Book - School of Science and Technology

Radiant heating 181Flow mainRadiant stripsReversed return mainFigure 7.4 Application of strip heating to long workshopably high level and this requirement may conflict in some cases with provision for thermalexpansion. Figure 7.4 shows a layout in a long workshop which was conceived to overcomethis problem.Although not so described at the time, radiant strip heating was commonly provided tonorth-light factories some 50 or more years ago in the form of suspended rows of 100 mmpipe. A not unusual arrangement was to provide one such row below the south-facingroof and two rows below the glazing. Using low temperature hot water in each case, thetotal emission from a 100 mm pipe so suspended is not very different from that of a singlepiperadiant strip but the load imposed on the building structure is 13 times greater!Metal radiant ceilingsThe equipment to which reference has been made in previous paragraphs provides eithera linear or a point source of radiation. Output from a metal-plate suspended ceiling,Support strapInsulation blanketSquarecoilheaderEdgefixingPerforated metalceiling panelsPipecoilPanelclipFigure 7.5 Metal plate radiant ceiling