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A small appliance developed at ORNL dehumidifies air and then recycles heat to warm water in a water heater. The device circulates cool, dry air in summer and warm air in winter. In addition, the invention can cut the energy required to run a conventional water heater by an estimated 50 per cent. Conventional electric water heater designs have reached the limit of efficiency. The ORNL technology…

: Fact Sheets
: Heating, Heat, Energy...

AtticSim Tool for Enhanced Building Design UT-B ID 50000043 AtticSim is a Fortran 95-based computer tool for predicting the thermal performance of residential attics. It mathematically describes the conduction through the gables, eaves, roof deck, and ceiling; the convection at the exterior and interior surfaces; the radiosity heat exchange between surfaces within the attic enclosure; the heat tr…

: Fact Sheets
: Design, Heat, Heat Exchange...

Recharging Energy Storage Devices and/or Supplying Electric Power UT-B ID 201202931 The ability to conveniently recharge electric and hybrid electric vehicles (EVs and HEVs) is a key factor in their acceptance. This invention comprises methods for charging energy storage devices such as the batteries in EVs and HEVs from an external power source and/or for enabling EVs/HEVs to supply electrical p…

Roof Savings Calculator Fact Sheet Roof Savings Calculator (RSC) is a user-friendly tool for reporting whole-building energy and cost savings as a result of using a cool roof. Developed over several years through a collaboration between Oak Ridge National Laboratory and Lawrence Berkeley National Laboratory, RSC replaces cool roof toolkits (i.e., company-specific estimates for roofs and previous…

: Fact Sheets
: Cost, Energy, Cooling...

Wireless Charging System for Electric Vehicles ORNL researchers have made wireless power transfer more efficient by using an air core transformer loosely coupled to a storage battery. By reconfiguring the transformer and altering the resonance frequency, power is transferred to the battery with little energy loss and fewer demands on the primary circuit. The technology can be used for wireless ch…

Ionic Liquids as New Solvents for Improved Separation of Medical Isotopes The daughters of thorium-229 (actinium-225 and bismuth-213) and other alpha- emitting radioisotopes are rapidly becoming of great interest for short-range and site-specific therapy of cancers and micrometastic disease. In many of the current medical isotope generator systems, the production process uses an organic exchange …

: Fact Sheets
: Separation, Solvent, Actinium ...

Electrical Motor/Generator Drive with Improved Inverter In hybrid electric vehicle (HEV) motors, power inverters with bulky, high performance direct current (DC) bus capacitors are needed to absorb ripple currents and protect the battery. Researchers at ORNL invented an electrical motor drive apparatus with an improved inverter that reduces the size and cost of high performance capacitors and eli…

: Fact Sheets
: Capacitor , Battery, Switches...

Ventilation and Solar Heat Storage System Offers Big Energy Savings Researchers at ORNL developed the Dynamic Attic Heat Exhaust System, an attic ventilation system designed to minimize heat loads in summer and heat loss in winter. The technology can provide an estimated 30 to 70 per cent reduction in energy consumption, compared with current technology. Over a 10 year period, the technology coul…

: Fact Sheets
: Assembly, Heat, Heating...

Method for Removing Precipitates in Biofuel At ORNL the application of ultrasonic energy, or sonication, has been shown to successfully remove or prevent the formation of 50 90% of the precipitates in biofuels. Precipitates can plug filters as biodiesel is transported from one location to another, and often cannot be detected by visual inspection. This simple method solves one of the most seri…

Self-Learning Controller for Plug-in Hybrid Vehicles Learns Recharge Stations for Optimal Battery Charge Researchers at ORNL invented a robust self-learning controller for plug-in hybrid electric vehicles (PHEVs). This device improves PHEV performance and fuel efficiency by maintaining as high a state of battery charge as possible, given the location of area charging stations. The invention is es…

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