ASHRAE Journal - January 2010 - 25

Roof Wall R U-Value R Window U-Value R Design Heat Loss Btu/h Savings Scenarios U-Value Ventilation Load Btu/h Heating Plant Size Btu/h Input Savings Natural Gas Use Therms/ year Savings Standard 90.1 - 2007 Improved Design Low Energy Design Low Energy Design +HR +Condensing Boiler 0.0480 0.0333 0.0286 0.0286 20.8 30.0 35.0 35.0 0.0900 0.0417 0.0357 0.0357 11.1 24.0 28.0 28.0 0.3500 0.3500 0.2500 0.2500 2.86 2.86 4.00 4.00 697,080 591,679 481,085 481,085 – 15.1% 31.0% 31.0% 479,520 479,520 479,520 234,965 1,434,878 1,306,341 1,171,469 873,231 – 9.0% 18.4% 39.1% 26,446 16,839 15,414 13,351 – 36.3% 41.7% 49.5% • Design heat loss calculated as follows: · Indoor temperature of 70°F and OA winter design of –4°F (Climate Data, 2001 ASHRAE Handbook—Fundamentals, Chapter 27, at Chicago Meigs Field) · Infiltration heat loss based on 0.05 cfm/ft2 wall area · Design Heat Loss (Q) = Ur Ar (Ti – Td) + Uw Aw (Ti – Td) + Uwi Awi (Ti – Td) + Inf. A 1.08 (Ti – Td) • The ventilation load is based on 250 ft/person and 15 cfm/person • The heating plant size based on an 82% thermal efficiency (Et) • The annual natural gas was calculated with DOE 2.1E • The annual natural gas use includes 5,730 therms for DHW or 5.8 kBtu/ft2·yr Table 4: Impact of varying thermal performance levels on design heat loss and annual natural gas use for a five-story, 100,000 ft2 office in Chicago with a 100 × 200 ft footprint and a WWR of 0.35 (U-Values in Btu/h · ft² · °F). Studies show high performance glazing systems are a net heat source during heating season in most climates. This can be true for double-skin façades (DSF).20 A properly designed DSF can operate as an energy positive envelope and achieve large heating energy savings relative to what is expected from only its thermal performance since the two façades can act as a passive solar collector. www.info.hotims.com/27101-105 www.info.hotims.com/27101-143 January 2010 D58555asjl_910744.indd 1 ASHRAE Journal 9/10/09 7:57:18

ASHRAE Journal - January 2010

Table of Contents for the Digital Edition of ASHRAE Journal - January 2010

ASHRAE Journal - January 2010
Contents
Commentary
Industry News
Letters
Meetings and Shows
Commissioning High Performance Buildings
Sustainability in Cold Climates
Back to Basics: Duct Design Fundamentals
History of Radiant Heating & Cooling Systems, Part 1
Capturing Condensate by Retrofitting AHUs
Washington Report
Building Sciences
Emerging Technologies
Classified Advertising
Advertisers Index
ASHRAE Journal - January 2010 - Intro
ASHRAE Journal - January 2010 - ASHRAE Journal - January 2010
ASHRAE Journal - January 2010 - Cover2
ASHRAE Journal - January 2010 - 1
ASHRAE Journal - January 2010 - 2
ASHRAE Journal - January 2010 - Contents
ASHRAE Journal - January 2010 - 4
ASHRAE Journal - January 2010 - Commentary
ASHRAE Journal - January 2010 - Industry News
ASHRAE Journal - January 2010 - 7
ASHRAE Journal - January 2010 - 8
ASHRAE Journal - January 2010 - Letters
ASHRAE Journal - January 2010 - Meetings and Shows
ASHRAE Journal - January 2010 - 11
ASHRAE Journal - January 2010 - Commissioning High Performance Buildings
ASHRAE Journal - January 2010 - 13
ASHRAE Journal - January 2010 - 14
ASHRAE Journal - January 2010 - 15
ASHRAE Journal - January 2010 - 16
ASHRAE Journal - January 2010 - 17
ASHRAE Journal - January 2010 - 18
ASHRAE Journal - January 2010 - 19
ASHRAE Journal - January 2010 - Sustainability in Cold Climates
ASHRAE Journal - January 2010 - 21
ASHRAE Journal - January 2010 - 22
ASHRAE Journal - January 2010 - 23
ASHRAE Journal - January 2010 - 24
ASHRAE Journal - January 2010 - 25
ASHRAE Journal - January 2010 - 26
ASHRAE Journal - January 2010 - 27
ASHRAE Journal - January 2010 - 28
ASHRAE Journal - January 2010 - 29
ASHRAE Journal - January 2010 - Back to Basics: Duct Design Fundamentals
ASHRAE Journal - January 2010 - 31
ASHRAE Journal - January 2010 - 32
ASHRAE Journal - January 2010 - ME1
ASHRAE Journal - January 2010 - ME2
ASHRAE Journal - January 2010 - ME3
ASHRAE Journal - January 2010 - ME4
ASHRAE Journal - January 2010 - ME5
ASHRAE Journal - January 2010 - ME6
ASHRAE Journal - January 2010 - ME7
ASHRAE Journal - January 2010 - ME8
ASHRAE Journal - January 2010 - 33
ASHRAE Journal - January 2010 - 34
ASHRAE Journal - January 2010 - 35
ASHRAE Journal - January 2010 - 36
ASHRAE Journal - January 2010 - 37
ASHRAE Journal - January 2010 - 38
ASHRAE Journal - January 2010 - 39
ASHRAE Journal - January 2010 - History of Radiant Heating & Cooling Systems, Part 1
ASHRAE Journal - January 2010 - 41
ASHRAE Journal - January 2010 - 42
ASHRAE Journal - January 2010 - 43
ASHRAE Journal - January 2010 - 44
ASHRAE Journal - January 2010 - 45
ASHRAE Journal - January 2010 - 46
ASHRAE Journal - January 2010 - 47
ASHRAE Journal - January 2010 - Capturing Condensate by Retrofitting AHUs
ASHRAE Journal - January 2010 - 49
ASHRAE Journal - January 2010 - 50
ASHRAE Journal - January 2010 - 51
ASHRAE Journal - January 2010 - 52
ASHRAE Journal - January 2010 - 53
ASHRAE Journal - January 2010 - 54
ASHRAE Journal - January 2010 - 55
ASHRAE Journal - January 2010 - Washington Report
ASHRAE Journal - January 2010 - Building Sciences
ASHRAE Journal - January 2010 - 58
ASHRAE Journal - January 2010 - 59
ASHRAE Journal - January 2010 - 60
ASHRAE Journal - January 2010 - 61
ASHRAE Journal - January 2010 - 62
ASHRAE Journal - January 2010 - 63
ASHRAE Journal - January 2010 - Emerging Technologies
ASHRAE Journal - January 2010 - 65
ASHRAE Journal - January 2010 - 66
ASHRAE Journal - January 2010 - 67
ASHRAE Journal - January 2010 - Classified Advertising
ASHRAE Journal - January 2010 - 69
ASHRAE Journal - January 2010 - 70
ASHRAE Journal - January 2010 - Advertisers Index
ASHRAE Journal - January 2010 - 72
ASHRAE Journal - January 2010 - Cover3
ASHRAE Journal - January 2010 - Cover4
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_QJLWMC
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_MCDEBX
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_WNYSQY
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_XATVOD
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_FJSHSS
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_CCBZDS
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_XDEFVG
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2023november_v2
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2023november
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_VHGNBL
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_WPKBNJ
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_UUVCDE
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_RTGDEW
https://www.nxtbook.com/nxtbooks/ashrae/ashraemexico_2023
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_LKRFXS
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_AZSOFG
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_ERCDBH
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_QWDFRV
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_JHGVDF
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_OPUYHG
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_SREIBM
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_LRTGLK
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_OKRFGH
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2022november_v2
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2022november
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_TZSERA
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_LVRUIX
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_RPTVYZ
https://www.nxtbook.com/nxtbooks/ashrae/mini_pub_catalog
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_XIYTGD
https://www.nxtbook.com/nxtbooks/ashrae/ashraemexico_2022
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_RFGDOB
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_PABXNU
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_REMKLS
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_PICVBT
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_AOYTVW
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_JQOPLS
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_IOYTBC
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_SGAJJF
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_IGHYER
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_PDRKLS
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2021november
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2021november_v2
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_XCODFR
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_QSLFGO
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_ILKVNM
https://www.nxtbook.com/nxtbooks/ashrae/ashraemexico_2021
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_OPDJKD
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_VJKSRY
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_SDHUTC
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_JPPKRR
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_SDLTTH
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_CKLLES
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_SLDOX
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_HJETUK
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_OLUHGE
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2020october
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2020october_v2
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_ZERDGH
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_QVMNEO
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_RTPOKE
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_BBATRE
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_STUBMW
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_TPEMPE
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_JNMKDS
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_FBTTPA
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_WQMMNE
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_TVBRYN
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_showguide2020
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_KTUZMA
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_ABEDGD
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201910
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201909
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2019septmeber_v2
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2019september
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201908
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201907
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201906
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201905
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201904
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_2019april
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201903
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_2019march
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201902
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201901
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_showguide2019
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_2018december
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_2018november
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2018fall_v2
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2018fall
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_2018october
https://www.nxtbook.com/nxtbooks/ashrae/ashraemexico_2018
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201810
https://www.nxtbook.com/nxtbooks/ashrae/ashraeinsights_201806
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201805
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201804
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201803
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201712
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201711
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201710
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2017fall_v2
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2017fall
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201709
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201705
https://www.nxtbook.com/nxtbooks/ashrae/ashrae_meetinginsert_201610
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2016fall_v2
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2016fall
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_acrexindia
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2015summer_v2
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2015summer
https://www.nxtbook.com/nxtbooks/amca/2014summer2
https://www.nxtbook.com/nxtbooks/amca/2014summer
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_acma_2014summer
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201311
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201309
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_acmasupp_2013fall
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201305
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201303
https://www.nxtbook.com/nxtbooks/ashrae/pubcatalog_2013winter
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201211
https://www.nxtbook.com/nxtbooks/ashrae/achr_expo_mexico2012
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201209
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201208_v3
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201208_v2
https://www.nxtbook.com/nxtbooks/ashrae/pubcatalog_2012summer
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201205
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201203
https://www.nxtbook.com/nxtbooks/ashrae/pubcatalog_2012winter
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201111_v2
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201109_v2
https://www.nxtbook.com/nxtbooks/ashrae/pubcatalog_2011summer
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201105
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201103
https://www.nxtbookmedia.com