制冷原理與技術

ADSORPTIONREFRIGERATIONWANG

RuzhuSJTU-IRC制

冷

原

理

與

技

術1.Solidsorption

conceptse-Adsorptionadsorbent-adsorbatePhysical

adsorptionzeolite-water,silicagel-water,activatedcarbon-methanol/ammoniaChemical

adsorptionCaCl2-ammonia,Metalhydridhydrogen制

冷

原

理

與

技

術Structureof

adsorbent-zeolite制

冷

原

理

與

技

術2、Adsorption

isobars,isotherms

andisotersisx

f

p

,T

Adsorption

systemTx

f

p

px

f

T

xp

f

T

IsothermsIsobarsIsotersis020 40 60 80 100 120 14010001001010.050.10.60 20

406080100 12014010001001010.260.02(a)Activatedcarbon

fibre-methanolFig.2-135p-T-x

diagram(b)Activated

carbon-methanolFig.2-151p-T-xdiagramofLiBr-waterSingleeffectPcx PexconcxdilTa Tg T,

oCFig.2-137:AdsorptionIsobarsAdsorption：Ta、Pe;Desorption:Tg、Pc制

冷

原

理

與

技

術3、Adsorption

Refrigeration

Cycle1、Adsorption

refrigeration

workingpairPhysical

adsorptionzeolite-water,silicagel-water,activatedcarbon-methanol/ammoniaChemical

adsorptionCaCl2-ammonia,Metal

hydride-hydrogen3、Adsorption

Refrigeration

Cycle（1）Basic

CycleFig.2-154Solaricemakerbasedonbasic

cyclelnPPcPeQcondQevaQadQhQc56142Qg

3Te

TgTaTc

Ta

Tg2-1/T(1/K)飽和制冷劑XconcXdilFig.2-155 P-T-xdiagramofadsorptionrefrigeration

cycleLnP

ABP

cbQ

gcbQ

gcQ

regQ

hQ

cQ

cQ

hQ

regPe

adadQ

ad

Q

ad

T

a2 T

g1T

a1 T

g2T

a2 T

g1T

a1 T

g2-1

/TFig.2-155Twobedsheatrecovery

cycle（2）HeatRecoveryAdsorptionRefrigeration

Cycle4.ApplicationsofAdsorption

RefrigerationFig.2-157Adsorptionchilledwatersystem

drivenbyhotwater(JapanTokyoGasCo.

Ltd)Silica

gel-waterQf=70-352kWHotwaterdriven

:75-70℃Coolingwater:29-33℃Chilled

water:14-9℃COP：0.630

oC熱源溫差驅(qū)動;

60

oC COP-0.3;85oC

COP-0.4干盤管工況

COP-0.5制

冷

原

理

與

技

術regeneratorchimneycondensercheckvalve

Aadsorberexhaustgas

inletvaccum

valvenoser

inletlocomotive

roofexhaustgas

outletcheckvalve

Bcheckvalve

C

noser

inletpumpdrivercabinfan

coilevaporator

gas/air

outletadsorbercondensercondensercoolingair

inletcoolingair

inletchimney內(nèi)燃機車余熱驅(qū)動吸附式空調(diào)器上海交大,2001制

冷

原

理

與

技

術?Zeolite-water?4-6kWAC

cooling?Temp.differencebetweencabinandoutside

8oC?Onesingleadsorbersystem+watercold

storage冷媒水泵儲液器恒溫水箱燃燒器引風機蒸發(fā)/蓄冷器吸附床蓄冷水泵鼓風機冷卻水

冷凝器Fig.2-159Laboratorytest

unitAdsorberEvap/Receiver/Cold

storage制

冷

原

理

與

技

術Solarcoldboxforvaccine

preservation(英國

Universityof

Warwick)

國際衛(wèi)生組織向發(fā)展中國家推薦的用于疫苗冷藏的太陽能吸附制冷機制

冷

原

理

與

技

術SolarIce

maker（CNRS、French

Company

BLM)Solarcollector：1

m2adsorptionpair：activatedcarbon-methanol制

冷

原

理

與

技

術（5）AdsorptionColdStorage0.150.10.0500.250.20.3050100150200250T

(℃)x

(kg/kg)Ts=12.5℃Ts=34℃Ts=45℃dxqstorx1)h

fg

(x0制

冷

原

理

與

技

術qc

(x2x0

x1x1)h

fgx1

x2maqaddx

ma

(c

pa

xcpr)dT

mbcpb

dTdx/dt

k1

exp(

k2 /

T

)

(xeq

x0

)制

冷

原

理

與

技

術-1/TABCDFT0TPcondx3Ln(p)PevJ HKIGExfxhx1

xj00.20.40.60.8

30507013