[Chemical composition] The compositional change is large in the F:OH ratio, and the ratio varies depending on the conditions (production temperature) of the topaz varies from 3:1 to 1:1. From pegmatite → Yunyingyan → hydrothermal, the F:OH of topaz is from large to small. [Crystal structure] orthorhombic system; [Form] Columnar crystal form, common single shape is oblique square {110}, {120}, {021}; oblique double cone {111}, {221}, parallel double-sided {001}, {010}. The cylinder often has vertical stripes (Figure G-13). It is also often in the form of irregular granules and massive aggregates. Figure G-13 Topaz crystal [Physical properties] colorless or microstrip blue-green, yellow, milky white, tan or red-yellow; transparent; glass gloss cleavage parallel {001} complete. Hardness 8. The relative density is 3.52 to 3.57. [Cause and occurrence] Topaz is a typical gas-forming hydrothermal mineral under the condition of high temperature and volatile components. It is mainly produced in granitic pegmatite, Yunyingyan and high temperature gas-forming hydrothermal veins. [Identification features] columnar crystal form, the cross section is rhombus, the column has vertical lines, the cleavage {001} is complete, high hardness, which can be distinguished from similar quartz . [Main use] Transparent color beauty can be used as a gem material. Other bearings that can be used as abrasive materials and fine instruments. Air Handling Systems Air Handling Systems Air Handling Systems,Air Handling Unit Systems,Ventilation System Air Handling,Systems Type Air Handling Jinan Amrta Air Conditioning Co.,Ltd , https://www.amrtaac.com
a 0 = 0.465 nm, b 0 = 0.880 nm, c 0 = 0.840 nm; Z = 4. The structure of the crystal is composed of O 2- , F - , and OH - together as the four closest packing of ABCB (also called "double hexagonal" packing), and the stacked layer is parallel to (010). Al 3+ occupies an octahedral void to form an [AlO 4 (F, OH) 2 ] octahedron; Si 4+ occupies a tetrahedral void, and the composition [SiO 4 ] tetrahedron is isolated, with the aid of [AlO 4 (F, OH) 2 ] Octahedrons are linked.
Air handling unit as terminals of Central Air Conditioner . Equipped with main air cooled chiller or Water Cooled Chiller to cool or heat the target place. Bigger than Fan Coil unit. Also purify indoor air to make people feel comfortable.
Air handling unit series:
1. Ceiling Type Air Handling Unit
Air flow 1,000m3/h-30,000m3/h, Coil type 4rows/6rows/8rows
2.Horizontal Type Air Handling Unit
Air flow 1,000m3/h-50,000m3/h,Coil type 4rows/6rows/8rows
3.Vertical Type Air Handling Unit
Air flow 1,000m3/h-50,000m3/h,Coil type 4rows/6rows/8rows
4. Modular Type Air Handling Unit
Air flow 3,000m3/h-30,0000m3/h, Coil type 4rows/6rows/8rows
5.Chilled Water Air Handling Unit
Water chilled type, Air flow 1,000m3/h-30,0000m3/h, Coil type 4rows/6rows/8rows
6. DX Type Air Handling Unit
DX type, Air flow 1,000m3/h-30,0000m3/h, Coil type 4rows/6rows/8rows
7.Medical type air handling unit
8. Cabinet Type Air Handling Unit
9.Composed Type Air Handling Unit
10. Hygienic Type Air Handling Unit
Characteristics
1.Amrta air handling unit with colorful steel and galvanized panel as its interior and exterior panel. Inner stuff is the high density polyurethane foam. Case thickness 25mm or 50mm to strength the unit and avoid air leakage.
2.Filter, primary filter G4 is standard. Medium F7/f8 and HEPA filter H13 is an optional.
3.Adopt pure and seamless copper tube and hydrophilic aluminum fin. Make high efficiency heat exchanging.
4.ESP is stepless control and there are different ESP for options. At the same time, varies air outlet directions and coil rows are for options.
5.Coils type. 4rows/6rows/8rows.
6.Condition type. 100%Fresh air/return air.
7.Service door with sight glass window
Al 2 [SiO 4 ](F,OH) 2