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Table of Contents 2.4.2.2 Application of a DHW Storage Tank....................14 2.4.2.3 Examples of System Designs................................15 2.4.3 Technological Status of Residential CO2 Heat Pumps ........19 2.4.3.1 CO2 Heat Pump Water Heaters .............................19 2.4.3.2 CO2 Heat Pumps for Retrofitting in High- Temperature Heat Distribution Systems ...............21 2.4.3.3 CO2 Heat Pumps in Combination with Low- Temperature Heat Distribution Systems ...............22 2.4.3.4 A Monovalent Air-Heating System Using an Air-to-Air CO2 Heat Pump Unit ...........................22 3. Theoretical Background and System Analysis ....................25 3.1 Introduction ..................................................................................... 25 3.2 The CO2 Heat Pump Unit................................................................26 3.2.1 Theoretical Reference Cycles ..............................................26 3.2.1.1 The Modified Lorentz Cycle.................................26 3.2.1.2 The Ideal Lorentzen Cycle....................................28 3.2.2 The Transcritical CO2 Heat Pump Cycle.............................29 3.2.2.1 The Coefficient of Performance (COP) ................30 3.2.2.2 The Volumetric Heating Capacity ........................33 3.2.3 Gas Cooler Configurations .................................................. 34 3.2.4 Application of a Tripartite Gas Cooler ................................38 xiv 3.2.4.1 3.2.4.2 3.2.4.3 3.2.4.4 3.2.5 Exergy 3.2.5.1 3.2.5.2 Principle System Design .......................................38 Operational Characteristics ................................... 39 Design of the Tripartite Gas Cooler ......................43 Testing of a Prototype Heat Pump – Modelling....45 Analysis ................................................................... 45 Theoretical Framework.........................................45 Exergy Analysis of the Prototype CO2 Heat Pump ..48 3.3 The Hot Water 3.3.1 Overall Design Criteria........................................................49 3.3.2 Operating Modes .................................................................51 System ....................................................................49PDF Image | Residential CO2 Heat Pump System for Combined
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CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
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