ASHRAE Journal - October 2023 - 59
TECHNICAL FEATURE
the models used. The energy equation was
converged carefully, and monitoring points
were used to ensure steady solution.
The results of the numerical model with the
k-ε model were compared to the experimental
measurements.35 The results show that there
is good agreement of vertical temperature
stratifi cations with the corresponding
values of temperature stratifi cations in the
experimental studies35 (Figure 4).
Results and Discussion
A detailed analysis on the energy consumption
comparing AHU and ACB is presented in
this section. The system capacity and power
consumption are determined. System capacity
includes the capacity of the AHU, main pump, chiller;
and primary AHU, main pump, chilled beam pump,
chiller. Likewise, the power consumption includes
the equipment involved in the system, and analysis is
performed to determine which system gives a better
TABLE 1 Equipment schedule Case A:
Typical system total power input at full-load condition using AHU.
UNIT
Chiller (346 kW)
Main Chilled Water Pump (14.9 L/s, 40 m)
AHU (3,980 L/s)
Total
TABLE 2 Equipment schedule Case B:
Typical system total power input at full-load condition using ACB.
UNIT
Chiller (301 kW)
Main Chilled Water Pump (13 L/s, 40 m)
Chilled Beam Pump (3.78 L/s, 20 m)
Primary AHU (3,980 L/s)
Total
1
1
1
1
11
3
7.5
1
1
3
11
7.5
QUANTITY UNIT POWER (kW) TOTAL POWER (kW)
106.1
106.1
11
22.5
139.6 kW
QUANTITY UNIT POWER (kW) TOTAL POWER (kW)
83.6
83.6
11
3
7.5
105.1 kW
savings. The cooling load extracted from the report for
the simulated building is 312.8 kW (1 million Btu/h) with
total supply of fresh air of 11 496 L/s (24,359 cfm) where:
* Case A (AHU): The selected supply AHU with
total fl ow rate of 11 496 L/s (24,359 cfm), main chilled
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O CTO B E R 2 0 2 3 ashrae.org ASHRAE JOURNAL
59
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http://www.ashrae.org
ASHRAE Journal - October 2023
Table of Contents for the Digital Edition of ASHRAE Journal - October 2023
Table of Contents
ASHRAE Journal - October 2023 - Intro
ASHRAE Journal - October 2023 - Cover1
ASHRAE Journal - October 2023 - Cover2
ASHRAE Journal - October 2023 - 1
ASHRAE Journal - October 2023 - Table of Contents
ASHRAE Journal - October 2023 - 3
ASHRAE Journal - October 2023 - 4
ASHRAE Journal - October 2023 - 5
ASHRAE Journal - October 2023 - 6
ASHRAE Journal - October 2023 - 7
ASHRAE Journal - October 2023 - 8
ASHRAE Journal - October 2023 - 9
ASHRAE Journal - October 2023 - 10
ASHRAE Journal - October 2023 - 11
ASHRAE Journal - October 2023 - 12
ASHRAE Journal - October 2023 - 13
ASHRAE Journal - October 2023 - 14
ASHRAE Journal - October 2023 - 15
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ASHRAE Journal - October 2023 - 17
ASHRAE Journal - October 2023 - 18
ASHRAE Journal - October 2023 - 19
ASHRAE Journal - October 2023 - 20
ASHRAE Journal - October 2023 - 21
ASHRAE Journal - October 2023 - 22
ASHRAE Journal - October 2023 - 23
ASHRAE Journal - October 2023 - 24
ASHRAE Journal - October 2023 - 25
ASHRAE Journal - October 2023 - 26
ASHRAE Journal - October 2023 - 27
ASHRAE Journal - October 2023 - 28
ASHRAE Journal - October 2023 - 29
ASHRAE Journal - October 2023 - 30
ASHRAE Journal - October 2023 - 31
ASHRAE Journal - October 2023 - 32
ASHRAE Journal - October 2023 - 33
ASHRAE Journal - October 2023 - 34
ASHRAE Journal - October 2023 - 35
ASHRAE Journal - October 2023 - 36
ASHRAE Journal - October 2023 - 37
ASHRAE Journal - October 2023 - 38
ASHRAE Journal - October 2023 - 39
ASHRAE Journal - October 2023 - 40
ASHRAE Journal - October 2023 - 41
ASHRAE Journal - October 2023 - 42
ASHRAE Journal - October 2023 - 43
ASHRAE Journal - October 2023 - 44
ASHRAE Journal - October 2023 - 45
ASHRAE Journal - October 2023 - 46
ASHRAE Journal - October 2023 - 47
ASHRAE Journal - October 2023 - 48
ASHRAE Journal - October 2023 - 49
ASHRAE Journal - October 2023 - 50
ASHRAE Journal - October 2023 - 51
ASHRAE Journal - October 2023 - 52
ASHRAE Journal - October 2023 - 53
ASHRAE Journal - October 2023 - 54
ASHRAE Journal - October 2023 - 55
ASHRAE Journal - October 2023 - 56
ASHRAE Journal - October 2023 - 57
ASHRAE Journal - October 2023 - 58
ASHRAE Journal - October 2023 - 59
ASHRAE Journal - October 2023 - 60
ASHRAE Journal - October 2023 - 61
ASHRAE Journal - October 2023 - 62
ASHRAE Journal - October 2023 - 63
ASHRAE Journal - October 2023 - 64
ASHRAE Journal - October 2023 - HR1
ASHRAE Journal - October 2023 - HR2
ASHRAE Journal - October 2023 - HR3
ASHRAE Journal - October 2023 - HR4
ASHRAE Journal - October 2023 - HR5
ASHRAE Journal - October 2023 - HR6
ASHRAE Journal - October 2023 - HR7
ASHRAE Journal - October 2023 - HR8
ASHRAE Journal - October 2023 - HR9
ASHRAE Journal - October 2023 - HR10
ASHRAE Journal - October 2023 - HR11
ASHRAE Journal - October 2023 - HR12
ASHRAE Journal - October 2023 - HR13
ASHRAE Journal - October 2023 - HR14
ASHRAE Journal - October 2023 - HR15
ASHRAE Journal - October 2023 - HR16
ASHRAE Journal - October 2023 - HR17
ASHRAE Journal - October 2023 - HR18
ASHRAE Journal - October 2023 - HR19
ASHRAE Journal - October 2023 - HR20
ASHRAE Journal - October 2023 - 65
ASHRAE Journal - October 2023 - 66
ASHRAE Journal - October 2023 - 67
ASHRAE Journal - October 2023 - 68
ASHRAE Journal - October 2023 - 69
ASHRAE Journal - October 2023 - 70
ASHRAE Journal - October 2023 - 71
ASHRAE Journal - October 2023 - 72
ASHRAE Journal - October 2023 - 73
ASHRAE Journal - October 2023 - 74
ASHRAE Journal - October 2023 - 75
ASHRAE Journal - October 2023 - 76
ASHRAE Journal - October 2023 - 77
ASHRAE Journal - October 2023 - 78
ASHRAE Journal - October 2023 - 79
ASHRAE Journal - October 2023 - 80
ASHRAE Journal - October 2023 - Cover3
ASHRAE Journal - October 2023 - Cover4
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