How does the EVC reduce steam generation costs?

The EVC recovers heat from flash steam that would otherwise be lost to atmosphere. This preheats make-up or process water, reducing the thermal load on the boiler and lowering fuel consumption.

Where is the EVC typically installed in a steam system?

The EVC is installed on the vent line of a non-pressurised condensate receiver. Flash steam flows through the EVC where it condenses while transferring heat to counter-flowing cold water.

Does the EVC require frequent maintenance?

The EVC is built with high-quality components and has no moving parts, resulting in low maintenance requirements and long service life.

Can the EVC be retrofitted to existing condensate systems?

Yes, the compact design allows the EVC to be retrofitted to existing condensate receivers with minimal modification to the steam system.

SPIRAX SARCO · HEAT EXCHANGERS

Spirax Sarco Exhaust Vapour Condenser (EVC) – Flash Steam Heat Recovery System

Name: Spirax Sarco Exhaust Vapour Condenser (EVC) – Flash Steam Heat Recovery System
Brand: Spirax Sarco

Spirax Sarco EVC Exhaust Vapour Condenser for flash steam recovery and make-up water preheating. Energy-efficient heat exchanger for industrial steam

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Overview

The Spirax Sarco Exhaust Vapour Condenser (EVC) is a high-efficiency heat exchanger designed to recover waste heat from flash steam that would otherwise be vented to the atmosphere. It preheats make-up water or process water by condensing flash steam from non-pressurised condensate receivers, directly reducing steam generation costs and carbon emissions.

In typical steam and condensate systems, condensate receivers vent flash steam to prevent pressurisation. This venting represents significant energy loss. The EVC captures this energy and transfers it to incoming cold water using a compact, straight corrugated tube design that promotes turbulent flow for maximum heat transfer efficiency.

By recovering flash steam energy, the EVC reduces boiler load, lowers fuel consumption, minimises water make-up requirements, and decreases chemical treatment costs. Many installations achieve payback within one year.

Key Features

Recovers waste heat from flash steam vented from condensate receivers
Straight corrugated tube design promotes turbulent flow for high heat transfer efficiency
Compact construction suitable for retrofit and new installations
Reduces CO2 emissions and carbon footprint
Lowers boiler blowdown frequency by reducing make-up water demand
High-quality components for reliable operation and low maintenance
Counter-current flow arrangement for optimal thermal performance

Applications

The Spirax Sarco EVC is suitable for any industrial facility with steam systems that vent flash steam from condensate receivers. Typical applications include:

- Preheating boiler feed water or make-up water - Process water heating in manufacturing plants - Energy recovery in food and beverage, pharmaceutical, textile, and chemical industries - Steam system efficiency upgrades in refineries and power plants - Sustainability initiatives targeting reduced fuel consumption and emissions

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Contact PC Engineering for pricing, availability, and technical support for the Spirax Sarco Exhaust Vapour Condenser (EVC). Call us or fill in our inquiry form — our engineers will respond within 24 hours.

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