PDF Publication Title:
Text from PDF Page: 045
Exhaust air Supply air CONDENSER EVAPORATOR 2 – Technological Status AIR-TO-AIR HEAT EXCHANGER SUCTION GAS HEAT EXCHANGER EXPANSION VALVE COMPRESSOR RECEIVER Figure 2.8 Principle of the residential monovalent air-heating system. GROUND HEAT EXCHANGER The ambient air is preheated in the ground heat exchanger before it enters the CO2 evaporator and the exhaust air heat exchanger. The preheated air is then heated to the desired supply temperature in the CO2 condenser. Depending on the specific transmission loss of the house, the air exchange rate and the outdoor temperature, the required supply temperature for the air will typically range from 25 to 50oC. Owing to the low temperature of the inlet air, heat will be given off at a subcritical pressure. The combination of a relatively low inlet air temperature in the condenser and a considerable temperature glide during heat rejection, results in an energy efficient heat pump cycle. When operating at a constant subcritical pressure of 7 MPa, the calculated SPF for the air heating system was approximately 6.2 in an Austrian climate. By utilizing optimum high-side pressure control the SPF increased about 5%. Due to the high energy efficiency, the air heating system represents an interesting alternative to ground-coupled heat pumps in combination with low-temperature floor heating systems. However, the air heating system has several disadvantages: 23PDF Image | Residential CO2 Heat Pump System for Combined
PDF Search Title:
Residential CO2 Heat Pump System for CombinedOriginal File Name Searched:
20559406.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 |