ii) An engineer proposed the following design for the heat recovery system. Above the pinch Below the pinch Hex 150 Hex 40 Hex2 C2 150 40 3 2.6 105 Hex3 30 140 4 %23 Hext 140 Hex 60 Determine the thermal loads of the heat exchangers, coolers and heaters proposed by the engineer. 12 24

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Engineering Drawing

Technical drawing has been around since ancient times. As in the ancient Renaissance, complicated drawings were created, including Leonardo da Vinci's drawing. Modern engineering drawing, including its specific orthographic projection with scale conventions, began in Europe (France) during the early stages of Industrialization. L.T. C. Rolt also made some of Marc's drawings for its block-making machinery (in 1799) that also may have contributed significantly to British engineering technology. Since he learned the art of presenting three-dimensional(3D) items in a two-dimensional(2D) plane, as we now term mechanical drawing.