Comprising of highly qualified professionals, our Engineering department offers both Pre-Sales and Post-Sales support to our customers. Our experienced engineers with detailed product knowledge ensure a seamless and effective transfer from project designing to the installation phase.

Project Engineering

    OES engineering teams incorporate electrical/electronics & mechanical engineers along with a dedicated team of computer aided design (CAD) staff. The engineering teams support gas/diesel generation/HVAC/RO/Solar/Air compression projects. It means we are providing a one window solution provider to your valued customer as far as industrial utilities is concerned. For this we have a un-match capability in the market.

    Their involvement can vary from pre-sales and post sales advice through to helping engineer a full turn-key generation project. OES’s engineers are highly trained and work closely with their principals (GE-Jenbacher/Cummins/Midea/DB/Shuangliang/Euroclima/GD-compressor/GE-Water etc.) in order to best integrate their products into a larger project.

    The team has comprehensive knowledge of a wide range of industrial utilities applications that can be drawn on to support your installation. The team provides input to your project from the sales stage and goes on to support the detailed engineering of your installation at the project phase. OES’s engineering team can advise on appropriate standards of installation and supports the delivery of a first class project as per our principal standard/requirement.

Computer Aided Design

    OES’s CAD team provides accurate scale drawings, diagrams and process & instrumentation diagrams (P&IDs) to support the sales, engineering and project management teams. Design work is typically conducted in three dimensions and utilises a number of tools including Autocad Plant, Autocad P&ID and Cadworks.

Mechanical Engineering

    OES’s experienced mechanical application/project engineers help to support the engineering of the mechanical elements of your plant.

Electrical/Electronic Engineering

    OES employs a number of application and project electrical/electronic engineers who specialize in the electrical/electronic field to support your project. The team is an integral component of the OES’s engineering capabilities and is experienced in local/international electrical standards and requirements.

Project Management

    OES provides added value to the customer by offering a comprehensive project management service for the installation of your project. At point of order OES assigns a dedicated project engineer to your installation supervision job. The project engineer acts as your primary point of contact following the sales phase and will coordinate the engineering, installation and commissioning of your equipments (like, gas/diesel generation/HVAC/Solar/RO/Air compression) asset.

    OES’s project/application engineers have hands on experience and a comprehensive knowledge of our principal’s products.

    For all EPC projects OES’s project management team (including project/construction manager with team of QA/QC and HSE) follows a structured approach to the delivery of all projects. The primary focus is to deliver you a high quality project on time and to budget whilst aiming to meet and exceed your expectations.

    To control all EPC projects we have trained engineer on primavera software which enables us to control and monitor the project effectively by developing a S-Curve through software.


  • Single point of contact from conclusion of sale through to commissioning.
  • Dedicated project manager assigned to your project for turn-key/EPC installation.
  • Supports provision of a turn-key/EPC installation.

Health, Safety & Environment

    OES is dedicated to ensuring the safety of our employees and subcontractors. We are not compromising any things related to HSE. OES ensures that its employees/subcontractors are protected to the highest levels with personal protective equipment (PPE) to minimize any risks associated with our employees/subcontractors work.

    To date, we have completed more than xxxxxxx millions safe hours (this is just for last three years data, as we have started EPC/Turn key projects from last three years).

Heat Recovery Options

    Co-Generation, Combined Heat and Power

    Co-generation is the simultaneous generation of electricity and steam / hot water or heat in a single power plant. From an energy resource point of view, co-generation is beneficial and it saves primary energy when compared with separate generation of electricity and steam / hot water or heat. From Co-generation we will get following benefits;

  • It will increase efficiency of energy conversion and use.
  • Environment will subject to lower emission, in particular of CO2 & NOx.
  • Meet SSGC/SNGC requirement of high efficient power plant.
  • Large cost saving will be achieved;it will provide additional competitiveness for industrial & commercial users, and offer an affordable heat for industrial users.
  • Just for example the gas generator set of GE-Jenbacher JGS320 converts approx about 40-41 % of their input fuel energy into electrical power. Another 15-20% energy which is rejected to the jacket water and 20-25% to exhaust will be totally utilized and 2-3% energy will be rejected to the environment.

    The Engine jacket water heat (including engine jacket cooling water, lubricating oil cooling and Ist stage inter-ccoler) is recoverable in the form of hot water, typically on a 70/90˚C flow return basis and can be interfaced with the site at a plate heat exchanger. It can be used in M/s. Shuangliang Hot water fired absorption chiller (68/88˚C) or produce ample hot water at a temperature range 65 deg. C to 88 deg. C(as per requirment).

    The engine exhaust gases typically leave the engine at between 400 and 500˚C. This can be used directly for drying, in a waste heat boiler to generate steam, or via an exhaust gas heat exchanger combining with the heat from the cooling circuits through JMS module.

    This flue gases can also be used to run M/s. Shuangliang Flue fired absorption chiller to get high efficiency or COP of chiller due high quality heat.

    Alternatively new technologies are available for the conversion of heat to further electricity, such as the GE-Organic Rankine Cycle Engine.

    Tri-generation, Combined Heat, Power and Cooling (CHPC)

    Tri-generation or Tri-gen is the simultaneous generation of following from a single heat source.

  • Electricity
  • Heat( steam / hot water)
  • Cooling
  • From an energy resource point of view, Tri-generation is beneficial and it saves primary energy when compared with separate generation of electricity and steam/Hot water/Chilled water.

    There are a number of benefits to tri-generation including:

  • High efficiency production of electricity and heat.
  • Reduced fuel and energy costs.
  • Engine heat can be used to produce steam or hot water as per site requirement specially in textile industries.
  • No harmful chemical pollutants since water is used as the refrigerant in absorption chillers.
  • Absorption chillers provide an economical and environmental alternative to conventional refrigeration. Combining efficiency, low emission power generation equipment with absorption chillers allows for maximum total fuel efficiency, elimination of harmful refrigerants and reduced overall air emissions. There are a number of different configurations of CHP units where refrigeration can be derived. These include:

    M/s. Shuangliang Absorption Chillers ( through Heat Recovery)

  • Using hot water from engine (68/88 deg. C)
  • Using steam from EHRB (exhaust heat recovery boiler)
  • Using flue gases from engine to run flue fired absorption chiller
  • Excellence

    All over Pakistan, we have supplied a large number of absorption chillers based on gas engine waste heat. This is our core expertise to execute Co-generation as well as Tri-Generation project in Pakistan. Absorption chiller technology represents an optimal solution for a year-round efficient source of cooling and heat, especially when used in conjunction with a gas engine cogeneration plant. More than 30 systems with GE Jenbacher gas engines in combination with absorption chillers have been delivered in all our Pakistan.