Abstract: A drinking cup, preferably of the disposable type, for hot or cold beverages having conduit means extending through or along a side wall thereof between open upper and lower ends positioned at the cup lip and lower interior, respectively. A lid is provided for sealing engagement with the cup lip and includes an opening which may be positioned either in or out of registration with the upper end of the conduit means, in accordance with the selective rotational orientation of the lid upon the lip. Preferably, a plurality of separate conduit means are provided in side-by-side relation, the size of the lid opening permitting selective registration with the upper ends of any desired number of the conduit means.

Abstract: Body heat given off by cows in an enclosed barn during periods of outside temperature requiring residential heating is utilized as the heat source in a first refrigeration circuit, and heat absorbed from the milk is used as the source for a second refrigeration circuit. Water used in the residential heating system absorbs heat from the refrigerants of both circuits in a double tube condenser. One circuit may also be used as a pre-heater for domestic hot water.