tailieunhanh - Building systems for_interior designers phần 5

Cơ sở này bao gồm một phòng phát sóng, các mục như báo chí có thể được treo trong khi mùi mực bay hơi. Ván ép mật độ che phủ cao (HDO) gỗ dán bên ngoài là ván ép với lớp phủ bằng sợi nhựa trên cả hai mặt. Trung mật độ gỗ dán lớp phủ (MDO) có chứa chất phenolic hoặc lớp phủ nhựa melamine trên một hoặc cả hai bên. | 172 HEATING AND COOLING SYSTEMS actually use convection as their primary heating principle. There are various styles of baseboard and cabinet convection heating units used in smaller buildings. Their appearance and the space they occupy are of concern to the interior designer. When located below a window they can affect the design of window treatments. Radiators consist of a series or coil of pipes through which hot water or steam passes. The heated pipes warm the space by convection and somewhat by radiation. Fin-tube radiators also called fin-tube convectors are usually used along outside walls and below windows. They raise the temperatures of the glass and wall surfaces. Along an interior wall a fin-tube radiator would reinforce the cold air circulation pattern in the room and occupants would be too cold on one side and too hot on the other. Fin-tube baseboard units have horizontal tubes with closely spaced vertical fins to maximize heat transfer to the surrounding air. The aluminum or copper fins are 5 to 10 cm 2-4 in. square and are bonded to copper tubing. Steam or hot water circulates through the tubing. There are also electric resistance fin-tube units with an electrical element instead of the copper tubing. Cool room air is drawn in from below by convection and rises by natural convection when heated by contact with the fins. The heated air is discharged out through a grille at the top and more air is drawn into the bottom of the unit. Baseboard unit enclosures usually run the length of the wall but the element inside may be shorter. They tend to be less conspicuous than cabinet-style units. Convectors are a form of fin-tube radiator with an output larger than a baseboard fin-tube convector for a given length of wall. Convectors are housed in freestanding wall-hung or recessed cabinets 61 cm high by 91 cm wide 2 by 3 ft . Air must flow freely around the units in order to be heated. Each unit has an inlet valve which can be adjusted with a screwdriver to .