The energy efficiency of heating and cooling appliances and equipment has ... These new heat exchangers have copper tubing designed with an even smaller diameter (5-mm copper tube) than competing heat ...

the new design provides a cost-effective alternative to the conventional means of increasing equipment capacity and improving energy efficiency in various other sectors where shell and tube heat ...

A piece of small-bore copper tube is passed through a cork into the bottle, then wrapped round a piece of pipe which forms an exhaust The resulting heat exchanger is insulated, the engine started ...