PDF Publication Title:
Text from PDF Page: 049
Heat Pumps for Heating and Cooling CHAPTER – 4 4. WATER SOURCE HEAT PUMPS (WSHP) Water source heat pumps use water as the heat source when the system is operating in the heating mode. As with air source heat pumps, an important thing to consider is the fluid that is ultimately being treated. For example, we can use heat in the water to heat air, or water. When we use heat in water to heat air, we call that heat pump a water-to-air heat pump. When we use the heat in water to heat water, we call that heat pump the water-to-water heat pump. Water Source heat pumps (WSHP) harvest their low grade energy from the ground water, rivers, lakes or ponds. As with ground source heat pumps, the main advantage of water source heat pumps is that the temperature of groundwater or surface water (in certain depth) stays stable throughout the year. The excellent thermal properties of water enable WSHPs to operate at higher efficiencies than both GSHPs and ASHPs throughout the year. In cooling mode, the WSHP could remove heat from the air and transfer it to the water. Due to the fact that the water is maintained at a temperature of 62oF (in summers), versus an outdoor air temperature of 95oF, it takes less work to transfer the heat to the water than it does to the air. Therefore, the water cooled air conditioning cycle is more efficient than the air cooled cycle. The same thing happens in winters when the heat pump will be removing heat from 62oF water compared to winter outdoor air subfreezing temperatures. The heat pump heating capacity will remain high without any auxiliary heating system. Defrost systems are not needed. The figure below shows the approximate ground water temperatures in the USA. The undisturbed ground temperature will remain constant throughout the year below 30 ft. Above 30 ft. the ground temperature will change with the season. 48PDF Image | Heat Pumps for Heating and Cooling
PDF Search Title:
Heat Pumps for Heating and CoolingOriginal File Name Searched:
heat-pumps-for-cooling-r1.pdfDIY PDF Search: Google It | Yahoo | Bing
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
| CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com | RSS | AMP |