Building Science. Adventures In Building Science. Stuff That Is Not Particularly Useful But Studied and Researched to Death
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1 Stuff That Is Not Particularly Useful But Studied and Researched to Death Joseph Lstiburek, Ph.D., P.Eng, ASHRAE Fellow Building Science Adventures In Building Science Stuff That Is Very Useful but Ignored by the Research Community presented by Joseph Lstiburek 2 Stuff That Is Not Particularly Useful But Studied and Researched to Death this is called Physics Stuff That Is Very Useful but Ignored by the Research Community this is called Engineering Flow Through Orifices Turbulent Flow - inertial effects Flow Through Porous Media Laminar Flow - viscosity effects Joseph Lstiburek 3 Joseph Lstiburek 4 Lstiburek buildingscience.com 1 of 20
2 Flow Through Orifices Turbulent Flow - inertial effects Flow Through Porous Media Laminar Flow - viscosity effects Q = A C D ( P ) Q = C K ( P ) Bernoulli Darcy true but not useful Joseph Lstiburek 5 Joseph Lstiburek Q = A C D ( P ) Bernoulli Q = A C D ( P ) Bernoulli Q = C K ( P ) Darcy Q = C K ( P ) Darcy Q = A C( P) 1 2 Q = C( P) Q = A C( P) 1 2 Q = C( P) Q = A C( P) n Kronval an engineer Joseph Lstiburek 7 Joseph Lstiburek 8 Lstiburek buildingscience.com 2 of 20
3 The Cult of The Blower Door Joseph Lstiburek 9 Joseph Lstiburek 10 Joseph Lstiburek 11 Joseph Lstiburek 12 Lstiburek buildingscience.com 3 of 20
4 Cost of Addressing the Problems Are Less Than The Cost of Testing To See If You Have Problems Cost of Addressing the Problems Are Less Than The Cost of Testing To See If You Have Problems Nike Approach - Just Do It Joseph Lstiburek 13 Joseph Lstiburek 14 Don t Do Stupid Things Combustion Safety Indoor Contaminants Comfort Energy Joseph Lstiburek 15 Joseph Lstiburek 16 Lstiburek buildingscience.com 4 of 20
5 Bring Combustion Appliances Up To Code Control Pressures Install Controlled Ventilation Get Rid of Big Holes Insulate Joseph Lstiburek 17 Joseph Lstiburek 18 Joseph Lstiburek 19 Joseph Lstiburek 20 Lstiburek buildingscience.com 5 of 20
6 Joseph Lstiburek 21 Joseph Lstiburek 22 Joseph Lstiburek 23 Joseph Lstiburek 24 Lstiburek buildingscience.com 6 of 20
7 Joseph Lstiburek 25 Joseph Lstiburek 26 Joseph Lstiburek 27 Joseph Lstiburek 28 Lstiburek buildingscience.com 7 of 20
8 Joseph Lstiburek 29 Joseph Lstiburek 30 Code Compliant Combustion Air Joseph Lstiburek 31 Joseph Lstiburek 32 Lstiburek buildingscience.com 8 of 20
9 Joseph Lstiburek 33 Joseph Lstiburek 34 Joseph Lstiburek 35 Joseph Lstiburek 36 Lstiburek buildingscience.com 9 of 20
10 Joseph Lstiburek 37 Joseph Lstiburek 38 Joseph Lstiburek 39 Joseph Lstiburek 40 Lstiburek buildingscience.com 10 of 20
11 Sealed Combustion Appliances Joseph Lstiburek 41 Joseph Lstiburek 42 Joseph Lstiburek 43 Joseph Lstiburek 44 Lstiburek buildingscience.com 11 of 20
12 Joseph Lstiburek 45 Joseph Lstiburek 46 Control Pressures Joseph Lstiburek 47 Joseph Lstiburek 48 Lstiburek buildingscience.com 12 of 20
13 Joseph Lstiburek 49 Joseph Lstiburek 50 Joseph Lstiburek 51 Joseph Lstiburek 52 Lstiburek buildingscience.com 13 of 20
14 Joseph Lstiburek 53 Joseph Lstiburek 54 Joseph Lstiburek 55 Joseph Lstiburek 56 Lstiburek buildingscience.com 14 of 20
15 Joseph Lstiburek 57 Joseph Lstiburek 58 Joseph Lstiburek 59 Joseph Lstiburek 60 Lstiburek buildingscience.com 15 of 20
16 Joseph Lstiburek 61 Joseph Lstiburek 62 Joseph Lstiburek 63 Joseph Lstiburek 64 Lstiburek buildingscience.com 16 of 20
17 Joseph Lstiburek 65 Joseph Lstiburek 66 Joseph Lstiburek 67 Joseph Lstiburek 68 Lstiburek buildingscience.com 17 of 20
18 Controlled Ventilation Joseph Lstiburek 69 Joseph Lstiburek 70 Three Types of Controlled Ventilation Systems Exhaust Ventilation Supply Ventilation Balanced Ventilation Joseph Lstiburek 71 Joseph Lstiburek 72 Lstiburek buildingscience.com 18 of 20
19 Joseph Lstiburek 73 Joseph Lstiburek 74 Joseph Lstiburek 75 Joseph Lstiburek 76 Lstiburek buildingscience.com 19 of 20
20 Joseph Lstiburek 77 Joseph Lstiburek 78 ASHRAE Standard 62.2 calls for 7.5 cfm per person plus 0.01 cfm per square foot of conditioned area Occupancy is deemed to be the number of bedrooms plus one Occupant Rate + Building Rate Joseph Lstiburek 79 Lstiburek buildingscience.com 20 of 20
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