Abstract: Methods employing the use of vapor compression heat exchange systems are disclosed that allow for optimal mass flow of refrigerant there through. The systems employed in the present invention do not use conventional refrigerant metering devices, such as capillary tubs and expansion valves, which restrict mass flow, but rather incorporate an openly fixed orifice in-line with the conduits connecting the condenser to the evaporator, thereby maintaining the preferential differential between the high pressure condenser side and low pressure evaporator side of the system during operation. Provision of the fixed orifice allows for optimal refrigerant mass flow as measured by cooler compressor temperatures, cooler compressor discharge temperatures, increased heat of rejection, increased heat of absorption, and improved heating and cooling efficiency.

Abstract: Vapor compression heat exchange systems are disclosed that are designed to allow for optimal mass flow of refrigerant there through. The systems of the present invention do not employ conventional refrigerant metering devices, such as capillary tubs and expansion valves, which restrict mass flow, but rather incorporate an openly fixed orifice in-line with the conduits connecting the condenser to the evaporator, thereby maintaining the preferential differential between the high pressure condenser side and low pressure evaporator side of the system during operation. Provision of the fixed orifice allows for optimal refrigerant mass flow as measured by cooler compressor temperatures, cooler compressor discharge temperatures, increased heat of rejection, increased heat of absorption, and improved heating and cooling efficiency. The present invention may employ any conventional refrigerant, including the newer HFC refrigerants, such as R-410A.

Abstract: Vapor compression heat exchange systems are disclosed that are designed to allow for optimal mass flow of refrigerant there through. The systems of the present invention do not employ conventional refrigerant metering devices, such as capillary tubes and expansion valves, which restrict mass flow, but rather incorporate an openly fixed orifice in-line with the conduits connecting the condenser to the evaporator, thereby maintaining the pressure differential between the high pressure condenser side and low pressure evaporator side of the system during operation. Provision of the fixed orifice allows for optimal refrigerant mass flow as measured by cooler compressor temperatures, cooler compressor discharge temperatures, increased heat of rejection, increased heat of absorption, and improved heating and cooling efficiency. The present invention may employ any conventional refrigerant, including the newer HFC refrigerants, such as R-410A.

Abstract: An improved reverse-cycle heat pump system is disclosed that comprises components to improve the efficiency of the system in the cooling mode. Specifically, the invention incorporates a conduit assembly for carrying refrigerant from one heat exchanger to the other heat exchanger, wherein the heat exchangers are configured to function interchangeably as a condenser and evaporator, depending upon whether the system is operating in cooling mode or heating mode. The conduit assembly includes a coiled section of tubing disposed near the heat exchanger that functions as an evaporator in cooling mode. This coiled section functions as a reservoir for collecting excess refrigerant liquid from the “evaporator” during operation of the system in the cooling mode. Consequently, in cooling mode, heat dissipation via the condenser is thereby increased since less refrigerant liquid is contained therein, resulting in improved cooling of the conditioned area or substance (i.e.