the year in Kunming, the COP is about 4. 2, EER is about 2.9 . The heat absorbed by the system are more than those of the other systems. The system is very great in terms of saving

本文分析研究了太阳能热泵热水系统的分类及技术特点，直膨式太阳能热泵技术国内外发展趋势，从六个方面对直膨式太阳能热泵热水系统的研究进行了归纳总结；在此基础之上，从太阳辐射的最佳接收考虑，提出了集热器／蒸发器为圆台侧面的圆台型直膨式太阳能热泵热水器的设计模型，理论上分析了这种热水系统所接收的太阳辐射和得热量，并与圆柱型、平板型的直膨式太阳能热泵热水系统进行对比分析，通过计算机辅助模拟计算出：系统不但可以有效地吸收太阳能，还能有效地吸收空气中的热量，具有良好的热性能；在昆明，以2月为代表的冬季，其太阳辐照较低，系统的制热系数COP值也能达到4.2，效能比EER值为2.9；系统的得热量高出圆柱型、平板型的直膨式太阳能热泵热水系统，节能效果明显。

In addition, there is a saving water closet is left in tanks on location with water, can be used to wash, convenience, and the water will be used for flushing water inflow that is suitable for environmental awareness and conservation, will be estimated to endure a smell unpleasant odour.

另外，还有一种节能坐厕，就是在水箱靠内侧的位置装有水龙头，方便后可用来洗手，而所用的水会流入水箱用作冲厕，即适合现在环保意识，又节约，可估计要忍受一会难闻的气味。

Industrial energy saving : motor system, power equipment, variable frequency speed regulation technologies, exploit of afterheat and afterpressure, energy saving coal-fired industrial boilers, steam recycling, condensed water recovery, regenerative combustion technologies, etc.

工业节能：电机系统、动力设备、变频调速技术、余热余压利用、工业燃煤锅炉节能、蒸汽回收、凝结水回收、蓄热式燃烧技术等。

It is reported that in china irrigative water use efficiency is only 0.4 ,and that water use efficiency of crops is 1 kg/m3; and is only half of developed country, thus it can be seen that the key of saving agricultural use water is to how to increase crops use water efficiency .

我国灌溉水利用系数仅为0.4，农作物水分利用效率仅为1kg／m~3，是发达国家的一半，由此可见发展节水农业的关键是提高农作物的水分利用效率。

The results show that the optimal parameters of esterification are as follows: 4% of SO42-/ZrO2, molar ratio of methanol to litsea cubeba kernel oil 101, 68 ℃ of reaction temperature and 4 h of reaction time, the acid value decreases to 2.52 mg/g. Compared with the traditional acidic-catalyzed method, this method has the advantages of no acid proof equipment, easy to recycle catalyst and no acidic waste water emission. The optimal parameters of transesterification are as follows: 25 ℃ of reaction temperature, 0.5% of hexadecyl-trimethyl-ammonium bromide, 1% of NaOH, molar ratio of methanol to the oil 61 and 15 min of reaction time. The ester exchanging rate is 97.6%. This method adopts phase transfer catalyst and produces industry prospect, which has many advantages such as energy-saving and time-saving under room temperature.

研究结果表明，固体酸SO42-/ZrO2催化酯化反应的最佳条件为：油重4%的SO42-/ZrO2，醇油摩尔比为101，温度为68 ℃，反应时间为4 h，原油酸值降到2.52 mg/g；该法相对浓硫酸催化酯化法具有不需耐酸设备、催化剂易回收、无废水排放等优点；相转移催化酯交换反应的最佳条件为：温度为 25 ℃，0.5%的十六烷基三甲基溴化铵，油重1%的NaOH，醇油摩尔比为61，反应15 min，原油酯交换率达到97.6%；采用相转移催化技术，反应在常温下进行，大大减少了能耗，缩短了反应时间，具有的产业化前景。

The saving-water effect of Radish and Cabbage under PFM and appropriate irrigation,and the drought-resisting of radish seedling which seed was soaked by CaCl_2 were systematicly reseached by field observation and the experiment in door.The main results were summaried as follows:The soil temperature of 0~20cm cultivated layer was increased 3-4.5℃ in early growth period was only 1℃ in late growth period by PFM;there was more water saved up to 20.84mm in 0~60cm soil layer by PFM than no PFM in the early growth period of Radish;the yield and water use efficiency of Radish in L4 were exceeded respectively 10.1% and 21.9% of that contrast, the yield and water use efficiency of Cabbage in G4 were exceeded respectively 8.7% and 26.58% of that contrast, under PFM and appropriate irrigation.

主要研究结果如下：地膜覆盖在植株生长前期耕作层平均可增温3～4.5℃，在生长后期增温幅度减小，仅有1℃左右；地膜覆盖在植株生长前期可有效的保持土壤水分，在萝卜生长前期，使0～60cm土层内多储水20.84mm；在覆膜不灌水充分利用自然降雨的条件下生产萝卜，可比裸地正常灌水萝卜增产10.1%，水分利用效率提高21.9%；覆膜只浇一水生产甘蓝，可比裸地正常灌水生产甘蓝增产8.7%，水分利用效率提高26.58%。

Main products: air positive pressure breathing apparatus, fire air-breathing apparatus, oxygen breathing apparatus, air pumps, fire pumps, long pipe respirators, escape respirators, bubble guns, life jackets Lights, ring lights, raft lights, oil and water separator, protective clothing, thermal insulation suits, anti-chemical warfare suits, insulated clothing, rescue suits, life jackets, fire-fighting equipment, file mice, show-lights, the release, of 10 minutes, gongs,, Fog bell, life-saving floating cable, firemen and equipment, fire ax, fire-resistant rope, fire boots, helmets, Ruanti, horn, pyrotechnic signals, throw rope, throw rope equipment, sacrificial anode, life-saving fire equipment company from France international BVQI Quality system certification of ISO9001: 2000 quality management system.

主要产品有：正压式空气呼吸器、消防空气呼吸器、氧气呼吸器、充气泵、消防泵、长管呼吸器、逃生呼吸器、泡沫枪，救生衣灯，圈灯，筏灯，油水分离器，防护服，保温服，防化服，隔热服，救生服，救生衣，灭火器材，档鼠器，示位灯，释放器，号钟，号锣，雾钟，救生浮索，消防员装备，消防斧，耐火绳，消防靴，头盔，软梯，号角，烟火信号，抛绳器，抛绳设备，牺牲阳极，救生消防器材公司通过由法国BVQI国际质量体系认证的ISO9001：2000质量管理体系。

Currently committed to the development of the project are: 1, and highly efficient energy-saving wall, floor-small gas heating, hot water shower boiler 2, a heat recovery function of refrigeration, heating gas integrated air-conditioning unit 3, light Hydrocarbon gas technology 4, four seasons with the application of solar gas Technology 5, refrigeration - Gas - Solar - floor heating system optimization of energy-saving technology 6, the vacuum system superconducting Hot technology Over the years, we in a "customer first" principle, the user would like to think, urgent needs of users and constant innovation, and actively explore.

目前致力开发的项目有： 1、高效节能壁挂、落地式小型燃气采暖、淋浴热水锅炉 2、具有热回收功能的制冷、采暖一体化燃气空调机组 3、轻烃燃气技术 4、可四季应用的太阳能与沼气配套技术 5、制冷—燃气—太阳能—地板采暖的系统优化节能技术 6、真空超导制热技术多年以来，我们本着&用户至上&的原则，想用户之所想，急用户之所需，不断创新，积极探索。

Based on common technology of stove, the authoor used energy-saving techniques such as return air wall,air return way, Gasification chamber, secondary air, hear water box, and insulation measures, which effectively improved thermal efficiency of the large stove, and energy-saving was prominent.

作者在一般炉灶的基础上，采取了如砌上回风墙、回风道、汽化室，增设二次通风管、热水箱，加强绝热等等结构改造的节能技术，使大型炉灶热效率大幅提高，省能显著。

Saving water is not just for saving money, but also protecting natural resources on earth.

节约水不仅是节约钱的问题，而是我们在保护地球资源，也是保护人类自己。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。