Ashrae Journal - December 2008 - 68

New Product Preview Advertising Section Therma-Fuser™ V Critical to Earning All Ten LEED® Credits for Optimizing Energy AV than a standard VAV box based system: the energy savings are realized from four sources. First, Therma-Fuser diffusers allow for economical control of small individual zones, preventing over cooling and over heating when spaces are unoccupied and providing a good measure of local control to the large and diverse system zones. Second, turndown of a Therma-Fuser system is not limited by the need to measure air velocity: this allows a very low ventilation-only minimum flow rate. This essential feature eliminates localized overcooling (no reheat system was installed or budgeted). Third, the total pressure drop over the VAV box is eliminated, saving fan energy. Finally, ThermaFuser diffusers are ideal for a very low pressure system, this saves additional fan energy. Also, a major cost was eliminated because the Therma-Fuser diffusers did not require any external controls or electrical power: their unique design incorporates temperaturebased damper actuation provided by ambient room temperature. THE CONTROLS Controls were kept as simple as possible to minimize project costs and to protect against efficiency decay: the inevitable misadjustments, overrides, and sensor drift that increase the energy use of more complex control systems over time. The use of ThermaFuser diffusers in place of VAV boxes with their accompanying controls, combined with the elimination of reheat, met the client’s demands for tight, zoned control and resulted in significant budget savings. Because of the high efficiency goals, these savings were invested in high efficiency package units with variable speed fans and modulating gas valves in the heating sections. Four carbon dioxide sensors monitor carbon dioxide levels; this indirectly detects the number of people in the building and increases or reduces the amount of outside air mixed in with return air before it is sent out to the zone. Airflow volume is controlled by the Therma-Fuser diffusers via the fan pressure control, while the CO2 sensors actuate outside air dampers. THE RESULT StopWaste.Org received a total project score of 54, all ten credits for optimizing energy performance and a LEED Platinum certification. Software energy modeling shows that the building outperforms Title 24-2005, California’s stringent energy code, by 47%. “Occupants’ comfort, energy-efficiency AND an affordable system – we wanted all three and were able to get them. Getting a LEED Platinum rating is icing on the cake,” said Wendy Sommers, Senior Program Manager at Stopwaste.org. December 2008 THE GOAL For over 30 years StopWaste.Org has been helping Alameda County, California, residents and businesses adopt sustainable consumption and disposal habits. Therefore, there was no question that the 14,000 square foot, two story Oakland, California building that it purchased and renovated for its offices had to be green. The initial goal was a LEED Silver, but as the project progressed StopWaste.Org decided to aim for the highest possible rating, a LEED Platinum. An important part of achieving this goal was to earn all of the possible LEED credits for optimizing energy performance. THE SYSTEM To achieve the ten energy performance points, StopWaste.Org asked Rumsey Engineers, an Oakland, California based firm with extensive experience designing low energy building systems, to make the building and its HVAC systems far more efficient than a standard building – using at least 40% less energy than a standard building built to meet the stringent state Title 24 energy code. Energy modeling was an important design tool used to optimize the building’s energy performance. Modeling showed that combining increased wall insulation levels with high performance windows allowed for both large system control zones and also eliminated the need for a perimeter heating system. The investment in the envelope allowed the design team to completely eliminate reheat: this yielded significant construction cost and energy savings. The building was divided into four master zones; perimeter and core offices on the second floor, plus perimeter offices and a large board room on the first floor. The three office master zones are conditioned using a high efficiency packaged DX and gas heat rooftop air handling unit with a variable speed fan. The master zones are subzoned with 29 model ST-HC and two model TK-HC Therma-Fuser thermally powered VAV diffusers. manufactured by Acutherm. Therma-Fuser diffusers were selected in order to gain energy savings that VAV boxes could not provide, and to avoid breaking the project budget. Rumsey Engineers’ detailed energy models, created using software based on the widely used DOE2.1E engine, calculated that these systems use less energy 68 ASHRAE Journal ashrae.org

Ashrae Journal - December 2008

Table of Contents for the Digital Edition of Ashrae Journal - December 2008

Ashrae Journal - December 2008
Contents
Commentary
Industry News
Letters
Meetings and Shows
Feature Articles
Selecting CO2 Criteria for Outdoor Air Monitoring
Chilled Beams for Labs: Using Dual Energy Recovery
Understanding Fuel Savings in the Boiler Room
Engineering-Centric BIM
Refrigeration for Ships
Building Sciences
New Product Preview
Special Products
Feature Indices
Classified Advertising
Advertising Index
Ashrae Journal - December 2008 - Ashrae Journal - December 2008
Ashrae Journal - December 2008 - Cover2
Ashrae Journal - December 2008 - 1
Ashrae Journal - December 2008 - 2
Ashrae Journal - December 2008 - Contents
Ashrae Journal - December 2008 - 4
Ashrae Journal - December 2008 - Commentary
Ashrae Journal - December 2008 - 6
Ashrae Journal - December 2008 - 7
Ashrae Journal - December 2008 - Industry News
Ashrae Journal - December 2008 - 9
Ashrae Journal - December 2008 - 10
Ashrae Journal - December 2008 - 11
Ashrae Journal - December 2008 - Letters
Ashrae Journal - December 2008 - 13
Ashrae Journal - December 2008 - 14
Ashrae Journal - December 2008 - 15
Ashrae Journal - December 2008 - Meetings and Shows
Ashrae Journal - December 2008 - 17
Ashrae Journal - December 2008 - Selecting CO2 Criteria for Outdoor Air Monitoring
Ashrae Journal - December 2008 - 19
Ashrae Journal - December 2008 - 20
Ashrae Journal - December 2008 - 21
Ashrae Journal - December 2008 - 22
Ashrae Journal - December 2008 - 23
Ashrae Journal - December 2008 - 24
Ashrae Journal - December 2008 - 25
Ashrae Journal - December 2008 - 26
Ashrae Journal - December 2008 - 27
Ashrae Journal - December 2008 - Chilled Beams for Labs: Using Dual Energy Recovery
Ashrae Journal - December 2008 - 29
Ashrae Journal - December 2008 - 30
Ashrae Journal - December 2008 - 31
Ashrae Journal - December 2008 - 32
Ashrae Journal - December 2008 - 33
Ashrae Journal - December 2008 - 34
Ashrae Journal - December 2008 - 35
Ashrae Journal - December 2008 - 36
Ashrae Journal - December 2008 - 37
Ashrae Journal - December 2008 - Understanding Fuel Savings in the Boiler Room
Ashrae Journal - December 2008 - 39
Ashrae Journal - December 2008 - 40
Ashrae Journal - December 2008 - 41
Ashrae Journal - December 2008 - 42
Ashrae Journal - December 2008 - 43
Ashrae Journal - December 2008 - Engineering-Centric BIM
Ashrae Journal - December 2008 - 45
Ashrae Journal - December 2008 - 46
Ashrae Journal - December 2008 - 47
Ashrae Journal - December 2008 - 48
Ashrae Journal - December 2008 - 49
Ashrae Journal - December 2008 - Refrigeration for Ships
Ashrae Journal - December 2008 - 51
Ashrae Journal - December 2008 - 52
Ashrae Journal - December 2008 - 53
Ashrae Journal - December 2008 - 54
Ashrae Journal - December 2008 - 55
Ashrae Journal - December 2008 - 56
Ashrae Journal - December 2008 - 57
Ashrae Journal - December 2008 - 58
Ashrae Journal - December 2008 - 59
Ashrae Journal - December 2008 - Building Sciences
Ashrae Journal - December 2008 - 61
Ashrae Journal - December 2008 - 62
Ashrae Journal - December 2008 - 63
Ashrae Journal - December 2008 - 72
Ashrae Journal - December 2008 - 64
Ashrae Journal - December 2008 - 65
Ashrae Journal - December 2008 - 66
Ashrae Journal - December 2008 - New Product Preview
Ashrae Journal - December 2008 - 68
Ashrae Journal - December 2008 - 69
Ashrae Journal - December 2008 - 70
Ashrae Journal - December 2008 - 71
Ashrae Journal - December 2008 - 72a
Ashrae Journal - December 2008 - 72b
Ashrae Journal - December 2008 - 73
Ashrae Journal - December 2008 - 74
Ashrae Journal - December 2008 - 75
Ashrae Journal - December 2008 - 76
Ashrae Journal - December 2008 - 77
Ashrae Journal - December 2008 - 78
Ashrae Journal - December 2008 - 79
Ashrae Journal - December 2008 - 80
Ashrae Journal - December 2008 - 81
Ashrae Journal - December 2008 - 82
Ashrae Journal - December 2008 - 83
Ashrae Journal - December 2008 - 84
Ashrae Journal - December 2008 - 85
Ashrae Journal - December 2008 - 86
Ashrae Journal - December 2008 - 87
Ashrae Journal - December 2008 - 88
Ashrae Journal - December 2008 - 89
Ashrae Journal - December 2008 - 90
Ashrae Journal - December 2008 - 91
Ashrae Journal - December 2008 - 92
Ashrae Journal - December 2008 - 93
Ashrae Journal - December 2008 - 94
Ashrae Journal - December 2008 - 95
Ashrae Journal - December 2008 - 96
Ashrae Journal - December 2008 - 97
Ashrae Journal - December 2008 - 98
Ashrae Journal - December 2008 - 99
Ashrae Journal - December 2008 - 100
Ashrae Journal - December 2008 - 101
Ashrae Journal - December 2008 - 102
Ashrae Journal - December 2008 - 103
Ashrae Journal - December 2008 - 104
Ashrae Journal - December 2008 - 105
Ashrae Journal - December 2008 - 106
Ashrae Journal - December 2008 - 107
Ashrae Journal - December 2008 - 108
Ashrae Journal - December 2008 - 109
Ashrae Journal - December 2008 - 110
Ashrae Journal - December 2008 - 111
Ashrae Journal - December 2008 - 112
Ashrae Journal - December 2008 - 113
Ashrae Journal - December 2008 - 114
Ashrae Journal - December 2008 - 115
Ashrae Journal - December 2008 - 116
Ashrae Journal - December 2008 - 117
Ashrae Journal - December 2008 - 118
Ashrae Journal - December 2008 - 119
Ashrae Journal - December 2008 - 120
Ashrae Journal - December 2008 - 121
Ashrae Journal - December 2008 - 122
Ashrae Journal - December 2008 - 123
Ashrae Journal - December 2008 - 124
Ashrae Journal - December 2008 - 125
Ashrae Journal - December 2008 - Special Products
Ashrae Journal - December 2008 - 127
Ashrae Journal - December 2008 - 128
Ashrae Journal - December 2008 - Feature Indices
Ashrae Journal - December 2008 - 130
Ashrae Journal - December 2008 - 131
Ashrae Journal - December 2008 - 132
Ashrae Journal - December 2008 - Classified Advertising
Ashrae Journal - December 2008 - 134
Ashrae Journal - December 2008 - 135
Ashrae Journal - December 2008 - Advertising Index
Ashrae Journal - December 2008 - Cover3
Ashrae Journal - December 2008 - Cover4
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