Abstract: Based on the common techniques of exhaust stack in kitchens,which are primary-secondary type,pressure-variation type,back valve type,and pressure-variation without backflow type,it presents the fuzzy comprehensive evaluation of exhaust effects,compatibilitg with buildings,space requirement,ease of construction,costs and so on,compares all types of exhaust stack from the standpoints of techniques and economy with the method of fuzzy comprehensive evaluation,and provides the basis for consumers with different...

Key words: kitchen; exhaust stack; multi-storey buildings; fuzzy comprehensive evaluation;