Study on a thermoacoustic cooling system to drive the fundamental resonance frequency by connecting a triggered tube

2006 ◽  
Vol 120 (5) ◽  
pp. 3338-3338
Author(s):  
Hideo Yoshida ◽  
Shin‐ichi Sakamoto ◽  
Yoshiaki Watanabe
Keyword(s):  
Resonance Frequency ◽  
Cooling System ◽  
Fundamental Resonance ◽  
Fundamental Resonance Frequency

An Improved Formula of Fundamental Resonance Frequency of a Layered Half-Space Model Used in H/V Ratio Technique

2016 ◽  
Vol 173 (8) ◽  
pp. 2803-2812 ◽  
Author(s):  
Tran Thanh Tuan ◽  
Pham Chi Vinh ◽  
Matthias Ohrnberger ◽  
Peter Malischewsky ◽  
Abdelkrim Aoudia
Keyword(s):  
Resonance Frequency ◽  
Half Space ◽  
Fundamental Resonance ◽  
Space Model ◽  
Fundamental Resonance Frequency ◽  
Layered Half Space

Effect of length on the fundamental resonance frequency of arterial models having radial dilatation

2000 ◽  
Vol 47 (3) ◽  
pp. 313-318 ◽  
Author(s):  
Yuh Ying Lin Wang ◽  
W.C. Lia ◽  
Hsin Hsiu ◽  
Ming-Yie Jan ◽  
Wei Kung Wang
Keyword(s):  
Resonance Frequency ◽  
Fundamental Resonance ◽  
Fundamental Resonance Frequency

scholarly journals Influence of Tuning Fork Resonance Properties on Quartz-Enhanced Photoacoustic Spectroscopy Performance

Sensors ◽  
2019 ◽  
Vol 19 (18) ◽  
pp. 3825 ◽  
Author(s):  
Huadan Zheng ◽  
Haoyang Lin ◽  
Lei Dong ◽  
Yihua Liu ◽  
Pietro Patimisco ◽  
...  
Keyword(s):  
Resonance Frequency ◽  
Quality Factor ◽  
Photoacoustic Spectroscopy ◽  
Electrical Resistance ◽  
Tuning Fork ◽  
Resonance Frequencies ◽  
Resonance Properties ◽  
Tuning Forks ◽  
Quartz Tuning Forks ◽  
Fundamental Resonance Frequency

A detailed investigation of the influence of quartz tuning forks (QTFs) resonance properties on the performance of quartz-enhanced photoacoustic spectroscopy (QEPAS) exploiting QTFs as acousto-electric transducers is reported. The performance of two commercial QTFs with the same resonance frequency (32.7 KHz) but different geometries and two custom QTFs with lower resonance frequencies (2.9 KHz and 7.2 KHz) were compared and discussed. The results demonstrated that the fundamental resonance frequency as well as the quality factor and the electrical resistance were strongly inter-dependent on the QTF prongs geometry. Even if the resonance frequency was reduced, the quality factor must be kept as high as possible and the electrical resistance as low as possible in order to guarantee high QEPAS performance.

scholarly journals Experimental study on resonance frequency of loop-tube-type thermoacoustic cooling system

2006 ◽  
Vol 27 (6) ◽  
pp. 361-365 ◽  
Author(s):  
Shin-ichi Sakamoto ◽  
Yoshiaki Watanabe
Keyword(s):  
Experimental Study ◽  
Resonance Frequency ◽  
Cooling System ◽  
Tube Type

A High Angle, Double Tilting Cold Stage for the AEI EM7

1974 ◽  
Vol 32 ◽  
pp. 450-451
Author(s):  
P.R. Swann ◽  
A.E. Lloyd
Keyword(s):  
Habit Plane ◽  
Temperature Control ◽  
Tilt Angle ◽  
Cooling System ◽  
Thermal Drift ◽  
High Angle ◽  
Cold Stage ◽  
High Degree ◽  
Better Than

Figure 1 shows the design of a specimen stage used for the in situ observation of phase transformations in the temperature range between ambient and −160°C. The design has the following features a high degree of specimen stability during tilting linear tilt actuation about two orthogonal axes for accurate control of tilt angle read-out high angle tilt range for stereo work and habit plane determination simple, robust construction temperature control of better than ±0.5°C minimum thermal drift and transmission of vibration from the cooling system.

A conduction-cooled stage for high-resolution Cryo-SEM

1992 ◽  
Vol 50 (2) ◽  
pp. 1282-1283
Author(s):  
John G. Sheehan
Keyword(s):  
High Resolution ◽  
Liquid Nitrogen ◽  
Mechanical Stability ◽  
Cooling System ◽  
Cold Trap ◽  
Nitrogen Gas ◽  
Particulate Suspensions ◽  
Advantages And Disadvantages ◽  
Convection Cooling ◽  
Styrene Butadiene

The goal is to examine with high resolution cryo-SEM aqueous particulate suspensions used in coatings for printable paper. A metal-coating chamber for cryo-preparation of such suspensions was described previously. Here, a new conduction-cooling system for the stage and cold-trap in an SEM specimen chamber is described. Its advantages and disadvantages are compared to a convection-cooling system made by Hexland (model CT1000A) and its mechanical stability is demonstrated by examining a sample of styrene-butadiene latex.In recent high resolution cryo-SEM, some stages are cooled by conduction, others by convection. In the latter, heat is convected from the specimen stage by cold nitrogen gas from a liquid-nitrogen cooled evaporative heat exchanger. The advantage is the fast cooling: the Hexland CT1000A cools the stage from ambient temperature to 88 K in about 20 min. However it consumes huge amounts of liquid-nitrogen and nitrogen gas: about 1 ℓ/h of liquid-nitrogen and 400 gm/h of nitrogen gas. Its liquid-nitrogen vessel must be re-filled at least every 40 min.

Sign in / Sign up

Export Citation Format

Share Document