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2. Process duct work - Wikipedia

   en.wikipedia.org/wiki/Process_Duct_Work

   Round duct support rings are spaced, often at three diameters, or as require at up to about 50 ft centers (14 m). At this spacing the main support rings are designed for the sum of suction pressure stresses & support bending moments. Round ductwork allowable compressive stress is = 662 /(d/t) +339 * Fy (tubular steel structures, chapter 2).

3. Pipe support - Wikipedia

   en.wikipedia.org/wiki/Pipe_support

   A pipe support or pipe hanger is a designed element that transfer the load from a pipe to the supporting structures. The load includes the weight of the pipe proper, the content that the pipe carries, all the pipe fittings attached to pipe, and the pipe covering such as insulation .

4. Baffle (heat transfer) - Wikipedia

   en.wikipedia.org/wiki/Baffle_(heat_transfer)

   As mentioned, baffles deal with the concern of support and fluid direction in heat exchangers. In this way it is vital that they are spaced correctly at installation. The minimum baffle spacing is the greater of 50.8 mm or one fifth of the inner shell diameter. The maximum baffle spacing is dependent on material and size of tubes.

5. Heat recovery ventilation - Wikipedia

   en.wikipedia.org/wiki/Heat_recovery_ventilation

   Diagramatic operation of a thermal wheel Ljungström Air Preheater by Swedish engineer Fredrik Ljungström (1875–1964). A thermal wheel, also known as a rotary heat exchanger, or rotary air-to-air enthalpy wheel, energy recovery wheel, or heat recovery wheel, is a type of energy recovery heat exchanger positioned within the supply and exhaust air streams of air-handling units or rooftop ...

6. Hockey player Matthew Petgrave crowdfunding for legal fees ...

   www.aol.com/hockey-player-matthew-petgrave-crowd...

   For premium support please call: 800-290-4726 more ways to reach us. Sign in. Mail. ... tragic accident” and says he is “seeking help to cover some of my legal costs whilst I am subject to ...

7. Tennessee Onions Are Good Enough To Make You Cry - AOL

   www.aol.com/tennessee-onions-good-enough-cry...

   2 1/2 lb. sweet Vidalia onions (3 large or 4 medium), peeled Arrange a rack in center of oven; preheat to 350°. Lightly grease a 13” x 9” baking dish with cooking spray. Arrange an onion on ...