Rotámetros y la Producción Solar de Obleas de Silicón

Introduction

rotameter1

One of the major prohibitive factors for expanding solar power in the market place is the high cost. The primary cost drivers in solar cell marketing are materials and manufacturing processes. Most solar cells in use today use silicon as the semiconductor that enables the photoelectric effect within the solar cell. Silicon is abundant but also expensive and in high demand as the solar and electronics industries compete for global supplies. There is now a cost effective process in use to extract the pure silicon needed for solar cells using less energy and reduced cost. This process is called the Fluidized Bed Reactor.

 

 

 

Application 

rotameter2In the Fluidized Bed Reactor, a raw silicon ore is introduced in a gaseous state. Large amounts of preheated hydrogen or helium are introduced creating a reaction that causes the pure silicon to be released and captured on seed particles that grow to become large super pure silicon spheres. Because of variances of the raw material coming into the

reactor constant human attention is required. Operators need a large easy to read local flow indicator to maintain the correct flow rates needed for the process.

 

 

 

 

 

 

Solution

Because of their 6" large bold display and the optional 4-20 ma transmitter with digital display, Yokogawa's RAMC Rotameter were chosen to be the best fit for the required

operation of the reactor. Operators could easily see the changes in gas flows needed to maintain proper operation. The optional transmitter with the 4-20 ma or pulse output

gives direct feedback to an operator in a control room. Additionally, the RAMC has both FM and ATEX intrinsically safe certifications for use in possible explosive atmospheres.

 

Solar Silicon Facilities

To assist you in locating these silicon wafer opportunities in your area, below is a link that lists all the refinement plants in the United States.

http://www.enfsolar.com/directory/material/polysilicon

Productos y Soluciones Relacionadas

RAKD

El rotámetro RAKD se utiliza para la medición de líquidos y gases y es altamente preciso, en particular para flujos bajos y aplicaciones de alta presión.

RAMC

316L Construcción de Acero Inoxidable 
2% Precisión de Escala Completa 
4-20ma Salida                              Protocolo Hart Disponible
Interruptores de Límite Ajustables
0.95 a 550 GPM
0.42 a 1050 SCFM

Aire   Agua

Custom Aplicaciones

Medidores de Flujo Rotámetros

El Medidor de Flujo de Área Variable es uno de los principios más antiguos y maduros en la medición de flujo con su diseño simple: un flotador se eleva dentro de un tubo de vidrio con forma cónica a medida que aumenta el flujo y su posición en una escala pueden leerse como una tasa de flujo.

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