Long-term stable operation and absolute frequency stabilization of a doubly resonant parametric oscillator

1998 ◽  
Vol 66 (6) ◽  
pp. 733-739 ◽  
Author(s):  
R. Al-Tahtamouni ◽  
K. Bencheikh ◽  
R. Storz ◽  
K. Schneider ◽  
M. Lang ◽  
...  
Keyword(s):  
Frequency Stabilization ◽  
Parametric Oscillator ◽  
Stable Operation ◽  
Absolute Frequency

Experimental Study on the Drying Performance of the High Temperature Heat Pump Dryer

2012 ◽  
Vol 550-553 ◽  
pp. 3219-3223
Author(s):  
Xing Wang Zhu ◽  
Chun Xia Hu ◽  
Zhi Min Guo ◽  
Yu Gui Su
Keyword(s):  
High Temperature ◽  
Heat Pump ◽  
External Environment ◽  
Stable Operation ◽  
Obvious Effect ◽  
Electromagnetic Valve ◽  
Exhaust Temperature ◽  
Temperature Heat ◽  
High Temperature Heat Pump

In this paper，a high temperature heat-pump dryer and a corresponding semi-enclosed test drying room for using the dryer are built up respectively. While the average dry bulb of the external environment is 25°C and the relative humidity is 55%, the performance of the dryer is obtained when the dryer is running continuously for five hours. The results show that: the electromagnetic valve-capillary institution has an obvious effect on the lower the dryer exhaust temperature. It makes the suction temperature of compressor dropped 10 °C~15 °C, which can reduce the exhaust temperature and prevent compressor’s overheating. When the exhaust temperature keep at 100~110 °C, it can not only guarantee the temperature of wind coming from the dryer is high, but also can make sure the drying system’s long-term stable operation.

scholarly journals Catalytic Micro Gas Sensor with Excellent Homogeneous Temperature Distribution and Low Power Consumption for Long-Term Stable Operation

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 927 ◽  
Author(s):  
Anmona Shabnam Pranti ◽  
Daniel Loof ◽  
Sebastian Kunz ◽  
Marcus Bäumer ◽  
Walter Lang
Keyword(s):  
Temperature Distribution ◽  
Low Power ◽  
Gas Sensor ◽  
Gas Flow ◽  
Pt Nanoparticles ◽  
Stable Operation ◽  
Catalytic Layer ◽  
Micro Gas Sensor ◽  
Homogeneous Temperature

This paper presents a long-term stable thermoelectric micro gas sensor with ligand linked Pt nanoparticles as catalyst. The sensor design gives an excellent homogeneous temperature distribution over the catalytic layer, an important factor for long-term stability. The sensor consumes very low power, 18 mW at 100 °C heater temperature. Another thermoresistive sensor is also fabricated with same material for comparative analysis. The thermoelectric sensor gives better temperature homogeneity and consumes 23% less power than thermoresistive sensor for same average temperature on the membrane. The sensor shows linear characteristics with temperature change and has significantly high Seebeck coefficient of 6.5 mV/K. The output of the sensor remains completely constant under 15,000 ppm continuous H2 gas flow for 24 h. No degradation of sensor signal for 24 h indicates no deactivation of catalytic layer over the time. The sensor is tested with 3 different amount of catalyst at 2 different operating temperatures under 6000 ppm and 15,000 ppm continuous H2 gas flow for 4 h. Sensor output is completely stable for 3 different amount of catalyst.

Long-Term Frequency Stabilization with Digital Servo System

2009 ◽  
Vol 36 (4) ◽  
pp. 804-808 ◽  
Author(s):  
姬中华 Ji Zhonghua ◽  
张冉冉 Zhang Ranran ◽  
马杰 Ma Jie ◽  
董磊 Dong Lei ◽  
赵延霆 Zhao Yanting ◽  
...  
Keyword(s):  
Servo System ◽  
Frequency Stabilization ◽  
Term Frequency

Long-Term Frequency Stabilization of Multi-Lasers Based on Wavemeter

2019 ◽  
Vol 46 (2) ◽  
pp. 0211004 ◽  
Author(s):  
钱源 Qian Yuan ◽  
梁世勇 Liang Shiyong ◽  
黄垚 Huang Yao ◽  
管桦 Guan Hua ◽  
高克林 Gao Kelin
Keyword(s):  
Frequency Stabilization ◽  
Term Frequency

Long Term Operation of a CW Doubly Resonant Optical Parametric Oscillator

1996 ◽  
Vol 35 (Part 1, No. 5A) ◽  
pp. 2690-2691 ◽  
Author(s):  
Takeshi Ikegami ◽  
Sergey Slyusarev ◽  
Shin-ichi Ohshima ◽  
Eiichi Sakuma
Keyword(s):  
Optical Parametric Oscillator ◽  
Parametric Oscillator ◽  
Term Operation ◽  
Optical Parametric ◽  
Resonant Optical Parametric Oscillator
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