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Water-oil exchangers
Water-oil exchangers
EMMEGI water-oil heat exchangers are designed for cooling hydraulic systems, typically installed on return lines. They are known for high efficiency and reliability due to high-quality materials and precision manufacturing. The exchangers feature inspectable water circuits with options for 1, 2, or 4 passages and can include thermostatic valves to reduce water consumption.
Compatible Fluids
The exchangers are compatible with various fluids, including Mineral Oils (HL, HLP), Water/Oil Emulsions, Water/Glycol, Industrial Water, and other fluids upon consultation with EMMEGI.
Technical Specifications
Available in versions for Fresh Water, Sea Water, and AISI, these exchangers operate at a pressure of 12 bar, with a test pressure of 18 bar and a maximum operating temperature of 120°C.
Installation
Optimal heat exchange is achieved by circulating fluids in opposite directions. The heat exchanger should be mounted with flexible supports and connected using flexible tubing. A by-pass valve is recommended in environments with significant temperature fluctuations, and continuous water circulation is advised at low temperatures to prevent damage.
Maintenance
Water Side Cleaning: Regular inspection and cleaning of the water circuit are recommended to remove lime and impurities. This involves removing the headers and flushing the tubes.
Oil Side Cleaning: Clean by circulating perchloride in the opposite direction for about 30 minutes, followed by flushing with hot water.
Heat Exchanger Selection Example
Selection requires data such as oil flow, specific weight, specific heat, viscosity, oil and water temperatures, and cooling power. These parameters help select the appropriate model from the catalogue.
Performance and Correction Factors
Performance diagrams and correction factors for pressure drop and temperature variations assist in selecting the correct model based on specific operational conditions.
Product Models
The document details specifications and performance diagrams for models like MG 54, MGC 60e80, and MGE 60 series, with options for one or two-way water circuits. Each model's dimensions, materials, and technical characteristics are outlined, though not binding.
Overview
The document provides technical specifications and performance data for series such as MG81, MG130, MG131, MG155, MG157, MGB80, and MGB130, designed with controllable water circuits for standard and sea water applications.
Specifications
Dimensions, capacities, and materials used in construction are listed, including CuZn40, CuZn37, CuNi10Mn1Fe, and AISI 304 for components like shells, covers, baffles, and tubes. Zinc anodes are included for sea water versions.
Performance Data
Tables and diagrams show heat dissipation (HP and KW), oil flow rates, and pressure drops at various flow rates and conditions. Correction factors for pressure drop are provided for different CST values.
Design Features
The exchangers feature one-two-four ways controllable water circuits, allowing operational flexibility. The document specifies the inclusion of drain plugs and various inlet and outlet configurations.
Recommendations
Dimensions and technical characteristics are not binding, suggesting users verify specifications for their specific applications.
Catalog excerpts
Scambiatori Acqua-Olio Water-Oil heat-exchangers
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. PRESSIONE DI ESERCIZIO : 12 bar. . PRESSIONE DI COLLAUDO : 18 bar. . TEMPERATURA MAX DI ESERCIZIO : 120°C Installazione In fig. 1 e indicata la corretta posizione d' entrata dei due fluidi, che devono circolare in controcorrente per ottenere il massimo scambio termico. Il posizionamento dello scambiatore sulla macchina deve essere fatta utilizzando appositi supporti elastici, e quindi collegata all' impianto idraulico ed alla rete idrica mediante tubi flessibili. E' consigliabile prevedere, su impianti che lavorano in ambienti con forti escursioni termiche, una valvola di by-pass (fig.2) tra...
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Entrata Olio Oil inlet Uscita Olio Oil outlet Pulizia lato acqua Water side cleaning Uscita Acqua Water outlet Entrata Acqua Water inlet Manutenzione Pulizia lato acqua Water side cleaning Per garantire il massimo rendimento dello scambiatore, è consigliabile una periodica ispezione del circuito acqua al fine d’eliminare eventuali tracce di calcare o altre impurità che si sono depositate all‘ interno dei tubi. Quest’ operazione si compie agevolmente togliendo solo il fondello e procedendo allo scovolamento dei tubi. To guarantee the maximum effectiveness in exchange, an ispection of the water...
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Esempio di scelta dello scambiatore di calore DATI : Portata olio Peso specifico Calore specifico Viscosita Temperatura IN olio Temperatura IN acqua Potenza da dissipare Data relating selection DATA : Oil flow Specific weight Specific heat Viscosity Oil temperature Water temperature Cooling power to heat exchanger 60 [lt/min.] 0,88 [Kg/dm3] 0,49 [Kcal/Kg °C] 32 [cst] 55 [°C] Conoscendo la portata dell' olio, la potenza da dissipare, e stabilito il AT, ovvero la differenza tra la temperatura ingresso olio e la temperatura ingresso acqua, si pud ricercare sui diagrammi riportati a catalogo lo scambiatore...
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Se per la scelta, tutti i dati non sono conosciuti, If in doubt any of this data, contact EMMEGI. 4 CATALOGO PRODOTTI PRODUCTS CATALOGU
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Uscita olio Entrata olioUscita acqua Water outlet Oil in|et Oi| out|et Anodo di zinco *xc* TIPO TYPE FATTORE DI CORREZIONE (F)-PERDITE DI CARICO CORRECTION FACTOR (F)-PRESSURE DROP DIAGRAMMA RENDIMENTO Alla portata massima e minima indicata in tabella PERFORMANCE DIAGRAM At the maximum and minimum flow stated in schedule PERDITE DI CARICO (32 cst) PRESSURE DROP (32 cst)
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TIPO TYPE
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Uscita acqua Water outlet Entrata olio Uscita olio Entrata acqua Water inlet *xc* Le dimensioni e le caratteristiche tecniche non sono impegnative. Over-all dimension and technical characteristics are not binding. DIAGRAMMA RENDIMENTO Alla portata massima e minima indicata in tabella PERFORMANCE DIAGRAM At the maximum and minimum flow stated in schedule CATALOGO PRODOTTI PRODUCTS CATALOGUE 7
Open the catalog to page 9
Scambiatori acqua-olio serie MGE 60 Water-oil heat exchangers series MGE 60 Con circuito acqua a due passaggi. Two ways water circuit Entrata olio Oil inlet a Uscita acqua Water outlet Uscita olio Oil outlet Entrata acqua Water inlet Le dimensioni e le caratteristiche tecniche non sono impegnative. Over-all dimension and technical characteristics are not binding. PIASTRA TUBIERA TUBES SHEET PORTATA OLIO HP DISPERSI CAPACITA' CON OLIO HP DISSIPATED CONTENTS WITH OIL (lt) =55°C H2O=20°C Dimensioni - Over all dimension Kg DIAGRAMMA RENDIMENTO Alla portata massima e minima indicata in tabella PERFORMANCE...
Open the catalog to page 10
Con circuito acqua ispezionabile a uno-due-quattro passaggi. One-two-four ways controllable water circuit TIPO TYPE DIAGRAMMA RENDIMENTO Alla portata massima e minima indicata in tabella PERFORMANCE DIAGRAM At the maximum and minimum flow stated in schedule FATTORE DICORREZIONE (F)-PERDITE DICARICO CORRECTION FACTOR (F)-PRESSURE DROP 10 PERDITE DI CARICO (32 cst) PRESSURE DROP (32 cst) 30 60 90 120 lt/1' CATALOGO PRODOTTI PRODUCTS CATALOGUE 9
Open the catalog to page 11
Con circuito acqua ispezionabile a uno-due-quattro passaggi. One-two-four ways controllable water circuit ■ Uscita acqua Water outlet Entrata acqua Water inlet Entrata olio Oil inlet Uscita olio Oil outlet * Nella versione marina e compreso l'anodo di zinco. Zinc anode included for sea water version. Le dimensioni e le caratteristiche tecniche non sono impegnative. Over-all dimension and technical characteristics are not binding. DIAGRAMMA RENDIMENTO Alla portata massima e minima indicata in tabella PERFORMANCE DIAGRAM At the maximum and minimum flow stated in schedule FATTORE DI CORREZIONE (F)-PERDITE...
Open the catalog to page 12
Water-oil heat exchangers series MG130 Con circuito acqua ispezionabile a uno-due-quattro passaggi. One-two-four ways controllable water circuit TIPO TYPE DIAGRAMMA RENDIMENTO Alla portata massima e minima indicata in tabella PERFORMANCE DIAGRAM At the maximum and minimum flow stated in schedule FATTORE Dl CORREZIONE (F)-PERDITE Dl CAR1CO CORRECTION FACTOR (F)-PRESSURE DROP PERDITE DICARICO (32 cst) PRESSURE DROP (32 cst) CATALOGO PRODOTTI PRODUCTS CATALOGUE
Open the catalog to page 13
Con circuito acqua ispezionabile a uno-due-quattro passaggi. One-two-four ways controllable water circuit TIPO TYPE DIAGRAMMA RENDIMENTO Alla portata massima e minima indicata in tabella PERFORMANCE DIAGRAM At the maximum and minimum flow stated in schedule FATTORE Dl CORREZIONE (F)-PERDITE Dl CAR1CO CORRECTION FACTOR (F)-PRESSURE DROP 10 PERDITE DICARICO (32 cst) PRESSURE DROP (32 cst) 100 12 CATALOGO PRODOTTI PRODUCTS CATALOGUE
Open the catalog to page 14
Scambiatori acqua-olio serie MG155 Water-oil heat exchangers series MG155 Con circuito acqua ispezionabile a quattro passaggi. Four ways controllable water circuit Entrata olio Uscita olio *xc* Le dimensioni e le caratteristiche non sono impegnative. Over-all dimension and technical characteristics are not binding. DIAGRAMMA RENDIMENTO Alla portata massima e minima indicata in tabella PERFORMANCE DIAGRAM At the maximum and minimum flow stated in schedule FATTORE Dl CORREZIONE (F)-PERDITE Dl CAR1CO CORRECTION FACTOR (F)-PRESSURE DROP PERDITE DICARICO (32 cst) PRESSURE DROP (32 cst)
Open the catalog to page 15
Scambiatori acqua-olio serie MG157 Water-oil heat exchangers series MG157 Con circuito acqua ispezionabile a quattro passaggi. Four ways controllable water circuit Entrata olio Oil inlet Uscita olio oil outlet Scarico olio Drain plug Entrata acqua Water inlet Scarico acqua * Drain plug * Uscita acqua Water outlet * Nella versione marina é compreso l'anodo di zinco zinc anode included for sea water version Le dimensioni e le caratteristiche non sono impegnative. Over-all dimension and technical characteristics are not binding. TIPO TYPE TUBI TUBES PIASTRA TUBIERA TUBES SHEET DEFLETTORI BAFFLES...
Open the catalog to page 16All Emmegi Heat Exchangers catalogs and technical brochures
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