What are the methods of subcooling realization?

(1) Installation of subcooler after condenser; (2) Increase the area of condenser; and
(3) set up the return heaters, the use of return heat cycle
1) condenser after the installation of subcooler in the larger refrigeration system, in order to make the refrigerant liquid temperature into the throttle valve to reduce some of the flash gas produced in the throttling or throttling, and appropriately improve the refrigeration efficiency, process design in the reservoir after the addition of equipment specifically designed to be used for subcooling – subcooler.
2) set up the return heaters, the use of return heat cycle also some small fluorine refrigeration system, such as small cold storage, although 1 no specialized subcooler, but the liquid supply pipe and the return air pipe wrapped together insulation, the use of the return air pipe to reduce the temperature of the liquid temperature of the liquid supply pipe, but also a section of the liquid supply pipe and the expansion valve can be installed directly in the reservoir through the recooling by re-cooling to achieve subcooling purposes, thereby improving refrigeration efficiency. At the same time also heats up the temperature of the return air tube, to avoid the compressor to inhale the excess moisture vapor and may produce liquid strike.
Capillary throttling of the system, capillary tube and return air tube (suction tube) combined together to go, there are co-welded together, there are hot glue sleeve together, there are from the return air tube through the return air tube, there are also wrapped around the return air tube, but also some will be the capillary tube or liquid supply tube directly in the box body through.
Capillary tube and the return air pipe for heat exchange, so that the liquid refrigerant before throttling and the return air pipe in the low-temperature refrigerant vapors for heat exchange cooling and get subcooling, so that both can reduce the return air pipeline may be entrained in the liquid liquid hit the compressor, while at the same time to achieve throttling before the liquid refrigerant subcooling purpose.
3) appropriately increase the condenser area of the condenser to deliberately increase the condenser, leaving space to get re-cooling and subcooling is also feasible. But in the specification of the design is not going to do so, the consideration is to minimize the overall size and weight, reduce manufacturing costs.