ASHRAE Journal - May 2009 - 40

• Skylights. Careful integration is necessary to incorporate skylights into the lighting plan. Consider tubular skylights to simplify integration. • Daylighting Controls. Select daylight dimming controls that can be verified by the vendor to operate as indicated. Best results were with continuously dimming ballasts with a pull timer to temporarily close off skylighting. Require in the specification that these controls be commissioned. • HVAC. Downsize auxiliary strip heat on heat pumps to prevent excessive inefficient morning use of inefficient resistance heating. Use outdoor temperature control to lock out strip heat above specified temperatures, and use ramp-up thermostats to reduce strip heat during morning warm-up. This also helps to avoid thermostat “overshoot” during morning thermostat recovery. Warn HVAC contractors of the exact specification to avoid confusion and compliance issues. • Ducts. The ducts in all experimental portables were sealed with mastic, reducing leakage rates substantially (see specifications). The ducts were located in the insulated, ventilated attic in the control and experimental portables for the North Carolina and New York portables. The Florida PERC has spray foam insulation at the roof deck providing sealed and “conditioned” space for the ductwork. Based on comparison with the North Carolina PERC, this construction/insulation technique appeared to yield superior performance. • Controls Integration. Verify that the thermostats are compatible with occupancy controls. Also verify compressor operation in heating mode and termination of auxiliary strip heat after temperature recovery. Commission occupancy controls for lighting and HVAC. • Roof/Plenum Insulation. Evidence from the New York project suggests that acoustic ceiling tiles with a ventilated plenum leads to leaky buildings with excessive heating and cooling. Either sheetrock ceiling or sealed attic/plenum construction with an insulated roof deck is preferred. The Florida PERC with an insulated foam roof deck under a highly reflective roof with a sealed plenum was significantly tighter than the other portables. It also had the duct system within the insulated envelope under a reflective roof, leading to much lower heating and cooling energy use relative to the other types. • Form Follows Function. Although the typical relocatable classrooms are stigmatized by their metal or T1-11 clad, square, low roof, box reputation, this project was funded to primarily research the effects of energy efficiency and indoor air quality improvements. It was also important to maintain a duplicate design to ensure the control and experimental models were compared accurately. This research is also relevant to “learning cottage,” or vernacular architecture, for future modular classroom construction. However, forms are limited if cost-effective fabrication is to remain off site in a controlled factory. S in ALARM INDICATION DEVICES MONITORING ES I re qu ali ty sta rts GAS SPECIFIC INFRARED SENSOR the SELF-CONTAINED BREATHING APPARATUS SHERLOCK CONTROLS 1040 Fox Chase Industrial Drive Arnold, MO 63010 Phone: (636) 282-0011 Web:www.Genesis-International.com FAX: (636) 282-2722 Email:mail@genesis-international.com W GENESIS INTERNATIONAL, INC. he GE N The SHERLOCK Refrigerant Gas Monitoring System is an extensive family of monitoring panels, sensors, external alarms, and breathing apparatus designed to make any machine room code compliant. The SHERLOCK line includes electronic monitors with either two or three alarm levels. Each alarm level has two relay outputs for various functions including activating audio-visual alarm indication devices, energizing exhaust fans or notifying the building automation system. The SHERLOCK sensor modules utilize both solid state CMOS which meet most specifications and budget considerations or infrared (IR) sensor technology, when accuracy is extremely important. The IR will virtually eliminate all false alarming. SHERLOCK also can provide several varieties of Self Contained Breathing Apparatus to meet the requirements of most mechanical safety codes. www.info.hotims.com/25204-27 be gin nin SHERLOCK REFRIGERANT LEAK R-11 R-12 R-22 R-114 R-123 R-134A R-401A(MP39)R-401B(MP62) R-402A(HP80) R-404A(HP62) R-408A(FX10) R-409A(FX56) R-410A(Puron) R-500 R-502 R-507A(AZ50) R-717(Ammonia) Call the factory for list of additional refrigerants EVERYTHING FOR ASHRAE 15-2004 AND MECHANICAL CODE COMPLIANCE g! www.info.hotims.com/25204-4

ASHRAE Journal - May 2009

Table of Contents for the Digital Edition of ASHRAE Journal - May 2009

ASHRAE Journal - May 2009
Contents
Commentary
Industry News
Letters
Meetings and Shows
     Moving Air for Comfort
Feature Articles
     Lessons Learned in Portable Classrooms
     Using Time-of-Day Scheduling to Save Energy
     Equal Friction Solution for Duct Sizing
     Anniversary Feature: System Application and Design for School Air Conditioning
Building Sciences
InfoCenter
Emerging Technologies
Special Products
Classified Advertising
Advertising Index
ASHRAE Journal - May 2009 - ASHRAE Journal - May 2009
ASHRAE Journal - May 2009 - Cover2
ASHRAE Journal - May 2009 - 1
ASHRAE Journal - May 2009 - 2
ASHRAE Journal - May 2009 - Contents
ASHRAE Journal - May 2009 - 4
ASHRAE Journal - May 2009 - Commentary
ASHRAE Journal - May 2009 - 6
ASHRAE Journal - May 2009 - Industry News
ASHRAE Journal - May 2009 - 8
ASHRAE Journal - May 2009 - 9
ASHRAE Journal - May 2009 - 10
ASHRAE Journal - May 2009 - 11
ASHRAE Journal - May 2009 - Letters
ASHRAE Journal - May 2009 - 13
ASHRAE Journal - May 2009 - 14
ASHRAE Journal - May 2009 - 15
ASHRAE Journal - May 2009 - Meetings and Shows
ASHRAE Journal - May 2009 - 17
ASHRAE Journal - May 2009 - Feature Articles
ASHRAE Journal - May 2009 - 19
ASHRAE Journal - May 2009 - 20
ASHRAE Journal - May 2009 - 21
ASHRAE Journal - May 2009 - 22
ASHRAE Journal - May 2009 - 23
ASHRAE Journal - May 2009 - 24
ASHRAE Journal - May 2009 - 25
ASHRAE Journal - May 2009 - 26
ASHRAE Journal - May 2009 - 27
ASHRAE Journal - May 2009 - 28
ASHRAE Journal - May 2009 - 29
ASHRAE Journal - May 2009 -      Lessons Learned in Portable Classrooms
ASHRAE Journal - May 2009 - 31
ASHRAE Journal - May 2009 - 32
ASHRAE Journal - May 2009 - 33
ASHRAE Journal - May 2009 - 34
ASHRAE Journal - May 2009 - 35
ASHRAE Journal - May 2009 - 36
ASHRAE Journal - May 2009 - 37
ASHRAE Journal - May 2009 - 38
ASHRAE Journal - May 2009 - 39
ASHRAE Journal - May 2009 - 40
ASHRAE Journal - May 2009 - 41
ASHRAE Journal - May 2009 -      Using Time-of-Day Scheduling to Save Energy
ASHRAE Journal - May 2009 - 43
ASHRAE Journal - May 2009 - 44
ASHRAE Journal - May 2009 - 45
ASHRAE Journal - May 2009 - 46
ASHRAE Journal - May 2009 - 47
ASHRAE Journal - May 2009 - 48
ASHRAE Journal - May 2009 - 49
ASHRAE Journal - May 2009 -      Equal Friction Solution for Duct Sizing
ASHRAE Journal - May 2009 - 51
ASHRAE Journal - May 2009 - 52
ASHRAE Journal - May 2009 - 53
ASHRAE Journal - May 2009 - 54
ASHRAE Journal - May 2009 - 55
ASHRAE Journal - May 2009 -      Anniversary Feature: System Application and Design for School Air Conditioning
ASHRAE Journal - May 2009 - 57
ASHRAE Journal - May 2009 - 58
ASHRAE Journal - May 2009 - 59
ASHRAE Journal - May 2009 - 60
ASHRAE Journal - May 2009 - 61
ASHRAE Journal - May 2009 - 62
ASHRAE Journal - May 2009 - 63
ASHRAE Journal - May 2009 - 64
ASHRAE Journal - May 2009 - 64a
ASHRAE Journal - May 2009 - 64b
ASHRAE Journal - May 2009 - 65
ASHRAE Journal - May 2009 - 66
ASHRAE Journal - May 2009 - 67
ASHRAE Journal - May 2009 - 68
ASHRAE Journal - May 2009 - 69
ASHRAE Journal - May 2009 - 70
ASHRAE Journal - May 2009 - 71
ASHRAE Journal - May 2009 - 72
ASHRAE Journal - May 2009 - 73
ASHRAE Journal - May 2009 - Building Sciences
ASHRAE Journal - May 2009 - 75
ASHRAE Journal - May 2009 - 76
ASHRAE Journal - May 2009 - 77
ASHRAE Journal - May 2009 - 78
ASHRAE Journal - May 2009 - 79
ASHRAE Journal - May 2009 - InfoCenter
ASHRAE Journal - May 2009 - 81
ASHRAE Journal - May 2009 - 82
ASHRAE Journal - May 2009 - 83
ASHRAE Journal - May 2009 - 84
ASHRAE Journal - May 2009 - 85
ASHRAE Journal - May 2009 - 86
ASHRAE Journal - May 2009 - Emerging Technologies
ASHRAE Journal - May 2009 - 88
ASHRAE Journal - May 2009 - 89
ASHRAE Journal - May 2009 - 90
ASHRAE Journal - May 2009 - 91
ASHRAE Journal - May 2009 - Special Products
ASHRAE Journal - May 2009 - 93
ASHRAE Journal - May 2009 - Classified Advertising
ASHRAE Journal - May 2009 - 95
ASHRAE Journal - May 2009 - Advertising Index
ASHRAE Journal - May 2009 - Cover3
ASHRAE Journal - May 2009 - Cover4
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