By American Society of Heating Refrigerating and Air-Conditioning Engineers
This instruction manual covers the refrigeration gear and structures for functions except human convenience. This ebook comprises info on cooling, freezing, and storing nutrition; business functions of refrigeration; and low-temperature refrigeration. basically a reference for the practising engineer, this quantity can also be precious for someone concerned with cooling and garage of nutrients items. This variation contains new chapters: Carbon Dioxide Refrigeration platforms and Terminology of Refrigeration. additionally new for this quantity are bankruptcy order and groupings which have been revised for extra logical stream and use.
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Extra info for 2010 ASHRAE Handbook - Refrigeration (I-P Edition)
5 Btu/lb. 14 oz to 80 ft3. Liquid CO2 is dispensed and stored in large pressurized vessels that are often fitted with an independent refrigeration system to control storage vessel pressure. Manufacturing facilities use it in both liquid and gas phase, depending on the process or application. , to replenish large storage tanks) can be transported by pressurized railway containers and specialized road transport tanker trucks. CO2 is considered a very-low-cost refrigerant at just a fraction of the price of other common refrigerants in use today.
Carbon dioxide is unique as a refrigerant because it is being considered for applications spanning the HVAC&R market, ranging from freezers to heat pumps, and from domestic units up to large-scale industrial plants. CO2 has been proposed for use as the primary refrigerant in mobile air conditioners, domestic appliances, supermarket display cases, and vending machines. CO2 heat pump water heaters are already commercially available in a many countries. , rejection of heat above the critical point) is beneficial because it allows good temperature glide matching between the water and supercritical CO2, which benefits the coefficient of performance (COP).
Suction from the coil should not be trapped. This arrangement also ensures lubricant return to the recirculator. • Where the LTRS is above the evaporator, install a liquid return system below the evaporator (Figure 47). This arrangement eliminates static penalty, which is particularly advantageous for plate, individual quick freeze, and spiral freezers. • Use double risers from the evaporator to the LTRS (Figure 48). If a single riser is sized for minimum pressure drop at full load, the static pressure penalty is excessive at part load, and lubricant return Fig.