Analysis the character of hydrodynamic calculation for natural circulation of industrial boiler and give the recommendation of calculation method for simple and complex circulation circuit.
分析工业锅炉自然循环的水动力计算特点，对简单及复杂循环回路的计算方法提出建议。
Based on the monostable circuit, using the IC NE555, a kind of hot water circulation automatic heat preservation system was designed.
利用时基icNE555接成的单稳态电路，设计了一种热水循环自动保温系统。
The paper introduces the circuit design and its function used for water supply of residential zone by adopting TD2100 converter to control four pumpers with circulation soft start.
介绍了利用TD 2 10 0变频器控制四台泵循环软起动，实现小区供水的电路设计及控制功能。
Morever, new technolo-gies such as slurry-recycling method and semi-closed circuit water circulation for cooling sys-tem were adopted reducing water consumption greatly.
此外，创造了回浆法和冷却水系统的半封闭式循环用水等新工艺，大大节约了用水量。
Because of being subjected to the different conditions, coal slurry water processing technology of Xinghua coal Preparation Plant affects closed-circuit circulation of wash water.
由于受不同条件的制约，杏花选煤厂煤泥水处理工艺影响了洗水的闭路循环。
The practical application has shown that the method is simple, can obtain good results and help to realize clear water wash coal and closed circuit the circulation of washing water.
生产应用表明，该方法简单，处理效果好，可满足洗水闭路循环清水洗煤的要求。
Do not satisfy the requirements of particle size by belt conveyor regurgitation feeding stones to impact breaker broken again, forming closed-circuit circulation many times.
不满足粒度要求的石子由胶带输送机返料送到反击式破碎机进行再次破碎，形成闭路多次循环。
Besides the mainstream, there are still some secondary flow phenomena, such as short-circuit flow, vertical eddy and eccentric circulation vortex.
旋风除尘器内除主流外还存在着二次流现象，主要有短路流、纵向涡流、偏心环流等。
All upper clear water that have been handled can be used to wash coal, which realizes to closed circuit the circulation of washing water.
该方法简单，处理效果好，处理后上清水完全回用于洗煤，实现了洗水闭路循环。
The thermal transfer medium is delivered to the circuit by means of a circulation pump via the heater unit and through the consumer units.
载热介质由循环泵传送，通过加热器再到消耗器进行循环。
The utility model provides a food sterilizing cabinet with air wet removing, which is mainly composed of a control circuit and an air closed-circuit circulation system.
本实用新型提供了一种空气去湿食品消毒柜，它主要由控制电路和空气闭路循环系统组成。
The utility model provides a food sterilizing cabinet with air wet removing, which is mainly composed of a control circuit and an air closed-circuit circulation system.
本实用新型提供了一种空气去湿食品消毒柜，它主要由控制电路和空气闭路循环系统组成。
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