Abstract: A software supported dynamic interactive electronic menu system for restaurant/bar and coffee shop related businesses which is intended to replace traditional paper menus is hereby invented. This programmable lightweight menu provides customers with graphic view of menu items on the available screen to simplify the process of placing their orders. Complete information about restaurant food items can save time and avoid possible misunderstanding between waiters/waitresses and customers. It can also assist customers with information about other products within and/or out of the business in question depending on the circumstances.

Abstract: A vapor compression apparatus and a method for operating a vapor compression system are provided. A working fluid is conveyed through a vapor compression system having a fluid line. A charging element is connected to the fluid line to direct an electric charge into working fluid. The electric charge is operable to disrupt intermolecular forces and weaken intermolecular attraction to enhance expansion of the working fluid to the vapor phase, increasing the capacity, performance and efficiency of the system components, and reducing system cycling mechanical wear and energy consumption.

Abstract: A vapor compression apparatus and a method for operating a vapor compression system are provided. A working fluid is conveyed through a vapor compression system having a fluid line. A charging element is connected to the fluid line to direct an electric charge into working fluid. The electric charge is operable to disrupt intermolecular forces and weaken intermolecular attraction to enhance expansion of the working fluid to the vapor phase, increasing the capacity, performance and efficiency of the system components, and reducing system cycling mechanical wear and energy consumption.

Abstract: An air-to-air heat pump has a first passageway having an inlet and an outlet both communicating with air outside the building, and having a first heat exchanger constituting an evaporator for a first refrigerant contained therein during a heating cycle, and has a second passageway having an inlet and an outlet both communicating with relatively warm air inside the building, and having a second heat exchanger constituting a condenser for the first refrigerant contained therein during the heating cycle and having the usual active heat pump circuit including the first and second heat exchangers. The invention provides a heat pipe containing a second refrigerant and having a first normally higher end in the first passageway and a second, normally lower end in the second passageway, the second refrigerant being capable of being evaporated by said relatively warm air in the second passageway and being capable of being condensed by cold air in the said first passageway.