Thesis (D. Phil.) - New University of Ulster, 1981.
|The Physical Object|
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The coefficient of performance or COP (sometimes CP or CoP) of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling provided to work required. Higher COPs equate to lower operating costs. The COP usually exceeds 1, especially in heat pumps, because, instead of just converting work to heat (which, if % efficient, would be a COP of 1), it pumps. A heat pump is a device that transfers heat energy from a source of heat to what is called a thermal pumps move thermal energy in the opposite direction of spontaneous heat transfer, by absorbing heat from a cold space and releasing it to a warmer one.A heat pump uses external power to accomplish the work of transferring energy from the heat source to the heat sink. 2. The vapour passes into the compressor and by compression increases its temperature and pressure 3. Hot vapour is condensed in the 2nd heat exchanger, the heat being passed via water onto Heating or Domestic Hot Water system 4. The liquid refrigerant passes back through the expansion valve, reducing its pressure ready to start the cycle again. heat pumps – technology and environmental impact july part 1 order to improve the information to the consumers. The proposal will be sent to the European.
A ‘coefficient of performance’ (COP) measures the efficiency of a heat pump. At a COP of 3, a heat pump gives 3 units of heat energy for each unit of electricity used. However, this basic COP excludes top-up heating (e.g. an immersion heater) or electricity for pumps and fans. 2. The vapour passes into the compressor and compression increases the temperature. 3. The warm vapour is condensed is the heat exchanger and the rejected heat is passed onto the heating and hot water system 4. The condensed vapour returns to liquid, passes back through expansion valve, reducing pressure and temperature, ready to start cycle again. The Benefits of Ecodan. Heating homes with Ecodan air to water heat pumps is now a viable and credible alternative to traditional methods and can help to combat rising energy bills through greater efficiency.. By using an Ecodan to provide space heating and hot water, it is possible to reduce a home’s CO 2 emissions and running costs.. Ecodan uses inverter-driven heat pump technology to. Third Semester Syllabus For Admission Batch e 2 AERONAUTICAL ENGINEERING FLUID MECHANICS AND HEAT FLOW() UNIT I. Fluid properties And Fluid Statics: Units & Dimensions. Properties of fluids – Specific gravity, specific weight,viscosity, compressibility, vapour pressure and gas laws – capillarity and surface tension.