Energetic analysis of a commercial absorption refrigeration unit using an ammonia-water mixture

被引：8

作者：

Pereira de Araujo, Josegil Jorge ^{[1
,2
,3
]}

Cabral dos Santos, Carlos Antonio ^{[2
,6
]}

Monteiro de Holanda, Carlos Almir ^{[4
]}

Furlan Duarte, Joao Batista ^{[4
]}

Ochoa Villa, Alvaro Antonio ^{[5
,6
]}

Charamba Dutra, Jose Carlos ^{[6
]}

机构：

[1] Univ Fed Sergipe, Sao Cristovao, Sergipe, Brazil

[2] Univ Fed Paraiba, Joao Pessoa, Paraiba, Brazil

[3] Univ Fortaleza, Fortaleza, Ceara, Brazil

[4] Univ Fed Ceara, Fortaleza, Ceara, Brazil

[5] Inst Fed Tecnol Pernambuco, Ave Prof Luiz Freire 500, BR-50740540 Recife, PE, Brazil

[6] Univ Fed Pernambuco, Ave Prof Moraes Rego 1235, BR-50670901 Recife, PE, Brazil

来源：

ACTA SCIENTIARUM-TECHNOLOGY | 2017年 / 39卷 / 04期

关键词：

air conditioning; absorption system; simulation; experimental results; COP; DYNAMIC SIMULATION-MODEL; PERFORMANCE ANALYSIS; CHILLER PERFORMANCE; SYSTEM; PUMP;

D O I：

10.4025/actascitechnol.v39i4.29904

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The ROBUR (R) absorption refrigeration system (ARS), model ACF60, with a capacity of 17.5 kW, is tested, modeled and simulated in the steady state. To simulate the thermal load a heating system with secondary coolant was used, in which a programmable logic controller (PLC) kept the inlet temperature EVA at around 285.15 K. The mathematical model used was based on balancing the mass, energy and ammonia concentrations and completed by closing equations such as, Newton's cooling equation. The mathematical model was implemented using the Engineering Equation Solver - EES (R). The results obtained after modeling and a numerical permanent simulation are studied using the Duhring diagram. Potential points of internal heat recovery are visualized, and by using graphs of the binary mixture, it is possible to identify the thermodynamic states of all monitored points. The data obtained in the numerical simulation of the ARS was compared with data acquired in the actual tests of the ARS with the ROBUR (R) apparatus.

引用

页码：439 / 448

页数：10

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