A temperature change requires as gain or loss of heat energy.
For what?It requires a heat gain for the water,but a heat loss for whatever the water is in contact with.
These are exact opposities - heat gain is an increase in energy that results in an increased temperature of the material. Heat loss is a loss in energy that results in a decreased temperature of the material.
Heat
heat loss
A change of state involves a gain or loss of heat energy.
Heat gain, otherwise, a heat loss would be like turning off the heat beneath a saucepan on the stove.
NO Heat Loss , No Heat gain
The sweat is evaporating. Evaporation requires energy - heat. That energy is removed from the surface of your skin, and you feel the loss of energy as cold.
The U.S. Department of Energy has several suggestions of energy-efficient window treatments. Awnings on south- and west-facing windows help prevent heat gain during the summer. Window blinds can prevent heat gain in summer, but are less effective at preventing winter heat loss. Draperies can prevent heat gain in summer and heat loss in winter, but their effectiveness depends on a variety of factors, including size (extending high above the window and onto the floor is best) and whether they are sealed at the edges. High-reflectivity films block heat gain, which is good in summer, but can be energy inefficient in winter. Storm panels can be added onto windows during the winter to prevent heat loss and then removed during the summer.
Heat energy does not form into anything. The "loss of energy" is actually the energy converted into heat.
Almost all energy conversions involve a loss of energy.
heat gain is when an object get hotter. heat loss is when an object gets colder.