Heat pumps

  • Technology

    The technology is an energy efficient water purification method that can be used for large-scale commercial application. The process works by boiling the contaminated water to destroy the presence of bacterial or parasitic organisms and then instantaneously cooling it. It uses CO2 as the heating agent as well as the refrigerant. In a heat exchanger compressed CO2 is used to boil water to 116 ˇ C destroying any harmful bacteria. The water is then cooled in a radiator by using a fan. The liquid CO2 is throttled to reduce its pressure and subsequently cooled to around 5ˇ C.

  • Objective

    The invention concerns devices for water storage heating and delivery. A storage water heater of the invention provides an amount of unmixed recently heated water from an internal small volume during a draw along with water from a main volume. When water is drawn from the storage water heater an amount of recently heated water substantially unmixed with the remaining volume of the tank is drawn along with heated water from the remaining volume.

  • Technology

    Professor Pilon and colleagues have developed a new energy cycle that converts thermal and/or mechanical energies directly into electrical energy. With the ability to harvest waste heat the cycle could be used to increase the efficiency of systems like internal combustion engines heat pumps and refrigeration systems. Mechanical energy harvesting could be used to salvage energy from roads and various transportation systems.

  • Technology

    Many nations are facing challenges of rapidly expanding energy needs. However large amount of energy consumption is lost as a by-product of power refrigeration or heat pump cycles as required by the second law of thermodynamics. Most of the lost energy appears as low grade waste heat which is hard to reuse or recover because of its low temperature. Pyroelectric energy converters are a novel direct-energy conversion technology that transforms waste heat directly into electricity.

  • Technology

    Background: The key to portable applications of cooling is the development of a compact heat actuated heat pump that does not require electric power or shaft work. This eliminates the need for a portable power source needed by a vapor-compression cycle. power sources (either batteries or power generators) tend to be heavy relative to the simple combustion equipment using in a heat actuated system. Previous research has shown with the inclusion of thermoelectric generators the heat-actuated heat pumps can be completely independent of power sources.

  • This patented system integrates an electroosmotic (EO) pump into a fuel cell membrane electrode assembly (MEA) for low-energy management of liquid reactants and air. Conventional fuel cell air pumps consume a large fraction (~0.5) of the total energy produced by a fuel cell. The EO pumps have no moving parts so they can actively control MEA hydration and oxidizer diffusion with less work (

  • Problems: 1. Solar panel conversion efficiency decreases with increasing temperature 2. The amount of energy required to desalinate water increases as temperature of the feed water decreases Technology: This invention uses photovoltaic panels (PV) to power reverse-osmosis water filtration. A thermal controller maximizes the clean water produced by a PV/RO system by managing the temperatures of the PV panel and the RO feed water in response to changes in the incoming solar radiation ambient air temperature and source water temperature.

  • Technology Description: Pultrusion is a continuous manufacturing technique for the production of fibre reinforced composite materials of predefined dimensions. However there are some problems with the method that limit its use. These can be overcome by using new technology developed at the University. This new method ensures that fibres are spread within the bundle in the optimal way to maximise resin impregnation and ensure voids are not produced in the section.