ASHRAE Journal - June 2012 - 80
2012 Technology Award Case Studies
Four Heat Pumps Fresh Air Energy Recovery and Heating Four Heat Pumps Fresh Air Dehumidifying
Office Air Conditioning 10 Geothermal Wells Vestibules Heating 10 Geothermal Wells Radiant Cooling
Office Air Conditioning Vestibules Heating
Figure 4: Heat pump operation – cooling mode (summer).
Figure 5: Heat pump operation – heating mode (winter).
RSI Walls Roof Glazing 5.28 7.04 0.704 R imp 30 40 4 Code R imp R-17 R-19.6 R-2.7
is sufficient. Occupancy sensors in small spaces shut off the lighting when not in use. Energy simulations were carried out using an EE-4 interface software with DOE-2 in the background. Table 2 presents the energy consumption per use. Table 3 shows measured annual energy savings of 54% and cost savings of 57%. Additional energy-efficiency measures include power pipe heat recovery on shower drains, solar domestic hot water system, presence sensors controlling heating in every closed room, and artificial lighting control based on daylighting, 75% total energy efficiency recovery unit on all exhausted air. Unpacked products for the store bring pollutants into the occupied zone. Also, racking impedes good air distribution when supplied from the ceiling. For this reason, it was decided to supply the air at floor level with displacement diffusers. Indoor air quality was tested during the early fit-up and showed an acceptable indoor air quality level, in spite of a
Reference Building kWh January February March April May June July August September October November December 106,496 90,562 78,962 53,239 46,431 49,293 53,739 52,403 45,040 52,885 67,039 95,840 791,929 Savings kW 377.1 358.8 301.3 238.2 185.2 143.3 146.7 144.4 141.7 233.5 269.8 314.8 $ 9,817.95 8,861.34 7,571.18 5,575.87 4,559.91 4,124.42 4,368.41 4,277.91 3,913.23 5,496.91 6,616.05 8,505.38 73,688.55 kWh 28,527 25,065 26,263 24,868 27,265 29,180 31,670 31,097 27,234 26,081 24,270 26,856 328,376 59%
Table 1: Building Insulation.
Reference kWh 251,279 13,615 309,535 50,378 84,279 80,103 2,739 791,928 Simulated kWh 163,552 14,976 43,163 53,946 17,229 32,771 2,739 328,376
Area Light Miscellaneous Equipment Space Heating Space Cooling Pumps and Heat Rejection Fans Domestic Hot Water
Table 2: Energy consumption per usage.
Measured $ 2,515.50 2,304.65 2,199.49 2,082.17 2,271.06 2,416.95 2,603.27 2,527.98 2,335.53 2,196.75 2,060.87 2,302.55 27,816.77 62% kWh 26,669 24,088 24,645 22,371 30,752 33,685 40,807 41,561 36,000 28,990 26,743 27,776 364,087 54% kW 88.0 87.1 90.0 86.4 97.4 100.4 104.1 103.6 107.0 100.0 98.3 98.3 $ 2,372.16 2,244.95 2,308.77 2,158.96 2,680.60 2,851.73 3,219.10 3,246.00 3,043.68 2,636.95 2,513.89 2,559.96 31,836.74 57%
Simulation Data kW 92.5 88.3 76.5 72.4 78.5 83 88.6 84.9 83.4 76.9 72.8 82.2
Table 3: Monthly energy consumption. 80 ASHRAE Journal ashrae.org June 2012
ASHRAE Journal - June 2012
Table of Contents for the Digital Edition of ASHRAE Journal - June 2012
Contents
Commentary
Industry News
Letters
Meetings and Shows
Feature Articles
Minimum Outdoor Airflow Using the IAQ Procedure
Basics of Atrium Smoke Control
Long-Term Commercial GSHP Performance Part 1: Project Overview and Loop Circuit Types
Optimizing Design & Control of Chilled Water Plants Part 5: Optimized Control Sequences
Technology Award Case Studies:
Retail in Cold Climate
Rethinking Hospital Design
Standing Columns
Refrigeration Applications
Emerging Technologies
Engineering Applications
Washington Report
Products
IAQ Applications
Special Products
Classified Advertising
Advertisers Index
ASHRAE Journal - June 2012 - Intro
ASHRAE Journal - June 2012 - Cover1
ASHRAE Journal - June 2012 - Cover2
ASHRAE Journal - June 2012 - 1
ASHRAE Journal - June 2012 - 2
ASHRAE Journal - June 2012 - Contents
ASHRAE Journal - June 2012 - Commentary
ASHRAE Journal - June 2012 - 5
ASHRAE Journal - June 2012 - Industry News
ASHRAE Journal - June 2012 - 7
ASHRAE Journal - June 2012 - 8
ASHRAE Journal - June 2012 - 9
ASHRAE Journal - June 2012 - 10
ASHRAE Journal - June 2012 - 11
ASHRAE Journal - June 2012 - 12
ASHRAE Journal - June 2012 - 13
ASHRAE Journal - June 2012 - Letters
ASHRAE Journal - June 2012 - 15
ASHRAE Journal - June 2012 - 16
ASHRAE Journal - June 2012 - 17
ASHRAE Journal - June 2012 - 18
ASHRAE Journal - June 2012 - 19
ASHRAE Journal - June 2012 - 20
ASHRAE Journal - June 2012 - 21
ASHRAE Journal - June 2012 - 22
ASHRAE Journal - June 2012 - 23
ASHRAE Journal - June 2012 - Meetings and Shows
ASHRAE Journal - June 2012 - 25
ASHRAE Journal - June 2012 - Minimum Outdoor Airflow Using the IAQ Procedure
ASHRAE Journal - June 2012 - 27
ASHRAE Journal - June 2012 - 28
ASHRAE Journal - June 2012 - 29
ASHRAE Journal - June 2012 - 30
ASHRAE Journal - June 2012 - 31
ASHRAE Journal - June 2012 - 32
ASHRAE Journal - June 2012 - 33
ASHRAE Journal - June 2012 - 34
ASHRAE Journal - June 2012 - 35
ASHRAE Journal - June 2012 - Basics of Atrium Smoke Control
ASHRAE Journal - June 2012 - 37
ASHRAE Journal - June 2012 - 38
ASHRAE Journal - June 2012 - 39
ASHRAE Journal - June 2012 - 40
ASHRAE Journal - June 2012 - 41
ASHRAE Journal - June 2012 - 42
ASHRAE Journal - June 2012 - 43
ASHRAE Journal - June 2012 - 44
ASHRAE Journal - June 2012 - 45
ASHRAE Journal - June 2012 - 46
ASHRAE Journal - June 2012 - 47
ASHRAE Journal - June 2012 - Long-Term Commercial GSHP Performance Part 1: Project Overview and Loop Circuit Types
ASHRAE Journal - June 2012 - 49
ASHRAE Journal - June 2012 - 50
ASHRAE Journal - June 2012 - 51
ASHRAE Journal - June 2012 - 52
ASHRAE Journal - June 2012 - 53
ASHRAE Journal - June 2012 - 54
ASHRAE Journal - June 2012 - 55
ASHRAE Journal - June 2012 - Optimizing Design & Control of Chilled Water Plants Part 5: Optimized Control Sequences
ASHRAE Journal - June 2012 - 57
ASHRAE Journal - June 2012 - 58
ASHRAE Journal - June 2012 - 59
ASHRAE Journal - June 2012 - 60
ASHRAE Journal - June 2012 - 61
ASHRAE Journal - June 2012 - 62
ASHRAE Journal - June 2012 - 63
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ASHRAE Journal - June 2012 - 65
ASHRAE Journal - June 2012 - 66
ASHRAE Journal - June 2012 - 67
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ASHRAE Journal - June 2012 - 70
ASHRAE Journal - June 2012 - 71
ASHRAE Journal - June 2012 - 72
ASHRAE Journal - June 2012 - 73
ASHRAE Journal - June 2012 - 74
ASHRAE Journal - June 2012 - 75
ASHRAE Journal - June 2012 - Retail in Cold Climate
ASHRAE Journal - June 2012 - 77
ASHRAE Journal - June 2012 - 78
ASHRAE Journal - June 2012 - 79
ASHRAE Journal - June 2012 - 80
ASHRAE Journal - June 2012 - 81
ASHRAE Journal - June 2012 - 82
ASHRAE Journal - June 2012 - 83
ASHRAE Journal - June 2012 - Rethinking Hospital Design
ASHRAE Journal - June 2012 - 85
ASHRAE Journal - June 2012 - 86
ASHRAE Journal - June 2012 - 87
ASHRAE Journal - June 2012 - 88
ASHRAE Journal - June 2012 - 89
ASHRAE Journal - June 2012 - 90
ASHRAE Journal - June 2012 - 91
ASHRAE Journal - June 2012 - 92
ASHRAE Journal - June 2012 - 93
ASHRAE Journal - June 2012 - Refrigeration Applications
ASHRAE Journal - June 2012 - 95
ASHRAE Journal - June 2012 - Emerging Technologies
ASHRAE Journal - June 2012 - 97
ASHRAE Journal - June 2012 - 98
ASHRAE Journal - June 2012 - 99
ASHRAE Journal - June 2012 - Engineering Applications
ASHRAE Journal - June 2012 - 101
ASHRAE Journal - June 2012 - 102
ASHRAE Journal - June 2012 - Washington Report
ASHRAE Journal - June 2012 - Products
ASHRAE Journal - June 2012 - 105
ASHRAE Journal - June 2012 - IAQ Applications
ASHRAE Journal - June 2012 - 107
ASHRAE Journal - June 2012 - 108
ASHRAE Journal - June 2012 - Special Products
ASHRAE Journal - June 2012 - 110
ASHRAE Journal - June 2012 - Classified Advertising
ASHRAE Journal - June 2012 - Advertisers Index
ASHRAE Journal - June 2012 - Cover3
ASHRAE Journal - June 2012 - Cover4
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