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r'p'::~ ,D _7 CONSULTI?:G ELECT,~iC AL ., . ~,,: . .,-. 345 GUcEPd STREET SUI"c .7i .., ,._ November 25, 1980 Mr. Lawrence G. Spielvogel Wyncote House Wyncote, PA 19095 Subject: A6HtAE Standards Draft Revision 62-73R, January 15, 1980 Dear Larry, Thanks for picking up an error inmy reply to your June 27th conments on the draft. The "95 cubic feet" I cited, should have been 95 cfm, I am informed. (For ocmparison, British StandBrd 5925:1980 assumes an indeterminate portiai of adult building occupants smokes, at a rate of 1.3 cigarets per hour per smoker, and that 20 m3 of fresh air seems reasonable per cigaret. This is about 700 ft3. Fbr 2 cigarets, 1400 ft3 would be required. So, per smoker, about 23.3 ft3/min would thus be required if you use the British dilutial suggestion.) After reviewing your response of October 6th, we identify the following areas as unresolved: 1. Section 5.1. When natural ventilation and infiltration are relied on, without-the extra expense of mechanical ventilation, the conmittee feels it should be mandatory that the ventilation rate be detmnstrated (not necessarily measurable). 2. Table 3 and Section 6,1.3. (My reference to page 22 should have been page .) Smo ing vs. non-smo ing ventilating air flow rates. These will be listed as unresolved oamnents in the Crnmittee's report. Very truly yours, Frederick H. Kohloss Member, ASHRAE Standard Project Conmittee 62-73R FHK/jk oc: Jim Woods John Janssen 2.)1 ..•Sf.,..AC.I.,Y~,..-..•,. tc..,...~,. U2~ .-"~~ ...:J~r7~: . ..i.., .' .- .~ :... .. vy ®