Heat transfer always occurs from a region of high temperature to another region of lower temperature. Heat transfer changes the internal energy of both systems involved according to the First Law of Thermodynamics.
Cyperus esculentus (also called chufa sedge, nut grass, yellow nutsedge, tiger nut sedge, or earth almond) is a crop of the sedge family widespread across much of the world.It is native to most of the Western Hemisphere as well as southern Europe, Africa, Madagascar, the Middle East and the Indian Subcontinent.n Spain, C. esculentus is cultivated for its edible tubers, called earth almonds or tiger nuts, for the preparation of  horchata de chufa, a sweet, milk-like beverage. However, in most other countries, C. esculentus is considered a weed.
Macadamia nut trees can be grown on deep, well-drained soils with a pH of 5.0-6.5 or on well-drained a'a lava land that is sufficiently weathered to support natural vegetation. The trees require 60-120 inches of rainfall a year and can be grown from sea level to an elevation of 2500 feet.awaii is the world's leader in growing and processing macadamia nuts. In 1989-90, Hawaii harvested a record 50.5 million lb of buts (net, wet in-shell basis) for a record farm value of $44.9 million, up from 18.2 million lb and $5.8 million in 1975-76.