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Instrumentation and Controls
Published in Siddhartha Mukherjee, Process Engineering and Plant Design, 2021
Sight Glass: The sight glass consists of a graduated tube of toughened glass which is connected to the bottom of the process vessel (viz., column bottom, reflux drum, vapor-liquid separator, etc.), for which the level indication is required. The instrument, although a simple measuring device, is a common sight in chemical process industries. Figure 11.4 is a typical illustration of a sight glass.
Filtration efficiency of woven metal fiber filter for aerosol generated by plasma torch metal cutting
Published in Aerosol Science and Technology, 2023
Min-Ho Lee, Hee Kwon Ku, Hyunjin Boo, Jonghyeon Kim, Geundong Song, Deokhee Lee, Kaphyun Yoo, Byung Gi Park
The aerosol generation system consists of an aerosol chamber with sufficient accommodating space, a movable table for fixing and moving the metal specimen, and a plasma torch (Lee et al. 2020b). The aerosol chamber has a size of 1,300 mm width, 1,000 mm length, and 660 mm high, and is made of stainless steel to prevent leakage of the generated aerosol. The aerosol chamber has two ports on opposite sides of each other, one for supply of clean air and the other for venting of aerosol-contaminated air. The port for clean air supply is equipped with a HEPA filter to ensure a continuous flow of clean air into the aerosol chamber. The port for venting of aerosol-contaminated air was connected to the sampling pipe for aerosol measurement. A self-fabricated blower fan module was connected to the end of the sampling pipe to transfer aerosol particles generated during metal cutting into the metal filter. A sight glass was installed in the front of the aerosol chamber to ensure visibility of the cutting process.
Experimental and Modeling Study of Peanut Drying in a Solar Dryer with a Novel Type of a Drying Chamber
Published in Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2022
Ertaç Hürdoğan, Kamil Neyfel Çerçi, Dogan Burak Saydam, Coskun Ozalp
In the system, the case of the air solar collector with a size of 190×90×10 cm (1.70 m2) is made of plexiglass with its bottom and side surfaces covered with glass wool insulation material to reduce heat losses. For the circulation of air, a speed controlled radial blower with 70 W and 650 m3/ h (max.) is used. The air velocity at the inlet of the drying chamber is set to a constant value of 1 m/s. To prevent air leaks, all the connection points and spots where air passes through are closed using silicon. Possible heat losses are prevented by covering the drying chamber with aluminum coated glass wool. The chamber also contains a sight glass made of transparent plastic material for the monitoring of the products. The products to be dried are placed inside the drying chamber with the help of a tray. The tray of approximately 0.5 m2 is made of aluminum perforated wire to allow the air passage. After the products are placed in the drying chamber by means of the tray through the product inlet, the tray is connected to the electronic balance with the hanger system inside the chamber.
Experimental investigations on the performance of a vapor compression refrigeration system under the influence of magnetic field generated using magnetic pair and Halbach array
Published in Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2022
Rahul Deshmukh, Dinesh Zanwar, Sandeep Joshi, Shyamal Chakrabarty
To provide a magnetic treatment, four magnetizers of each magnetic configuration were employed in this study. As the electrical conductivity of liquid refrigerant is higher than that of vapor, the magnetizers were placed on the condenser liquid line of a system. The liquid state of the refrigerant was confirmed by observation through the sight glass. Flow meters were used to measure the flow rates of water in the condenser and evaporator shells. A rotameter was utilized to measure the flow rate of refrigerant in the primary loop. Seven RTD (resistant temperature detector) sensors were employed to measure the temperature at various positions in the primary and secondary loops as shown in Figure 6a. The magnetic field strength was measured using a digital gauss meter. The compressor inlet and outlet pressure were measured using pressure gauges. The energy meter was used to measure the electricity consumption rate of the compressor.