ASHRAE Journal - July 2021 - 44

TECHNICAL FEATURE
can their importance be underestimated. Constant
monitoring and fine-tuning until the systems finally
achieve the potential savings often takes longer than
anticipated, especially during the present COVID-19
environment.
This project or parts of it can be implemented in facilities
with chillers and simultaneous heating loads. Many
systems can be redesigned to use condenser water for
heating; heat recovery chillers can provide 105°F to
110°F (40.6°C to 43.3°C) hot water efficiently (in lieu of
a boiler). The first step is taking a hard look at how systems
are operating, deciding if setpoints are optimal for
the time of year and determining where energy is being
wasted.
Acknowledgments
The authors wish to thank the following people: Daniel
Driver, Member ASHRAE, Trane Technologies, Portland,
Ore., for assistance modeling chiller performance with
and without variable speed drives; and Malcolm Shuey,
P.E., Member ASHRAE, Fox Engineering Co., Oregon
City, Ore., for assistance modeling cooling tower and
plate/frame heat exchanger performance.
References
1. Cohen, R. 2003. " Energy efficiency for semiconductor
manufacturing facilities. " ASHRAE Journal 45(8):28- 34.
2. State of Oregon, Building Codes Division. 2019. " 2019 Oregon
Zero Energy Ready Commercial Code, " Chap. 5. State of Oregon,
Building Codes Division.
3. PNUCC. 2014. " Carbon Emissions: A Northwest
Perspective. " Pacific Northwest Utilities Conference Committee,
presented at Northwest Power & Conservation Council.
https://tinyurl.com/r956nn2h
Bibliography
Reed, M., W. Robinson, N. Hawes. 2019. " Dedicated heat recovery
virtual chiller provides savings for NASA. " ASHRAE Journal 61(1).
Wang, L., S. Yasuko, S. Bowman, D. Claridge. 2018.
" Commissioning an existing heat recovery chiller system. " ASHRAE
Journal 60(12).
Dubov, I. 2005. " Heat recovery, energy savings for semiconductor
plant. " ASHRAE Journal 47(12): 56-60.
Dubov, I. 2003. " Chilled water plant efficiency. " ASHRAE Journal
45(6):37 -40.
ASHRAE eLearning
The Complete HVAC&R Learning Experience
No Travel Required * Learn When Convenient
Access When Needed * Track Performance
CORPORATE PROGRAMS AVAILABLE
For the complete course catalog visit
ashrae.org/elearning
or contact elearning@ashrae.org
44
ASHRAE JOURNAL ashrae.org J U LY 2 0 2 1
https://www.tinyurl.com/r956nn2h http://www.ashrae.org/elearning http://www.shortridge.com http://www.ashrae.org

ASHRAE Journal - July 2021

Table of Contents for the Digital Edition of ASHRAE Journal - July 2021

Contents
ASHRAE Journal - July 2021 - Intro
ASHRAE Journal - July 2021 - Cover1
ASHRAE Journal - July 2021 - Cover2
ASHRAE Journal - July 2021 - 1
ASHRAE Journal - July 2021 - Contents
ASHRAE Journal - July 2021 - 3
ASHRAE Journal - July 2021 - 4
ASHRAE Journal - July 2021 - 5
ASHRAE Journal - July 2021 - 6
ASHRAE Journal - July 2021 - 7
ASHRAE Journal - July 2021 - 8
ASHRAE Journal - July 2021 - 9
ASHRAE Journal - July 2021 - 10
ASHRAE Journal - July 2021 - 11
ASHRAE Journal - July 2021 - 12
ASHRAE Journal - July 2021 - 13
ASHRAE Journal - July 2021 - 14
ASHRAE Journal - July 2021 - 15
ASHRAE Journal - July 2021 - 16
ASHRAE Journal - July 2021 - 17
ASHRAE Journal - July 2021 - 18
ASHRAE Journal - July 2021 - 19
ASHRAE Journal - July 2021 - 20
ASHRAE Journal - July 2021 - 21
ASHRAE Journal - July 2021 - 22
ASHRAE Journal - July 2021 - 23
ASHRAE Journal - July 2021 - 24
ASHRAE Journal - July 2021 - 25
ASHRAE Journal - July 2021 - 26
ASHRAE Journal - July 2021 - 27
ASHRAE Journal - July 2021 - 28
ASHRAE Journal - July 2021 - 29
ASHRAE Journal - July 2021 - 30
ASHRAE Journal - July 2021 - 31
ASHRAE Journal - July 2021 - 32
ASHRAE Journal - July 2021 - 33
ASHRAE Journal - July 2021 - 34
ASHRAE Journal - July 2021 - 35
ASHRAE Journal - July 2021 - 36
ASHRAE Journal - July 2021 - 37
ASHRAE Journal - July 2021 - 38
ASHRAE Journal - July 2021 - 39
ASHRAE Journal - July 2021 - 40
ASHRAE Journal - July 2021 - 41
ASHRAE Journal - July 2021 - 42
ASHRAE Journal - July 2021 - 43
ASHRAE Journal - July 2021 - 44
ASHRAE Journal - July 2021 - 45
ASHRAE Journal - July 2021 - 46
ASHRAE Journal - July 2021 - 47
ASHRAE Journal - July 2021 - 48
ASHRAE Journal - July 2021 - 49
ASHRAE Journal - July 2021 - 50
ASHRAE Journal - July 2021 - 51
ASHRAE Journal - July 2021 - 52
ASHRAE Journal - July 2021 - 53
ASHRAE Journal - July 2021 - 54
ASHRAE Journal - July 2021 - 55
ASHRAE Journal - July 2021 - 56
ASHRAE Journal - July 2021 - 57
ASHRAE Journal - July 2021 - 58
ASHRAE Journal - July 2021 - 59
ASHRAE Journal - July 2021 - 60
ASHRAE Journal - July 2021 - 61
ASHRAE Journal - July 2021 - 62
ASHRAE Journal - July 2021 - 63
ASHRAE Journal - July 2021 - 64
ASHRAE Journal - July 2021 - 65
ASHRAE Journal - July 2021 - 66
ASHRAE Journal - July 2021 - 67
ASHRAE Journal - July 2021 - 68
ASHRAE Journal - July 2021 - 69
ASHRAE Journal - July 2021 - 70
ASHRAE Journal - July 2021 - 71
ASHRAE Journal - July 2021 - 72
ASHRAE Journal - July 2021 - 73
ASHRAE Journal - July 2021 - 74
ASHRAE Journal - July 2021 - 75
ASHRAE Journal - July 2021 - 76
ASHRAE Journal - July 2021 - 77
ASHRAE Journal - July 2021 - 78
ASHRAE Journal - July 2021 - 79
ASHRAE Journal - July 2021 - 80
ASHRAE Journal - July 2021 - 81
ASHRAE Journal - July 2021 - 82
ASHRAE Journal - July 2021 - 83
ASHRAE Journal - July 2021 - 84
ASHRAE Journal - July 2021 - 85
ASHRAE Journal - July 2021 - 86
ASHRAE Journal - July 2021 - 87
ASHRAE Journal - July 2021 - 88
ASHRAE Journal - July 2021 - 89
ASHRAE Journal - July 2021 - 90
ASHRAE Journal - July 2021 - 91
ASHRAE Journal - July 2021 - 92
ASHRAE Journal - July 2021 - 93
ASHRAE Journal - July 2021 - 94
ASHRAE Journal - July 2021 - 95
ASHRAE Journal - July 2021 - 96
ASHRAE Journal - July 2021 - 97
ASHRAE Journal - July 2021 - 98
ASHRAE Journal - July 2021 - 99
ASHRAE Journal - July 2021 - 100
ASHRAE Journal - July 2021 - 101
ASHRAE Journal - July 2021 - 102
ASHRAE Journal - July 2021 - 103
ASHRAE Journal - July 2021 - 104
ASHRAE Journal - July 2021 - 105
ASHRAE Journal - July 2021 - 106
ASHRAE Journal - July 2021 - 107
ASHRAE Journal - July 2021 - 108
ASHRAE Journal - July 2021 - 109
ASHRAE Journal - July 2021 - 110
ASHRAE Journal - July 2021 - 111
ASHRAE Journal - July 2021 - 112
ASHRAE Journal - July 2021 - Cover3
ASHRAE Journal - July 2021 - Cover4
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