Yokohama Rubber Co. Ltd. (TYO:5101) recently announced that it has developed a double-tube internal heat exchanger (IHX) that offers improved cooling efficiency for automotive air conditioning systems. The product has already been adopted in the new Jeep Wrangler and Jeep Compass. While conventional IHX systems use two separate refrigerant tubes, Yokohama Rubber’s new offering partially integrates these. This allows the...