EVALUATION OF DIFFERENT EVAPORATOR DESIGNS AND CONCEPTS FOR SORPTION PROCESSES USING WATER AS REFRIGERANT

被引：0

作者：

Schnabel, Lena ^{[1
]}

Volmer, Rahel ^{[1
]}

Warlo, Alexander ^{[1
]}

Schossig, Peter ^{[1
]}

机构：

[1] Fraunhofer ISE, D-79110 Freiburg, Germany

来源：

13TH IIR GUSTAV LORENTZEN CONFERENCE ON NATURAL REFRIGERANTS: NATURAL REFRIGERANT SOLUTIONS FOR WARM CLIMATE COUNTRIES | 2018年

关键词：

refrigeration; water; sorption; evaporation;

D O I：

10.18462/iir.gl.2018.1405

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Evaporation characteristics of water at low temperatures and pressures (5-30 degrees C, 870 - 4200 Pa) are of great interest for sorption processes. The work presents the experimental characterization of the evaporation performance measured on different market available and newly developed heat exchanger designs. Designs, experimental data, and performance evaluation criteria are described. As a central evaluation values the heat transfer coefficient and the volumetric UA-value are discussed for the different scales of samples. The focus is led on an alternating operation mode, where the same heat exchanger is used as condenser first and then changed to evaporation. Additionally the influence of a flooded operation is analyzed. The results illustrate that different designs and operation modes result into different time dependent performances. High UA-values are reached with the open, unflooded operation mode. Nevertheless the mass of refrigerant kept in the heat exchanger can be increased strongly by flooded operation.

引用

页码：1403 / 1410

页数：8

共 12 条

[1] Experimental study of a solid adsorption cooling system using flat-tube heat exchangers as adsorption bed [J].

Chang, W.-S. ;

Wang, C.-C. ;

Shieh, C.-C. .

APPLIED THERMAL ENGINEERING, 2007, 27 (13) :2195-2199

[2] Review of trends in solid sorption refrigeration and heat pumping technology [J].

Critoph, RE ;

Zhong, Y .

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING, 2005, 219 (E3) :285-300

[3] A review on adsorption heat pump: Problems and solutions [J].

Demir, Hasan ;

Mobedi, Moghtada ;

Ulku, Semra .

RENEWABLE & SUSTAINABLE ENERGY REVIEWS, 2008, 12 (09) :2381-2403

[4] Subatmospheric pressure boiling on a single nucleation site in narrow vertical spaces [J].

Giraud, Florine ;

Rulliere, Romuald ;

Toublanc, Cyril ;

Clausse, Marc ;

Bonjour, Jocelyn .

INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, 2016, 58 :1-10

[5] Experimental evidence of a new regime for boiling of water at subatmospheric pressure [J].

Giraud, Florine ;

Rulliere, Romuald ;

Toublanc, Cyril ;

Clausse, Marc ;

Bonjour, Jocelyn .

EXPERIMENTAL THERMAL AND FLUID SCIENCE, 2015, 60 :45-53

[6] Development of a modular zeolite-water heat pump [J].

Lang, R ;

Roth, M ;

Stricker, M ;

Westerfeld, T .

HEAT AND MASS TRANSFER, 1999, 35 (03) :229-234

[7] The impact of filling level resolved: Capillary-assisted evaporation of water for adsorption heat pumps [J].

Lanzerath, Franz ;

Seiler, Jan ;

Erdogan, Meltem ;

Schreiber, Heike ;

Steinhilber, Matthias ;

Bardow, Andre .

APPLIED THERMAL ENGINEERING, 2016, 102 :513-519

[8]

McGillis W. R., 1991, 1991 Proceedings, Seventh Annual IEEE Semiconductor Thermal Measurement and Management Symposium (Cat. No.91CH2972-8), P64, DOI 10.1109/STHERM.1991.152914

[9]

Schnabel L., 2008, 2 MINSK INT SEM HEAT

[10]

Schnabel L., 2010, TAGUNGSBAND DTSCH KA

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