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Heat Pumps for Heating and Cooling geothermal operation. Simply increasing blower speed will not solve the problem, since the extra blower energy use will lower the system's efficiency and generate excessive noise. The only way to get the correct amount of air flow, with acceptable energy use, is to have large enough air ducting. The air ducting system should also be quiet. The blower noise, or any noise that the geothermal heat pump makes, must not travel through the air ducting system. Using vibration dampers on the supply and return air ducts or plenums, and lining these areas for 5 feet in each direction with an approved sound deadening material, will usually prevent this. Also, room air registers should be sized large enough to let the air flow quietly through them. You shouldn't be able to hear your geothermal heat pump running; you should only know it is operating by the very gentle movements of your curtains. Finally, the air ducting must provide the correct air flow to each room. Air flow is affected by the air pressure in the ducting, which is determined by the length and size of the duct, and the speed of the blower motor. Also, every room should have a return air register, or else air flow will be interrupted when the room's door is shut. For the best control of room air flow, an automatic duct damper system should be used. Automatic duct dampers open or close air ducts as a room's air flow requirements change, according to the room's thermostat. They allow each room to be kept at a few degrees warmer or a few degrees cooler than the main system setting, if the occupant desires it. They also automatically adjust for the effects of the sun shining on one side of the building, or different amounts of air infiltration from the wind, so that each room stays at the desired temperature. Air ducts that are installed in unconditioned spaces will need to be insulated to the most recent building codes for their locale. Most new insulation codes require that air ducting in unconditioned spaces be insulated to at least R-11, and be air tight. If air ducting is installed in attic spaces, those spaces must be ventilated so the air temperature will not rise higher than a few degrees above outside temperature. If you are going to install the geothermal heat pump unit itself in any of these unconditioned spaces, you must make sure it is rated for it. 5.9. Geo-thermal Heat Pumps – Delivery Configurations Geothermal space heating systems generally use water based hydronic heat pumps. Hydronic heat pumps, when combined with modern distribution and control systems, can serve in a wide variety of applications. 77PDF Image | Heat Pumps for Heating and Cooling
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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
Heat Pumps CO2 ORC Heat Pump System Platform More Info
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