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空調系統節能應用 PowerPoint PPT Presentation


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空調系統節能應用. 國立台北科技大學 蔡尤溪. 課程內容大綱. 空調系統設計之基礎 節能設計應有之規範 節能設計 考量與 方法 降低空調負載之方法 節能之運轉與管理 節能案例說明. 前言. 空調設備 包括冰水主機、水泵、風機、冷卻水塔風扇馬達,通常是建築最大耗電項目,也是電力尖峰需求之主因。. 前言. 如圖,某百貨 公司空調與照 明為主要用 電,約各佔 45% ,夏季時 空調卻約佔總 用電之 55% 。. 空調系統設計之基礎. 設計目標 — 耗能指標.

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空調系統節能應用

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3433386


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45%

55%


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  • EUI(Energy Utility Intensity) (kWh/m2yr)

  • DUI(Demand Utility IntensityW/m2)EUIDUI


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N/m2Nm/m3(J/m3)

    • (Watt) = (Pa) x

    • (m3/s) /


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  • () 5

  • ()1000kg/m320 1.20kg/m3

  • ()


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()(Refrigeration Ton, RT)

(2000 lb)(24)

1.0 RT = 12000 Btu/hr

1.0 RT = 3024 kcal/hr

1.0 RT = 3.515 kW


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  • (heat gain)(cooling load)

  • ()()


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  • ()


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(1%)

()()

34.6 26.8

34.0 27.3

34.2 27.7

33.2 27.1

33.1 26.3

32.0 26.7


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(a)()

(b)

(c)

(d)


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CNS 12575

CNS 12812

ARI 550/590


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(EER) kcal/h-W

(COP)

(EER) kcal/h-W

(COP)

<150RT

3.50

4.07

3.83

4.45

150RT

500RT

3.60

4.19

4.21

4.90

>500RT

4.00

4.65

4.73

5.50

<150RT

4.30

5.00

4.30

5.00

150RT<300RT

4.77

5.55

4.77

5.55

300RT

4.77

5.55

5.25

6.10

2.40

2.79

2.40

2.79


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4--

4--2300(25,000ft2)


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414000 L/s (30,000cfm)

(a)

(b)


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1400 L/s (3,000cfm)1/


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  • HVAC 50%

  • 300kPa (100ft)37kW(50hp)50%() 30%


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()

200RT

5.0kW (6.7hp)2/3/


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9400 L/s

20,000 cfm

1.9 kW/1000 L/s

1.2 hp/1000 cfm

2.7 kW/1000 L/s

1.7 hp/1000 cfm

9400 L/s

20,000 cfm

1.7 kW /1000 L/s

1.1 hp/1000 cfm

2.4 kW/1000 L/s

1.5 hp/1000 cfm


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(VAV)

VAV22kW(30hp)50%30%


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(VAV)

VAV(DDC)1/3


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--

70%2400L/s(5000cfm)50%50%50%


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--

HVAC


M 2 k w

Exterior

Ventilated

Attic

Unvented

Attic with Backloaded

Ceiling

Unvented Attic with Roof

Insulation

Unconditioned Space+

Indirectly Conditioned

Space**

Buried

R-1.06

R-1.06

R-1.06

R-.0.62

R-.0.62

-

R-.0.62

R-0.62

R-0.62

R-0.62

-

-

-

-

(m2.K/W)


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, cm

k

T= r{(l+t/r)K/k-1}

rin

K


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90


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90:

(a)

(b)


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(c)

(d)HVAC

(e)


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10%


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(VAV)0.75kW(1hp)


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40db(A)


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1.

2.15%

3.

4.

5.

6.


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COP

  • 3525COP=27.8

  • 1510COP=14.4

  • 10COP=9.6

  • 10COP=6.95

  • P 5COP=6.18

  • (75%)COP=4.6

  • (15%)EER=4.03(3.46kcal/h/W)


Integrated part load value

1992

1998

kW/RT

EER or

COP

IPLV0.17A0.39B0.33C0.11D

IPLV0.01A0.42B0.45C0.12D

A100%kW/ton EER COP

B75%kW/ton EER COP

C50%kW/ton EER COP

D25%kW/ton EER COP

-Integrated Part Load Value

ARI550/590 IPLV


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%


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27.5

0.0142 kg/kg

62%

15.3 kcal/kg

26.0

0.0105 kg/kg

50%

12.6 kcal/kg

32

0.0211kg/kg

70%

20.6 kcal/kg

70%


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Vrv v ariable r efrigerant v olume

VRV(Variable Refrigerant Volume)


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  • 4RT190L/S65%90%330W1.74kW/1000L/s

  • --(Fan Coil)--AHU--VAV----


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VAV


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(VAV)

Power Q3


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AHU ()


Variable water volume

(variable water volume)


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  • 95%

  • 50%20%


  • 3433386

    (Danfoss)


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    1.

    2.

    3.(reset) 1.02.0%

    4. ( )3


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    COP=4.1992(0.84kW/RT)COP=4.65(0.76kW/RT)0.80kW/RT1.2 kW/RT33.3


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    --


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    COP=/


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    ?

    • EnergyNT/kWh, CO2/kWh? CO2

    • Environment,

    • Efficiency,


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    (BEMS)


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    EUI

    EUI


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    (2002/7/17/3)


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    28

    (kWh)


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    28

    (kW)

    ()


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    • 92

    • :13607 m2

    • 190RT *1120RT *1

    • AHU24

    • FCU104


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    -

    VAV


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    -


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    -


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    -

    ()


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    -


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    -


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    -


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    24%


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    39%


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    45%


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    2,744kWh/D1,375kWh/D

    1,399kWh50%


    3433386

    • 45%24%

    • 911,067,046 kWh256,091 kWh

    • 2.2563,400/

    • 0.687kg0.687kg/kWh256,091kWh/175,935kg/


    Doe 2 1

    33.26M17.25M5542m2

    8:00AM18:00PM12:00AM~ 13:00PM 50%13:00PM~ 14:00PM 75%

    120RT

    18.17 l/s16.5 m7.5 hp9.46 l/s21 m5 hp 17.41 l/s21 m7.5 hp

    22.71 l/s27 m15 hp

    3 hp

    82,500 lps

    --DOE 2.1


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    71 91 kwh m 2 year

    --71.91 kWh/m2/year


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    • 10 lps15 lps 11.5%2.9%

    • 10 lps5 lps 12%3%


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    COP


    Cop cop 0 1 1

    COP-- COP0.11%


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