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EHS-72 Electric Heating System

EHS-72 Electric Heating System
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HEATPAC® EHS-72 Electric Heating System Designed for installation in marine oil systems, Alfa Laval HEATPAC® EHS-72 is an automatic electric heating system (EHS) that heats all the types of mineral oils in booster and centrifugal separation systems in ship engine rooms. C ompact and lightweight, it features specially designed heating lements that provide high-efficiency heat transfer and e gentle treatment. It also eatures instant-response electronic f t emperature control with an accuracy of ±1°C. This safeguards oil quality, thereby reventing quality degradation. p Application HEATPAC EHS-72 automatically heats all the types of mineral oils, particularly high-density, high-viscosity fuel oils, sensitive lubricating oils and turbine oils, commonly used in booster systems, prior to centrifugal separation. Benefits • Compact and lightweight • Easy to install • Gentle treatment • No deterioration of heated oil • Automatic start-and-forget operation Standard configuration • HEATPAC EHM Heater, standard design The heater comprises rectangular die-cast aluminium h eating elements mounted on a flange to form a compact heating block, which is inserted in a pressure vessel made of mild steel. A baffle inside the vessel divides the flow into two passes. The oil inlet and outlet are located pposite o each other on the same level, enabling installation in a series. The terminal box housing at the top of the heater is s eparated from the hot pressure vessel to maintain a low temperature in the box. The hot side of the pressure vessel is adequately insulated with 25-mm mineral wool wrap

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• HEATPAC power unit Housed in a robust cabinet feeds electric power to the heater. It is regulated by an external controller, such as the Alfa Laval EPC 60, which is connected to and controls the Alfa Laval separation ystems. s • Ancillary equipment including PT-100 temperature sensor, high temperature sensor and safety valve. Working principle The fuel or lubricating oil is fed continuously to the H EATPAC heater. A signal from the PT-100 temperature sensor at the oil outlet is transmitted to the Alfa Laval EPC 60 controller, which regulates the amount of e lectric power to the heating...

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Standard safety equipment comprises a high temperature sensor located in close proximity to the aluminium heating element. The high temperature sensor cooperates with an independent temperature guard in the control unit/power unit to ensure protection from overheating. In addition, the heater automatically turns off if the pump starter is turned off. This feature ensures that the heater is fully protected from overheating in the event of a systems operations failure. The Alfa Laval EPC 60 control unit and power unit are specially designed thyristor modules, which perform the i ncremental...

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Alfa Laval reserves the right to change specifications without prior notification. How to contact Alfa Laval Up-to-date Alfa Laval contact details for all countries are always available on our website at www.alfalaval.com Alfa Laval is a trademark registered and owned by Alfa Laval Corporate AB. HEATPAC is a trademark owned by Alfa Laval Corporate AB. MDD00221EN 1506

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