Heat Recovery Articles

  • Historic Lahaina Inn and Lahaina Grill Both Go Solar - Case Study

    Lahaina Grill and Lahaina Inn have substantial energy needs from hot water to air conditioning to electrical. They contacted Haleakala Solar to come up with innovative solutions that would maximize the amount of energy saved and created for the money invested. The design engineers of Haleakala Solar hunkered down and came up a unique plan which incorporated several different techniques and ...


    By Haleakala Solar Inc

  • High efficiency and competitive edge thanks to free-of-charge waste heat - Case Study

    Location: Wöbbelin (Germany) Capacity: 2 x 526 kWel Input materials: Manure, renewable resources Features: All the waste heat of the biogas plants is used for heating the farm’s greenhouses and buildings. The biogas plant in Wöbbelin In 2005 the first 500 kWel biogas plant was ...


    By EnviTec Biogas AG

  • Valve Efficiency Upgrades at SSE Great Island CCGT Power Station

    SSE plc's Great Island Power Station in County Wexford is a 464 MW combined cycle gas turbine (CCGT) plant which was first commisioned in 2014. Acknowledged as one of Ireland's cleanest and most efficient natural gas power stations on the country's national grid, the plant generates enough energy to power the equivalent of half-a-million homes. In 2016 the operators identified improvements that ...


    By Rotork plc

  • Valve efficiency upgrades at SSE Great Island CCGT Power Station - Case Study

    Sector: Power Generation Category: Control Networks, Electric Actuators, Services Products: Field Service, IQ3 Range, Preventative Maintenance, Training Overview SSE plc’s Great Island Power Station in County Wexford is a 464 MW combined cycle gas turbine (CCGT) plant which was first ...


    By Rotork plc

  • RTO upgrade sees significant benefits - Case Study

    A project this year to upgrade an existing RTO has been successfully completed in four areas: Increasing thermal efficiency by adding additional layers of ceramic honeycomb media into the RTO this has the benefits of energy reduction from lower gas consumption both during production & on standby. De-commissioning an old inefficient recuperative oxidiser which was attached to a single ...


    By AirProtekt Limited

  • Case study - Mission Linen Supply, Santa Barbara, California, USA

    “A number of years ago Sid Abma of Sidel Systems USA Inc. approached us with his Sidel SRU flue gas heat recovery unit. I think that we, like most companies, considered it; but we took no action for some time. Finally a situation developed that made it beneficial for us to try this unit. We purchased a unit and had it installed in July of 2006. A second unit is in the process of being ...


    By Sidel Systems USA Inc.

  • Case study - Waste heat generates steam and savings

    OVERVIEW A coil coating facility purchased a new a 15,000 SCFM Regenerative Thermal Oxidizer (RTO) which had a nominal heat transfer efficiency rate of 90% thermal energy recovery. It was designed with supplemental fuel injection (SFI) which is used during low VOC loading conditions, to help save fuel cost.  The facility was looking for additional ways to decrease their exhaust ...

  • Case study - Increasing primary heat recovery

    OVERVIEW Tekra Corporation is a custom coater of plastic films in Wisconsin, where state regulations require over 98% of the Volatile Organic Compounds (VOCs) emitted from their process be destroyed in an oxidizer system. While considering their first oxidizer system, Tekra's Engineers did their homework and invested in an early model Regenerative Thermal Oxidizer (RTO). While at the ...

  • Case-study - Utilising waste heat for water production and climate control

    Water purification is needed to produce high quality water for consumption, agriculture and industrial needs. Conventional water treatment processes, like distillation and reverse osmosis, consume vast amounts of energy. However, there is a large potential for significant reductions in energy consumption and CO2 emissions in this sector. It can be achieved by the exploitation of waste heat for ...


    By Climate-KIC

  • Utilizing Waste Heat For Power

    Continuous duty gen-sets provide base-load power generation in diverse applications around the globe. However, high fuel costs and engine maintenance are pain points felt by operators. A low-maintenance path to significant fuel savings and lower emissions is what the U.S. Department of Defense (DOD) had in mind when they approached ElectraTherm to integrate the company’s Green Machine waste ...


    By ElectraTherm

  • Case study - Green Machine generates power from waste heat at biogas facility in the Czech Republic

    Biogas/Heat-to-Power Application on Two MWM Internal Combustion Engines Site: Brno, Czech Rep. Engine Max Power: 980kWe (currently limited to 900 kWe) Green Machine Gross Power Output Avg:  32-39 kWe Thermal Input to the Green Machine: 375-500kWt Hot Water Input Range: 86 - 92°C Hot Water Flow: 35 m3/hour Ambient Temperature: 0-25°C Date Commissioned: Q2 ...


    By ElectraTherm

  • ElectraTherm Green Machine generates power from biomass in Italy - Case Study

    Site: Badia Prataglia, Italy Gross Power Output Avg: 46kWe Hot Water Input Range: 110°C Hot Water Flow: 10 l/s Thermal Input to the Green Machine (kW thermal): 500kWt ElectraTherm commissioned a Green Machine to generate emission-free electricity from biomass in Badia Prataglia, Italy. The facility operates a biomass boiler burning a mix of sawdust and ground up waste wood from ...


    By ElectraTherm

  • Flooring manufacturer reduces operating costs with a customized heat recovery system - Case Study

    Rising energy costs effect your bottom line. You don’t have to be a CFO to understand that energy costs are high and show little sign of relief these days. To combat the rising cost of natural gas, many companies that operate air pollution control systems are beginning to look at methods that economically recover heat for use somewhere else in their manufacturing operations. One leading ...

  • Modelling the viability of heat recovery from combined sewers

    Modelling of wastewater temperatures along a sewer pipe using energy balance equations and assuming steady-state conditions was achieved. Modelling error was calculated, by comparing the predicted temperature drop to measured ones in three combined sewers, and was found to have an overall root mean squared error of 0.37 K. Downstream measured wastewater temperature was plotted against modelled ...


    By IWA Publishing

  • Exergy analysis of a syngas fuelled cogeneration cycle for combined production of power and refrigeration

    This communication presents a biomass fuelled cogeneration cycle for the combined production of power and refrigeration. The system is an integration of combined gas–steam cycle and absorption refrigeration cycle. A thermodynamic analysis through energy and exergy is employed, to investigate the effects of cycle pressure ratio, gas turbine inlet temperature and evaporator temperature on first–law ...


    By Inderscience Publishers

  • Client - Oil Refinery, Eastern Europe

    Project - Heavy Oil Pre-Heater As part of an overall facility upgrade this major oil refinery decided to seek ways of reducing its heavy oil pre-heating costs. A proposal was submitted that would enable waste heat from the refinery to be used as the source to safely pre-heat the stored heavy oil. The solution proposed the use of a gas to water recovery unit coupled to two heat pipe ...


    By Econotherm UK Limited

  • Exergy or the entropic drive: waste heat and free heat

    The dissipation of exergy is conventionally held to be the inference of the entropy growth. In this conventional perspective, the universe is running down towards equilibrium or heat death. Recent cosmological findings of 1998–2000 give empirical evidence that the universe is instead moving away from equilibrium while its entropy increases. We can better comprehend this non–equilibrium world by ...


    By Inderscience Publishers

  • Thermodynamic analysis of efficient recovery and utilisation of waste heat resources during sintering process

    Efficient recycling and utilisation of waste heat resources are among the primary methods in saving energy during sintering process, as waste heat resource recycling and utilisation are essentially energy conversion process. The purpose of this study is to analyse energy conversion and utilisation during the sintering process, and waste heat resources in each subsystem during the sintering ...


    By Inderscience Publishers

  • Get 46% FREE Energy with Waste Heat Recovery

    Kaojai Green can show you how a simple waste heat recovery system can produce up to 46% of usable heat energy and energy performance benefit! Read on to see how… First let’s get a little technical and look at how we “can” do this… In waste heat recovery systems the “Art of Energy Recovery” or ...


    By Kaojai Green Energy

  • Green machine generates power from waste heat at biogas facility in the Czech Republic

    Biogas/Heat-to-Power Application on Two MWM Internal Combustion Engines Site: Brno, Czech Rep. Engine Max Power: 980kWe (currently limited to 900 kWe) Green Machine Gross Power Output Avg:  32-39 kWe Thermal Input to the Green Machine: 375-500kWt Hot Water Input Range: 86 - 92°C Hot Water Flow: 35 m3/hour Ambient Temperature: 0-25°C ElectraTherm’s ...


    By ElectraTherm

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