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.
Tiger lily plants produce exotic blooms. Tiger lilies are known by their scientific name Lilium lancifolium or Lilium tigrinum. These 3- to 4-foot-tall flowers produce hairy stems covered with green, lance-shaped leaves and midsummer blooms with petals that curl backwards. The flowers are bright orange with black spots. Mature tiger lily bulbs can develop at least ten 2-inch-wide flowers each summer.